diff -Nru device-tree-compiler-1.4.5/checks.c device-tree-compiler-1.4.7/checks.c
--- device-tree-compiler-1.4.5/checks.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/checks.c	2018-07-23 03:00:50.000000000 +0000
@@ -53,26 +53,28 @@
 	struct check **prereq;
 };
 
-#define CHECK_ENTRY(_nm, _fn, _d, _w, _e, ...)	       \
-	static struct check *_nm##_prereqs[] = { __VA_ARGS__ }; \
-	static struct check _nm = { \
-		.name = #_nm, \
-		.fn = (_fn), \
-		.data = (_d), \
-		.warn = (_w), \
-		.error = (_e), \
+#define CHECK_ENTRY(nm_, fn_, d_, w_, e_, ...)	       \
+	static struct check *nm_##_prereqs[] = { __VA_ARGS__ }; \
+	static struct check nm_ = { \
+		.name = #nm_, \
+		.fn = (fn_), \
+		.data = (d_), \
+		.warn = (w_), \
+		.error = (e_), \
 		.status = UNCHECKED, \
-		.num_prereqs = ARRAY_SIZE(_nm##_prereqs), \
-		.prereq = _nm##_prereqs, \
+		.num_prereqs = ARRAY_SIZE(nm_##_prereqs), \
+		.prereq = nm_##_prereqs, \
 	};
-#define WARNING(_nm, _fn, _d, ...) \
-	CHECK_ENTRY(_nm, _fn, _d, true, false, __VA_ARGS__)
-#define ERROR(_nm, _fn, _d, ...) \
-	CHECK_ENTRY(_nm, _fn, _d, false, true, __VA_ARGS__)
-#define CHECK(_nm, _fn, _d, ...) \
-	CHECK_ENTRY(_nm, _fn, _d, false, false, __VA_ARGS__)
-
-static inline void  PRINTF(3, 4) check_msg(struct check *c, struct dt_info *dti,
+#define WARNING(nm_, fn_, d_, ...) \
+	CHECK_ENTRY(nm_, fn_, d_, true, false, __VA_ARGS__)
+#define ERROR(nm_, fn_, d_, ...) \
+	CHECK_ENTRY(nm_, fn_, d_, false, true, __VA_ARGS__)
+#define CHECK(nm_, fn_, d_, ...) \
+	CHECK_ENTRY(nm_, fn_, d_, false, false, __VA_ARGS__)
+
+static inline void  PRINTF(5, 6) check_msg(struct check *c, struct dt_info *dti,
+					   struct node *node,
+					   struct property *prop,
 					   const char *fmt, ...)
 {
 	va_list ap;
@@ -83,19 +85,33 @@
 		fprintf(stderr, "%s: %s (%s): ",
 			strcmp(dti->outname, "-") ? dti->outname : "<stdout>",
 			(c->error) ? "ERROR" : "Warning", c->name);
+		if (node) {
+			fprintf(stderr, "%s", node->fullpath);
+			if (prop)
+				fprintf(stderr, ":%s", prop->name);
+			fputs(": ", stderr);
+		}
 		vfprintf(stderr, fmt, ap);
 		fprintf(stderr, "\n");
 	}
 	va_end(ap);
 }
 
-#define FAIL(c, dti, ...)						\
+#define FAIL(c, dti, node, ...)						\
+	do {								\
+		TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__);	\
+		(c)->status = FAILED;					\
+		check_msg((c), dti, node, NULL, __VA_ARGS__);		\
+	} while (0)
+
+#define FAIL_PROP(c, dti, node, prop, ...)				\
 	do {								\
 		TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__);	\
 		(c)->status = FAILED;					\
-		check_msg((c), dti, __VA_ARGS__);			\
+		check_msg((c), dti, node, prop, __VA_ARGS__);		\
 	} while (0)
 
+
 static void check_nodes_props(struct check *c, struct dt_info *dti, struct node *node)
 {
 	struct node *child;
@@ -126,7 +142,7 @@
 		error = error || run_check(prq, dti);
 		if (prq->status != PASSED) {
 			c->status = PREREQ;
-			check_msg(c, dti, "Failed prerequisite '%s'",
+			check_msg(c, dti, NULL, NULL, "Failed prerequisite '%s'",
 				  c->prereq[i]->name);
 		}
 	}
@@ -156,7 +172,7 @@
 static inline void check_always_fail(struct check *c, struct dt_info *dti,
 				     struct node *node)
 {
-	FAIL(c, dti, "always_fail check");
+	FAIL(c, dti, node, "always_fail check");
 }
 CHECK(always_fail, check_always_fail, NULL);
 
@@ -171,14 +187,42 @@
 		return; /* Not present, assumed ok */
 
 	if (!data_is_one_string(prop->val))
-		FAIL(c, dti, "\"%s\" property in %s is not a string",
-		     propname, node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "property is not a string");
 }
 #define WARNING_IF_NOT_STRING(nm, propname) \
 	WARNING(nm, check_is_string, (propname))
 #define ERROR_IF_NOT_STRING(nm, propname) \
 	ERROR(nm, check_is_string, (propname))
 
+static void check_is_string_list(struct check *c, struct dt_info *dti,
+				 struct node *node)
+{
+	int rem, l;
+	struct property *prop;
+	char *propname = c->data;
+	char *str;
+
+	prop = get_property(node, propname);
+	if (!prop)
+		return; /* Not present, assumed ok */
+
+	str = prop->val.val;
+	rem = prop->val.len;
+	while (rem > 0) {
+		l = strnlen(str, rem);
+		if (l == rem) {
+			FAIL_PROP(c, dti, node, prop, "property is not a string list");
+			break;
+		}
+		rem -= l + 1;
+		str += l + 1;
+	}
+}
+#define WARNING_IF_NOT_STRING_LIST(nm, propname) \
+	WARNING(nm, check_is_string_list, (propname))
+#define ERROR_IF_NOT_STRING_LIST(nm, propname) \
+	ERROR(nm, check_is_string_list, (propname))
+
 static void check_is_cell(struct check *c, struct dt_info *dti,
 			  struct node *node)
 {
@@ -190,8 +234,7 @@
 		return; /* Not present, assumed ok */
 
 	if (prop->val.len != sizeof(cell_t))
-		FAIL(c, dti, "\"%s\" property in %s is not a single cell",
-		     propname, node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "property is not a single cell");
 }
 #define WARNING_IF_NOT_CELL(nm, propname) \
 	WARNING(nm, check_is_cell, (propname))
@@ -212,8 +255,7 @@
 		     child2;
 		     child2 = child2->next_sibling)
 			if (streq(child->name, child2->name))
-				FAIL(c, dti, "Duplicate node name %s",
-				     child->fullpath);
+				FAIL(c, dti, child2, "Duplicate node name");
 }
 ERROR(duplicate_node_names, check_duplicate_node_names, NULL);
 
@@ -227,8 +269,7 @@
 			if (prop2->deleted)
 				continue;
 			if (streq(prop->name, prop2->name))
-				FAIL(c, dti, "Duplicate property name %s in %s",
-				     prop->name, node->fullpath);
+				FAIL_PROP(c, dti, node, prop, "Duplicate property name");
 		}
 	}
 }
@@ -246,8 +287,8 @@
 	int n = strspn(node->name, c->data);
 
 	if (n < strlen(node->name))
-		FAIL(c, dti, "Bad character '%c' in node %s",
-		     node->name[n], node->fullpath);
+		FAIL(c, dti, node, "Bad character '%c' in node name",
+		     node->name[n]);
 }
 ERROR(node_name_chars, check_node_name_chars, PROPNODECHARS "@");
 
@@ -257,8 +298,8 @@
 	int n = strspn(node->name, c->data);
 
 	if (n < node->basenamelen)
-		FAIL(c, dti, "Character '%c' not recommended in node %s",
-		     node->name[n], node->fullpath);
+		FAIL(c, dti, node, "Character '%c' not recommended in node name",
+		     node->name[n]);
 }
 CHECK(node_name_chars_strict, check_node_name_chars_strict, PROPNODECHARSSTRICT);
 
@@ -266,8 +307,7 @@
 				   struct node *node)
 {
 	if (strchr(get_unitname(node), '@'))
-		FAIL(c, dti, "Node %s has multiple '@' characters in name",
-		     node->fullpath);
+		FAIL(c, dti, node, "multiple '@' characters in node name");
 }
 ERROR(node_name_format, check_node_name_format, NULL, &node_name_chars);
 
@@ -277,6 +317,11 @@
 	const char *unitname = get_unitname(node);
 	struct property *prop = get_property(node, "reg");
 
+	if (get_subnode(node, "__overlay__")) {
+		/* HACK: Overlay fragments are a special case */
+		return;
+	}
+
 	if (!prop) {
 		prop = get_property(node, "ranges");
 		if (prop && !prop->val.len)
@@ -285,12 +330,10 @@
 
 	if (prop) {
 		if (!unitname[0])
-			FAIL(c, dti, "Node %s has a reg or ranges property, but no unit name",
-			    node->fullpath);
+			FAIL(c, dti, node, "node has a reg or ranges property, but no unit name");
 	} else {
 		if (unitname[0])
-			FAIL(c, dti, "Node %s has a unit name, but no reg property",
-			    node->fullpath);
+			FAIL(c, dti, node, "node has a unit name, but no reg property");
 	}
 }
 WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);
@@ -304,8 +347,8 @@
 		int n = strspn(prop->name, c->data);
 
 		if (n < strlen(prop->name))
-			FAIL(c, dti, "Bad character '%c' in property name \"%s\", node %s",
-			     prop->name[n], prop->name, node->fullpath);
+			FAIL_PROP(c, dti, node, prop, "Bad character '%c' in property name",
+				  prop->name[n]);
 	}
 }
 ERROR(property_name_chars, check_property_name_chars, PROPNODECHARS);
@@ -336,8 +379,8 @@
 			n = strspn(name, c->data);
 		}
 		if (n < strlen(name))
-			FAIL(c, dti, "Character '%c' not recommended in property name \"%s\", node %s",
-			     name[n], prop->name, node->fullpath);
+			FAIL_PROP(c, dti, node, prop, "Character '%c' not recommended in property name",
+				  name[n]);
 	}
 }
 CHECK(property_name_chars_strict, check_property_name_chars_strict, PROPNODECHARSSTRICT);
@@ -370,7 +413,7 @@
 		return;
 
 	if ((othernode != node) || (otherprop != prop) || (othermark != mark))
-		FAIL(c, dti, "Duplicate label '%s' on " DESCLABEL_FMT
+		FAIL(c, dti, node, "Duplicate label '%s' on " DESCLABEL_FMT
 		     " and " DESCLABEL_FMT,
 		     label, DESCLABEL_ARGS(node, prop, mark),
 		     DESCLABEL_ARGS(othernode, otherprop, othermark));
@@ -410,8 +453,8 @@
 		return 0;
 
 	if (prop->val.len != sizeof(cell_t)) {
-		FAIL(c, dti, "%s has bad length (%d) %s property",
-		     node->fullpath, prop->val.len, prop->name);
+		FAIL_PROP(c, dti, node, prop, "bad length (%d) %s property",
+			  prop->val.len, prop->name);
 		return 0;
 	}
 
@@ -422,8 +465,8 @@
 			/* "Set this node's phandle equal to some
 			 * other node's phandle".  That's nonsensical
 			 * by construction. */ {
-			FAIL(c, dti, "%s in %s is a reference to another node",
-			     prop->name, node->fullpath);
+			FAIL(c, dti, node, "%s is a reference to another node",
+			     prop->name);
 		}
 		/* But setting this node's phandle equal to its own
 		 * phandle is allowed - that means allocate a unique
@@ -436,8 +479,8 @@
 	phandle = propval_cell(prop);
 
 	if ((phandle == 0) || (phandle == -1)) {
-		FAIL(c, dti, "%s has bad value (0x%x) in %s property",
-		     node->fullpath, phandle, prop->name);
+		FAIL_PROP(c, dti, node, prop, "bad value (0x%x) in %s property",
+		     phandle, prop->name);
 		return 0;
 	}
 
@@ -463,16 +506,16 @@
 		return;
 
 	if (linux_phandle && phandle && (phandle != linux_phandle))
-		FAIL(c, dti, "%s has mismatching 'phandle' and 'linux,phandle'"
-		     " properties", node->fullpath);
+		FAIL(c, dti, node, "mismatching 'phandle' and 'linux,phandle'"
+		     " properties");
 
 	if (linux_phandle && !phandle)
 		phandle = linux_phandle;
 
 	other = get_node_by_phandle(root, phandle);
 	if (other && (other != node)) {
-		FAIL(c, dti, "%s has duplicated phandle 0x%x (seen before at %s)",
-		     node->fullpath, phandle, other->fullpath);
+		FAIL(c, dti, node, "duplicated phandle 0x%x (seen before at %s)",
+		     phandle, other->fullpath);
 		return;
 	}
 
@@ -496,8 +539,8 @@
 
 	if ((prop->val.len != node->basenamelen+1)
 	    || (memcmp(prop->val.val, node->name, node->basenamelen) != 0)) {
-		FAIL(c, dti, "\"name\" property in %s is incorrect (\"%s\" instead"
-		     " of base node name)", node->fullpath, prop->val.val);
+		FAIL(c, dti, node, "\"name\" property is incorrect (\"%s\" instead"
+		     " of base node name)", prop->val.val);
 	} else {
 		/* The name property is correct, and therefore redundant.
 		 * Delete it */
@@ -531,7 +574,7 @@
 			refnode = get_node_by_ref(dt, m->ref);
 			if (! refnode) {
 				if (!(dti->dtsflags & DTSF_PLUGIN))
-					FAIL(c, dti, "Reference to non-existent node or "
+					FAIL(c, dti, node, "Reference to non-existent node or "
 							"label \"%s\"\n", m->ref);
 				else /* mark the entry as unresolved */
 					*((fdt32_t *)(prop->val.val + m->offset)) =
@@ -541,6 +584,8 @@
 
 			phandle = get_node_phandle(dt, refnode);
 			*((fdt32_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
+
+			reference_node(refnode);
 		}
 	}
 }
@@ -563,7 +608,7 @@
 
 			refnode = get_node_by_ref(dt, m->ref);
 			if (!refnode) {
-				FAIL(c, dti, "Reference to non-existent node or label \"%s\"\n",
+				FAIL(c, dti, node, "Reference to non-existent node or label \"%s\"\n",
 				     m->ref);
 				continue;
 			}
@@ -571,11 +616,21 @@
 			path = refnode->fullpath;
 			prop->val = data_insert_at_marker(prop->val, m, path,
 							  strlen(path) + 1);
+
+			reference_node(refnode);
 		}
 	}
 }
 ERROR(path_references, fixup_path_references, NULL, &duplicate_node_names);
 
+static void fixup_omit_unused_nodes(struct check *c, struct dt_info *dti,
+				    struct node *node)
+{
+	if (node->omit_if_unused && !node->is_referenced)
+		delete_node(node);
+}
+ERROR(omit_unused_nodes, fixup_omit_unused_nodes, NULL, &phandle_references, &path_references);
+
 /*
  * Semantic checks
  */
@@ -586,6 +641,45 @@
 WARNING_IF_NOT_STRING(device_type_is_string, "device_type");
 WARNING_IF_NOT_STRING(model_is_string, "model");
 WARNING_IF_NOT_STRING(status_is_string, "status");
+WARNING_IF_NOT_STRING(label_is_string, "label");
+
+WARNING_IF_NOT_STRING_LIST(compatible_is_string_list, "compatible");
+
+static void check_names_is_string_list(struct check *c, struct dt_info *dti,
+				       struct node *node)
+{
+	struct property *prop;
+
+	for_each_property(node, prop) {
+		const char *s = strrchr(prop->name, '-');
+		if (!s || !streq(s, "-names"))
+			continue;
+
+		c->data = prop->name;
+		check_is_string_list(c, dti, node);
+	}
+}
+WARNING(names_is_string_list, check_names_is_string_list, NULL);
+
+static void check_alias_paths(struct check *c, struct dt_info *dti,
+				    struct node *node)
+{
+	struct property *prop;
+
+	if (!streq(node->name, "aliases"))
+		return;
+
+	for_each_property(node, prop) {
+		if (!prop->val.val || !get_node_by_path(dti->dt, prop->val.val)) {
+			FAIL_PROP(c, dti, node, prop, "aliases property is not a valid node (%s)",
+				  prop->val.val);
+			continue;
+		}
+		if (strspn(prop->name, LOWERCASE DIGITS "-") != strlen(prop->name))
+			FAIL(c, dti, node, "aliases property name must include only lowercase and '-'");
+	}
+}
+WARNING(alias_paths, check_alias_paths, NULL);
 
 static void fixup_addr_size_cells(struct check *c, struct dt_info *dti,
 				  struct node *node)
@@ -622,21 +716,21 @@
 		return; /* No "reg", that's fine */
 
 	if (!node->parent) {
-		FAIL(c, dti, "Root node has a \"reg\" property");
+		FAIL(c, dti, node, "Root node has a \"reg\" property");
 		return;
 	}
 
 	if (prop->val.len == 0)
-		FAIL(c, dti, "\"reg\" property in %s is empty", node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "property is empty");
 
 	addr_cells = node_addr_cells(node->parent);
 	size_cells = node_size_cells(node->parent);
 	entrylen = (addr_cells + size_cells) * sizeof(cell_t);
 
 	if (!entrylen || (prop->val.len % entrylen) != 0)
-		FAIL(c, dti, "\"reg\" property in %s has invalid length (%d bytes) "
-		     "(#address-cells == %d, #size-cells == %d)",
-		     node->fullpath, prop->val.len, addr_cells, size_cells);
+		FAIL_PROP(c, dti, node, prop, "property has invalid length (%d bytes) "
+			  "(#address-cells == %d, #size-cells == %d)",
+			  prop->val.len, addr_cells, size_cells);
 }
 WARNING(reg_format, check_reg_format, NULL, &addr_size_cells);
 
@@ -651,7 +745,7 @@
 		return;
 
 	if (!node->parent) {
-		FAIL(c, dti, "Root node has a \"ranges\" property");
+		FAIL_PROP(c, dti, node, prop, "Root node has a \"ranges\" property");
 		return;
 	}
 
@@ -663,20 +757,20 @@
 
 	if (prop->val.len == 0) {
 		if (p_addr_cells != c_addr_cells)
-			FAIL(c, dti, "%s has empty \"ranges\" property but its "
-			     "#address-cells (%d) differs from %s (%d)",
-			     node->fullpath, c_addr_cells, node->parent->fullpath,
-			     p_addr_cells);
+			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+				  "#address-cells (%d) differs from %s (%d)",
+				  c_addr_cells, node->parent->fullpath,
+				  p_addr_cells);
 		if (p_size_cells != c_size_cells)
-			FAIL(c, dti, "%s has empty \"ranges\" property but its "
-			     "#size-cells (%d) differs from %s (%d)",
-			     node->fullpath, c_size_cells, node->parent->fullpath,
-			     p_size_cells);
+			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+				  "#size-cells (%d) differs from %s (%d)",
+				  c_size_cells, node->parent->fullpath,
+				  p_size_cells);
 	} else if ((prop->val.len % entrylen) != 0) {
-		FAIL(c, dti, "\"ranges\" property in %s has invalid length (%d bytes) "
-		     "(parent #address-cells == %d, child #address-cells == %d, "
-		     "#size-cells == %d)", node->fullpath, prop->val.len,
-		     p_addr_cells, c_addr_cells, c_size_cells);
+		FAIL_PROP(c, dti, node, prop, "\"ranges\" property has invalid length (%d bytes) "
+			  "(parent #address-cells == %d, child #address-cells == %d, "
+			  "#size-cells == %d)", prop->val.len,
+			  p_addr_cells, c_addr_cells, c_size_cells);
 	}
 }
 WARNING(ranges_format, check_ranges_format, NULL, &addr_size_cells);
@@ -696,41 +790,32 @@
 
 	node->bus = &pci_bus;
 
-	if (!strneq(node->name, "pci", node->basenamelen) &&
-	    !strneq(node->name, "pcie", node->basenamelen))
-		FAIL(c, dti, "Node %s node name is not \"pci\" or \"pcie\"",
-			     node->fullpath);
+	if (!strprefixeq(node->name, node->basenamelen, "pci") &&
+	    !strprefixeq(node->name, node->basenamelen, "pcie"))
+		FAIL(c, dti, node, "node name is not \"pci\" or \"pcie\"");
 
 	prop = get_property(node, "ranges");
 	if (!prop)
-		FAIL(c, dti, "Node %s missing ranges for PCI bridge (or not a bridge)",
-			     node->fullpath);
+		FAIL(c, dti, node, "missing ranges for PCI bridge (or not a bridge)");
 
 	if (node_addr_cells(node) != 3)
-		FAIL(c, dti, "Node %s incorrect #address-cells for PCI bridge",
-			     node->fullpath);
+		FAIL(c, dti, node, "incorrect #address-cells for PCI bridge");
 	if (node_size_cells(node) != 2)
-		FAIL(c, dti, "Node %s incorrect #size-cells for PCI bridge",
-			     node->fullpath);
+		FAIL(c, dti, node, "incorrect #size-cells for PCI bridge");
 
 	prop = get_property(node, "bus-range");
-	if (!prop) {
-		FAIL(c, dti, "Node %s missing bus-range for PCI bridge",
-			     node->fullpath);
+	if (!prop)
 		return;
-	}
+
 	if (prop->val.len != (sizeof(cell_t) * 2)) {
-		FAIL(c, dti, "Node %s bus-range must be 2 cells",
-			     node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "value must be 2 cells");
 		return;
 	}
 	cells = (cell_t *)prop->val.val;
 	if (fdt32_to_cpu(cells[0]) > fdt32_to_cpu(cells[1]))
-		FAIL(c, dti, "Node %s bus-range 1st cell must be less than or equal to 2nd cell",
-			     node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "1st cell must be less than or equal to 2nd cell");
 	if (fdt32_to_cpu(cells[1]) > 0xff)
-		FAIL(c, dti, "Node %s bus-range maximum bus number must be less than 256",
-			     node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "maximum bus number must be less than 256");
 }
 WARNING(pci_bridge, check_pci_bridge, NULL,
 	&device_type_is_string, &addr_size_cells);
@@ -760,8 +845,8 @@
 		max_bus = fdt32_to_cpu(cells[0]);
 	}
 	if ((bus_num < min_bus) || (bus_num > max_bus))
-		FAIL(c, dti, "Node %s PCI bus number %d out of range, expected (%d - %d)",
-		     node->fullpath, bus_num, min_bus, max_bus);
+		FAIL_PROP(c, dti, node, prop, "PCI bus number %d out of range, expected (%d - %d)",
+			  bus_num, min_bus, max_bus);
 }
 WARNING(pci_device_bus_num, check_pci_device_bus_num, NULL, &reg_format, &pci_bridge);
 
@@ -778,25 +863,22 @@
 
 	prop = get_property(node, "reg");
 	if (!prop) {
-		FAIL(c, dti, "Node %s missing PCI reg property", node->fullpath);
+		FAIL(c, dti, node, "missing PCI reg property");
 		return;
 	}
 
 	cells = (cell_t *)prop->val.val;
 	if (cells[1] || cells[2])
-		FAIL(c, dti, "Node %s PCI reg config space address cells 2 and 3 must be 0",
-			     node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "PCI reg config space address cells 2 and 3 must be 0");
 
 	reg = fdt32_to_cpu(cells[0]);
 	dev = (reg & 0xf800) >> 11;
 	func = (reg & 0x700) >> 8;
 
 	if (reg & 0xff000000)
-		FAIL(c, dti, "Node %s PCI reg address is not configuration space",
-			     node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "PCI reg address is not configuration space");
 	if (reg & 0x000000ff)
-		FAIL(c, dti, "Node %s PCI reg config space address register number must be 0",
-			     node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "PCI reg config space address register number must be 0");
 
 	if (func == 0) {
 		snprintf(unit_addr, sizeof(unit_addr), "%x", dev);
@@ -808,8 +890,8 @@
 	if (streq(unitname, unit_addr))
 		return;
 
-	FAIL(c, dti, "Node %s PCI unit address format error, expected \"%s\"",
-	     node->fullpath, unit_addr);
+	FAIL(c, dti, node, "PCI unit address format error, expected \"%s\"",
+	     unit_addr);
 }
 WARNING(pci_device_reg, check_pci_device_reg, NULL, &reg_format, &pci_bridge);
 
@@ -828,7 +910,7 @@
 
 	for (str = prop->val.val, end = str + prop->val.len; str < end;
 	     str += strnlen(str, end - str) + 1) {
-		if (strneq(str, compat, end - str))
+		if (strprefixeq(str, end - str, compat))
 			return true;
 	}
 	return false;
@@ -865,7 +947,7 @@
 
 	if (!cells) {
 		if (node->parent->parent && !(node->bus == &simple_bus))
-			FAIL(c, dti, "Node %s missing or empty reg/ranges property", node->fullpath);
+			FAIL(c, dti, node, "missing or empty reg/ranges property");
 		return;
 	}
 
@@ -875,8 +957,8 @@
 
 	snprintf(unit_addr, sizeof(unit_addr), "%"PRIx64, reg);
 	if (!streq(unitname, unit_addr))
-		FAIL(c, dti, "Node %s simple-bus unit address format error, expected \"%s\"",
-		     node->fullpath, unit_addr);
+		FAIL(c, dti, node, "simple-bus unit address format error, expected \"%s\"",
+		     unit_addr);
 }
 WARNING(simple_bus_reg, check_simple_bus_reg, NULL, &reg_format, &simple_bus_bridge);
 
@@ -892,14 +974,12 @@
 		return;
 
 	if (!strncmp(unitname, "0x", 2)) {
-		FAIL(c, dti, "Node %s unit name should not have leading \"0x\"",
-		    node->fullpath);
+		FAIL(c, dti, node, "unit name should not have leading \"0x\"");
 		/* skip over 0x for next test */
 		unitname += 2;
 	}
 	if (unitname[0] == '0' && isxdigit(unitname[1]))
-		FAIL(c, dti, "Node %s unit name should not have leading 0s",
-		    node->fullpath);
+		FAIL(c, dti, node, "unit name should not have leading 0s");
 }
 WARNING(unit_address_format, check_unit_address_format, NULL,
 	&node_name_format, &pci_bridge, &simple_bus_bridge);
@@ -922,16 +1002,68 @@
 		return;
 
 	if (node->parent->addr_cells == -1)
-		FAIL(c, dti, "Relying on default #address-cells value for %s",
-		     node->fullpath);
+		FAIL(c, dti, node, "Relying on default #address-cells value");
 
 	if (node->parent->size_cells == -1)
-		FAIL(c, dti, "Relying on default #size-cells value for %s",
-		     node->fullpath);
+		FAIL(c, dti, node, "Relying on default #size-cells value");
 }
 WARNING(avoid_default_addr_size, check_avoid_default_addr_size, NULL,
 	&addr_size_cells);
 
+static void check_avoid_unnecessary_addr_size(struct check *c, struct dt_info *dti,
+					      struct node *node)
+{
+	struct property *prop;
+	struct node *child;
+	bool has_reg = false;
+
+	if (!node->parent || node->addr_cells < 0 || node->size_cells < 0)
+		return;
+
+	if (get_property(node, "ranges") || !node->children)
+		return;
+
+	for_each_child(node, child) {
+		prop = get_property(child, "reg");
+		if (prop)
+			has_reg = true;
+	}
+
+	if (!has_reg)
+		FAIL(c, dti, node, "unnecessary #address-cells/#size-cells without \"ranges\" or child \"reg\" property");
+}
+WARNING(avoid_unnecessary_addr_size, check_avoid_unnecessary_addr_size, NULL, &avoid_default_addr_size);
+
+static void check_unique_unit_address(struct check *c, struct dt_info *dti,
+					      struct node *node)
+{
+	struct node *childa;
+
+	if (node->addr_cells < 0 || node->size_cells < 0)
+		return;
+
+	if (!node->children)
+		return;
+
+	for_each_child(node, childa) {
+		struct node *childb;
+		const char *addr_a = get_unitname(childa);
+
+		if (!strlen(addr_a))
+			continue;
+
+		for_each_child(node, childb) {
+			const char *addr_b = get_unitname(childb);
+			if (childa == childb)
+				break;
+
+			if (streq(addr_a, addr_b))
+				FAIL(c, dti, childb, "duplicate unit-address (also used in node %s)", childa->fullpath);
+		}
+	}
+}
+WARNING(unique_unit_address, check_unique_unit_address, NULL, &avoid_default_addr_size);
+
 static void check_obsolete_chosen_interrupt_controller(struct check *c,
 						       struct dt_info *dti,
 						       struct node *node)
@@ -950,12 +1082,61 @@
 
 	prop = get_property(chosen, "interrupt-controller");
 	if (prop)
-		FAIL(c, dti, "/chosen has obsolete \"interrupt-controller\" "
-		     "property");
+		FAIL_PROP(c, dti, node, prop,
+			  "/chosen has obsolete \"interrupt-controller\" property");
 }
 WARNING(obsolete_chosen_interrupt_controller,
 	check_obsolete_chosen_interrupt_controller, NULL);
 
+static void check_chosen_node_is_root(struct check *c, struct dt_info *dti,
+				      struct node *node)
+{
+	if (!streq(node->name, "chosen"))
+		return;
+
+	if (node->parent != dti->dt)
+		FAIL(c, dti, node, "chosen node must be at root node");
+}
+WARNING(chosen_node_is_root, check_chosen_node_is_root, NULL);
+
+static void check_chosen_node_bootargs(struct check *c, struct dt_info *dti,
+				       struct node *node)
+{
+	struct property *prop;
+
+	if (!streq(node->name, "chosen"))
+		return;
+
+	prop = get_property(node, "bootargs");
+	if (!prop)
+		return;
+
+	c->data = prop->name;
+	check_is_string(c, dti, node);
+}
+WARNING(chosen_node_bootargs, check_chosen_node_bootargs, NULL);
+
+static void check_chosen_node_stdout_path(struct check *c, struct dt_info *dti,
+					  struct node *node)
+{
+	struct property *prop;
+
+	if (!streq(node->name, "chosen"))
+		return;
+
+	prop = get_property(node, "stdout-path");
+	if (!prop) {
+		prop = get_property(node, "linux,stdout-path");
+		if (!prop)
+			return;
+		FAIL_PROP(c, dti, node, prop, "Use 'stdout-path' instead");
+	}
+
+	c->data = prop->name;
+	check_is_string(c, dti, node);
+}
+WARNING(chosen_node_stdout_path, check_chosen_node_stdout_path, NULL);
+
 struct provider {
 	const char *prop_name;
 	const char *cell_name;
@@ -972,8 +1153,9 @@
 	int cell, cellsize = 0;
 
 	if (prop->val.len % sizeof(cell_t)) {
-		FAIL(c, dti, "property '%s' size (%d) is invalid, expected multiple of %ld in node %s",
-		     prop->name, prop->val.len, sizeof(cell_t), node->fullpath);
+		FAIL_PROP(c, dti, node, prop,
+			  "property size (%d) is invalid, expected multiple of %zu",
+			  prop->val.len, sizeof(cell_t));
 		return;
 	}
 
@@ -988,6 +1170,10 @@
 		 * entries when each index position has a specific definition.
 		 */
 		if (phandle == 0 || phandle == -1) {
+			/* Give up if this is an overlay with external references */
+			if (dti->dtsflags & DTSF_PLUGIN)
+				break;
+
 			cellsize = 0;
 			continue;
 		}
@@ -1000,14 +1186,16 @@
 					break;
 			}
 			if (!m)
-				FAIL(c, dti, "Property '%s', cell %d is not a phandle reference in %s",
-				     prop->name, cell, node->fullpath);
+				FAIL_PROP(c, dti, node, prop,
+					  "cell %d is not a phandle reference",
+					  cell);
 		}
 
 		provider_node = get_node_by_phandle(root, phandle);
 		if (!provider_node) {
-			FAIL(c, dti, "Could not get phandle node for %s:%s(cell %d)",
-			     node->fullpath, prop->name, cell);
+			FAIL_PROP(c, dti, node, prop,
+				  "Could not get phandle node for (cell %d)",
+				  cell);
 			break;
 		}
 
@@ -1017,16 +1205,17 @@
 		} else if (provider->optional) {
 			cellsize = 0;
 		} else {
-			FAIL(c, dti, "Missing property '%s' in node %s or bad phandle (referred from %s:%s[%d])",
+			FAIL(c, dti, node, "Missing property '%s' in node %s or bad phandle (referred from %s[%d])",
 			     provider->cell_name,
 			     provider_node->fullpath,
-			     node->fullpath, prop->name, cell);
+			     prop->name, cell);
 			break;
 		}
 
 		if (prop->val.len < ((cell + cellsize + 1) * sizeof(cell_t))) {
-			FAIL(c, dti, "%s property size (%d) too small for cell size %d in %s",
-			     prop->name, prop->val.len, cellsize, node->fullpath);
+			FAIL_PROP(c, dti, node, prop,
+				  "property size (%d) too small for cell size %d",
+				  prop->val.len, cellsize);
 		}
 	}
 }
@@ -1062,7 +1251,7 @@
 WARNING_PROPERTY_PHANDLE_CELLS(power_domains, "power-domains", "#power-domain-cells");
 WARNING_PROPERTY_PHANDLE_CELLS(pwms, "pwms", "#pwm-cells");
 WARNING_PROPERTY_PHANDLE_CELLS(resets, "resets", "#reset-cells");
-WARNING_PROPERTY_PHANDLE_CELLS(sound_dais, "sound-dais", "#sound-dai-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(sound_dai, "sound-dai", "#sound-dai-cells");
 WARNING_PROPERTY_PHANDLE_CELLS(thermal_sensors, "thermal-sensors", "#thermal-sensor-cells");
 
 static bool prop_is_gpio(struct property *prop)
@@ -1128,8 +1317,8 @@
 		if (!streq(str, "gpio"))
 			continue;
 
-		FAIL(c, dti, "'[*-]gpio' is deprecated, use '[*-]gpios' instead for %s:%s",
-		     node->fullpath, prop->name);
+		FAIL_PROP(c, dti, node, prop,
+			  "'[*-]gpio' is deprecated, use '[*-]gpios' instead");
 	}
 
 }
@@ -1163,9 +1352,8 @@
 		return;
 
 	if (irq_prop->val.len % sizeof(cell_t))
-		FAIL(c, dti, "property '%s' size (%d) is invalid, expected multiple of %ld in node %s",
-		     irq_prop->name, irq_prop->val.len, sizeof(cell_t),
-		     node->fullpath);
+		FAIL_PROP(c, dti, node, irq_prop, "size (%d) is invalid, expected multiple of %zu",
+		     irq_prop->val.len, sizeof(cell_t));
 
 	while (parent && !prop) {
 		if (parent != node && node_is_interrupt_provider(parent)) {
@@ -1176,16 +1364,19 @@
 		prop = get_property(parent, "interrupt-parent");
 		if (prop) {
 			phandle = propval_cell(prop);
+			/* Give up if this is an overlay with external references */
+			if ((phandle == 0 || phandle == -1) &&
+			    (dti->dtsflags & DTSF_PLUGIN))
+					return;
+
 			irq_node = get_node_by_phandle(root, phandle);
 			if (!irq_node) {
-				FAIL(c, dti, "Bad interrupt-parent phandle for %s",
-				     node->fullpath);
+				FAIL_PROP(c, dti, parent, prop, "Bad phandle");
 				return;
 			}
 			if (!node_is_interrupt_provider(irq_node))
-				FAIL(c, dti,
-				     "Missing interrupt-controller or interrupt-map property in %s",
-				     irq_node->fullpath);
+				FAIL(c, dti, irq_node,
+				     "Missing interrupt-controller or interrupt-map property");
 
 			break;
 		}
@@ -1194,27 +1385,171 @@
 	}
 
 	if (!irq_node) {
-		FAIL(c, dti, "Missing interrupt-parent for %s", node->fullpath);
+		FAIL(c, dti, node, "Missing interrupt-parent");
 		return;
 	}
 
 	prop = get_property(irq_node, "#interrupt-cells");
 	if (!prop) {
-		FAIL(c, dti, "Missing #interrupt-cells in interrupt-parent %s",
-		     irq_node->fullpath);
+		FAIL(c, dti, irq_node, "Missing #interrupt-cells in interrupt-parent");
 		return;
 	}
 
 	irq_cells = propval_cell(prop);
 	if (irq_prop->val.len % (irq_cells * sizeof(cell_t))) {
-		FAIL(c, dti,
-		     "interrupts size is (%d), expected multiple of %d in %s",
-		     irq_prop->val.len, (int)(irq_cells * sizeof(cell_t)),
-		     node->fullpath);
+		FAIL_PROP(c, dti, node, prop,
+			  "size is (%d), expected multiple of %d",
+			  irq_prop->val.len, (int)(irq_cells * sizeof(cell_t)));
 	}
 }
 WARNING(interrupts_property, check_interrupts_property, &phandle_references);
 
+static const struct bus_type graph_port_bus = {
+	.name = "graph-port",
+};
+
+static const struct bus_type graph_ports_bus = {
+	.name = "graph-ports",
+};
+
+static void check_graph_nodes(struct check *c, struct dt_info *dti,
+			      struct node *node)
+{
+	struct node *child;
+
+	for_each_child(node, child) {
+		if (!(strprefixeq(child->name, child->basenamelen, "endpoint") ||
+		      get_property(child, "remote-endpoint")))
+			continue;
+
+		node->bus = &graph_port_bus;
+
+		/* The parent of 'port' nodes can be either 'ports' or a device */
+		if (!node->parent->bus &&
+		    (streq(node->parent->name, "ports") || get_property(node, "reg")))
+			node->parent->bus = &graph_ports_bus;
+
+		break;
+	}
+
+}
+WARNING(graph_nodes, check_graph_nodes, NULL);
+
+static void check_graph_child_address(struct check *c, struct dt_info *dti,
+				      struct node *node)
+{
+	int cnt = 0;
+	struct node *child;
+
+	if (node->bus != &graph_ports_bus && node->bus != &graph_port_bus)
+		return;
+
+	for_each_child(node, child) {
+		struct property *prop = get_property(child, "reg");
+
+		/* No error if we have any non-zero unit address */
+		if (prop && propval_cell(prop) != 0)
+			return;
+
+		cnt++;
+	}
+
+	if (cnt == 1 && node->addr_cells != -1)
+		FAIL(c, dti, node, "graph node has single child node '%s', #address-cells/#size-cells are not necessary",
+		     node->children->name);
+}
+WARNING(graph_child_address, check_graph_child_address, NULL, &graph_nodes);
+
+static void check_graph_reg(struct check *c, struct dt_info *dti,
+			    struct node *node)
+{
+	char unit_addr[9];
+	const char *unitname = get_unitname(node);
+	struct property *prop;
+
+	prop = get_property(node, "reg");
+	if (!prop || !unitname)
+		return;
+
+	if (!(prop->val.val && prop->val.len == sizeof(cell_t))) {
+		FAIL(c, dti, node, "graph node malformed 'reg' property");
+		return;
+	}
+
+	snprintf(unit_addr, sizeof(unit_addr), "%x", propval_cell(prop));
+	if (!streq(unitname, unit_addr))
+		FAIL(c, dti, node, "graph node unit address error, expected \"%s\"",
+		     unit_addr);
+
+	if (node->parent->addr_cells != 1)
+		FAIL_PROP(c, dti, node, get_property(node, "#address-cells"),
+			  "graph node '#address-cells' is %d, must be 1",
+			  node->parent->addr_cells);
+	if (node->parent->size_cells != 0)
+		FAIL_PROP(c, dti, node, get_property(node, "#size-cells"),
+			  "graph node '#size-cells' is %d, must be 0",
+			  node->parent->size_cells);
+}
+
+static void check_graph_port(struct check *c, struct dt_info *dti,
+			     struct node *node)
+{
+	if (node->bus != &graph_port_bus)
+		return;
+
+	if (!strprefixeq(node->name, node->basenamelen, "port"))
+		FAIL(c, dti, node, "graph port node name should be 'port'");
+
+	check_graph_reg(c, dti, node);
+}
+WARNING(graph_port, check_graph_port, NULL, &graph_nodes);
+
+static struct node *get_remote_endpoint(struct check *c, struct dt_info *dti,
+					struct node *endpoint)
+{
+	int phandle;
+	struct node *node;
+	struct property *prop;
+
+	prop = get_property(endpoint, "remote-endpoint");
+	if (!prop)
+		return NULL;
+
+	phandle = propval_cell(prop);
+	/* Give up if this is an overlay with external references */
+	if (phandle == 0 || phandle == -1)
+		return NULL;
+
+	node = get_node_by_phandle(dti->dt, phandle);
+	if (!node)
+		FAIL_PROP(c, dti, endpoint, prop, "graph phandle is not valid");
+
+	return node;
+}
+
+static void check_graph_endpoint(struct check *c, struct dt_info *dti,
+				 struct node *node)
+{
+	struct node *remote_node;
+
+	if (!node->parent || node->parent->bus != &graph_port_bus)
+		return;
+
+	if (!strprefixeq(node->name, node->basenamelen, "endpoint"))
+		FAIL(c, dti, node, "graph endpont node name should be 'endpoint'");
+
+	check_graph_reg(c, dti, node);
+
+	remote_node = get_remote_endpoint(c, dti, node);
+	if (!remote_node)
+		return;
+
+	if (get_remote_endpoint(c, dti, remote_node) != node)
+		FAIL(c, dti, node, "graph connection to node '%s' is not bidirectional",
+		     remote_node->fullpath);
+}
+WARNING(graph_endpoint, check_graph_endpoint, NULL, &graph_nodes);
+
 static struct check *check_table[] = {
 	&duplicate_node_names, &duplicate_property_names,
 	&node_name_chars, &node_name_format, &property_name_chars,
@@ -1224,9 +1559,13 @@
 
 	&explicit_phandles,
 	&phandle_references, &path_references,
+	&omit_unused_nodes,
 
 	&address_cells_is_cell, &size_cells_is_cell, &interrupt_cells_is_cell,
 	&device_type_is_string, &model_is_string, &status_is_string,
+	&label_is_string,
+
+	&compatible_is_string_list, &names_is_string_list,
 
 	&property_name_chars_strict,
 	&node_name_chars_strict,
@@ -1244,7 +1583,10 @@
 	&simple_bus_reg,
 
 	&avoid_default_addr_size,
+	&avoid_unnecessary_addr_size,
+	&unique_unit_address,
 	&obsolete_chosen_interrupt_controller,
+	&chosen_node_is_root, &chosen_node_bootargs, &chosen_node_stdout_path,
 
 	&clocks_property,
 	&cooling_device_property,
@@ -1260,13 +1602,17 @@
 	&power_domains_property,
 	&pwms_property,
 	&resets_property,
-	&sound_dais_property,
+	&sound_dai_property,
 	&thermal_sensors_property,
 
 	&deprecated_gpio_property,
 	&gpios_property,
 	&interrupts_property,
 
+	&alias_paths,
+
+	&graph_nodes, &graph_child_address, &graph_port, &graph_endpoint,
+
 	&always_fail,
 };
 
diff -Nru device-tree-compiler-1.4.5/data.c device-tree-compiler-1.4.7/data.c
--- device-tree-compiler-1.4.5/data.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/data.c	2018-07-23 03:00:50.000000000 +0000
@@ -74,7 +74,8 @@
 	struct data d;
 	char *q;
 
-	d = data_grow_for(empty_data, len + 1);
+	d = data_add_marker(empty_data, TYPE_STRING, NULL);
+	d = data_grow_for(d, len + 1);
 
 	q = d.val;
 	while (i < len) {
@@ -94,6 +95,7 @@
 {
 	struct data d = empty_data;
 
+	d = data_add_marker(d, TYPE_BLOB, NULL);
 	while (!feof(f) && (d.len < maxlen)) {
 		size_t chunksize, ret;
 
diff -Nru device-tree-compiler-1.4.5/debian/changelog device-tree-compiler-1.4.7/debian/changelog
--- device-tree-compiler-1.4.5/debian/changelog	2017-10-06 18:51:12.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/changelog	2019-08-16 15:29:04.000000000 +0000
@@ -1,6 +1,73 @@
+device-tree-compiler (1.4.7-3ubuntu2~cloud0) bionic-train; urgency=medium
+
+  * New update for the Ubuntu Cloud Archive.
+
+ -- Openstack Ubuntu Testing Bot <openstack-testing-bot@ubuntu.com>  Fri, 16 Aug 2019 15:29:04 +0000
+
+device-tree-compiler (1.4.7-3ubuntu2) eoan; urgency=medium
+
+  * d/control: run update maintainer that was forgotten on the former upload,
+    but required when deriving from Debian.
+
+ -- Christian Ehrhardt <christian.ehrhardt@canonical.com>  Tue, 25 Jun 2019 09:54:00 +0200
+
+device-tree-compiler (1.4.7-3ubuntu1) eoan; urgency=medium
+
+  * d/p/lp-1834143-Update-version.lds.patch: fix the lack of function exports
+    for fdt_get_max_phandle, fdt_check_full, fdt_setprop_placeholder and
+    fdt_property_placeholder to avoid users of libfdt.h to FTBFS (LP: #1834143)
+
+ -- Christian Ehrhardt <christian.ehrhardt@canonical.com>  Tue, 25 Jun 2019 08:19:06 +0200
+
+device-tree-compiler (1.4.7-3) unstable; urgency=medium
+
+  * Add Build-Depends on pkg-config, which is used to check for valgrind.
+
+ -- Vagrant Cascadian <vagrant@debian.org>  Tue, 11 Sep 2018 00:51:07 -0700
+
+device-tree-compiler (1.4.7-2) unstable; urgency=medium
+
+  * Add patch from upstream making valgrind optional.
+  * Only Build-Depend on valgrind for architectures where valgrind is
+    available.
+  * Update Standards-Version to 4.2.1, no changes needed.
+
+ -- Vagrant Cascadian <vagrant@debian.org>  Mon, 10 Sep 2018 23:11:53 -0700
+
+device-tree-compiler (1.4.7-1) unstable; urgency=medium
+
+  * New upstream release.
+  * debian/control:
+    - Add Build-Depends on valgrind, used in tests.
+    - Add Rules-Requires-Root: no.
+    - Update Standards-Version to 4.2.0.
+
+ -- Vagrant Cascadian <vagrant@debian.org>  Thu, 16 Aug 2018 13:38:37 -0700
+
+device-tree-compiler (1.4.6-1) unstable; urgency=medium
+
+  [ Vagrant Cascadian ]
+  * New upstream release.
+  * Drop patches applied upstream.
+  * Update debian/watch:
+    - Use tarballs downloaded from https://www.kernel.org/pub instead of
+      generated tarballs from git tags.
+    - Check signature of downloaded tarball. Thanks to Osamu Aoki.
+  * Use debhelper compat level 11.
+  * Update to Standards-Version 4.1.4, no changes needed.
+  * Support "nodoc" in DEB_BUILD_PROFILES and DEB_BUILD_OPTIONS.
+  * Make build more verbose.
+  * Use dpkg buildflags.mk, passing CFLAGS and CPPFLAGS to build.
+
+  [ Dima Kogan ]
+  * Moved Vcs tags to point to salsa.
+
+ -- Vagrant Cascadian <vagrant@debian.org>  Thu, 26 Apr 2018 11:02:44 -0700
+
 device-tree-compiler (1.4.5-3) unstable; urgency=medium
 
-  * Add patch from upstream to fix bugs in testsuite for 32-bit arm. (Closes: #877797)
+  * Add patch from upstream to fix bugs in testsuite for 32-bit
+    arm. (Closes: #877797)
 
  -- Vagrant Cascadian <vagrant@debian.org>  Fri, 06 Oct 2017 11:51:12 -0700
 
diff -Nru device-tree-compiler-1.4.5/debian/compat device-tree-compiler-1.4.7/debian/compat
--- device-tree-compiler-1.4.5/debian/compat	2017-10-06 17:35:17.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/compat	2019-06-06 06:02:32.000000000 +0000
@@ -1 +1 @@
-10
+11
diff -Nru device-tree-compiler-1.4.5/debian/control device-tree-compiler-1.4.7/debian/control
--- device-tree-compiler-1.4.5/debian/control	2017-10-06 17:35:17.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/control	2019-06-25 07:53:52.000000000 +0000
@@ -1,13 +1,21 @@
 Source: device-tree-compiler
 Section: devel
 Priority: optional
-Maintainer: Héctor Orón Martínez <zumbi@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Héctor Orón Martínez <zumbi@debian.org>
 Uploaders: Riku Voipio <riku.voipio@linaro.org>, Vagrant Cascadian <vagrant@debian.org>
-Standards-Version: 4.1.0
-Build-Depends: debhelper (>= 10), flex, bison, texlive, texlive-latex-extra
+Standards-Version: 4.2.1
+Build-Depends: debhelper (>= 11),
+ flex,
+ bison,
+ pkg-config,
+ texlive <!nodoc>,
+ texlive-latex-extra <!nodoc>,
+ valgrind [amd64 arm64 armhf i386 mips mips64el mipsel powerpc ppc64 ppc64el s390x],
+Rules-Requires-Root: no
 Homepage: https://git.kernel.org/cgit/utils/dtc/dtc.git
-Vcs-Git: https://anonscm.debian.org/git/crosstoolchain/device-tree-compiler.git
-Vcs-Browser: https://anonscm.debian.org/cgit/crosstoolchain/device-tree-compiler.git/
+Vcs-Git: https://salsa.debian.org/crosstoolchain-team/device-tree-compiler.git
+Vcs-Browser: https://salsa.debian.org/crosstoolchain-team/device-tree-compiler
 
 Package: device-tree-compiler
 Architecture: any
diff -Nru device-tree-compiler-1.4.5/debian/patches/02-checks-Use-proper-format-modifier-for-size_t.patch device-tree-compiler-1.4.7/debian/patches/02-checks-Use-proper-format-modifier-for-size_t.patch
--- device-tree-compiler-1.4.5/debian/patches/02-checks-Use-proper-format-modifier-for-size_t.patch	2017-10-06 17:35:17.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/patches/02-checks-Use-proper-format-modifier-for-size_t.patch	1970-01-01 00:00:00.000000000 +0000
@@ -1,41 +0,0 @@
-From 497432fd2131967f349e69dc5d259072151cc4b4 Mon Sep 17 00:00:00 2001
-From: Thierry Reding <treding@nvidia.com>
-Date: Wed, 27 Sep 2017 15:04:09 +0200
-Subject: [PATCH 1/3] checks: Use proper format modifier for size_t
-
-The size of size_t can vary between architectures, so using %ld isn't
-going to work on 32-bit builds. Use the %zu modifier to make sure it is
-always correct.
-
-Signed-off-by: Thierry Reding <treding@nvidia.com>
-Acked-by: Rob Herring <robh@kernel.org>
-Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
----
- checks.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/checks.c b/checks.c
-index 902f2e3..08a3a29 100644
---- a/checks.c
-+++ b/checks.c
-@@ -972,7 +972,7 @@ static void check_property_phandle_args(struct check *c,
- 	int cell, cellsize = 0;
- 
- 	if (prop->val.len % sizeof(cell_t)) {
--		FAIL(c, dti, "property '%s' size (%d) is invalid, expected multiple of %ld in node %s",
-+		FAIL(c, dti, "property '%s' size (%d) is invalid, expected multiple of %zu in node %s",
- 		     prop->name, prop->val.len, sizeof(cell_t), node->fullpath);
- 		return;
- 	}
-@@ -1163,7 +1163,7 @@ static void check_interrupts_property(struct check *c,
- 		return;
- 
- 	if (irq_prop->val.len % sizeof(cell_t))
--		FAIL(c, dti, "property '%s' size (%d) is invalid, expected multiple of %ld in node %s",
-+		FAIL(c, dti, "property '%s' size (%d) is invalid, expected multiple of %zu in node %s",
- 		     irq_prop->name, irq_prop->val.len, sizeof(cell_t),
- 		     node->fullpath);
- 
--- 
-2.11.0
-
diff -Nru device-tree-compiler-1.4.5/debian/patches/02-Make-valgrind-optional.patch device-tree-compiler-1.4.7/debian/patches/02-Make-valgrind-optional.patch
--- device-tree-compiler-1.4.5/debian/patches/02-Make-valgrind-optional.patch	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/patches/02-Make-valgrind-optional.patch	2019-06-06 06:02:32.000000000 +0000
@@ -0,0 +1,102 @@
+From b94c056b137e59deefc62fbfe0cd3a23edfcc07c Mon Sep 17 00:00:00 2001
+From: David Gibson <david@gibson.dropbear.id.au>
+Date: Mon, 10 Sep 2018 16:46:59 +1000
+Subject: [PATCH] Make valgrind optional
+
+Some platforms don't have valgrind support, and sometimes you simply might
+not want to use valgrind.  But at present, dtc, or more specifically its
+testsuite, won't compile without valgrind because we use the valgrind
+client interface in some places to improve our testing and suppress false
+positives.
+
+This adds some Makefile detection to correctly handle the case where
+valgrind is not available.
+
+Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
+---
+ .travis.yml          |  9 +++------
+ Makefile             |  7 +++++++
+ tests/Makefile.tests |  5 +++++
+ tests/testutils.c    | 10 ++++++++++
+ 4 files changed, 25 insertions(+), 6 deletions(-)
+
+diff --git a/.travis.yml b/.travis.yml
+index 87adfa0..ecdef0d 100644
+--- a/.travis.yml
++++ b/.travis.yml
+@@ -25,11 +25,8 @@ matrix:
+         - make
+         - make check && make checkm
+ 
+-    # Check it builds properly without the python bits
+-    - addons:
+-        apt:
+-          packages:
+-            - valgrind
+-      script:
++    # Check it builds properly without optional packages:
++    #     python, valgrind
++    - script:
+         - make
+         - make check
+diff --git a/Makefile b/Makefile
+index d8ebc4f..c4bfae6 100644
+--- a/Makefile
++++ b/Makefile
+@@ -39,6 +39,13 @@ INCLUDEDIR = $(PREFIX)/include
+ HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
+ 	    sed -e 's/\(cygwin\|msys\).*/\1/')
+ 
++NO_VALGRIND := $(shell $(PKG_CONFIG) --exists valgrind; echo $$?)
++ifeq ($(NO_VALGRIND),1)
++	CFLAGS += -DNO_VALGRIND
++else
++	CFLAGS += $(shell $(PKG_CONFIG) --cflags valgrind)
++endif
++
+ ifeq ($(HOSTOS),darwin)
+ SHAREDLIB_EXT     = dylib
+ SHAREDLIB_CFLAGS  = -fPIC
+diff --git a/tests/Makefile.tests b/tests/Makefile.tests
+index 6903333..bd1c8ef 100644
+--- a/tests/Makefile.tests
++++ b/tests/Makefile.tests
+@@ -83,8 +83,13 @@ tests_clean:
+ check:	tests ${TESTS_BIN} $(TESTS_PYLIBFDT)
+ 	cd $(TESTS_PREFIX); ./run_tests.sh
+ 
++ifeq ($(NO_VALGRIND),1)
++checkm:
++	@echo "make checkm requires valgrind, but NO_VALGRIND=1"
++else
+ checkm: tests ${TESTS_BIN} $(TESTS_PYLIBFDT)
+ 	cd $(TESTS_PREFIX); ./run_tests.sh -m 2>&1 | tee vglog.$$$$
++endif
+ 
+ checkv:	tests ${TESTS_BIN} $(TESTS_PYLIBFDT)
+ 	cd $(TESTS_PREFIX); ./run_tests.sh -v
+diff --git a/tests/testutils.c b/tests/testutils.c
+index 75e3e20..0217b02 100644
+--- a/tests/testutils.c
++++ b/tests/testutils.c
+@@ -30,7 +30,17 @@
+ #include <unistd.h>
+ #include <fcntl.h>
+ 
++#if NO_VALGRIND
++static inline void VALGRIND_MAKE_MEM_UNDEFINED(void *p, size_t len)
++{
++}
++
++static inline void VALGRIND_MAKE_MEM_DEFINED(void *p, size_t len)
++{
++}
++#else
+ #include <valgrind/memcheck.h>
++#endif
+ 
+ #include <libfdt.h>
+ 
+-- 
+2.11.0
+
diff -Nru device-tree-compiler-1.4.5/debian/patches/03-tests-Avoid-64-bit-arithmetic-in-assembler.patch device-tree-compiler-1.4.7/debian/patches/03-tests-Avoid-64-bit-arithmetic-in-assembler.patch
--- device-tree-compiler-1.4.5/debian/patches/03-tests-Avoid-64-bit-arithmetic-in-assembler.patch	2017-10-06 17:35:54.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/patches/03-tests-Avoid-64-bit-arithmetic-in-assembler.patch	1970-01-01 00:00:00.000000000 +0000
@@ -1,138 +0,0 @@
-From f8872e29ce06d78d3db71b3ab26a7465fc8a9586 Mon Sep 17 00:00:00 2001
-From: David Gibson <david@gibson.dropbear.id.au>
-Date: Fri, 6 Oct 2017 23:07:30 +1100
-Subject: [PATCH] tests: Avoid 64-bit arithmetic in assembler
-
-For testing we (ab)use the assembler to build us a sample dtb, independent
-of the other tools (dtc and libfdt) that we're trying to test.  In a few
-places this uses 64-bit arithmetic to decompose 64-bit constants into
-the individual bytes in the blob.
-
-Unfortunately, it seems that some builds of GNU as don't support >32 bit
-arithmetic, though it's not entirely clear to me which do and which don't
-(Fedora i386 does support 64-bit, Debian arm32 doesn't).
-
-Anyway, to be safe, this avoids 64-bit arithmetic in assembler at the cost
-of some extra awkwardness because we have to define the values in 32-bit
-halves.
-
-Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
----
- tests/testdata.h | 20 +++++++++++++++-----
- tests/trees.S    | 33 +++++++++++++--------------------
- 2 files changed, 28 insertions(+), 25 deletions(-)
-
-diff --git a/tests/testdata.h b/tests/testdata.h
-index 3588778..f6bbe1d 100644
---- a/tests/testdata.h
-+++ b/tests/testdata.h
-@@ -4,15 +4,25 @@
- #define ASM_CONST_LL(x)	(x##ULL)
- #endif
- 
--#define TEST_ADDR_1	ASM_CONST_LL(0xdeadbeef00000000)
--#define TEST_SIZE_1	ASM_CONST_LL(0x100000)
--#define TEST_ADDR_2	ASM_CONST_LL(123456789)
--#define TEST_SIZE_2	ASM_CONST_LL(010000)
-+#define TEST_ADDR_1H	ASM_CONST_LL(0xdeadbeef)
-+#define TEST_ADDR_1L	ASM_CONST_LL(0x00000000)
-+#define TEST_ADDR_1	((TEST_ADDR_1H << 32) | TEST_ADDR_1L)
-+#define TEST_SIZE_1H	ASM_CONST_LL(0x00000000)
-+#define TEST_SIZE_1L	ASM_CONST_LL(0x00100000)
-+#define TEST_SIZE_1	((TEST_SIZE_1H << 32) | TEST_SIZE_1L)
-+#define TEST_ADDR_2H	ASM_CONST_LL(0)
-+#define TEST_ADDR_2L	ASM_CONST_LL(123456789)
-+#define TEST_ADDR_2	((TEST_ADDR_2H << 32) | TEST_ADDR_2L)
-+#define TEST_SIZE_2H	ASM_CONST_LL(0)
-+#define TEST_SIZE_2L	ASM_CONST_LL(010000)
-+#define TEST_SIZE_2	((TEST_SIZE_2H << 32) | TEST_SIZE_2L)
- 
- #define TEST_VALUE_1	0xdeadbeef
- #define TEST_VALUE_2	123456789
- 
--#define TEST_VALUE64_1	ASM_CONST_LL(0xdeadbeef01abcdef)
-+#define TEST_VALUE64_1H	ASM_CONST_LL(0xdeadbeef)
-+#define TEST_VALUE64_1L	ASM_CONST_LL(0x01abcdef)
-+#define TEST_VALUE64_1	((TEST_VALUE64_1H << 32) | TEST_VALUE64_1L)
- 
- #define PHANDLE_1	0x2000
- #define PHANDLE_2	0x2001
-diff --git a/tests/trees.S b/tests/trees.S
-index 9854d1d..9859914 100644
---- a/tests/trees.S
-+++ b/tests/trees.S
-@@ -7,16 +7,6 @@
- 	.byte	((val) >> 8) & 0xff ; \
- 	.byte	(val) & 0xff	;
- 
--#define FDTQUAD(val) \
--	.byte	((val) >> 56) & 0xff ; \
--	.byte	((val) >> 48) & 0xff ; \
--	.byte	((val) >> 40) & 0xff ; \
--	.byte	((val) >> 32) & 0xff ; \
--	.byte	((val) >> 24) & 0xff ; \
--	.byte	((val) >> 16) & 0xff ; \
--	.byte	((val) >> 8) & 0xff ; \
--	.byte	(val) & 0xff	;
--
- #define TREE_HDR(tree) \
- 	.balign	8		; \
- 	.globl	_##tree		; \
-@@ -33,14 +23,16 @@ tree:	\
- 	FDTLONG(tree##_strings_end - tree##_strings) ; \
- 	FDTLONG(tree##_struct_end - tree##_struct) ;
- 
--#define RSVMAP_ENTRY(addr, len) \
--	FDTQUAD(addr)		; \
--	FDTQUAD(len)		; \
-+#define RSVMAP_ENTRY(addrh, addrl, lenh, lenl) \
-+	FDTLONG(addrh)		; \
-+	FDTLONG(addrl)		; \
-+	FDTLONG(lenh)		; \
-+	FDTLONG(lenl)
- 
- #define EMPTY_RSVMAP(tree) \
- 	.balign	8		; \
- tree##_rsvmap:			; \
--	RSVMAP_ENTRY(0, 0) \
-+	RSVMAP_ENTRY(0, 0, 0, 0) \
- tree##_rsvmap_end:		;
- 
- #define PROPHDR(tree, name, len) \
-@@ -52,9 +44,10 @@ tree##_rsvmap_end:		;
- 	PROPHDR(tree, name, 4) \
- 	FDTLONG(val)		;
- 
--#define PROP_INT64(tree, name, val) \
-+#define PROP_INT64(tree, name, valh, vall) \
- 	PROPHDR(tree, name, 8) \
--	FDTQUAD(val)		;
-+	FDTLONG(valh)		; \
-+	FDTLONG(vall)		;
- 
- #define PROP_STR(tree, name, str) \
- 	PROPHDR(tree, name, 55f - 54f) \
-@@ -81,16 +74,16 @@ tree##_##name:			; \
- 
- 	.balign	8
- test_tree1_rsvmap:
--	RSVMAP_ENTRY(TEST_ADDR_1, TEST_SIZE_1)
--	RSVMAP_ENTRY(TEST_ADDR_2, TEST_SIZE_2)
--	RSVMAP_ENTRY(0, 0)
-+	RSVMAP_ENTRY(TEST_ADDR_1H, TEST_ADDR_1L, TEST_SIZE_1H, TEST_SIZE_1L)
-+	RSVMAP_ENTRY(TEST_ADDR_2H, TEST_ADDR_2L, TEST_SIZE_2H, TEST_SIZE_2L)
-+	RSVMAP_ENTRY(0, 0, 0, 0)
- test_tree1_rsvmap_end:
- 
- test_tree1_struct:
- 	BEGIN_NODE("")
- 	PROP_STR(test_tree1, compatible, "test_tree1")
- 	PROP_INT(test_tree1, prop_int, TEST_VALUE_1)
--	PROP_INT64(test_tree1, prop_int64, TEST_VALUE64_1)
-+	PROP_INT64(test_tree1, prop_int64, TEST_VALUE64_1H, TEST_VALUE64_1L)
- 	PROP_STR(test_tree1, prop_str, TEST_STRING_1)
- 	PROP_INT(test_tree1, address_cells, 1)
- 	PROP_INT(test_tree1, size_cells, 0)
--- 
-2.11.0
-
diff -Nru device-tree-compiler-1.4.5/debian/patches/lp-1834143-Update-version.lds.patch device-tree-compiler-1.4.7/debian/patches/lp-1834143-Update-version.lds.patch
--- device-tree-compiler-1.4.5/debian/patches/lp-1834143-Update-version.lds.patch	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/patches/lp-1834143-Update-version.lds.patch	2019-06-25 06:17:55.000000000 +0000
@@ -0,0 +1,44 @@
+From eac2ad495b29f15d78daa2a7226653f36515cd7a Mon Sep 17 00:00:00 2001
+From: David Gibson <david@gibson.dropbear.id.au>
+Date: Mon, 25 Mar 2019 14:52:47 +1100
+Subject: [PATCH] Update version.lds again
+
+Yet again, we've added several functions to libfdt that were supposed
+to be exported, but forgotten to add them to the versio.lds script.
+This adds them.
+
+Note: this is required to make the new functions in 1.4.7 like
+fdt_check_full usable from the .so file. The archive will follow
+upstream, but the IBM cloud PPA will use this backport of the fix
+to be able to build already.
+Origin: upstream, https://github.com/dgibson/dtc/commit/eac2ad49
+Last-Update: 2019-06-06
+
+Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
+
+Origin: upstream, https://github.com/dgibson/dtc/commit/eac2ad49
+Bug-Ubuntu: https://bugs.launchpad.net/bugs/1834143
+Last-Update: 2019-06-25
+
+---
+ libfdt/version.lds | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/libfdt/version.lds b/libfdt/version.lds
+index 9f5d708..a5fe62d 100644
+--- a/libfdt/version.lds
++++ b/libfdt/version.lds
+@@ -66,6 +66,10 @@ LIBFDT_1.2 {
+ 		fdt_resize;
+ 		fdt_overlay_apply;
+ 		fdt_get_string;
++		fdt_get_max_phandle;
++		fdt_check_full;
++		fdt_setprop_placeholder;
++		fdt_property_placeholder;
+ 	local:
+ 		*;
+ };
+-- 
+2.21.0
+
diff -Nru device-tree-compiler-1.4.5/debian/patches/series device-tree-compiler-1.4.7/debian/patches/series
--- device-tree-compiler-1.4.5/debian/patches/series	2017-10-06 17:36:17.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/patches/series	2019-06-25 06:15:58.000000000 +0000
@@ -1,3 +1,3 @@
 01_build_doc.patch
-02-checks-Use-proper-format-modifier-for-size_t.patch
-03-tests-Avoid-64-bit-arithmetic-in-assembler.patch
+02-Make-valgrind-optional.patch
+lp-1834143-Update-version.lds.patch
diff -Nru device-tree-compiler-1.4.5/debian/rules device-tree-compiler-1.4.7/debian/rules
--- device-tree-compiler-1.4.5/debian/rules	2017-10-06 17:35:17.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/rules	2019-06-06 06:02:32.000000000 +0000
@@ -7,8 +7,6 @@
 
 export DEB_BUILD_MAINT_OPTIONS=hardening=+all
 
-export CFLAGS = -Wall -g -fPIC
-
 # python library builds with warnings, temporarily disabled.
 export NO_PYTHON = 1
 
@@ -17,18 +15,20 @@
 export CC = $(DEB_HOST_GNU_TYPE)-gcc
 endif
 
-ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
-	CFLAGS += -O0
-else
-	CFLAGS += -O2
-endif
+include /usr/share/dpkg/buildflags.mk
+CFLAGS += -fPIC -Werror -Wall -Wpointer-arith -Wcast-qual	\
+	-Wnested-externs -Wstrict-prototypes -Wmissing-prototypes	\
+	-Wredundant-decls -Wshadow
+CPPFLAGS += -I libfdt -I .
 
 %:
 	dh $@
 
 override_dh_auto_build:
-	dh_auto_build 
+	dh_auto_build -- V=1 CFLAGS="$(CFLAGS)" CPPFLAGS="$(CPPFLAGS)"
+ifeq (,$(findstring nodoc,$(DEB_BUILD_OPTIONS)))
 	$(MAKE) -C Documentation
+endif
 
 override_dh_auto_install:
 	$(MAKE) install DESTDIR=$(CURDIR)/debian/tmp PREFIX=/usr LIBDIR=/usr/lib/$(DEB_HOST_MULTIARCH)
diff -Nru device-tree-compiler-1.4.5/debian/upstream/signing-key.asc device-tree-compiler-1.4.7/debian/upstream/signing-key.asc
--- device-tree-compiler-1.4.5/debian/upstream/signing-key.asc	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/upstream/signing-key.asc	2019-06-06 06:02:32.000000000 +0000
@@ -0,0 +1,89 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mQINBFILNF4BEADnwUE61jAXuQsnqugpL0ANYmEBadAS/hCpJvXKfoa4bgSw3NfQ
+G6UmtFt+CzAmERaV9lmZ246dk4BSyCxUnWGUfBs8xxIqhVqkXWvhw2PsRSjMciXf
+qKvdvp49AFdKiqzjLF6OeRfBePK5X7XfuSsTu1zT+u9jUAKMesJbW+5BIUdnOqGz
+oh2lSwi9ajy0NBr6rUQ+B+v0m4vaSGSO2XR1P16pslBp9F/HnSHILIvFEoebjnBe
+BNQXNnaNHMDF14Oj8JN5ewqbii8HzeKHw9Atz9rmH7DKWPEIcwL9fz4/zp+fib1Q
+w1tuKbhz5jXTmGmK0+iPPZH9KRbnrUd/T1wcglYGdzYGtQM6Gq/awJoPYGG1SMRH
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+=Z9nT
+-----END PGP PUBLIC KEY BLOCK-----
diff -Nru device-tree-compiler-1.4.5/debian/watch device-tree-compiler-1.4.7/debian/watch
--- device-tree-compiler-1.4.5/debian/watch	2017-10-06 17:35:17.000000000 +0000
+++ device-tree-compiler-1.4.7/debian/watch	2019-06-06 06:02:32.000000000 +0000
@@ -1,3 +1,5 @@
 version=4
-https://git.kernel.org/pub/scm/utils/dtc/dtc.git \
-  .*/snapshot/dtc-@ANY_VERSION@@ARCHIVE_EXT@
+opts="pgpmode=mangle, pgpsigurlmangle=s%tar\..z$%tar\.sign%, decompress" \
+https://www.kernel.org/pub/software/utils/dtc/ \
+  dtc-@ANY_VERSION@@ARCHIVE_EXT@ \
+  debian uupdate
diff -Nru device-tree-compiler-1.4.5/Documentation/manual.txt device-tree-compiler-1.4.7/Documentation/manual.txt
--- device-tree-compiler-1.4.5/Documentation/manual.txt	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/Documentation/manual.txt	2018-07-23 03:00:50.000000000 +0000
@@ -693,3 +693,67 @@
     -i, --input         Input base DT blob
     -o, --output        Output DT blob
     -v, --verbose       Verbose message output
+
+4 ) fdtget -- Read properties from device tree
+
+This command can be used to obtain individual values from the device tree in a
+nicely formatted way. You can specify multiple nodes to display (when using -p)
+or multiple node/property pairs (when not using -p). For the latter, each
+property is displayed on its own line, with a space between each cell within
+the property.
+
+The syntax of the fdtget command is:
+
+    fdtget <options> <dt file> [<node> <property>]...
+    fdtget -p <options> <dt file> [<node> ]...
+
+where options are:
+
+    <type>    s=string, i=int, u=unsigned, x=hex
+        Optional modifier prefix:
+            hh or b=byte, h=2 byte, l=4 byte (default)
+
+    Options: -[t:pld:hV]
+    -t, --type <arg>    Type of data
+    -p, --properties    List properties for each node
+    -l, --list          List subnodes for each node
+    -d, --default <arg> Default value to display when the property is missing
+    -h, --help          Print this help and exit
+    -V, --version       Print version and exit
+
+If -t is not provided, fdtget will try to figure out the type, trying to detect
+strings, string lists and the size of each value in the property. This is
+similar to how fdtdump works, and uses the same heuristics.
+
+
+5 ) fdtput - Write properties to a device tree
+
+The syntax of the fdtput command is:
+
+    fdtput <options> <dt file> <node> <property> [<value>...]
+    fdtput -c <options> <dt file> [<node>...]
+    fdtput -r <options> <dt file> [<node>...]
+    fdtput -d <options> <dt file> <node> [<property>...]
+
+Options are:
+
+    <type>    s=string, i=int, u=unsigned, x=hex
+        Optional modifier prefix:
+            hh or b=byte, h=2 byte, l=4 byte (default)
+
+    -c, --create     Create nodes if they don't already exist
+    -r, --remove     Delete nodes (and any subnodes) if they already exist
+    -d, --delete     Delete properties if they already exist
+    -p, --auto-path  Automatically create nodes as needed for the node path
+    -t, --type <arg> Type of data
+    -v, --verbose    Display each value decoded from command line
+    -h, --help       Print this help and exit
+    -V, --version    Print version and exit
+
+The option determines which usage is selected and therefore the operation that
+is performed. The first usage adds or updates properties; the rest are used to
+create/delete nodes and delete properties.
+
+For the first usage, the command line arguments are joined together into a
+single value which is written to the property. The -t option is required so
+that fdtput knows how to decode its arguments.
diff -Nru device-tree-compiler-1.4.5/dtc.c device-tree-compiler-1.4.7/dtc.c
--- device-tree-compiler-1.4.5/dtc.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/dtc.c	2018-07-23 03:00:50.000000000 +0000
@@ -59,8 +59,6 @@
 }
 
 /* Usage related data. */
-#define FDT_VERSION(version)	_FDT_VERSION(version)
-#define _FDT_VERSION(version)	#version
 static const char usage_synopsis[] = "dtc [options] <input file>";
 static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
 static struct option const usage_long_opts[] = {
@@ -98,7 +96,7 @@
 	 "\t\tdts - device tree source text\n"
 	 "\t\tdtb - device tree blob\n"
 	 "\t\tasm - assembler source",
-	"\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
+	"\n\tBlob version to produce, defaults to "stringify(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
 	"\n\tOutput dependency file",
 	"\n\tMake space for <number> reserve map entries (for dtb and asm output)",
 	"\n\tMake the blob at least <bytes> long (extra space)",
@@ -319,13 +317,14 @@
 		dti->boot_cpuid_phys = cmdline_boot_cpuid;
 
 	fill_fullpaths(dti->dt, "");
-	process_checks(force, dti);
 
 	/* on a plugin, generate by default */
 	if (dti->dtsflags & DTSF_PLUGIN) {
 		generate_fixups = 1;
 	}
 
+	process_checks(force, dti);
+
 	if (auto_label_aliases)
 		generate_label_tree(dti, "aliases", false);
 
diff -Nru device-tree-compiler-1.4.5/dtc.h device-tree-compiler-1.4.7/dtc.h
--- device-tree-compiler-1.4.5/dtc.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/dtc.h	2018-07-23 03:00:50.000000000 +0000
@@ -1,5 +1,5 @@
-#ifndef _DTC_H
-#define _DTC_H
+#ifndef DTC_H
+#define DTC_H
 
 /*
  * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
@@ -67,16 +67,25 @@
 
 
 #define streq(a, b)	(strcmp((a), (b)) == 0)
-#define strneq(a, b, n)	(strncmp((a), (b), (n)) == 0)
+#define strstarts(s, prefix)	(strncmp((s), (prefix), strlen(prefix)) == 0)
+#define strprefixeq(a, n, b)	(strlen(b) == (n) && (memcmp(a, b, n) == 0))
 
 #define ALIGN(x, a)	(((x) + (a) - 1) & ~((a) - 1))
 
 /* Data blobs */
 enum markertype {
+	TYPE_NONE,
 	REF_PHANDLE,
 	REF_PATH,
 	LABEL,
+	TYPE_UINT8,
+	TYPE_UINT16,
+	TYPE_UINT32,
+	TYPE_UINT64,
+	TYPE_BLOB,
+	TYPE_STRING,
 };
+extern const char *markername(enum markertype markertype);
 
 struct  marker {
 	enum markertype type;
@@ -167,6 +176,8 @@
 
 	struct label *labels;
 	const struct bus_type *bus;
+
+	bool omit_if_unused, is_referenced;
 };
 
 #define for_each_label_withdel(l0, l) \
@@ -201,8 +212,11 @@
 struct node *build_node(struct property *proplist, struct node *children);
 struct node *build_node_delete(void);
 struct node *name_node(struct node *node, char *name);
+struct node *omit_node_if_unused(struct node *node);
+struct node *reference_node(struct node *node);
 struct node *chain_node(struct node *first, struct node *list);
 struct node *merge_nodes(struct node *old_node, struct node *new_node);
+struct node *add_orphan_node(struct node *old_node, struct node *new_node, char *ref);
 
 void add_property(struct node *node, struct property *prop);
 void delete_property_by_name(struct node *node, char *name);
@@ -288,4 +302,4 @@
 
 struct dt_info *dt_from_fs(const char *dirname);
 
-#endif /* _DTC_H */
+#endif /* DTC_H */
diff -Nru device-tree-compiler-1.4.5/dtc-lexer.l device-tree-compiler-1.4.7/dtc-lexer.l
--- device-tree-compiler-1.4.5/dtc-lexer.l	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/dtc-lexer.l	2018-07-23 03:00:50.000000000 +0000
@@ -153,6 +153,13 @@
 			return DT_DEL_NODE;
 		}
 
+<*>"/omit-if-no-ref/"	{
+			DPRINT("Keyword: /omit-if-no-ref/\n");
+			DPRINT("<PROPNODENAME>\n");
+			BEGIN(PROPNODENAME);
+			return DT_OMIT_NO_REF;
+		}
+
 <*>{LABEL}:	{
 			DPRINT("Label: %s\n", yytext);
 			yylval.labelref = xstrdup(yytext);
diff -Nru device-tree-compiler-1.4.5/dtc-parser.y device-tree-compiler-1.4.7/dtc-parser.y
--- device-tree-compiler-1.4.5/dtc-parser.y	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/dtc-parser.y	2018-07-23 03:00:50.000000000 +0000
@@ -63,6 +63,7 @@
 %token DT_BITS
 %token DT_DEL_PROP
 %token DT_DEL_NODE
+%token DT_OMIT_NO_REF
 %token <propnodename> DT_PROPNODENAME
 %token <integer> DT_LITERAL
 %token <integer> DT_CHAR_LITERAL
@@ -166,7 +167,17 @@
 		{
 			$$ = merge_nodes($1, $3);
 		}
-
+	| DT_REF nodedef
+		{
+			/*
+			 * We rely on the rule being always:
+			 *   versioninfo plugindecl memreserves devicetree
+			 * so $-1 is what we want (plugindecl)
+			 */
+			if (!($<flags>-1 & DTSF_PLUGIN))
+				ERROR(&@2, "Label or path %s not found", $1);
+			$$ = add_orphan_node(name_node(build_node(NULL, NULL), ""), $2, $1);
+		}
 	| devicetree DT_LABEL DT_REF nodedef
 		{
 			struct node *target = get_node_by_ref($1, $3);
@@ -180,12 +191,21 @@
 		}
 	| devicetree DT_REF nodedef
 		{
-			struct node *target = get_node_by_ref($1, $2);
+			/*
+			 * We rely on the rule being always:
+			 *   versioninfo plugindecl memreserves devicetree
+			 * so $-1 is what we want (plugindecl)
+			 */
+			if ($<flags>-1 & DTSF_PLUGIN) {
+				add_orphan_node($1, $3, $2);
+			} else {
+				struct node *target = get_node_by_ref($1, $2);
 
-			if (target)
-				merge_nodes(target, $3);
-			else
-				ERROR(&@2, "Label or path %s not found", $2);
+				if (target)
+					merge_nodes(target, $3);
+				else
+					ERROR(&@2, "Label or path %s not found", $2);
+			}
 			$$ = $1;
 		}
 	| devicetree DT_DEL_NODE DT_REF ';'
@@ -200,6 +220,18 @@
 
 			$$ = $1;
 		}
+	| devicetree DT_OMIT_NO_REF DT_REF ';'
+		{
+			struct node *target = get_node_by_ref($1, $3);
+
+			if (target)
+				omit_node_if_unused(target);
+			else
+				ERROR(&@3, "Label or path %s not found", $3);
+
+
+			$$ = $1;
+		}
 	;
 
 nodedef:
@@ -308,22 +340,27 @@
 	DT_BITS DT_LITERAL '<'
 		{
 			unsigned long long bits;
+			enum markertype type = TYPE_UINT32;
 
 			bits = $2;
 
-			if ((bits !=  8) && (bits != 16) &&
-			    (bits != 32) && (bits != 64)) {
+			switch (bits) {
+			case 8: type = TYPE_UINT8; break;
+			case 16: type = TYPE_UINT16; break;
+			case 32: type = TYPE_UINT32; break;
+			case 64: type = TYPE_UINT64; break;
+			default:
 				ERROR(&@2, "Array elements must be"
 				      " 8, 16, 32 or 64-bits");
 				bits = 32;
 			}
 
-			$$.data = empty_data;
+			$$.data = data_add_marker(empty_data, type, NULL);
 			$$.bits = bits;
 		}
 	| '<'
 		{
-			$$.data = empty_data;
+			$$.data = data_add_marker(empty_data, TYPE_UINT32, NULL);
 			$$.bits = 32;
 		}
 	| arrayprefix integer_prim
@@ -467,7 +504,7 @@
 bytestring:
 	  /* empty */
 		{
-			$$ = empty_data;
+			$$ = data_add_marker(empty_data, TYPE_UINT8, NULL);
 		}
 	| bytestring DT_BYTE
 		{
@@ -504,6 +541,10 @@
 		{
 			$$ = name_node(build_node_delete(), $2);
 		}
+	| DT_OMIT_NO_REF subnode
+		{
+			$$ = omit_node_if_unused($2);
+		}
 	| DT_LABEL subnode
 		{
 			add_label(&$2->labels, $1);
diff -Nru device-tree-compiler-1.4.5/fdtdump.c device-tree-compiler-1.4.7/fdtdump.c
--- device-tree-compiler-1.4.5/fdtdump.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/fdtdump.c	2018-07-23 03:00:50.000000000 +0000
@@ -8,6 +8,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include <inttypes.h>
 
 #include <libfdt.h>
 #include <libfdt_env.h>
@@ -65,23 +66,24 @@
 	shift = 4;
 
 	printf("/dts-v1/;\n");
-	printf("// magic:\t\t0x%x\n", fdt32_to_cpu(bph->magic));
-	printf("// totalsize:\t\t0x%x (%d)\n", totalsize, totalsize);
-	printf("// off_dt_struct:\t0x%x\n", off_dt);
-	printf("// off_dt_strings:\t0x%x\n", off_str);
-	printf("// off_mem_rsvmap:\t0x%x\n", off_mem_rsvmap);
-	printf("// version:\t\t%d\n", version);
-	printf("// last_comp_version:\t%d\n",
+	printf("// magic:\t\t0x%"PRIx32"\n", fdt32_to_cpu(bph->magic));
+	printf("// totalsize:\t\t0x%"PRIx32" (%"PRIu32")\n",
+	       totalsize, totalsize);
+	printf("// off_dt_struct:\t0x%"PRIx32"\n", off_dt);
+	printf("// off_dt_strings:\t0x%"PRIx32"\n", off_str);
+	printf("// off_mem_rsvmap:\t0x%"PRIx32"\n", off_mem_rsvmap);
+	printf("// version:\t\t%"PRIu32"\n", version);
+	printf("// last_comp_version:\t%"PRIu32"\n",
 	       fdt32_to_cpu(bph->last_comp_version));
 	if (version >= 2)
-		printf("// boot_cpuid_phys:\t0x%x\n",
+		printf("// boot_cpuid_phys:\t0x%"PRIx32"\n",
 		       fdt32_to_cpu(bph->boot_cpuid_phys));
 
 	if (version >= 3)
-		printf("// size_dt_strings:\t0x%x\n",
+		printf("// size_dt_strings:\t0x%"PRIx32"\n",
 		       fdt32_to_cpu(bph->size_dt_strings));
 	if (version >= 17)
-		printf("// size_dt_struct:\t0x%x\n",
+		printf("// size_dt_struct:\t0x%"PRIx32"\n",
 		       fdt32_to_cpu(bph->size_dt_struct));
 	printf("\n");
 
@@ -91,14 +93,14 @@
 		if (addr == 0 && size == 0)
 			break;
 
-		printf("/memreserve/ %#llx %#llx;\n",
-		       (unsigned long long)addr, (unsigned long long)size);
+		printf("/memreserve/ %#"PRIx64" %#"PRIx64";\n",
+		       addr, size);
 	}
 
 	p = p_struct;
 	while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) {
 
-		dumpf("%04zx: tag: 0x%08x (%s)\n",
+		dumpf("%04zx: tag: 0x%08"PRIx32" (%s)\n",
 		        (uintptr_t)p - blob_off - 4, tag, tagname(tag));
 
 		if (tag == FDT_BEGIN_NODE) {
@@ -127,7 +129,7 @@
 		}
 
 		if (tag != FDT_PROP) {
-			fprintf(stderr, "%*s ** Unknown tag 0x%08x\n", depth * shift, "", tag);
+			fprintf(stderr, "%*s ** Unknown tag 0x%08"PRIx32"\n", depth * shift, "", tag);
 			break;
 		}
 		sz = fdt32_to_cpu(GET_CELL(p));
@@ -181,7 +183,7 @@
 	char *buf;
 	bool debug = false;
 	bool scan = false;
-	off_t len;
+	size_t len;
 
 	fprintf(stderr, "\n"
 "**** fdtdump is a low-level debugging tool, not meant for general use.\n"
@@ -204,7 +206,7 @@
 		usage("missing input filename");
 	file = argv[optind];
 
-	buf = utilfdt_read_len(file, &len);
+	buf = utilfdt_read(file, &len);
 	if (!buf)
 		die("could not read: %s\n", file);
 
diff -Nru device-tree-compiler-1.4.5/fdtget.c device-tree-compiler-1.4.7/fdtget.c
--- device-tree-compiler-1.4.5/fdtget.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/fdtget.c	2018-07-23 03:00:50.000000000 +0000
@@ -76,7 +76,7 @@
 	for (i = 0; i < len; i += size, p += size) {
 		if (i)
 			printf(" ");
-		value = size == 4 ? fdt32_to_cpu(*(const fdt32_t *)p) :
+		value = size == 4 ? fdt32_ld((const fdt32_t *)p) :
 			size == 2 ? (*p << 8) | p[1] : *p;
 		printf(fmt, value);
 	}
@@ -140,7 +140,6 @@
  */
 static int list_properties(const void *blob, int node)
 {
-	const struct fdt_property *data;
 	const char *name;
 	int prop;
 
@@ -149,8 +148,7 @@
 		/* Stop silently when there are no more properties */
 		if (prop < 0)
 			return prop == -FDT_ERR_NOTFOUND ? 0 : prop;
-		data = fdt_get_property_by_offset(blob, prop, NULL);
-		name = fdt_string(blob, fdt32_to_cpu(data->nameoff));
+		fdt_getprop_by_offset(blob, prop, &name, NULL);
 		if (name)
 			puts(name);
 		prop = fdt_next_property_offset(blob, prop);
@@ -273,7 +271,7 @@
 	const char *prop;
 	int i, node;
 
-	blob = utilfdt_read(filename);
+	blob = utilfdt_read(filename, NULL);
 	if (!blob)
 		return -1;
 
diff -Nru device-tree-compiler-1.4.5/fdtoverlay.c device-tree-compiler-1.4.7/fdtoverlay.c
--- device-tree-compiler-1.4.5/fdtoverlay.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/fdtoverlay.c	2018-07-23 03:00:50.000000000 +0000
@@ -26,7 +26,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <alloca.h>
 #include <inttypes.h>
 
 #include <libfdt.h>
@@ -61,10 +60,10 @@
 {
 	char *blob = NULL;
 	char **ovblob = NULL;
-	off_t blob_len, ov_len, total_len;
+	size_t blob_len, ov_len, total_len;
 	int i, ret = -1;
 
-	blob = utilfdt_read_len(input_filename, &blob_len);
+	blob = utilfdt_read(input_filename, &blob_len);
 	if (!blob) {
 		fprintf(stderr, "\nFailed to read base blob %s\n",
 				input_filename);
@@ -79,13 +78,13 @@
 	ret = 0;
 
 	/* allocate blob pointer array */
-	ovblob = alloca(sizeof(*ovblob) * argc);
+	ovblob = malloc(sizeof(*ovblob) * argc);
 	memset(ovblob, 0, sizeof(*ovblob) * argc);
 
 	/* read and keep track of the overlay blobs */
 	total_len = 0;
 	for (i = 0; i < argc; i++) {
-		ovblob[i] = utilfdt_read_len(argv[i], &ov_len);
+		ovblob[i] = utilfdt_read(argv[i], &ov_len);
 		if (!ovblob[i]) {
 			fprintf(stderr, "\nFailed to read overlay %s\n",
 					argv[i]);
@@ -121,6 +120,7 @@
 			if (ovblob[i])
 				free(ovblob[i]);
 		}
+		free(ovblob);
 	}
 	free(blob);
 
diff -Nru device-tree-compiler-1.4.5/fdtput.c device-tree-compiler-1.4.7/fdtput.c
--- device-tree-compiler-1.4.5/fdtput.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/fdtput.c	2018-07-23 03:00:50.000000000 +0000
@@ -130,7 +130,7 @@
 
 #define ALIGN(x)		(((x) + (FDT_TAGSIZE) - 1) & ~((FDT_TAGSIZE) - 1))
 
-static char *_realloc_fdt(char *fdt, int delta)
+static char *realloc_fdt(char *fdt, int delta)
 {
 	int new_sz = fdt_totalsize(fdt) + delta;
 	fdt = xrealloc(fdt, new_sz);
@@ -144,7 +144,7 @@
 	/* FDT_BEGIN_NODE, node name in off_struct and FDT_END_NODE */
 	delta = sizeof(struct fdt_node_header) + ALIGN(strlen(name) + 1)
 			+ FDT_TAGSIZE;
-	return _realloc_fdt(fdt, delta);
+	return realloc_fdt(fdt, delta);
 }
 
 static char *realloc_property(char *fdt, int nodeoffset,
@@ -161,7 +161,7 @@
 		/* actual value in off_struct */
 		delta += ALIGN(newlen) - ALIGN(oldlen);
 
-	return _realloc_fdt(fdt, delta);
+	return realloc_fdt(fdt, delta);
 }
 
 static int store_key_value(char **blob, const char *node_name,
@@ -333,7 +333,7 @@
 	char *node;
 	int len, ret = 0;
 
-	blob = utilfdt_read(filename);
+	blob = utilfdt_read(filename, NULL);
 	if (!blob)
 		return -1;
 
diff -Nru device-tree-compiler-1.4.5/flattree.c device-tree-compiler-1.4.7/flattree.c
--- device-tree-compiler-1.4.5/flattree.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/flattree.c	2018-07-23 03:00:50.000000000 +0000
@@ -393,7 +393,7 @@
 			padlen = 0;
 			if (quiet < 1)
 				fprintf(stderr,
-					"Warning: blob size %d >= minimum size %d\n",
+					"Warning: blob size %"PRIu32" >= minimum size %d\n",
 					fdt32_to_cpu(fdt.totalsize), minsize);
 		}
 	}
@@ -731,7 +731,7 @@
 
 	plen = strlen(ppath);
 
-	if (!strneq(ppath, cpath, plen))
+	if (!strstarts(cpath, ppath))
 		die("Path \"%s\" is not valid as a child of \"%s\"\n",
 		    cpath, ppath);
 
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt_addresses.c device-tree-compiler-1.4.7/libfdt/fdt_addresses.c
--- device-tree-compiler-1.4.5/libfdt/fdt_addresses.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt_addresses.c	2018-07-23 03:00:50.000000000 +0000
@@ -1,6 +1,7 @@
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
+ * Copyright (C) 2018 embedded brains GmbH
  *
  * libfdt is dual licensed: you can use it either under the terms of
  * the GPL, or the BSD license, at your option.
@@ -55,42 +56,32 @@
 
 #include "libfdt_internal.h"
 
-int fdt_address_cells(const void *fdt, int nodeoffset)
+static int fdt_cells(const void *fdt, int nodeoffset, const char *name)
 {
-	const fdt32_t *ac;
+	const fdt32_t *c;
 	int val;
 	int len;
 
-	ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len);
-	if (!ac)
+	c = fdt_getprop(fdt, nodeoffset, name, &len);
+	if (!c)
 		return 2;
 
-	if (len != sizeof(*ac))
+	if (len != sizeof(*c))
 		return -FDT_ERR_BADNCELLS;
 
-	val = fdt32_to_cpu(*ac);
+	val = fdt32_to_cpu(*c);
 	if ((val <= 0) || (val > FDT_MAX_NCELLS))
 		return -FDT_ERR_BADNCELLS;
 
 	return val;
 }
 
-int fdt_size_cells(const void *fdt, int nodeoffset)
+int fdt_address_cells(const void *fdt, int nodeoffset)
 {
-	const fdt32_t *sc;
-	int val;
-	int len;
-
-	sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len);
-	if (!sc)
-		return 2;
-
-	if (len != sizeof(*sc))
-		return -FDT_ERR_BADNCELLS;
-
-	val = fdt32_to_cpu(*sc);
-	if ((val < 0) || (val > FDT_MAX_NCELLS))
-		return -FDT_ERR_BADNCELLS;
+	return fdt_cells(fdt, nodeoffset, "#address-cells");
+}
 
-	return val;
+int fdt_size_cells(const void *fdt, int nodeoffset)
+{
+	return fdt_cells(fdt, nodeoffset, "#size-cells");
 }
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt.c device-tree-compiler-1.4.7/libfdt/fdt.c
--- device-tree-compiler-1.4.5/libfdt/fdt.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt.c	2018-07-23 03:00:50.000000000 +0000
@@ -55,7 +55,12 @@
 
 #include "libfdt_internal.h"
 
-int fdt_check_header(const void *fdt)
+/*
+ * Minimal sanity check for a read-only tree. fdt_ro_probe_() checks
+ * that the given buffer contains what appears to be a flattened
+ * device tree with sane information in its header.
+ */
+int fdt_ro_probe_(const void *fdt)
 {
 	if (fdt_magic(fdt) == FDT_MAGIC) {
 		/* Complete tree */
@@ -74,6 +79,78 @@
 	return 0;
 }
 
+static int check_off_(uint32_t hdrsize, uint32_t totalsize, uint32_t off)
+{
+	return (off >= hdrsize) && (off <= totalsize);
+}
+
+static int check_block_(uint32_t hdrsize, uint32_t totalsize,
+			uint32_t base, uint32_t size)
+{
+	if (!check_off_(hdrsize, totalsize, base))
+		return 0; /* block start out of bounds */
+	if ((base + size) < base)
+		return 0; /* overflow */
+	if (!check_off_(hdrsize, totalsize, base + size))
+		return 0; /* block end out of bounds */
+	return 1;
+}
+
+size_t fdt_header_size_(uint32_t version)
+{
+	if (version <= 1)
+		return FDT_V1_SIZE;
+	else if (version <= 2)
+		return FDT_V2_SIZE;
+	else if (version <= 3)
+		return FDT_V3_SIZE;
+	else if (version <= 16)
+		return FDT_V16_SIZE;
+	else
+		return FDT_V17_SIZE;
+}
+
+int fdt_check_header(const void *fdt)
+{
+	size_t hdrsize;
+
+	if (fdt_magic(fdt) != FDT_MAGIC)
+		return -FDT_ERR_BADMAGIC;
+	hdrsize = fdt_header_size(fdt);
+	if ((fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
+	    || (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION))
+		return -FDT_ERR_BADVERSION;
+	if (fdt_version(fdt) < fdt_last_comp_version(fdt))
+		return -FDT_ERR_BADVERSION;
+
+	if ((fdt_totalsize(fdt) < hdrsize)
+	    || (fdt_totalsize(fdt) > INT_MAX))
+		return -FDT_ERR_TRUNCATED;
+
+	/* Bounds check memrsv block */
+	if (!check_off_(hdrsize, fdt_totalsize(fdt), fdt_off_mem_rsvmap(fdt)))
+		return -FDT_ERR_TRUNCATED;
+
+	/* Bounds check structure block */
+	if (fdt_version(fdt) < 17) {
+		if (!check_off_(hdrsize, fdt_totalsize(fdt),
+				fdt_off_dt_struct(fdt)))
+			return -FDT_ERR_TRUNCATED;
+	} else {
+		if (!check_block_(hdrsize, fdt_totalsize(fdt),
+				  fdt_off_dt_struct(fdt),
+				  fdt_size_dt_struct(fdt)))
+			return -FDT_ERR_TRUNCATED;
+	}
+
+	/* Bounds check strings block */
+	if (!check_block_(hdrsize, fdt_totalsize(fdt),
+			  fdt_off_dt_strings(fdt), fdt_size_dt_strings(fdt)))
+		return -FDT_ERR_TRUNCATED;
+
+	return 0;
+}
+
 const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
 {
 	unsigned absoffset = offset + fdt_off_dt_struct(fdt);
@@ -88,7 +165,7 @@
 		    || ((offset + len) > fdt_size_dt_struct(fdt)))
 			return NULL;
 
-	return _fdt_offset_ptr(fdt, offset);
+	return fdt_offset_ptr_(fdt, offset);
 }
 
 uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
@@ -123,6 +200,9 @@
 		/* skip-name offset, length and value */
 		offset += sizeof(struct fdt_property) - FDT_TAGSIZE
 			+ fdt32_to_cpu(*lenp);
+		if (fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 &&
+		    ((offset - fdt32_to_cpu(*lenp)) % 8) != 0)
+			offset += 4;
 		break;
 
 	case FDT_END:
@@ -141,7 +221,7 @@
 	return tag;
 }
 
-int _fdt_check_node_offset(const void *fdt, int offset)
+int fdt_check_node_offset_(const void *fdt, int offset)
 {
 	if ((offset < 0) || (offset % FDT_TAGSIZE)
 	    || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
@@ -150,7 +230,7 @@
 	return offset;
 }
 
-int _fdt_check_prop_offset(const void *fdt, int offset)
+int fdt_check_prop_offset_(const void *fdt, int offset)
 {
 	if ((offset < 0) || (offset % FDT_TAGSIZE)
 	    || (fdt_next_tag(fdt, offset, &offset) != FDT_PROP))
@@ -165,7 +245,7 @@
 	uint32_t tag;
 
 	if (offset >= 0)
-		if ((nextoffset = _fdt_check_node_offset(fdt, offset)) < 0)
+		if ((nextoffset = fdt_check_node_offset_(fdt, offset)) < 0)
 			return nextoffset;
 
 	do {
@@ -227,7 +307,7 @@
 	return offset;
 }
 
-const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
+const char *fdt_find_string_(const char *strtab, int tabsize, const char *s)
 {
 	int len = strlen(s) + 1;
 	const char *last = strtab + tabsize - len;
@@ -241,7 +321,7 @@
 
 int fdt_move(const void *fdt, void *buf, int bufsize)
 {
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	if (fdt_totalsize(fdt) > bufsize)
 		return -FDT_ERR_NOSPACE;
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt.h device-tree-compiler-1.4.7/libfdt/fdt.h
--- device-tree-compiler-1.4.5/libfdt/fdt.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt.h	2018-07-23 03:00:50.000000000 +0000
@@ -1,5 +1,5 @@
-#ifndef _FDT_H
-#define _FDT_H
+#ifndef FDT_H
+#define FDT_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -108,4 +108,4 @@
 #define FDT_V16_SIZE	FDT_V3_SIZE
 #define FDT_V17_SIZE	(FDT_V16_SIZE + sizeof(fdt32_t))
 
-#endif /* _FDT_H */
+#endif /* FDT_H */
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt_overlay.c device-tree-compiler-1.4.7/libfdt/fdt_overlay.c
--- device-tree-compiler-1.4.5/libfdt/fdt_overlay.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt_overlay.c	2018-07-23 03:00:50.000000000 +0000
@@ -1,3 +1,54 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2016 Free Electrons
+ * Copyright (C) 2016 NextThing Co.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ *  a) This library is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This library is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public
+ *     License along with this library; if not, write to the Free
+ *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ *     MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ *  b) Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *     2. Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
 #include "libfdt_env.h"
 
 #include <fdt.h>
@@ -646,7 +697,7 @@
 	int len = 0, namelen;
 	const char *name;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	for (;;) {
 		name = fdt_get_name(fdt, nodeoffset, &namelen);
@@ -815,8 +866,8 @@
 	uint32_t delta = fdt_get_max_phandle(fdt);
 	int ret;
 
-	FDT_CHECK_HEADER(fdt);
-	FDT_CHECK_HEADER(fdto);
+	FDT_RO_PROBE(fdt);
+	FDT_RO_PROBE(fdto);
 
 	ret = overlay_adjust_local_phandles(fdto, delta);
 	if (ret)
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt_ro.c device-tree-compiler-1.4.7/libfdt/fdt_ro.c
--- device-tree-compiler-1.4.5/libfdt/fdt_ro.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt_ro.c	2018-07-23 03:00:50.000000000 +0000
@@ -55,12 +55,13 @@
 
 #include "libfdt_internal.h"
 
-static int _fdt_nodename_eq(const void *fdt, int offset,
+static int fdt_nodename_eq_(const void *fdt, int offset,
 			    const char *s, int len)
 {
-	const char *p = fdt_offset_ptr(fdt, offset + FDT_TAGSIZE, len+1);
+	int olen;
+	const char *p = fdt_get_name(fdt, offset, &olen);
 
-	if (!p)
+	if (!p || olen < len)
 		/* short match */
 		return 0;
 
@@ -75,17 +76,72 @@
 		return 0;
 }
 
+const char *fdt_get_string(const void *fdt, int stroffset, int *lenp)
+{
+	uint32_t absoffset = stroffset + fdt_off_dt_strings(fdt);
+	size_t len;
+	int err;
+	const char *s, *n;
+
+	err = fdt_ro_probe_(fdt);
+	if (err != 0)
+		goto fail;
+
+	err = -FDT_ERR_BADOFFSET;
+	if (absoffset >= fdt_totalsize(fdt))
+		goto fail;
+	len = fdt_totalsize(fdt) - absoffset;
+
+	if (fdt_magic(fdt) == FDT_MAGIC) {
+		if (stroffset < 0)
+			goto fail;
+		if (fdt_version(fdt) >= 17) {
+			if (stroffset >= fdt_size_dt_strings(fdt))
+				goto fail;
+			if ((fdt_size_dt_strings(fdt) - stroffset) < len)
+				len = fdt_size_dt_strings(fdt) - stroffset;
+		}
+	} else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
+		if ((stroffset >= 0)
+		    || (stroffset < -fdt_size_dt_strings(fdt)))
+			goto fail;
+		if ((-stroffset) < len)
+			len = -stroffset;
+	} else {
+		err = -FDT_ERR_INTERNAL;
+		goto fail;
+	}
+
+	s = (const char *)fdt + absoffset;
+	n = memchr(s, '\0', len);
+	if (!n) {
+		/* missing terminating NULL */
+		err = -FDT_ERR_TRUNCATED;
+		goto fail;
+	}
+
+	if (lenp)
+		*lenp = n - s;
+	return s;
+
+fail:
+	if (lenp)
+		*lenp = err;
+	return NULL;
+}
+
 const char *fdt_string(const void *fdt, int stroffset)
 {
-	return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
+	return fdt_get_string(fdt, stroffset, NULL);
 }
 
-static int _fdt_string_eq(const void *fdt, int stroffset,
+static int fdt_string_eq_(const void *fdt, int stroffset,
 			  const char *s, int len)
 {
-	const char *p = fdt_string(fdt, stroffset);
+	int slen;
+	const char *p = fdt_get_string(fdt, stroffset, &slen);
 
-	return (strlen(p) == len) && (memcmp(p, s, len) == 0);
+	return p && (slen == len) && (memcmp(p, s, len) == 0);
 }
 
 uint32_t fdt_get_max_phandle(const void *fdt)
@@ -114,24 +170,45 @@
 	return 0;
 }
 
+static const struct fdt_reserve_entry *fdt_mem_rsv(const void *fdt, int n)
+{
+	int offset = n * sizeof(struct fdt_reserve_entry);
+	int absoffset = fdt_off_mem_rsvmap(fdt) + offset;
+
+	if (absoffset < fdt_off_mem_rsvmap(fdt))
+		return NULL;
+	if (absoffset > fdt_totalsize(fdt) - sizeof(struct fdt_reserve_entry))
+		return NULL;
+	return fdt_mem_rsv_(fdt, n);
+}
+
 int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
 {
-	FDT_CHECK_HEADER(fdt);
-	*address = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->address);
-	*size = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->size);
+	const struct fdt_reserve_entry *re;
+
+	FDT_RO_PROBE(fdt);
+	re = fdt_mem_rsv(fdt, n);
+	if (!re)
+		return -FDT_ERR_BADOFFSET;
+
+	*address = fdt64_ld(&re->address);
+	*size = fdt64_ld(&re->size);
 	return 0;
 }
 
 int fdt_num_mem_rsv(const void *fdt)
 {
-	int i = 0;
+	int i;
+	const struct fdt_reserve_entry *re;
 
-	while (fdt64_to_cpu(_fdt_mem_rsv(fdt, i)->size) != 0)
-		i++;
-	return i;
+	for (i = 0; (re = fdt_mem_rsv(fdt, i)) != NULL; i++) {
+		if (fdt64_ld(&re->size) == 0)
+			return i;
+	}
+	return -FDT_ERR_TRUNCATED;
 }
 
-static int _nextprop(const void *fdt, int offset)
+static int nextprop_(const void *fdt, int offset)
 {
 	uint32_t tag;
 	int nextoffset;
@@ -160,13 +237,13 @@
 {
 	int depth;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	for (depth = 0;
 	     (offset >= 0) && (depth >= 0);
 	     offset = fdt_next_node(fdt, offset, &depth))
 		if ((depth == 1)
-		    && _fdt_nodename_eq(fdt, offset, name, namelen))
+		    && fdt_nodename_eq_(fdt, offset, name, namelen))
 			return offset;
 
 	if (depth < 0)
@@ -186,7 +263,7 @@
 	const char *p = path;
 	int offset = 0;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	/* see if we have an alias */
 	if (*path != '/') {
@@ -232,17 +309,35 @@
 
 const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
 {
-	const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);
+	const struct fdt_node_header *nh = fdt_offset_ptr_(fdt, nodeoffset);
+	const char *nameptr;
 	int err;
 
-	if (((err = fdt_check_header(fdt)) != 0)
-	    || ((err = _fdt_check_node_offset(fdt, nodeoffset)) < 0))
+	if (((err = fdt_ro_probe_(fdt)) != 0)
+	    || ((err = fdt_check_node_offset_(fdt, nodeoffset)) < 0))
 			goto fail;
 
+	nameptr = nh->name;
+
+	if (fdt_version(fdt) < 0x10) {
+		/*
+		 * For old FDT versions, match the naming conventions of V16:
+		 * give only the leaf name (after all /). The actual tree
+		 * contents are loosely checked.
+		 */
+		const char *leaf;
+		leaf = strrchr(nameptr, '/');
+		if (leaf == NULL) {
+			err = -FDT_ERR_BADSTRUCTURE;
+			goto fail;
+		}
+		nameptr = leaf+1;
+	}
+
 	if (len)
-		*len = strlen(nh->name);
+		*len = strlen(nameptr);
 
-	return nh->name;
+	return nameptr;
 
  fail:
 	if (len)
@@ -254,58 +349,79 @@
 {
 	int offset;
 
-	if ((offset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
+	if ((offset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
 		return offset;
 
-	return _nextprop(fdt, offset);
+	return nextprop_(fdt, offset);
 }
 
 int fdt_next_property_offset(const void *fdt, int offset)
 {
-	if ((offset = _fdt_check_prop_offset(fdt, offset)) < 0)
+	if ((offset = fdt_check_prop_offset_(fdt, offset)) < 0)
 		return offset;
 
-	return _nextprop(fdt, offset);
+	return nextprop_(fdt, offset);
 }
 
-const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
-						      int offset,
-						      int *lenp)
+static const struct fdt_property *fdt_get_property_by_offset_(const void *fdt,
+						              int offset,
+						              int *lenp)
 {
 	int err;
 	const struct fdt_property *prop;
 
-	if ((err = _fdt_check_prop_offset(fdt, offset)) < 0) {
+	if ((err = fdt_check_prop_offset_(fdt, offset)) < 0) {
 		if (lenp)
 			*lenp = err;
 		return NULL;
 	}
 
-	prop = _fdt_offset_ptr(fdt, offset);
+	prop = fdt_offset_ptr_(fdt, offset);
 
 	if (lenp)
-		*lenp = fdt32_to_cpu(prop->len);
+		*lenp = fdt32_ld(&prop->len);
 
 	return prop;
 }
 
-const struct fdt_property *fdt_get_property_namelen(const void *fdt,
-						    int offset,
-						    const char *name,
-						    int namelen, int *lenp)
+const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
+						      int offset,
+						      int *lenp)
+{
+	/* Prior to version 16, properties may need realignment
+	 * and this API does not work. fdt_getprop_*() will, however. */
+
+	if (fdt_version(fdt) < 0x10) {
+		if (lenp)
+			*lenp = -FDT_ERR_BADVERSION;
+		return NULL;
+	}
+
+	return fdt_get_property_by_offset_(fdt, offset, lenp);
+}
+
+static const struct fdt_property *fdt_get_property_namelen_(const void *fdt,
+						            int offset,
+						            const char *name,
+						            int namelen,
+							    int *lenp,
+							    int *poffset)
 {
 	for (offset = fdt_first_property_offset(fdt, offset);
 	     (offset >= 0);
 	     (offset = fdt_next_property_offset(fdt, offset))) {
 		const struct fdt_property *prop;
 
-		if (!(prop = fdt_get_property_by_offset(fdt, offset, lenp))) {
+		if (!(prop = fdt_get_property_by_offset_(fdt, offset, lenp))) {
 			offset = -FDT_ERR_INTERNAL;
 			break;
 		}
-		if (_fdt_string_eq(fdt, fdt32_to_cpu(prop->nameoff),
-				   name, namelen))
+		if (fdt_string_eq_(fdt, fdt32_ld(&prop->nameoff),
+				   name, namelen)) {
+			if (poffset)
+				*poffset = offset;
 			return prop;
+		}
 	}
 
 	if (lenp)
@@ -313,6 +429,25 @@
 	return NULL;
 }
 
+
+const struct fdt_property *fdt_get_property_namelen(const void *fdt,
+						    int offset,
+						    const char *name,
+						    int namelen, int *lenp)
+{
+	/* Prior to version 16, properties may need realignment
+	 * and this API does not work. fdt_getprop_*() will, however. */
+	if (fdt_version(fdt) < 0x10) {
+		if (lenp)
+			*lenp = -FDT_ERR_BADVERSION;
+		return NULL;
+	}
+
+	return fdt_get_property_namelen_(fdt, offset, name, namelen, lenp,
+					 NULL);
+}
+
+
 const struct fdt_property *fdt_get_property(const void *fdt,
 					    int nodeoffset,
 					    const char *name, int *lenp)
@@ -324,12 +459,18 @@
 const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
 				const char *name, int namelen, int *lenp)
 {
+	int poffset;
 	const struct fdt_property *prop;
 
-	prop = fdt_get_property_namelen(fdt, nodeoffset, name, namelen, lenp);
+	prop = fdt_get_property_namelen_(fdt, nodeoffset, name, namelen, lenp,
+					 &poffset);
 	if (!prop)
 		return NULL;
 
+	/* Handle realignment */
+	if (fdt_version(fdt) < 0x10 && (poffset + sizeof(*prop)) % 8 &&
+	    fdt32_ld(&prop->len) >= 8)
+		return prop->data + 4;
 	return prop->data;
 }
 
@@ -338,11 +479,26 @@
 {
 	const struct fdt_property *prop;
 
-	prop = fdt_get_property_by_offset(fdt, offset, lenp);
+	prop = fdt_get_property_by_offset_(fdt, offset, lenp);
 	if (!prop)
 		return NULL;
-	if (namep)
-		*namep = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
+	if (namep) {
+		const char *name;
+		int namelen;
+		name = fdt_get_string(fdt, fdt32_ld(&prop->nameoff),
+				      &namelen);
+		if (!name) {
+			if (lenp)
+				*lenp = namelen;
+			return NULL;
+		}
+		*namep = name;
+	}
+
+	/* Handle realignment */
+	if (fdt_version(fdt) < 0x10 && (offset + sizeof(*prop)) % 8 &&
+	    fdt32_ld(&prop->len) >= 8)
+		return prop->data + 4;
 	return prop->data;
 }
 
@@ -366,7 +522,7 @@
 			return 0;
 	}
 
-	return fdt32_to_cpu(*php);
+	return fdt32_ld(php);
 }
 
 const char *fdt_get_alias_namelen(const void *fdt,
@@ -392,7 +548,7 @@
 	int offset, depth, namelen;
 	const char *name;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	if (buflen < 2)
 		return -FDT_ERR_NOSPACE;
@@ -444,7 +600,7 @@
 	int offset, depth;
 	int supernodeoffset = -FDT_ERR_INTERNAL;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	if (supernodedepth < 0)
 		return -FDT_ERR_NOTFOUND;
@@ -503,7 +659,7 @@
 	const void *val;
 	int len;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	/* FIXME: The algorithm here is pretty horrible: we scan each
 	 * property of a node in fdt_getprop(), then if that didn't
@@ -529,7 +685,7 @@
 	if ((phandle == 0) || (phandle == -1))
 		return -FDT_ERR_BADPHANDLE;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	/* FIXME: The algorithm here is pretty horrible: we
 	 * potentially scan each property of a node in
@@ -682,7 +838,7 @@
 {
 	int offset, err;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	/* FIXME: The algorithm here is pretty horrible: we scan each
 	 * property of a node in fdt_node_check_compatible(), then if
@@ -701,3 +857,66 @@
 
 	return offset; /* error from fdt_next_node() */
 }
+
+int fdt_check_full(const void *fdt, size_t bufsize)
+{
+	int err;
+	int num_memrsv;
+	int offset, nextoffset = 0;
+	uint32_t tag;
+	unsigned depth = 0;
+	const void *prop;
+	const char *propname;
+
+	if (bufsize < FDT_V1_SIZE)
+		return -FDT_ERR_TRUNCATED;
+	err = fdt_check_header(fdt);
+	if (err != 0)
+		return err;
+	if (bufsize < fdt_totalsize(fdt))
+		return -FDT_ERR_TRUNCATED;
+
+	num_memrsv = fdt_num_mem_rsv(fdt);
+	if (num_memrsv < 0)
+		return num_memrsv;
+
+	while (1) {
+		offset = nextoffset;
+		tag = fdt_next_tag(fdt, offset, &nextoffset);
+
+		if (nextoffset < 0)
+			return nextoffset;
+
+		switch (tag) {
+		case FDT_NOP:
+			break;
+
+		case FDT_END:
+			if (depth != 0)
+				return -FDT_ERR_BADSTRUCTURE;
+			return 0;
+
+		case FDT_BEGIN_NODE:
+			depth++;
+			if (depth > INT_MAX)
+				return -FDT_ERR_BADSTRUCTURE;
+			break;
+
+		case FDT_END_NODE:
+			if (depth == 0)
+				return -FDT_ERR_BADSTRUCTURE;
+			depth--;
+			break;
+
+		case FDT_PROP:
+			prop = fdt_getprop_by_offset(fdt, offset, &propname,
+						     &err);
+			if (!prop)
+				return err;
+			break;
+
+		default:
+			return -FDT_ERR_INTERNAL;
+		}
+	}
+}
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt_rw.c device-tree-compiler-1.4.7/libfdt/fdt_rw.c
--- device-tree-compiler-1.4.5/libfdt/fdt_rw.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt_rw.c	2018-07-23 03:00:50.000000000 +0000
@@ -55,8 +55,8 @@
 
 #include "libfdt_internal.h"
 
-static int _fdt_blocks_misordered(const void *fdt,
-			      int mem_rsv_size, int struct_size)
+static int fdt_blocks_misordered_(const void *fdt,
+				  int mem_rsv_size, int struct_size)
 {
 	return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))
 		|| (fdt_off_dt_struct(fdt) <
@@ -67,13 +67,13 @@
 		    (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
 }
 
-static int _fdt_rw_check_header(void *fdt)
+static int fdt_rw_probe_(void *fdt)
 {
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	if (fdt_version(fdt) < 17)
 		return -FDT_ERR_BADVERSION;
-	if (_fdt_blocks_misordered(fdt, sizeof(struct fdt_reserve_entry),
+	if (fdt_blocks_misordered_(fdt, sizeof(struct fdt_reserve_entry),
 				   fdt_size_dt_struct(fdt)))
 		return -FDT_ERR_BADLAYOUT;
 	if (fdt_version(fdt) > 17)
@@ -82,22 +82,22 @@
 	return 0;
 }
 
-#define FDT_RW_CHECK_HEADER(fdt) \
+#define FDT_RW_PROBE(fdt) \
 	{ \
-		int __err; \
-		if ((__err = _fdt_rw_check_header(fdt)) != 0) \
-			return __err; \
+		int err_; \
+		if ((err_ = fdt_rw_probe_(fdt)) != 0) \
+			return err_; \
 	}
 
-static inline int _fdt_data_size(void *fdt)
+static inline int fdt_data_size_(void *fdt)
 {
 	return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
 }
 
-static int _fdt_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
+static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen)
 {
 	char *p = splicepoint;
-	char *end = (char *)fdt + _fdt_data_size(fdt);
+	char *end = (char *)fdt + fdt_data_size_(fdt);
 
 	if (((p + oldlen) < p) || ((p + oldlen) > end))
 		return -FDT_ERR_BADOFFSET;
@@ -109,12 +109,12 @@
 	return 0;
 }
 
-static int _fdt_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
+static int fdt_splice_mem_rsv_(void *fdt, struct fdt_reserve_entry *p,
 			       int oldn, int newn)
 {
 	int delta = (newn - oldn) * sizeof(*p);
 	int err;
-	err = _fdt_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
+	err = fdt_splice_(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
 	if (err)
 		return err;
 	fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
@@ -122,13 +122,13 @@
 	return 0;
 }
 
-static int _fdt_splice_struct(void *fdt, void *p,
+static int fdt_splice_struct_(void *fdt, void *p,
 			      int oldlen, int newlen)
 {
 	int delta = newlen - oldlen;
 	int err;
 
-	if ((err = _fdt_splice(fdt, p, oldlen, newlen)))
+	if ((err = fdt_splice_(fdt, p, oldlen, newlen)))
 		return err;
 
 	fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
@@ -136,20 +136,20 @@
 	return 0;
 }
 
-static int _fdt_splice_string(void *fdt, int newlen)
+static int fdt_splice_string_(void *fdt, int newlen)
 {
 	void *p = (char *)fdt
 		+ fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
 	int err;
 
-	if ((err = _fdt_splice(fdt, p, 0, newlen)))
+	if ((err = fdt_splice_(fdt, p, 0, newlen)))
 		return err;
 
 	fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
 	return 0;
 }
 
-static int _fdt_find_add_string(void *fdt, const char *s)
+static int fdt_find_add_string_(void *fdt, const char *s)
 {
 	char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
 	const char *p;
@@ -157,13 +157,13 @@
 	int len = strlen(s) + 1;
 	int err;
 
-	p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s);
+	p = fdt_find_string_(strtab, fdt_size_dt_strings(fdt), s);
 	if (p)
 		/* found it */
 		return (p - strtab);
 
 	new = strtab + fdt_size_dt_strings(fdt);
-	err = _fdt_splice_string(fdt, len);
+	err = fdt_splice_string_(fdt, len);
 	if (err)
 		return err;
 
@@ -176,10 +176,10 @@
 	struct fdt_reserve_entry *re;
 	int err;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
-	re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt));
-	err = _fdt_splice_mem_rsv(fdt, re, 0, 1);
+	re = fdt_mem_rsv_w_(fdt, fdt_num_mem_rsv(fdt));
+	err = fdt_splice_mem_rsv_(fdt, re, 0, 1);
 	if (err)
 		return err;
 
@@ -190,17 +190,17 @@
 
 int fdt_del_mem_rsv(void *fdt, int n)
 {
-	struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
+	struct fdt_reserve_entry *re = fdt_mem_rsv_w_(fdt, n);
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
 	if (n >= fdt_num_mem_rsv(fdt))
 		return -FDT_ERR_NOTFOUND;
 
-	return _fdt_splice_mem_rsv(fdt, re, 1, 0);
+	return fdt_splice_mem_rsv_(fdt, re, 1, 0);
 }
 
-static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
+static int fdt_resize_property_(void *fdt, int nodeoffset, const char *name,
 				int len, struct fdt_property **prop)
 {
 	int oldlen;
@@ -210,7 +210,7 @@
 	if (!*prop)
 		return oldlen;
 
-	if ((err = _fdt_splice_struct(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
+	if ((err = fdt_splice_struct_(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
 				      FDT_TAGALIGN(len))))
 		return err;
 
@@ -218,7 +218,7 @@
 	return 0;
 }
 
-static int _fdt_add_property(void *fdt, int nodeoffset, const char *name,
+static int fdt_add_property_(void *fdt, int nodeoffset, const char *name,
 			     int len, struct fdt_property **prop)
 {
 	int proplen;
@@ -226,17 +226,17 @@
 	int namestroff;
 	int err;
 
-	if ((nextoffset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
+	if ((nextoffset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
 		return nextoffset;
 
-	namestroff = _fdt_find_add_string(fdt, name);
+	namestroff = fdt_find_add_string_(fdt, name);
 	if (namestroff < 0)
 		return namestroff;
 
-	*prop = _fdt_offset_ptr_w(fdt, nextoffset);
+	*prop = fdt_offset_ptr_w_(fdt, nextoffset);
 	proplen = sizeof(**prop) + FDT_TAGALIGN(len);
 
-	err = _fdt_splice_struct(fdt, *prop, 0, proplen);
+	err = fdt_splice_struct_(fdt, *prop, 0, proplen);
 	if (err)
 		return err;
 
@@ -252,7 +252,7 @@
 	int oldlen, newlen;
 	int err;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
 	namep = (char *)(uintptr_t)fdt_get_name(fdt, nodeoffset, &oldlen);
 	if (!namep)
@@ -260,7 +260,7 @@
 
 	newlen = strlen(name);
 
-	err = _fdt_splice_struct(fdt, namep, FDT_TAGALIGN(oldlen+1),
+	err = fdt_splice_struct_(fdt, namep, FDT_TAGALIGN(oldlen+1),
 				 FDT_TAGALIGN(newlen+1));
 	if (err)
 		return err;
@@ -275,11 +275,11 @@
 	struct fdt_property *prop;
 	int err;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
-	err = _fdt_resize_property(fdt, nodeoffset, name, len, &prop);
+	err = fdt_resize_property_(fdt, nodeoffset, name, len, &prop);
 	if (err == -FDT_ERR_NOTFOUND)
-		err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
+		err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
 	if (err)
 		return err;
 
@@ -308,12 +308,12 @@
 	struct fdt_property *prop;
 	int err, oldlen, newlen;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
 	prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
 	if (prop) {
 		newlen = len + oldlen;
-		err = _fdt_splice_struct(fdt, prop->data,
+		err = fdt_splice_struct_(fdt, prop->data,
 					 FDT_TAGALIGN(oldlen),
 					 FDT_TAGALIGN(newlen));
 		if (err)
@@ -321,7 +321,7 @@
 		prop->len = cpu_to_fdt32(newlen);
 		memcpy(prop->data + oldlen, val, len);
 	} else {
-		err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
+		err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
 		if (err)
 			return err;
 		memcpy(prop->data, val, len);
@@ -334,14 +334,14 @@
 	struct fdt_property *prop;
 	int len, proplen;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
 	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
 	if (!prop)
 		return len;
 
 	proplen = sizeof(*prop) + FDT_TAGALIGN(len);
-	return _fdt_splice_struct(fdt, prop, proplen, 0);
+	return fdt_splice_struct_(fdt, prop, proplen, 0);
 }
 
 int fdt_add_subnode_namelen(void *fdt, int parentoffset,
@@ -354,7 +354,7 @@
 	uint32_t tag;
 	fdt32_t *endtag;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
 	offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen);
 	if (offset >= 0)
@@ -369,10 +369,10 @@
 		tag = fdt_next_tag(fdt, offset, &nextoffset);
 	} while ((tag == FDT_PROP) || (tag == FDT_NOP));
 
-	nh = _fdt_offset_ptr_w(fdt, offset);
+	nh = fdt_offset_ptr_w_(fdt, offset);
 	nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen+1) + FDT_TAGSIZE;
 
-	err = _fdt_splice_struct(fdt, nh, 0, nodelen);
+	err = fdt_splice_struct_(fdt, nh, 0, nodelen);
 	if (err)
 		return err;
 
@@ -394,17 +394,17 @@
 {
 	int endoffset;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
-	endoffset = _fdt_node_end_offset(fdt, nodeoffset);
+	endoffset = fdt_node_end_offset_(fdt, nodeoffset);
 	if (endoffset < 0)
 		return endoffset;
 
-	return _fdt_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset),
+	return fdt_splice_struct_(fdt, fdt_offset_ptr_w_(fdt, nodeoffset),
 				  endoffset - nodeoffset, 0);
 }
 
-static void _fdt_packblocks(const char *old, char *new,
+static void fdt_packblocks_(const char *old, char *new,
 			    int mem_rsv_size, int struct_size)
 {
 	int mem_rsv_off, struct_off, strings_off;
@@ -435,7 +435,7 @@
 	const char *fdtend = fdtstart + fdt_totalsize(fdt);
 	char *tmp;
 
-	FDT_CHECK_HEADER(fdt);
+	FDT_RO_PROBE(fdt);
 
 	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
 		* sizeof(struct fdt_reserve_entry);
@@ -450,7 +450,7 @@
 			return struct_size;
 	}
 
-	if (!_fdt_blocks_misordered(fdt, mem_rsv_size, struct_size)) {
+	if (!fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) {
 		/* no further work necessary */
 		err = fdt_move(fdt, buf, bufsize);
 		if (err)
@@ -478,7 +478,7 @@
 			return -FDT_ERR_NOSPACE;
 	}
 
-	_fdt_packblocks(fdt, tmp, mem_rsv_size, struct_size);
+	fdt_packblocks_(fdt, tmp, mem_rsv_size, struct_size);
 	memmove(buf, tmp, newsize);
 
 	fdt_set_magic(buf, FDT_MAGIC);
@@ -494,12 +494,12 @@
 {
 	int mem_rsv_size;
 
-	FDT_RW_CHECK_HEADER(fdt);
+	FDT_RW_PROBE(fdt);
 
 	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
 		* sizeof(struct fdt_reserve_entry);
-	_fdt_packblocks(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
-	fdt_set_totalsize(fdt, _fdt_data_size(fdt));
+	fdt_packblocks_(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
+	fdt_set_totalsize(fdt, fdt_data_size_(fdt));
 
 	return 0;
 }
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt_sw.c device-tree-compiler-1.4.7/libfdt/fdt_sw.c
--- device-tree-compiler-1.4.5/libfdt/fdt_sw.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt_sw.c	2018-07-23 03:00:50.000000000 +0000
@@ -55,22 +55,78 @@
 
 #include "libfdt_internal.h"
 
-static int _fdt_sw_check_header(void *fdt)
+static int fdt_sw_probe_(void *fdt)
 {
-	if (fdt_magic(fdt) != FDT_SW_MAGIC)
+	if (fdt_magic(fdt) == FDT_MAGIC)
+		return -FDT_ERR_BADSTATE;
+	else if (fdt_magic(fdt) != FDT_SW_MAGIC)
 		return -FDT_ERR_BADMAGIC;
-	/* FIXME: should check more details about the header state */
 	return 0;
 }
 
-#define FDT_SW_CHECK_HEADER(fdt) \
+#define FDT_SW_PROBE(fdt) \
+	{ \
+		int err; \
+		if ((err = fdt_sw_probe_(fdt)) != 0) \
+			return err; \
+	}
+
+/* 'memrsv' state:	Initial state after fdt_create()
+ *
+ * Allowed functions:
+ *	fdt_add_reservmap_entry()
+ *	fdt_finish_reservemap()		[moves to 'struct' state]
+ */
+static int fdt_sw_probe_memrsv_(void *fdt)
+{
+	int err = fdt_sw_probe_(fdt);
+	if (err)
+		return err;
+
+	if (fdt_off_dt_strings(fdt) != 0)
+		return -FDT_ERR_BADSTATE;
+	return 0;
+}
+
+#define FDT_SW_PROBE_MEMRSV(fdt) \
+	{ \
+		int err; \
+		if ((err = fdt_sw_probe_memrsv_(fdt)) != 0) \
+			return err; \
+	}
+
+/* 'struct' state:	Enter this state after fdt_finish_reservemap()
+ *
+ * Allowed functions:
+ *	fdt_begin_node()
+ *	fdt_end_node()
+ *	fdt_property*()
+ *	fdt_finish()			[moves to 'complete' state]
+ */
+static int fdt_sw_probe_struct_(void *fdt)
+{
+	int err = fdt_sw_probe_(fdt);
+	if (err)
+		return err;
+
+	if (fdt_off_dt_strings(fdt) != fdt_totalsize(fdt))
+		return -FDT_ERR_BADSTATE;
+	return 0;
+}
+
+#define FDT_SW_PROBE_STRUCT(fdt) \
 	{ \
 		int err; \
-		if ((err = _fdt_sw_check_header(fdt)) != 0) \
+		if ((err = fdt_sw_probe_struct_(fdt)) != 0) \
 			return err; \
 	}
 
-static void *_fdt_grab_space(void *fdt, size_t len)
+/* 'complete' state:	Enter this state after fdt_finish()
+ *
+ * Allowed functions: none
+ */
+
+static void *fdt_grab_space_(void *fdt, size_t len)
 {
 	int offset = fdt_size_dt_struct(fdt);
 	int spaceleft;
@@ -82,14 +138,16 @@
 		return NULL;
 
 	fdt_set_size_dt_struct(fdt, offset + len);
-	return _fdt_offset_ptr_w(fdt, offset);
+	return fdt_offset_ptr_w_(fdt, offset);
 }
 
 int fdt_create(void *buf, int bufsize)
 {
+	const size_t hdrsize = FDT_ALIGN(sizeof(struct fdt_header),
+					 sizeof(struct fdt_reserve_entry));
 	void *fdt = buf;
 
-	if (bufsize < sizeof(struct fdt_header))
+	if (bufsize < hdrsize)
 		return -FDT_ERR_NOSPACE;
 
 	memset(buf, 0, bufsize);
@@ -99,10 +157,9 @@
 	fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION);
 	fdt_set_totalsize(fdt,  bufsize);
 
-	fdt_set_off_mem_rsvmap(fdt, FDT_ALIGN(sizeof(struct fdt_header),
-					      sizeof(struct fdt_reserve_entry)));
+	fdt_set_off_mem_rsvmap(fdt, hdrsize);
 	fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt));
-	fdt_set_off_dt_strings(fdt, bufsize);
+	fdt_set_off_dt_strings(fdt, 0);
 
 	return 0;
 }
@@ -112,11 +169,14 @@
 	size_t headsize, tailsize;
 	char *oldtail, *newtail;
 
-	FDT_SW_CHECK_HEADER(fdt);
+	FDT_SW_PROBE(fdt);
 
-	headsize = fdt_off_dt_struct(fdt);
+	headsize = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
 	tailsize = fdt_size_dt_strings(fdt);
 
+	if ((headsize + tailsize) > fdt_totalsize(fdt))
+		return -FDT_ERR_INTERNAL;
+
 	if ((headsize + tailsize) > bufsize)
 		return -FDT_ERR_NOSPACE;
 
@@ -133,8 +193,9 @@
 		memmove(buf, fdt, headsize);
 	}
 
-	fdt_set_off_dt_strings(buf, bufsize);
 	fdt_set_totalsize(buf, bufsize);
+	if (fdt_off_dt_strings(buf))
+		fdt_set_off_dt_strings(buf, bufsize);
 
 	return 0;
 }
@@ -144,10 +205,7 @@
 	struct fdt_reserve_entry *re;
 	int offset;
 
-	FDT_SW_CHECK_HEADER(fdt);
-
-	if (fdt_size_dt_struct(fdt))
-		return -FDT_ERR_BADSTATE;
+	FDT_SW_PROBE_MEMRSV(fdt);
 
 	offset = fdt_off_dt_struct(fdt);
 	if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
@@ -164,17 +222,24 @@
 
 int fdt_finish_reservemap(void *fdt)
 {
-	return fdt_add_reservemap_entry(fdt, 0, 0);
+	int err = fdt_add_reservemap_entry(fdt, 0, 0);
+
+	if (err)
+		return err;
+
+	fdt_set_off_dt_strings(fdt, fdt_totalsize(fdt));
+	return 0;
 }
 
 int fdt_begin_node(void *fdt, const char *name)
 {
 	struct fdt_node_header *nh;
-	int namelen = strlen(name) + 1;
+	int namelen;
 
-	FDT_SW_CHECK_HEADER(fdt);
+	FDT_SW_PROBE_STRUCT(fdt);
 
-	nh = _fdt_grab_space(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
+	namelen = strlen(name) + 1;
+	nh = fdt_grab_space_(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
 	if (! nh)
 		return -FDT_ERR_NOSPACE;
 
@@ -187,9 +252,9 @@
 {
 	fdt32_t *en;
 
-	FDT_SW_CHECK_HEADER(fdt);
+	FDT_SW_PROBE_STRUCT(fdt);
 
-	en = _fdt_grab_space(fdt, FDT_TAGSIZE);
+	en = fdt_grab_space_(fdt, FDT_TAGSIZE);
 	if (! en)
 		return -FDT_ERR_NOSPACE;
 
@@ -197,7 +262,7 @@
 	return 0;
 }
 
-static int _fdt_find_add_string(void *fdt, const char *s)
+static int fdt_find_add_string_(void *fdt, const char *s)
 {
 	char *strtab = (char *)fdt + fdt_totalsize(fdt);
 	const char *p;
@@ -205,7 +270,7 @@
 	int len = strlen(s) + 1;
 	int struct_top, offset;
 
-	p = _fdt_find_string(strtab - strtabsize, strtabsize, s);
+	p = fdt_find_string_(strtab - strtabsize, strtabsize, s);
 	if (p)
 		return p - strtab;
 
@@ -225,13 +290,13 @@
 	struct fdt_property *prop;
 	int nameoff;
 
-	FDT_SW_CHECK_HEADER(fdt);
+	FDT_SW_PROBE_STRUCT(fdt);
 
-	nameoff = _fdt_find_add_string(fdt, name);
+	nameoff = fdt_find_add_string_(fdt, name);
 	if (nameoff == 0)
 		return -FDT_ERR_NOSPACE;
 
-	prop = _fdt_grab_space(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
+	prop = fdt_grab_space_(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
 	if (! prop)
 		return -FDT_ERR_NOSPACE;
 
@@ -262,10 +327,10 @@
 	uint32_t tag;
 	int offset, nextoffset;
 
-	FDT_SW_CHECK_HEADER(fdt);
+	FDT_SW_PROBE_STRUCT(fdt);
 
 	/* Add terminator */
-	end = _fdt_grab_space(fdt, sizeof(*end));
+	end = fdt_grab_space_(fdt, sizeof(*end));
 	if (! end)
 		return -FDT_ERR_NOSPACE;
 	*end = cpu_to_fdt32(FDT_END);
@@ -281,7 +346,7 @@
 	while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
 		if (tag == FDT_PROP) {
 			struct fdt_property *prop =
-				_fdt_offset_ptr_w(fdt, offset);
+				fdt_offset_ptr_w_(fdt, offset);
 			int nameoff;
 
 			nameoff = fdt32_to_cpu(prop->nameoff);
diff -Nru device-tree-compiler-1.4.5/libfdt/fdt_wip.c device-tree-compiler-1.4.7/libfdt/fdt_wip.c
--- device-tree-compiler-1.4.5/libfdt/fdt_wip.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/fdt_wip.c	2018-07-23 03:00:50.000000000 +0000
@@ -93,7 +93,7 @@
 						   val, len);
 }
 
-static void _fdt_nop_region(void *start, int len)
+static void fdt_nop_region_(void *start, int len)
 {
 	fdt32_t *p;
 
@@ -110,12 +110,12 @@
 	if (!prop)
 		return len;
 
-	_fdt_nop_region(prop, len + sizeof(*prop));
+	fdt_nop_region_(prop, len + sizeof(*prop));
 
 	return 0;
 }
 
-int _fdt_node_end_offset(void *fdt, int offset)
+int fdt_node_end_offset_(void *fdt, int offset)
 {
 	int depth = 0;
 
@@ -129,11 +129,11 @@
 {
 	int endoffset;
 
-	endoffset = _fdt_node_end_offset(fdt, nodeoffset);
+	endoffset = fdt_node_end_offset_(fdt, nodeoffset);
 	if (endoffset < 0)
 		return endoffset;
 
-	_fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
+	fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),
 			endoffset - nodeoffset);
 	return 0;
 }
diff -Nru device-tree-compiler-1.4.5/libfdt/libfdt_env.h device-tree-compiler-1.4.7/libfdt/libfdt_env.h
--- device-tree-compiler-1.4.5/libfdt/libfdt_env.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/libfdt_env.h	2018-07-23 03:00:50.000000000 +0000
@@ -1,5 +1,5 @@
-#ifndef _LIBFDT_ENV_H
-#define _LIBFDT_ENV_H
+#ifndef LIBFDT_ENV_H
+#define LIBFDT_ENV_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -56,6 +56,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <limits.h>
 
 #ifdef __CHECKER__
 #define FDT_FORCE __attribute__((force))
@@ -109,4 +110,31 @@
 #undef CPU_TO_FDT16
 #undef EXTRACT_BYTE
 
-#endif /* _LIBFDT_ENV_H */
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+
+/* strnlen() is not available on Mac OS < 10.7 */
+# if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \
+                                         MAC_OS_X_VERSION_10_7)
+
+#define strnlen fdt_strnlen
+
+/*
+ * fdt_strnlen: returns the length of a string or max_count - which ever is
+ * smallest.
+ * Input 1 string: the string whose size is to be determined
+ * Input 2 max_count: the maximum value returned by this function
+ * Output: length of the string or max_count (the smallest of the two)
+ */
+static inline size_t fdt_strnlen(const char *string, size_t max_count)
+{
+    const char *p = memchr(string, 0, max_count);
+    return p ? p - string : max_count;
+}
+
+#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED <
+          MAC_OS_X_VERSION_10_7) */
+
+#endif /* __APPLE__ */
+
+#endif /* LIBFDT_ENV_H */
diff -Nru device-tree-compiler-1.4.5/libfdt/libfdt.h device-tree-compiler-1.4.7/libfdt/libfdt.h
--- device-tree-compiler-1.4.5/libfdt/libfdt.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/libfdt.h	2018-07-23 03:00:50.000000000 +0000
@@ -1,5 +1,5 @@
-#ifndef _LIBFDT_H
-#define _LIBFDT_H
+#ifndef LIBFDT_H
+#define LIBFDT_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -54,7 +54,7 @@
 #include <libfdt_env.h>
 #include <fdt.h>
 
-#define FDT_FIRST_SUPPORTED_VERSION	0x10
+#define FDT_FIRST_SUPPORTED_VERSION	0x02
 #define FDT_LAST_SUPPORTED_VERSION	0x11
 
 /* Error codes: informative error codes */
@@ -90,8 +90,9 @@
 
 /* Error codes: codes for bad device tree blobs */
 #define FDT_ERR_TRUNCATED	8
-	/* FDT_ERR_TRUNCATED: Structure block of the given device tree
-	 * ends without an FDT_END tag. */
+	/* FDT_ERR_TRUNCATED: FDT or a sub-block is improperly
+	 * terminated (overflows, goes outside allowed bounds, or
+	 * isn't properly terminated).  */
 #define FDT_ERR_BADMAGIC	9
 	/* FDT_ERR_BADMAGIC: Given "device tree" appears not to be a
 	 * device tree at all - it is missing the flattened device
@@ -153,6 +154,29 @@
 
 uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
 
+/*
+ * Alignment helpers:
+ *     These helpers access words from a device tree blob.  They're
+ *     built to work even with unaligned pointers on platforms (ike
+ *     ARM) that don't like unaligned loads and stores
+ */
+
+static inline uint32_t fdt32_ld(const fdt32_t *p)
+{
+	fdt32_t v;
+
+	memcpy(&v, p, sizeof(v));
+	return fdt32_to_cpu(v);
+}
+
+static inline uint64_t fdt64_ld(const fdt64_t *p)
+{
+	fdt64_t v;
+
+	memcpy(&v, p, sizeof(v));
+	return fdt64_to_cpu(v);
+}
+
 /**********************************************************************/
 /* Traversal functions                                                */
 /**********************************************************************/
@@ -213,7 +237,7 @@
 /* General functions                                                  */
 /**********************************************************************/
 #define fdt_get_header(fdt, field) \
-	(fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
+	(fdt32_ld(&((const struct fdt_header *)(fdt))->field))
 #define fdt_magic(fdt)			(fdt_get_header(fdt, magic))
 #define fdt_totalsize(fdt)		(fdt_get_header(fdt, totalsize))
 #define fdt_off_dt_struct(fdt)		(fdt_get_header(fdt, off_dt_struct))
@@ -225,37 +249,50 @@
 #define fdt_size_dt_strings(fdt)	(fdt_get_header(fdt, size_dt_strings))
 #define fdt_size_dt_struct(fdt)		(fdt_get_header(fdt, size_dt_struct))
 
-#define __fdt_set_hdr(name) \
+#define fdt_set_hdr_(name) \
 	static inline void fdt_set_##name(void *fdt, uint32_t val) \
 	{ \
 		struct fdt_header *fdth = (struct fdt_header *)fdt; \
 		fdth->name = cpu_to_fdt32(val); \
 	}
-__fdt_set_hdr(magic);
-__fdt_set_hdr(totalsize);
-__fdt_set_hdr(off_dt_struct);
-__fdt_set_hdr(off_dt_strings);
-__fdt_set_hdr(off_mem_rsvmap);
-__fdt_set_hdr(version);
-__fdt_set_hdr(last_comp_version);
-__fdt_set_hdr(boot_cpuid_phys);
-__fdt_set_hdr(size_dt_strings);
-__fdt_set_hdr(size_dt_struct);
-#undef __fdt_set_hdr
+fdt_set_hdr_(magic);
+fdt_set_hdr_(totalsize);
+fdt_set_hdr_(off_dt_struct);
+fdt_set_hdr_(off_dt_strings);
+fdt_set_hdr_(off_mem_rsvmap);
+fdt_set_hdr_(version);
+fdt_set_hdr_(last_comp_version);
+fdt_set_hdr_(boot_cpuid_phys);
+fdt_set_hdr_(size_dt_strings);
+fdt_set_hdr_(size_dt_struct);
+#undef fdt_set_hdr_
+
+/**
+ * fdt_header_size - return the size of the tree's header
+ * @fdt: pointer to a flattened device tree
+ */
+size_t fdt_header_size_(uint32_t version);
+static inline size_t fdt_header_size(const void *fdt)
+{
+	return fdt_header_size_(fdt_version(fdt));
+}
 
 /**
- * fdt_check_header - sanity check a device tree or possible device tree
+ * fdt_check_header - sanity check a device tree header
+
  * @fdt: pointer to data which might be a flattened device tree
  *
  * fdt_check_header() checks that the given buffer contains what
- * appears to be a flattened device tree with sane information in its
- * header.
+ * appears to be a flattened device tree, and that the header contains
+ * valid information (to the extent that can be determined from the
+ * header alone).
  *
  * returns:
  *     0, if the buffer appears to contain a valid device tree
  *     -FDT_ERR_BADMAGIC,
  *     -FDT_ERR_BADVERSION,
- *     -FDT_ERR_BADSTATE, standard meanings, as above
+ *     -FDT_ERR_BADSTATE,
+ *     -FDT_ERR_TRUNCATED, standard meanings, as above
  */
 int fdt_check_header(const void *fdt);
 
@@ -284,6 +321,24 @@
 /* Read-only functions                                                */
 /**********************************************************************/
 
+int fdt_check_full(const void *fdt, size_t bufsize);
+
+/**
+ * fdt_get_string - retrieve a string from the strings block of a device tree
+ * @fdt: pointer to the device tree blob
+ * @stroffset: offset of the string within the strings block (native endian)
+ * @lenp: optional pointer to return the string's length
+ *
+ * fdt_get_string() retrieves a pointer to a single string from the
+ * strings block of the device tree blob at fdt, and optionally also
+ * returns the string's length in *lenp.
+ *
+ * returns:
+ *     a pointer to the string, on success
+ *     NULL, if stroffset is out of bounds, or doesn't point to a valid string
+ */
+const char *fdt_get_string(const void *fdt, int stroffset, int *lenp);
+
 /**
  * fdt_string - retrieve a string from the strings block of a device tree
  * @fdt: pointer to the device tree blob
@@ -294,7 +349,7 @@
  *
  * returns:
  *     a pointer to the string, on success
- *     NULL, if stroffset is out of bounds
+ *     NULL, if stroffset is out of bounds, or doesn't point to a valid string
  */
 const char *fdt_string(const void *fdt, int stroffset);
 
@@ -527,6 +582,9 @@
  * offset.  If lenp is non-NULL, the length of the property value is
  * also returned, in the integer pointed to by lenp.
  *
+ * Note that this code only works on device tree versions >= 16. fdt_getprop()
+ * works on all versions.
+ *
  * returns:
  *	pointer to the structure representing the property
  *		if lenp is non-NULL, *lenp contains the length of the property
@@ -1087,7 +1145,7 @@
  *
  * returns:
  *	0 <= n < FDT_MAX_NCELLS, on success
- *      2, if the node has no #address-cells property
+ *      2, if the node has no #size-cells property
  *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
  *		#size-cells property
  *	-FDT_ERR_BADMAGIC,
@@ -1310,10 +1368,13 @@
 	fdt64_t tmp = cpu_to_fdt64(val);
 	return fdt_property(fdt, name, &tmp, sizeof(tmp));
 }
+
+#ifndef SWIG /* Not available in Python */
 static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
 {
 	return fdt_property_u32(fdt, name, val);
 }
+#endif
 
 /**
  * fdt_property_placeholder - add a new property and return a ptr to its value
@@ -1449,7 +1510,7 @@
 		const void *val, int len);
 
 /**
- * fdt_setprop _placeholder - allocate space for a property
+ * fdt_setprop_placeholder - allocate space for a property
  * @fdt: pointer to the device tree blob
  * @nodeoffset: offset of the node whose property to change
  * @name: name of the property to change
@@ -1896,4 +1957,4 @@
 
 const char *fdt_strerror(int errval);
 
-#endif /* _LIBFDT_H */
+#endif /* LIBFDT_H */
diff -Nru device-tree-compiler-1.4.5/libfdt/libfdt_internal.h device-tree-compiler-1.4.7/libfdt/libfdt_internal.h
--- device-tree-compiler-1.4.5/libfdt/libfdt_internal.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/libfdt_internal.h	2018-07-23 03:00:50.000000000 +0000
@@ -1,5 +1,5 @@
-#ifndef _LIBFDT_INTERNAL_H
-#define _LIBFDT_INTERNAL_H
+#ifndef LIBFDT_INTERNAL_H
+#define LIBFDT_INTERNAL_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -55,29 +55,30 @@
 #define FDT_ALIGN(x, a)		(((x) + (a) - 1) & ~((a) - 1))
 #define FDT_TAGALIGN(x)		(FDT_ALIGN((x), FDT_TAGSIZE))
 
-#define FDT_CHECK_HEADER(fdt) \
+int fdt_ro_probe_(const void *fdt);
+#define FDT_RO_PROBE(fdt)			\
 	{ \
-		int __err; \
-		if ((__err = fdt_check_header(fdt)) != 0) \
-			return __err; \
+		int err_; \
+		if ((err_ = fdt_ro_probe_(fdt)) != 0)	\
+			return err_; \
 	}
 
-int _fdt_check_node_offset(const void *fdt, int offset);
-int _fdt_check_prop_offset(const void *fdt, int offset);
-const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
-int _fdt_node_end_offset(void *fdt, int nodeoffset);
+int fdt_check_node_offset_(const void *fdt, int offset);
+int fdt_check_prop_offset_(const void *fdt, int offset);
+const char *fdt_find_string_(const char *strtab, int tabsize, const char *s);
+int fdt_node_end_offset_(void *fdt, int nodeoffset);
 
-static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
+static inline const void *fdt_offset_ptr_(const void *fdt, int offset)
 {
 	return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
 }
 
-static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
+static inline void *fdt_offset_ptr_w_(void *fdt, int offset)
 {
-	return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
+	return (void *)(uintptr_t)fdt_offset_ptr_(fdt, offset);
 }
 
-static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
+static inline const struct fdt_reserve_entry *fdt_mem_rsv_(const void *fdt, int n)
 {
 	const struct fdt_reserve_entry *rsv_table =
 		(const struct fdt_reserve_entry *)
@@ -85,11 +86,11 @@
 
 	return rsv_table + n;
 }
-static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
+static inline struct fdt_reserve_entry *fdt_mem_rsv_w_(void *fdt, int n)
 {
-	return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
+	return (void *)(uintptr_t)fdt_mem_rsv_(fdt, n);
 }
 
 #define FDT_SW_MAGIC		(~FDT_MAGIC)
 
-#endif /* _LIBFDT_INTERNAL_H */
+#endif /* LIBFDT_INTERNAL_H */
diff -Nru device-tree-compiler-1.4.5/libfdt/version.lds device-tree-compiler-1.4.7/libfdt/version.lds
--- device-tree-compiler-1.4.5/libfdt/version.lds	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/libfdt/version.lds	2018-07-23 03:00:50.000000000 +0000
@@ -60,9 +60,12 @@
 		fdt_address_cells;
 		fdt_size_cells;
 		fdt_stringlist_contains;
+		fdt_stringlist_count;
+		fdt_stringlist_search;
+		fdt_stringlist_get;
 		fdt_resize;
 		fdt_overlay_apply;
-
+		fdt_get_string;
 	local:
 		*;
 };
diff -Nru device-tree-compiler-1.4.5/livetree.c device-tree-compiler-1.4.7/livetree.c
--- device-tree-compiler-1.4.5/livetree.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/livetree.c	2018-07-23 03:00:50.000000000 +0000
@@ -134,6 +134,20 @@
 	return node;
 }
 
+struct node *omit_node_if_unused(struct node *node)
+{
+	node->omit_if_unused = 1;
+
+	return node;
+}
+
+struct node *reference_node(struct node *node)
+{
+	node->is_referenced = 1;
+
+	return node;
+}
+
 struct node *merge_nodes(struct node *old_node, struct node *new_node)
 {
 	struct property *new_prop, *old_prop;
@@ -216,6 +230,35 @@
 	return old_node;
 }
 
+struct node * add_orphan_node(struct node *dt, struct node *new_node, char *ref)
+{
+	static unsigned int next_orphan_fragment = 0;
+	struct node *node;
+	struct property *p;
+	struct data d = empty_data;
+	char *name;
+
+	if (ref[0] == '/') {
+		d = data_append_data(d, ref, strlen(ref) + 1);
+
+		p = build_property("target-path", d);
+	} else {
+		d = data_add_marker(d, REF_PHANDLE, ref);
+		d = data_append_integer(d, 0xffffffff, 32);
+
+		p = build_property("target", d);
+	}
+
+	xasprintf(&name, "fragment@%u",
+			next_orphan_fragment++);
+	name_node(new_node, "__overlay__");
+	node = build_node(p, new_node);
+	name_node(node, name);
+
+	add_child(dt, node);
+	return dt;
+}
+
 struct node *chain_node(struct node *first, struct node *list)
 {
 	assert(first->next_sibling == NULL);
@@ -485,7 +528,7 @@
 
 	for_each_child(tree, child) {
 		if (p && (strlen(child->name) == p-path) &&
-				strneq(path, child->name, p-path))
+		    strprefixeq(path, p - path, child->name))
 			return get_node_by_path(child, p+1);
 		else if (!p && streq(path, child->name))
 			return child;
@@ -518,7 +561,10 @@
 {
 	struct node *child, *node;
 
-	assert((phandle != 0) && (phandle != -1));
+	if ((phandle == 0) || (phandle == -1)) {
+		assert(generate_fixups);
+		return NULL;
+	}
 
 	if (tree->phandle == phandle) {
 		if (tree->deleted)
@@ -548,6 +594,7 @@
 cell_t get_node_phandle(struct node *root, struct node *node)
 {
 	static cell_t phandle = 1; /* FIXME: ick, static local */
+	struct data d = empty_data;
 
 	if ((node->phandle != 0) && (node->phandle != -1))
 		return node->phandle;
@@ -557,17 +604,16 @@
 
 	node->phandle = phandle;
 
+	d = data_add_marker(d, TYPE_UINT32, NULL);
+	d = data_append_cell(d, phandle);
+
 	if (!get_property(node, "linux,phandle")
 	    && (phandle_format & PHANDLE_LEGACY))
-		add_property(node,
-			     build_property("linux,phandle",
-					    data_append_cell(empty_data, phandle)));
+		add_property(node, build_property("linux,phandle", d));
 
 	if (!get_property(node, "phandle")
 	    && (phandle_format & PHANDLE_EPAPR))
-		add_property(node,
-			     build_property("phandle",
-					    data_append_cell(empty_data, phandle)));
+		add_property(node, build_property("phandle", d));
 
 	/* If the node *does* have a phandle property, we must
 	 * be dealing with a self-referencing phandle, which will be
diff -Nru device-tree-compiler-1.4.5/Makefile device-tree-compiler-1.4.7/Makefile
--- device-tree-compiler-1.4.5/Makefile	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/Makefile	2018-07-23 03:00:50.000000000 +0000
@@ -10,7 +10,7 @@
 #
 VERSION = 1
 PATCHLEVEL = 4
-SUBLEVEL = 5
+SUBLEVEL = 7
 EXTRAVERSION =
 LOCAL_VERSION =
 CONFIG_LOCALVERSION =
@@ -26,6 +26,10 @@
 PKG_CONFIG ?= pkg-config
 
 INSTALL = /usr/bin/install
+INSTALL_PROGRAM = $(INSTALL)
+INSTALL_LIB = $(INSTALL)
+INSTALL_DATA = $(INSTALL) -m 644
+INSTALL_SCRIPT = $(INSTALL)
 DESTDIR =
 PREFIX = $(HOME)
 BINDIR = $(PREFIX)/bin
@@ -126,19 +130,23 @@
 
 all: $(BIN) libfdt
 
-# We need both Python and swig to build pylibfdt.
-.PHONY: maybe_pylibfdt
-maybe_pylibfdt: FORCE
+# We need both Python and swig to build/install pylibfdt.
+# This builds the given make ${target} if those deps are found.
+check_python_deps = \
 	if $(PKG_CONFIG) --cflags python2 >/dev/null 2>&1; then \
 		if which swig >/dev/null 2>&1; then \
 			can_build=yes; \
 		fi; \
 	fi; \
-	if [ "$$can_build" = "yes" ]; then \
-		$(MAKE) pylibfdt; \
+	if [ "$${can_build}" = "yes" ]; then \
+		$(MAKE) $${target}; \
 	else \
-		echo "## Skipping pylibfdt (install python dev and swig to build)"; \
-	fi
+		echo "\#\# Skipping pylibfdt (install python dev and swig to build)"; \
+	fi ;
+
+.PHONY: maybe_pylibfdt
+maybe_pylibfdt: FORCE
+	target=pylibfdt; $(check_python_deps)
 
 ifeq ($(NO_PYTHON),)
 all: maybe_pylibfdt
@@ -191,25 +199,30 @@
 install-bin: all $(SCRIPTS)
 	@$(VECHO) INSTALL-BIN
 	$(INSTALL) -d $(DESTDIR)$(BINDIR)
-	$(INSTALL) $(BIN) $(SCRIPTS) $(DESTDIR)$(BINDIR)
+	$(INSTALL_PROGRAM) $(BIN) $(DESTDIR)$(BINDIR)
+	$(INSTALL_SCRIPT) $(SCRIPTS) $(DESTDIR)$(BINDIR)
 
 install-lib: all
 	@$(VECHO) INSTALL-LIB
 	$(INSTALL) -d $(DESTDIR)$(LIBDIR)
-	$(INSTALL) $(LIBFDT_lib) $(DESTDIR)$(LIBDIR)
+	$(INSTALL_LIB) $(LIBFDT_lib) $(DESTDIR)$(LIBDIR)
 	ln -sf $(notdir $(LIBFDT_lib)) $(DESTDIR)$(LIBDIR)/$(LIBFDT_soname)
 	ln -sf $(LIBFDT_soname) $(DESTDIR)$(LIBDIR)/libfdt.$(SHAREDLIB_EXT)
-	$(INSTALL) -m 644 $(LIBFDT_archive) $(DESTDIR)$(LIBDIR)
+	$(INSTALL_DATA) $(LIBFDT_archive) $(DESTDIR)$(LIBDIR)
 
 install-includes:
 	@$(VECHO) INSTALL-INC
 	$(INSTALL) -d $(DESTDIR)$(INCLUDEDIR)
-	$(INSTALL) -m 644 $(LIBFDT_include) $(DESTDIR)$(INCLUDEDIR)
+	$(INSTALL_DATA) $(LIBFDT_include) $(DESTDIR)$(INCLUDEDIR)
 
 install: install-bin install-lib install-includes
 
+.PHONY: maybe_install_pylibfdt
+maybe_install_pylibfdt: FORCE
+	target=install_pylibfdt; $(check_python_deps)
+
 ifeq ($(NO_PYTHON),)
-install: install_pylibfdt
+install: maybe_install_pylibfdt
 endif
 
 $(VERSION_FILE): Makefile FORCE
diff -Nru device-tree-compiler-1.4.5/pylibfdt/libfdt.i device-tree-compiler-1.4.7/pylibfdt/libfdt.i
--- device-tree-compiler-1.4.5/pylibfdt/libfdt.i	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/pylibfdt/libfdt.i	2018-07-23 03:00:50.000000000 +0000
@@ -57,6 +57,18 @@
 %{
 #define SWIG_FILE_WITH_INIT
 #include "libfdt.h"
+
+/*
+ * We rename this function here to avoid problems with swig, since we also have
+ * a struct called fdt_property. That struct causes swig to create a class in
+ * libfdt.py called fdt_property(), which confuses things.
+ */
+static int fdt_property_stub(void *fdt, const char *name, const char *val,
+                             int len)
+{
+    return fdt_property(fdt, name, val, len);
+}
+
 %}
 
 %pythoncode %{
@@ -88,6 +100,7 @@
 # Pass this as the 'quiet' parameter to return -ENOTFOUND on NOTFOUND errors,
 # instead of raising an exception.
 QUIET_NOTFOUND = (NOTFOUND,)
+QUIET_NOSPACE = (NOSPACE,)
 
 
 class FdtException(Exception):
@@ -153,27 +166,182 @@
             raise FdtException(val)
     return val
 
-class Fdt:
-    """Device tree class, supporting all operations
-
-    The Fdt object is created is created from a device tree binary file,
-    e.g. with something like:
+class FdtRo(object):
+    """Class for a read-only device-tree
 
-       fdt = Fdt(open("filename.dtb").read())
-
-    Operations can then be performed using the methods in this class. Each
-    method xxx(args...) corresponds to a libfdt function fdt_xxx(fdt, args...).
-
-    All methods raise an FdtException if an error occurs. To avoid this
-    behaviour a 'quiet' parameter is provided for some functions. This
-    defaults to empty, but you can pass a list of errors that you expect.
-    If one of these errors occurs, the function will return an error number
-    (e.g. -NOTFOUND).
+    This is a base class used by FdtRw (read-write access) and FdtSw
+    (sequential-write access). It implements read-only access to the
+    device tree.
+
+    Here are the three classes and when you should use them:
+
+        FdtRo - read-only access to an existing FDT
+        FdtRw - read-write access to an existing FDT (most common case)
+        FdtSw - for creating a new FDT, as well as allowing read-only access
     """
     def __init__(self, data):
         self._fdt = bytearray(data)
         check_err(fdt_check_header(self._fdt));
 
+    def as_bytearray(self):
+        """Get the device tree contents as a bytearray
+
+        This can be passed directly to libfdt functions that access a
+        const void * for the device tree.
+
+        Returns:
+            bytearray containing the device tree
+        """
+        return bytearray(self._fdt)
+
+    def next_node(self, nodeoffset, depth, quiet=()):
+        """Find the next subnode
+
+        Args:
+            nodeoffset: Node offset of previous node
+            depth: The depth of the node at nodeoffset. This is used to
+                calculate the depth of the returned node
+            quiet: Errors to ignore (empty to raise on all errors)
+
+        Returns:
+            Typle:
+                Offset of the next node, if any, else a -ve error
+                Depth of the returned node, if any, else undefined
+
+        Raises:
+            FdtException if no more nodes found or other error occurs
+        """
+        return check_err(fdt_next_node(self._fdt, nodeoffset, depth), quiet)
+
+    def first_subnode(self, nodeoffset, quiet=()):
+        """Find the first subnode of a parent node
+
+        Args:
+            nodeoffset: Node offset of parent node
+            quiet: Errors to ignore (empty to raise on all errors)
+
+        Returns:
+            The offset of the first subnode, if any
+
+        Raises:
+            FdtException if no subnodes found or other error occurs
+        """
+        return check_err(fdt_first_subnode(self._fdt, nodeoffset), quiet)
+
+    def next_subnode(self, nodeoffset, quiet=()):
+        """Find the next subnode
+
+        Args:
+            nodeoffset: Node offset of previous subnode
+            quiet: Errors to ignore (empty to raise on all errors)
+
+        Returns:
+            The offset of the next subnode, if any
+
+        Raises:
+            FdtException if no more subnodes found or other error occurs
+        """
+        return check_err(fdt_next_subnode(self._fdt, nodeoffset), quiet)
+
+    def magic(self):
+        """Return the magic word from the header
+
+        Returns:
+            Magic word
+        """
+        return fdt_magic(self._fdt)
+
+    def totalsize(self):
+        """Return the total size of the device tree
+
+        Returns:
+            Total tree size in bytes
+        """
+        return fdt_totalsize(self._fdt)
+
+    def off_dt_struct(self):
+        """Return the start of the device-tree struct area
+
+        Returns:
+            Start offset of struct area
+        """
+        return fdt_off_dt_struct(self._fdt)
+
+    def off_dt_strings(self):
+        """Return the start of the device-tree string area
+
+        Returns:
+            Start offset of string area
+        """
+        return fdt_off_dt_strings(self._fdt)
+
+    def off_mem_rsvmap(self):
+        """Return the start of the memory reserve map
+
+        Returns:
+            Start offset of memory reserve map
+        """
+        return fdt_off_mem_rsvmap(self._fdt)
+
+    def version(self):
+        """Return the version of the device tree
+
+        Returns:
+            Version number of the device tree
+        """
+        return fdt_version(self._fdt)
+
+    def last_comp_version(self):
+        """Return the last compatible version of the device tree
+
+        Returns:
+            Last compatible version number of the device tree
+        """
+        return fdt_last_comp_version(self._fdt)
+
+    def boot_cpuid_phys(self):
+        """Return the physical boot CPU ID
+
+        Returns:
+            Physical boot CPU ID
+        """
+        return fdt_boot_cpuid_phys(self._fdt)
+
+    def size_dt_strings(self):
+        """Return the start of the device-tree string area
+
+        Returns:
+            Start offset of string area
+        """
+        return fdt_size_dt_strings(self._fdt)
+
+    def size_dt_struct(self):
+        """Return the start of the device-tree struct area
+
+        Returns:
+            Start offset of struct area
+        """
+        return fdt_size_dt_struct(self._fdt)
+
+    def num_mem_rsv(self, quiet=()):
+        """Return the number of memory reserve-map records
+
+        Returns:
+            Number of memory reserve-map records
+        """
+        return check_err(fdt_num_mem_rsv(self._fdt), quiet)
+
+    def get_mem_rsv(self, index, quiet=()):
+        """Return the indexed memory reserve-map record
+
+        Args:
+            index: Record to return (0=first)
+
+        Returns:
+            Number of memory reserve-map records
+        """
+        return check_err(fdt_get_mem_rsv(self._fdt, index), quiet)
+
     def subnode_offset(self, parentoffset, name, quiet=()):
         """Get the offset of a named subnode
 
@@ -206,6 +374,20 @@
         """
         return check_err(fdt_path_offset(self._fdt, path), quiet)
 
+    def get_name(self, nodeoffset):
+        """Get the name of a node
+
+        Args:
+            nodeoffset: Offset of node to check
+
+        Returns:
+            Node name
+
+        Raises:
+            FdtException on error (e.g. nodeoffset is invalid)
+        """
+        return check_err_null(fdt_get_name(self._fdt, nodeoffset))[0]
+
     def first_property_offset(self, nodeoffset, quiet=()):
         """Get the offset of the first property in a node offset
 
@@ -240,20 +422,6 @@
         return check_err(fdt_next_property_offset(self._fdt, prop_offset),
                          quiet)
 
-    def get_name(self, nodeoffset):
-        """Get the name of a node
-
-        Args:
-            nodeoffset: Offset of node to check
-
-        Returns:
-            Node name
-
-        Raises:
-            FdtException on error (e.g. nodeoffset is invalid)
-        """
-        return check_err_null(fdt_get_name(self._fdt, nodeoffset))[0]
-
     def get_property_by_offset(self, prop_offset, quiet=()):
         """Obtains a property that can be examined
 
@@ -274,51 +442,123 @@
             return pdata
         return Property(pdata[0], pdata[1])
 
-    def first_subnode(self, nodeoffset, quiet=()):
-        """Find the first subnode of a parent node
+    def getprop(self, nodeoffset, prop_name, quiet=()):
+        """Get a property from a node
 
         Args:
-            nodeoffset: Node offset of parent node
+            nodeoffset: Node offset containing property to get
+            prop_name: Name of property to get
             quiet: Errors to ignore (empty to raise on all errors)
 
         Returns:
-            The offset of the first subnode, if any
+            Value of property as a Property object (which can be used as a
+               bytearray/string), or -ve error number. On failure, returns an
+               integer error
 
         Raises:
-            FdtException if no subnode found or other error occurs
+            FdtError if any error occurs (e.g. the property is not found)
         """
-        return check_err(fdt_first_subnode(self._fdt, nodeoffset), quiet)
+        pdata = check_err_null(fdt_getprop(self._fdt, nodeoffset, prop_name),
+                               quiet)
+        if isinstance(pdata, (int)):
+            return pdata
+        return Property(prop_name, bytearray(pdata[0]))
 
-    def next_subnode(self, nodeoffset, quiet=()):
-        """Find the next subnode
+    def get_phandle(self, nodeoffset):
+        """Get the phandle of a node
 
         Args:
-            nodeoffset: Node offset of previous subnode
+            nodeoffset: Node offset to check
+
+        Returns:
+            phandle of node, or 0 if the node has no phandle or another error
+            occurs
+        """
+        return fdt_get_phandle(self._fdt, nodeoffset)
+
+    def parent_offset(self, nodeoffset, quiet=()):
+        """Get the offset of a node's parent
+
+        Args:
+            nodeoffset: Node offset to check
             quiet: Errors to ignore (empty to raise on all errors)
 
         Returns:
-            The offset of the next subnode, if any
+            The offset of the parent node, if any
 
         Raises:
-            FdtException if no more subnode found or other error occurs
+            FdtException if no parent found or other error occurs
         """
-        return check_err(fdt_next_subnode(self._fdt, nodeoffset), quiet)
+        return check_err(fdt_parent_offset(self._fdt, nodeoffset), quiet)
 
-    def totalsize(self):
-        """Return the total size of the device tree
+    def node_offset_by_phandle(self, phandle, quiet=()):
+        """Get the offset of a node with the given phandle
+
+        Args:
+            phandle: Phandle to search for
+            quiet: Errors to ignore (empty to raise on all errors)
 
         Returns:
-            Total tree size in bytes
+            The offset of node with that phandle, if any
+
+        Raises:
+            FdtException if no node found or other error occurs
         """
-        return check_err(fdt_totalsize(self._fdt))
+        return check_err(fdt_node_offset_by_phandle(self._fdt, phandle), quiet)
 
-    def off_dt_struct(self):
-        """Return the start of the device tree struct area
+
+class Fdt(FdtRo):
+    """Device tree class, supporting all operations
+
+    The Fdt object is created is created from a device tree binary file,
+    e.g. with something like:
+
+       fdt = Fdt(open("filename.dtb").read())
+
+    Operations can then be performed using the methods in this class. Each
+    method xxx(args...) corresponds to a libfdt function fdt_xxx(fdt, args...).
+
+    All methods raise an FdtException if an error occurs. To avoid this
+    behaviour a 'quiet' parameter is provided for some functions. This
+    defaults to empty, but you can pass a list of errors that you expect.
+    If one of these errors occurs, the function will return an error number
+    (e.g. -NOTFOUND).
+    """
+    def __init__(self, data):
+        FdtRo.__init__(self, data)
+
+    @staticmethod
+    def create_empty_tree(size, quiet=()):
+        """Create an empty device tree ready for use
+
+        Args:
+            size: Size of device tree in bytes
 
         Returns:
-            Start offset of struct area
+            Fdt object containing the device tree
         """
-        return check_err(fdt_off_dt_struct(self._fdt))
+        data = bytearray(size)
+        err = check_err(fdt_create_empty_tree(data, size), quiet)
+        if err:
+            return err
+        return Fdt(data)
+
+    def resize(self, size, quiet=()):
+        """Move the device tree into a larger or smaller space
+
+        This creates a new device tree of size @size and moves the existing
+        device tree contents over to that. It can be used to create more space
+        in a device tree. Note that the Fdt object remains the same, but it
+        now has a new bytearray holding the contents.
+
+        Args:
+            size: Required new size of device tree in bytes
+        """
+        fdt = bytearray(size)
+        err = check_err(fdt_open_into(self._fdt, fdt, size), quiet)
+        if err:
+            return err
+        self._fdt = fdt
 
     def pack(self, quiet=()):
         """Pack the device tree to remove unused space
@@ -328,86 +568,125 @@
         Args:
             quiet: Errors to ignore (empty to raise on all errors)
 
+        Returns:
+            Error code, or 0 if OK
+
         Raises:
             FdtException if any error occurs
         """
-        return check_err(fdt_pack(self._fdt), quiet)
+        err = check_err(fdt_pack(self._fdt), quiet)
+        if err:
+            return err
+        del self._fdt[self.totalsize():]
+        return err
 
-    def delprop(self, nodeoffset, prop_name):
-        """Delete a property from a node
+    def set_name(self, nodeoffset, name, quiet=()):
+        """Set the name of a node
 
         Args:
-            nodeoffset: Node offset containing property to delete
-            prop_name: Name of property to delete
+            nodeoffset: Node offset of node to update
+            name: New node name (string without \0)
+
+        Returns:
+            Error code, or 0 if OK
 
         Raises:
-            FdtError if the property does not exist, or another error occurs
+            FdtException if no parent found or other error occurs
         """
-        return check_err(fdt_delprop(self._fdt, nodeoffset, prop_name))
+        if chr(0) in name:
+            raise ValueError('Property contains embedded nul characters')
+        return check_err(fdt_set_name(self._fdt, nodeoffset, name), quiet)
 
-    def getprop(self, nodeoffset, prop_name, quiet=()):
-        """Get a property from a node
+    def setprop(self, nodeoffset, prop_name, val, quiet=()):
+        """Set the value of a property
 
         Args:
-            nodeoffset: Node offset containing property to get
-            prop_name: Name of property to get
+            nodeoffset: Node offset containing the property to create/update
+            prop_name: Name of property
+            val: Value to write (string or bytearray)
             quiet: Errors to ignore (empty to raise on all errors)
 
         Returns:
-            Value of property as a bytearray, or -ve error number
+            Error code, or 0 if OK
 
         Raises:
-            FdtError if any error occurs (e.g. the property is not found)
+            FdtException if no parent found or other error occurs
         """
-        pdata = check_err_null(fdt_getprop(self._fdt, nodeoffset, prop_name),
-                               quiet)
-        if isinstance(pdata, (int)):
-            return pdata
-        return bytearray(pdata[0])
+        return check_err(fdt_setprop(self._fdt, nodeoffset, prop_name, val,
+                                     len(val)), quiet)
 
-    def get_phandle(self, nodeoffset):
-        """Get the phandle of a node
+    def setprop_u32(self, nodeoffset, prop_name, val, quiet=()):
+        """Set the value of a property
 
         Args:
-            nodeoffset: Node offset to check
+            nodeoffset: Node offset containing the property to create/update
+            prop_name: Name of property
+            val: Value to write (integer)
+            quiet: Errors to ignore (empty to raise on all errors)
 
         Returns:
-            phandle of node, or 0 if the node has no phandle or another error
-            occurs
+            Error code, or 0 if OK
+
+        Raises:
+            FdtException if no parent found or other error occurs
         """
-        return fdt_get_phandle(self._fdt, nodeoffset)
+        return check_err(fdt_setprop_u32(self._fdt, nodeoffset, prop_name, val),
+                         quiet)
 
-    def parent_offset(self, nodeoffset, quiet=()):
-        """Get the offset of a node's parent
+    def setprop_u64(self, nodeoffset, prop_name, val, quiet=()):
+        """Set the value of a property
 
         Args:
-            nodeoffset: Node offset to check
+            nodeoffset: Node offset containing the property to create/update
+            prop_name: Name of property
+            val: Value to write (integer)
             quiet: Errors to ignore (empty to raise on all errors)
 
         Returns:
-            The offset of the parent node, if any
+            Error code, or 0 if OK
 
         Raises:
             FdtException if no parent found or other error occurs
         """
-        return check_err(fdt_parent_offset(self._fdt, nodeoffset), quiet)
+        return check_err(fdt_setprop_u64(self._fdt, nodeoffset, prop_name, val),
+                         quiet)
 
-    def node_offset_by_phandle(self, phandle, quiet=()):
-        """Get the offset of a node with the given phandle
+    def setprop_str(self, nodeoffset, prop_name, val, quiet=()):
+        """Set the string value of a property
+
+        The property is set to the string, with a nul terminator added
 
         Args:
-            phandle: Phandle to search for
+            nodeoffset: Node offset containing the property to create/update
+            prop_name: Name of property
+            val: Value to write (string without nul terminator). Unicode is
+                supposed by encoding to UTF-8
             quiet: Errors to ignore (empty to raise on all errors)
 
         Returns:
-            The offset of node with that phandle, if any
+            Error code, or 0 if OK
 
         Raises:
-            FdtException if no node found or other error occurs
+            FdtException if no parent found or other error occurs
         """
-        return check_err(fdt_node_offset_by_phandle(self._fdt, phandle), quiet)
+        val = val.encode('utf-8') + '\0'
+        return check_err(fdt_setprop(self._fdt, nodeoffset, prop_name,
+                                     val, len(val)), quiet)
+
+    def delprop(self, nodeoffset, prop_name):
+        """Delete a property from a node
+
+        Args:
+            nodeoffset: Node offset containing property to delete
+            prop_name: Name of property to delete
+
+        Raises:
+            FdtError if the property does not exist, or another error occurs
+        """
+        return check_err(fdt_delprop(self._fdt, nodeoffset, prop_name))
+
 
-class Property:
+class Property(bytearray):
     """Holds a device tree property name and value.
 
     This holds a copy of a property taken from the device tree. It does not
@@ -416,16 +695,305 @@
 
     Properties:
         name: Property name
-        value: Proper value as a bytearray
+        value: Property value as a bytearray
     """
     def __init__(self, name, value):
+        bytearray.__init__(self, value)
         self.name = name
-        self.value = value
+
+    def as_cell(self, fmt):
+        return struct.unpack('>' + fmt, self)[0]
+
+    def as_uint32(self):
+        return self.as_cell('L')
+
+    def as_int32(self):
+        return self.as_cell('l')
+
+    def as_uint64(self):
+        return self.as_cell('Q')
+
+    def as_int64(self):
+        return self.as_cell('q')
+
+    def as_str(self):
+        """Unicode is supported by decoding from UTF-8"""
+        if self[-1] != 0:
+            raise ValueError('Property lacks nul termination')
+        if 0 in self[:-1]:
+            raise ValueError('Property contains embedded nul characters')
+        return self[:-1].decode('utf-8')
+
+
+class FdtSw(FdtRo):
+    """Software interface to create a device tree from scratch
+
+    The methods in this class work by adding to an existing 'partial' device
+    tree buffer of a fixed size created by instantiating this class. When the
+    tree is complete, call as_fdt() to obtain a device tree ready to be used.
+
+    Similarly with nodes, a new node is started with begin_node() and finished
+    with end_node().
+
+    The context manager functions can be used to make this a bit easier:
+
+    # First create the device tree with a node and property:
+    sw = FdtSw()
+    with sw.add_node('node'):
+        sw.property_u32('reg', 2)
+    fdt = sw.as_fdt()
+
+    # Now we can use it as a real device tree
+    fdt.setprop_u32(0, 'reg', 3)
+
+    The size hint provides a starting size for the space to be used by the
+    device tree. This will be increased automatically as needed as new items
+    are added to the tree.
+    """
+    INC_SIZE = 1024  # Expand size by this much when out of space
+
+    def __init__(self, size_hint=None):
+        """Create a new FdtSw object
+
+        Args:
+            size_hint: A hint as to the initial size to use
+
+        Raises:
+            ValueError if size_hint is negative
+
+        Returns:
+            FdtSw object on success, else integer error code (if not raising)
+        """
+        if not size_hint:
+            size_hint = self.INC_SIZE
+        fdtsw = bytearray(size_hint)
+        err = check_err(fdt_create(fdtsw, size_hint))
+        if err:
+            return err
+        self._fdt = fdtsw
+
+    def as_fdt(self):
+        """Convert a FdtSw into an Fdt so it can be accessed as normal
+
+        Creates a new Fdt object from the work-in-progress device tree. This
+        does not call fdt_finish() on the current object, so it is possible to
+        add more nodes/properties and call as_fdt() again to get an updated
+        tree.
+
+        Returns:
+            Fdt object allowing access to the newly created device tree
+        """
+        fdtsw = bytearray(self._fdt)
+        check_err(fdt_finish(fdtsw))
+        return Fdt(fdtsw)
+
+    def check_space(self, val):
+        """Check if we need to add more space to the FDT
+
+        This should be called with the error code from an operation. If this is
+        -NOSPACE then the FDT will be expanded to have more space, and True will
+        be returned, indicating that the operation needs to be tried again.
+
+        Args:
+            val: Return value from the operation that was attempted
+
+        Returns:
+            True if the operation must be retried, else False
+        """
+        if check_err(val, QUIET_NOSPACE) < 0:
+            self.resize(len(self._fdt) + self.INC_SIZE)
+            return True
+        return False
+
+    def resize(self, size):
+        """Resize the buffer to accommodate a larger tree
+
+        Args:
+            size: New size of tree
+
+        Raises:
+            FdtException on any error
+        """
+        fdt = bytearray(size)
+        err = check_err(fdt_resize(self._fdt, fdt, size))
+        self._fdt = fdt
+
+    def add_reservemap_entry(self, addr, size):
+        """Add a new memory reserve map entry
+
+        Once finished adding, you must call finish_reservemap().
+
+        Args:
+            addr: 64-bit start address
+            size: 64-bit size
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_add_reservemap_entry(self._fdt, addr,
+                                                        size)):
+            pass
+
+    def finish_reservemap(self):
+        """Indicate that there are no more reserve map entries to add
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_finish_reservemap(self._fdt)):
+            pass
+
+    def begin_node(self, name):
+        """Begin a new node
+
+        Use this before adding properties to the node. Then call end_node() to
+        finish it. You can also use the context manager as shown in the FdtSw
+        class comment.
+
+        Args:
+            name: Name of node to begin
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_begin_node(self._fdt, name)):
+            pass
+
+    def property_string(self, name, string):
+        """Add a property with a string value
+
+        The string will be nul-terminated when written to the device tree
+
+        Args:
+            name: Name of property to add
+            string: String value of property
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_property_string(self._fdt, name, string)):
+            pass
+
+    def property_u32(self, name, val):
+        """Add a property with a 32-bit value
+
+        Write a single-cell value to the device tree
+
+        Args:
+            name: Name of property to add
+            val: Value of property
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_property_u32(self._fdt, name, val)):
+            pass
+
+    def property_u64(self, name, val):
+        """Add a property with a 64-bit value
+
+        Write a double-cell value to the device tree in big-endian format
+
+        Args:
+            name: Name of property to add
+            val: Value of property
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_property_u64(self._fdt, name, val)):
+            pass
+
+    def property_cell(self, name, val):
+        """Add a property with a single-cell value
+
+        Write a single-cell value to the device tree
+
+        Args:
+            name: Name of property to add
+            val: Value of property
+            quiet: Errors to ignore (empty to raise on all errors)
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_property_cell(self._fdt, name, val)):
+            pass
+
+    def property(self, name, val):
+        """Add a property
+
+        Write a new property with the given value to the device tree. The value
+        is taken as is and is not nul-terminated
+
+        Args:
+            name: Name of property to add
+            val: Value of property
+            quiet: Errors to ignore (empty to raise on all errors)
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_property_stub(self._fdt, name, val,
+                                                 len(val))):
+            pass
+
+    def end_node(self):
+        """End a node
+
+        Use this after adding properties to a node to close it off. You can also
+        use the context manager as shown in the FdtSw class comment.
+
+        Args:
+            quiet: Errors to ignore (empty to raise on all errors)
+
+        Raises:
+            FdtException on any error
+        """
+        while self.check_space(fdt_end_node(self._fdt)):
+            pass
+
+    def add_node(self, name):
+        """Create a new context for adding a node
+
+        When used in a 'with' clause this starts a new node and finishes it
+        afterward.
+
+        Args:
+            name: Name of node to add
+        """
+        return NodeAdder(self, name)
+
+
+class NodeAdder():
+    """Class to provide a node context
+
+    This allows you to add nodes in a more natural way:
+
+        with fdtsw.add_node('name'):
+            fdtsw.property_string('test', 'value')
+
+    The node is automatically completed with a call to end_node() when the
+    context exits.
+    """
+    def __init__(self, fdtsw, name):
+        self._fdt = fdtsw
+        self._name = name
+
+    def __enter__(self):
+        self._fdt.begin_node(self._name)
+
+    def __exit__(self, type, value, traceback):
+        self._fdt.end_node()
 %}
 
 %rename(fdt_property) fdt_property_func;
 
-typedef int fdt32_t;
+/*
+ * fdt32_t is a big-endian 32-bit value defined to uint32_t in libfdt_env.h
+ * so use the same type here.
+ */
+typedef uint32_t fdt32_t;
 
 %include "libfdt/fdt.h"
 
@@ -453,6 +1021,7 @@
         fdt = fdt; /* avoid unused variable warning */
 }
 
+/* typemap used for fdt_get_property_by_offset() */
 %typemap(out) (struct fdt_property *) {
 	PyObject *buff;
 
@@ -475,19 +1044,66 @@
 		$result = Py_BuildValue("s#", $1, *arg4);
 }
 
+/* typemap used for fdt_setprop() */
+%typemap(in) (const void *val) {
+    $1 = PyString_AsString($input);   /* char *str */
+}
+
+/* typemap used for fdt_add_reservemap_entry() */
+%typemap(in) uint64_t {
+   $1 = PyLong_AsUnsignedLong($input);
+}
+
+/* typemaps used for fdt_next_node() */
+%typemap(in, numinputs=1) int *depth (int depth) {
+   depth = (int) PyInt_AsLong($input);
+   $1 = &depth;
+}
+
+%typemap(argout) int *depth {
+        PyObject *val = Py_BuildValue("i", *arg$argnum);
+        resultobj = SWIG_Python_AppendOutput(resultobj, val);
+}
+
+%apply int *depth { int *depth };
+
+/* typemaps for fdt_get_mem_rsv */
+%typemap(in, numinputs=0) uint64_t * (uint64_t temp) {
+   $1 = &temp;
+}
+
+%typemap(argout) uint64_t * {
+        PyObject *val = PyLong_FromUnsignedLong(*arg$argnum);
+        if (!result) {
+           if (PyTuple_GET_SIZE(resultobj) == 0)
+              resultobj = val;
+           else
+              resultobj = SWIG_Python_AppendOutput(resultobj, val);
+        }
+}
+
 /* We have both struct fdt_property and a function fdt_property() */
 %warnfilter(302) fdt_property;
 
 /* These are macros in the header so have to be redefined here */
-int fdt_magic(const void *fdt);
-int fdt_totalsize(const void *fdt);
-int fdt_off_dt_struct(const void *fdt);
-int fdt_off_dt_strings(const void *fdt);
-int fdt_off_mem_rsvmap(const void *fdt);
-int fdt_version(const void *fdt);
-int fdt_last_comp_version(const void *fdt);
-int fdt_boot_cpuid_phys(const void *fdt);
-int fdt_size_dt_strings(const void *fdt);
-int fdt_size_dt_struct(const void *fdt);
+uint32_t fdt_magic(const void *fdt);
+uint32_t fdt_totalsize(const void *fdt);
+uint32_t fdt_off_dt_struct(const void *fdt);
+uint32_t fdt_off_dt_strings(const void *fdt);
+uint32_t fdt_off_mem_rsvmap(const void *fdt);
+uint32_t fdt_version(const void *fdt);
+uint32_t fdt_last_comp_version(const void *fdt);
+uint32_t fdt_boot_cpuid_phys(const void *fdt);
+uint32_t fdt_size_dt_strings(const void *fdt);
+uint32_t fdt_size_dt_struct(const void *fdt);
+
+int fdt_property_string(void *fdt, const char *name, const char *val);
+int fdt_property_cell(void *fdt, const char *name, uint32_t val);
+
+/*
+ * This function has a stub since the name fdt_property is used for both a
+  * function and a struct, which confuses SWIG.
+ */
+int fdt_property_stub(void *fdt, const char *name, const char *val, int len);
 
 %include <../libfdt/libfdt.h>
diff -Nru device-tree-compiler-1.4.5/srcpos.c device-tree-compiler-1.4.7/srcpos.c
--- device-tree-compiler-1.4.5/srcpos.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/srcpos.c	2018-07-23 03:00:50.000000000 +0000
@@ -209,8 +209,6 @@
 	.file = NULL,
 };
 
-#define TAB_SIZE      8
-
 void srcpos_update(struct srcpos *pos, const char *text, int len)
 {
 	int i;
@@ -224,9 +222,6 @@
 		if (text[i] == '\n') {
 			current_srcfile->lineno++;
 			current_srcfile->colno = 1;
-		} else if (text[i] == '\t') {
-			current_srcfile->colno =
-				ALIGN(current_srcfile->colno, TAB_SIZE);
 		} else {
 			current_srcfile->colno++;
 		}
diff -Nru device-tree-compiler-1.4.5/srcpos.h device-tree-compiler-1.4.7/srcpos.h
--- device-tree-compiler-1.4.5/srcpos.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/srcpos.h	2018-07-23 03:00:50.000000000 +0000
@@ -17,8 +17,8 @@
  *                                                                   USA
  */
 
-#ifndef _SRCPOS_H_
-#define _SRCPOS_H_
+#ifndef SRCPOS_H
+#define SRCPOS_H
 
 #include <stdio.h>
 #include <stdbool.h>
@@ -114,4 +114,4 @@
 
 extern void srcpos_set_line(char *f, int l);
 
-#endif /* _SRCPOS_H_ */
+#endif /* SRCPOS_H */
diff -Nru device-tree-compiler-1.4.5/tests/addresses.dts device-tree-compiler-1.4.7/tests/addresses.dts
--- device-tree-compiler-1.4.5/tests/addresses.dts	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/addresses.dts	2018-07-23 03:00:50.000000000 +0000
@@ -12,4 +12,19 @@
 		#address-cells = <2>;
 		#size-cells = <1>;
 	};
+
+	c0@0 {
+		#address-cells = <1 1>;
+		#size-cells = <1 1>;
+	};
+
+	c1@0 {
+		#address-cells = <0x80000000>;
+		#size-cells = <0x80000000>;
+	};
+
+	c2@0 {
+		#address-cells = <5>;
+		#size-cells = <5>;
+	};
 };
diff -Nru device-tree-compiler-1.4.5/tests/addr_size_cells2.c device-tree-compiler-1.4.7/tests/addr_size_cells2.c
--- device-tree-compiler-1.4.5/tests/addr_size_cells2.c	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/addr_size_cells2.c	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,62 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for #address-cells and #size-cells handling
+ * Copyright (C) 2014 David Gibson, <david@gibson.dropbear.id.au>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+static void check_node(const void *fdt, const char *path, int ac, int sc)
+{
+	int offset;
+	int xac, xsc;
+
+	offset = fdt_path_offset(fdt, path);
+	if (offset < 0)
+		FAIL("Couldn't find path %s", path);
+
+	xac = fdt_address_cells(fdt, offset);
+	xsc = fdt_size_cells(fdt, offset);
+
+	if (xac != ac)
+		FAIL("Address cells for %s is %d instead of %d\n",
+		     path, xac, ac);
+	if (xsc != sc)
+		FAIL("Size cells for %s is %d instead of %d\n",
+		     path, xsc, sc);
+}
+
+int main(int argc, char *argv[])
+{
+	void *fdt;
+
+	if (argc != 2)
+		CONFIG("Usage: %s <dtb file>\n", argv[0]);
+
+	test_init(argc, argv);
+	fdt = load_blob(argv[1]);
+
+	check_node(fdt, "/", 2, 2);
+	PASS();
+}
diff -Nru device-tree-compiler-1.4.5/tests/addr_size_cells.c device-tree-compiler-1.4.7/tests/addr_size_cells.c
--- device-tree-compiler-1.4.5/tests/addr_size_cells.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/addr_size_cells.c	2018-07-23 03:00:50.000000000 +0000
@@ -60,5 +60,8 @@
 	check_node(fdt, "/", 2, 2);
 	check_node(fdt, "/identity-bus@0", 2, 2);
 	check_node(fdt, "/simple-bus@1000000", 2, 1);
+	check_node(fdt, "/c0", -FDT_ERR_BADNCELLS, -FDT_ERR_BADNCELLS);
+	check_node(fdt, "/c1", -FDT_ERR_BADNCELLS, -FDT_ERR_BADNCELLS);
+	check_node(fdt, "/c2", -FDT_ERR_BADNCELLS, -FDT_ERR_BADNCELLS);
 	PASS();
 }
diff -Nru device-tree-compiler-1.4.5/tests/bad-chosen.dts device-tree-compiler-1.4.7/tests/bad-chosen.dts
--- device-tree-compiler-1.4.5/tests/bad-chosen.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/bad-chosen.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,10 @@
+/dts-v1/;
+
+/ {
+	node2 {
+		chosen {
+			bootargs = <0xdeadbeef>;
+			stdout-path = <1>;
+		};
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/bad-graph.dts device-tree-compiler-1.4.7/tests/bad-graph.dts
--- device-tree-compiler-1.4.5/tests/bad-graph.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/bad-graph.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,24 @@
+/dts-v1/;
+
+/ {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		bad_endpoint: port-a@0 {
+			reg = <0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			endpoint@d0 {
+				reg = <0>;
+				remote-endpoint = <0xdeadbeef>;
+			};
+
+		};
+
+		port@1 {
+			reg = <0>;
+		};
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/bad-string-props.dts device-tree-compiler-1.4.7/tests/bad-string-props.dts
--- device-tree-compiler-1.4.5/tests/bad-string-props.dts	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/bad-string-props.dts	2018-07-23 03:00:50.000000000 +0000
@@ -4,4 +4,11 @@
 	device_type = <0xdeadbeef>;
 	model = <0xdeadbeef>;
 	status = <0xdeadbeef>;
+	label = <0xdeadbeef>;
+
+	foobar-names = "foo", <1>;
+
+	node {
+		compatible = "good", <0xdeadbeef>;
+	};
 };
diff -Nru device-tree-compiler-1.4.5/tests/check_full.c device-tree-compiler-1.4.7/tests/check_full.c
--- device-tree-compiler-1.4.5/tests/check_full.c	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/check_full.c	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,63 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Tests if two given dtbs are structurally equal (including order)
+ * Copyright (C) 2007 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+static int expect_bad; /* = 0 */
+
+int main(int argc, char *argv[])
+{
+	const char *filename;
+	char *fdt;
+	size_t len;
+	int err;
+
+	test_init(argc, argv);
+	if ((argc != 2)
+	    && ((argc != 3) || !streq(argv[1], "-n")))
+		CONFIG("Usage: %s [-n] <dtb file>", argv[0]);
+	if (argc == 3)
+		expect_bad = 1;
+
+	filename = argv[argc-1];
+	err = utilfdt_read_err(filename, &fdt, &len);
+	if (err)
+		CONFIG("Couldn't open blob from \"%s\": %s",
+		       filename, strerror(err));
+
+	vg_prepare_blob(fdt, len);
+
+	err = fdt_check_full(fdt, len);
+
+	if (expect_bad && (err == 0))
+		FAIL("fdt_check_full() succeeded unexpectedly");
+	else if (!expect_bad && (err != 0))
+		FAIL("fdt_check_full() failed: %s", fdt_strerror(err));
+
+	PASS();
+}
diff -Nru device-tree-compiler-1.4.5/tests/check_header.c device-tree-compiler-1.4.7/tests/check_header.c
--- device-tree-compiler-1.4.5/tests/check_header.c	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/check_header.c	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,128 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for fdt_check_header
+ * Copyright (C) 2018 David Gibson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+
+static void *dtdup(void *dt)
+{
+	size_t bufsize = fdt_totalsize(dt);
+	void *buf = xmalloc(bufsize);
+	fdt_move(dt, buf, bufsize);
+	return buf;
+}
+
+#define CHECK_MANGLE(exerr, code)					\
+	do {								\
+		void *fdt = dtdup(template);				\
+		{ code }						\
+		err = fdt_check_header(fdt);				\
+		verbose_printf("\"%s\" => %s\n", #code, fdt_strerror(err)); \
+		if (err != (exerr))					\
+			FAIL("fdt_check_header() didn't catch mangle %s", \
+			     #code);					\
+		free(fdt);						\
+	} while (0)
+
+int main(int argc, char *argv[])
+{
+	void *template;
+	int err;
+
+	test_init(argc, argv);
+	template = load_blob(argv[1]);
+
+	/* Check that the base dt is valid before mangling it */
+	err = fdt_check_header(template);
+	if (err != 0)
+		FAIL("Base tree fails: %s", fdt_strerror(err));
+
+	/* Check a no-op mangle doesn't break things */
+	CHECK_MANGLE(0, ; );
+
+	/* Mess up the magic number */
+	CHECK_MANGLE(-FDT_ERR_BADMAGIC,
+		fdt_set_magic(fdt, fdt_magic(fdt) ^ 0x1);
+	);
+	CHECK_MANGLE(-FDT_ERR_BADMAGIC,
+		fdt_set_magic(fdt, fdt_magic(fdt) ^ 0x80000000);
+	);
+
+	/* Mess up the version */
+	CHECK_MANGLE(-FDT_ERR_BADVERSION,
+		fdt_set_version(fdt, FDT_FIRST_SUPPORTED_VERSION - 1);
+		fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION - 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_BADVERSION,
+		fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION + 1);
+		fdt_set_last_comp_version(fdt, FDT_LAST_SUPPORTED_VERSION + 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_BADVERSION,
+		fdt_set_version(fdt, FDT_FIRST_SUPPORTED_VERSION);
+		fdt_set_last_comp_version(fdt, FDT_LAST_SUPPORTED_VERSION);
+	);
+
+	/* Out of bounds sizes */
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_totalsize(fdt, FDT_V1_SIZE - 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		     fdt_set_totalsize(fdt, (uint32_t)INT_MAX + 1);
+	);
+
+	/* Truncate within various blocks */
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_totalsize(fdt, fdt_off_dt_struct(fdt) - 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_totalsize(fdt, fdt_off_dt_strings(fdt) - 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_totalsize(fdt, fdt_off_mem_rsvmap(fdt) - 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_totalsize(fdt, fdt_off_dt_struct(fdt) + 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_totalsize(fdt, fdt_off_dt_strings(fdt) + 1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_totalsize(fdt, fdt_off_mem_rsvmap(fdt) + 1);
+	);
+
+	/* Negative block sizes */
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_size_dt_struct(fdt, (uint32_t)-1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_size_dt_strings(fdt, (uint32_t)-1);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		     fdt_set_size_dt_struct(fdt, (uint32_t)INT_MIN);
+	);
+	CHECK_MANGLE(-FDT_ERR_TRUNCATED,
+		fdt_set_size_dt_strings(fdt, (uint32_t)INT_MIN);
+	);
+
+	PASS();
+}
diff -Nru device-tree-compiler-1.4.5/tests/dtc-checkfails.sh device-tree-compiler-1.4.7/tests/dtc-checkfails.sh
--- device-tree-compiler-1.4.5/tests/dtc-checkfails.sh	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/dtc-checkfails.sh	2018-07-23 03:00:50.000000000 +0000
@@ -30,13 +30,13 @@
 FAIL_IF_SIGNAL $ret
 
 for c in $YESCHECKS; do
-    if ! grep -E "^(ERROR)|(Warning) \($c\):" $LOG > /dev/null; then
+    if ! grep -E "(ERROR|Warning) \($c\):" $LOG > /dev/null; then
 	FAIL "Failed to trigger check \"$c\""
     fi
 done
 
 for c in $NOCHECKS; do
-    if grep -E "^(ERROR)|(Warning) \($c\):" $LOG > /dev/null; then
+    if grep -E "(ERROR|Warning) \($c\):" $LOG > /dev/null; then
 	FAIL "Incorrectly triggered check \"$c\""
     fi
 done
diff -Nru device-tree-compiler-1.4.5/tests/dumptrees.c device-tree-compiler-1.4.7/tests/dumptrees.c
--- device-tree-compiler-1.4.5/tests/dumptrees.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/dumptrees.c	2018-07-23 03:00:50.000000000 +0000
@@ -33,10 +33,12 @@
 	void *blob;
 	const char *filename;
 } trees[] = {
-#define TREE(name)	{ &_##name, #name ".dtb" }
+#define TREE(name)	{ &name, #name ".dtb" }
 	TREE(test_tree1),
 	TREE(bad_node_char), TREE(bad_node_format), TREE(bad_prop_char),
 	TREE(ovf_size_strings),
+	TREE(truncated_property), TREE(truncated_string),
+	TREE(truncated_memrsv),
 };
 
 #define NUM_TREES	(sizeof(trees) / sizeof(trees[0]))
diff -Nru device-tree-compiler-1.4.5/tests/get_path.c device-tree-compiler-1.4.7/tests/get_path.c
--- device-tree-compiler-1.4.5/tests/get_path.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/get_path.c	2018-07-23 03:00:50.000000000 +0000
@@ -42,7 +42,8 @@
 	memset(buf, POISON, sizeof(buf)); /* poison the buffer */
 
 	len = fdt_get_path(fdt, offset, buf, buflen);
-	verbose_printf("get_path() %s -> %d -> %s\n", path, offset, buf);
+	verbose_printf("get_path() %s -> %d -> %s\n", path, offset,
+		       len >= 0 ? buf : "<error>");
 
 	if (buflen <= pathlen) {
 		if (len != -FDT_ERR_NOSPACE)
diff -Nru device-tree-compiler-1.4.5/tests/.gitignore device-tree-compiler-1.4.7/tests/.gitignore
--- device-tree-compiler-1.4.5/tests/.gitignore	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/.gitignore	2018-07-23 03:00:50.000000000 +0000
@@ -4,10 +4,13 @@
 tmp.*
 /add_subnode_with_nops
 /addr_size_cells
+/addr_size_cells2
 /appendprop[12]
 /asm_tree_dump
 /boot-cpuid
 /char_literal
+/check_full
+/check_header
 /check_path
 /del_node
 /del_property
@@ -58,6 +61,9 @@
 /subnode_offset
 /supernode_atdepth_offset
 /sw_tree1
+/sw_states
 /truncated_property
+/truncated_string
+/truncated_memrsv
 /utilfdt_test
 /value-labels
diff -Nru device-tree-compiler-1.4.5/tests/Makefile.tests device-tree-compiler-1.4.7/tests/Makefile.tests
--- device-tree-compiler-1.4.5/tests/Makefile.tests	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/Makefile.tests	2018-07-23 03:00:50.000000000 +0000
@@ -9,9 +9,10 @@
 	sized_cells \
 	notfound \
 	addr_size_cells \
+	addr_size_cells2 \
 	stringlist \
 	setprop_inplace nop_property nop_node \
-	sw_tree1 \
+	sw_tree1 sw_states \
 	move_and_save mangle-layout nopulate \
 	open_pack rw_tree1 set_name setprop del_property del_node \
 	appendprop1 appendprop2 propname_escapes \
@@ -26,10 +27,10 @@
 	property_iterate \
 	subnode_iterate \
 	overlay overlay_bad_fixup \
-	check_path
+	check_path check_header check_full
 LIB_TESTS = $(LIB_TESTS_L:%=$(TESTS_PREFIX)%)
 
-LIBTREE_TESTS_L = truncated_property
+LIBTREE_TESTS_L = truncated_property truncated_string truncated_memrsv
 LIBTREE_TESTS = $(LIBTREE_TESTS_L:%=$(TESTS_PREFIX)%)
 
 DL_LIB_TESTS_L = asm_tree_dump value-labels
@@ -54,9 +55,12 @@
 
 $(LIB_TESTS): %: $(TESTS_PREFIX)testutils.o util.o $(LIBFDT_archive)
 
+# Not necessary on all platforms; allow -ldl to be excluded instead of forcing
+# other platforms to patch it out.
+LIBDL = -ldl
 $(DL_LIB_TESTS): %: %.o $(TESTS_PREFIX)testutils.o util.o $(LIBFDT_archive)
 	@$(VECHO) LD [libdl] $@
-	$(LINK.c) -o $@ $^ -ldl
+	$(LINK.c) -o $@ $^ $(LIBDL)
 
 $(LIBTREE_TESTS): %: $(TESTS_PREFIX)testutils.o $(TESTS_PREFIX)trees.o \
 		util.o $(LIBFDT_archive)
diff -Nru device-tree-compiler-1.4.5/tests/mangle-layout.c device-tree-compiler-1.4.7/tests/mangle-layout.c
--- device-tree-compiler-1.4.5/tests/mangle-layout.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/mangle-layout.c	2018-07-23 03:00:50.000000000 +0000
@@ -44,13 +44,9 @@
 
 static void new_header(struct bufstate *buf, int version, const void *fdt)
 {
-	int hdrsize;
+	int hdrsize = fdt_header_size_(version);
 
-	if (version == 16)
-		hdrsize = FDT_V16_SIZE;
-	else if (version == 17)
-		hdrsize = FDT_V17_SIZE;
-	else
+	if ((version != 16) && (version != 17))
 		CONFIG("Bad version %d", version);
 
 	expand_buf(buf, hdrsize);
diff -Nru device-tree-compiler-1.4.5/tests/mangle-layout.supp device-tree-compiler-1.4.7/tests/mangle-layout.supp
--- device-tree-compiler-1.4.5/tests/mangle-layout.supp	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/mangle-layout.supp	1970-01-01 00:00:00.000000000 +0000
@@ -1,7 +0,0 @@
-{
-   uninitialized alignment gaps can be dumped to output
-   Memcheck:Param
-   write(buf)
-   obj:/lib/ld-*.so
-   fun:main
-}
diff -Nru device-tree-compiler-1.4.5/tests/node_check_compatible.c device-tree-compiler-1.4.7/tests/node_check_compatible.c
--- device-tree-compiler-1.4.5/tests/node_check_compatible.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/node_check_compatible.c	2018-07-23 03:00:50.000000000 +0000
@@ -45,6 +45,23 @@
 		FAIL("%s is not compatible with \"%s\"", path, compat);
 }
 
+static void check_not_compatible(const void *fdt, const char *path,
+				 const char *compat)
+{
+	int offset, err;
+
+	offset = fdt_path_offset(fdt, path);
+	if (offset < 0)
+		FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(offset));
+
+	err = fdt_node_check_compatible(fdt, offset, compat);
+	if (err < 0)
+		FAIL("fdt_node_check_compatible(%s): %s", path,
+		     fdt_strerror(err));
+	if (err == 0)
+		FAIL("%s is incorrectly compatible with \"%s\"", path, compat);
+}
+
 int main(int argc, char *argv[])
 {
 	void *fdt;
@@ -55,8 +72,10 @@
 	check_compatible(fdt, "/", "test_tree1");
 	check_compatible(fdt, "/subnode@1/subsubnode", "subsubnode1");
 	check_compatible(fdt, "/subnode@1/subsubnode", "subsubnode");
+	check_not_compatible(fdt, "/subnode@1/subsubnode", "subsubnode2");
 	check_compatible(fdt, "/subnode@2/subsubnode", "subsubnode2");
 	check_compatible(fdt, "/subnode@2/subsubnode", "subsubnode");
+	check_not_compatible(fdt, "/subnode@2/subsubnode", "subsubnode1");
 
 	PASS();
 }
diff -Nru device-tree-compiler-1.4.5/tests/omit-no-ref.dts device-tree-compiler-1.4.7/tests/omit-no-ref.dts
--- device-tree-compiler-1.4.5/tests/omit-no-ref.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/omit-no-ref.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,26 @@
+/dts-v1/;
+
+/ {
+	test-phandle = <&node3>;
+	test-path = &node4;
+
+	/omit-if-no-ref/ node1: node1 {
+		bar = <0xdeadbeef>;
+	};
+
+	node2: node2 {
+		foo = <0x42>;
+	};
+
+	node3: node3 {
+		test = "test";
+	};
+
+	node4: node4 {
+		test;
+	};
+};
+
+/omit-if-no-ref/ &node2;
+/omit-if-no-ref/ &node3;
+/omit-if-no-ref/ &node4;
diff -Nru device-tree-compiler-1.4.5/tests/open_pack.supp device-tree-compiler-1.4.7/tests/open_pack.supp
--- device-tree-compiler-1.4.5/tests/open_pack.supp	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/open_pack.supp	1970-01-01 00:00:00.000000000 +0000
@@ -1,7 +0,0 @@
-{
-   opened blob dumps uninitialized data
-   Memcheck:Param
-   write(buf)
-   obj:/lib/ld-*.so
-   fun:main
-}
diff -Nru device-tree-compiler-1.4.5/tests/overlay_overlay_bypath.dts device-tree-compiler-1.4.7/tests/overlay_overlay_bypath.dts
--- device-tree-compiler-1.4.5/tests/overlay_overlay_bypath.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/overlay_overlay_bypath.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2016 NextThing Co
+ * Copyright (c) 2016 Free Electrons
+ * Copyright (c) 2016 Konsulko Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/dts-v1/;
+/plugin/;
+
+/* Test that we can change an int by another */
+&{/test-node} {
+	test-int-property = <43>;
+};
+
+/* Test that we can replace a string by a longer one */
+&{/test-node} {
+	test-str-property = "foobar";
+};
+
+/* Test that we add a new property */
+&{/test-node} {
+	test-str-property-2 = "foobar2";
+};
+
+/* Test that we add a new node (by phandle) */
+&{/test-node} {
+	new-node {
+		new-property;
+	};
+};
+
+&{/} {
+	local: new-local-node {
+		new-property;
+	};
+};
+
+&{/} {
+	test-several-phandle = <&local>, <&local>;
+};
+
+&{/test-node} {
+	sub-test-node {
+		new-sub-test-property;
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/overlay_overlay.dts device-tree-compiler-1.4.7/tests/overlay_overlay.dts
--- device-tree-compiler-1.4.5/tests/overlay_overlay.dts	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/overlay_overlay.dts	2018-07-23 03:00:50.000000000 +0000
@@ -9,78 +9,44 @@
 /dts-v1/;
 /plugin/;
 
-/ {
-	/* Test that we can change an int by another */
-	fragment@0 {
-		target = <&test>;
-
-		__overlay__ {
-			test-int-property = <43>;
-		};
-	};
-
-	/* Test that we can replace a string by a longer one */
-	fragment@1 {
-		target = <&test>;
-
-		__overlay__ {
-			test-str-property = "foobar";
-		};
-	};
-
-	/* Test that we add a new property */
-	fragment@2 {
-		target = <&test>;
-
-		__overlay__ {
-			test-str-property-2 = "foobar2";
-		};
-	};
+/* Test that we can change an int by another */
+&test {
+	test-int-property = <43>;
+};
 
-	/* Test that we add a new node (by phandle) */
-	fragment@3 {
-		target = <&test>;
-
-		__overlay__ {
-			new-node {
-				new-property;
-			};
-		};
-	};
+/* Test that we can replace a string by a longer one */
+&test {
+	test-str-property = "foobar";
+};
 
-	fragment@5 {
-		target = <&test>;
+/* Test that we add a new property */
+&test {
+	test-str-property-2 = "foobar2";
+};
 
-		__overlay__ {
-			local: new-local-node {
-				new-property;
-			};
-		};
+/* Test that we add a new node (by phandle) */
+&test {
+	new-node {
+		new-property;
 	};
+};
 
-	fragment@6 {
-		target = <&test>;
-
-		__overlay__ {
-			test-phandle = <&test>, <&local>;
-		};
+&test {
+	local: new-local-node {
+		new-property;
 	};
+};
 
-	fragment@7 {
-		target = <&test>;
-
-		__overlay__ {
-			test-several-phandle = <&local>, <&local>;
-		};
-	};
+&test {
+	test-phandle = <&test>, <&local>;
+};
 
-	fragment@8 {
-		target = <&test>;
+&test {
+	test-several-phandle = <&local>, <&local>;
+};
 
-		__overlay__ {
-			sub-test-node {
-				new-sub-test-property;
-			};
-		};
+&test {
+	sub-test-node {
+		new-sub-test-property;
 	};
 };
diff -Nru device-tree-compiler-1.4.5/tests/overlay_overlay_manual_fixups.dts device-tree-compiler-1.4.7/tests/overlay_overlay_manual_fixups.dts
--- device-tree-compiler-1.4.5/tests/overlay_overlay_manual_fixups.dts	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/overlay_overlay_manual_fixups.dts	2018-07-23 03:00:50.000000000 +0000
@@ -50,7 +50,7 @@
 		};
 	};
 
-	fragment@5 {
+	fragment@4 {
 		target = <0xffffffff /*&test*/>;
 
 		__overlay__ {
@@ -60,7 +60,7 @@
 		};
 	};
 
-	fragment@6 {
+	fragment@5 {
 		target = <0xffffffff /*&test*/>;
 
 		__overlay__ {
@@ -68,7 +68,7 @@
 		};
 	};
 
-	fragment@7 {
+	fragment@6 {
 		target = <0xffffffff /*&test*/>;
 
 		__overlay__ {
@@ -76,7 +76,7 @@
 		};
 	};
 
-	fragment@8 {
+	fragment@7 {
 		target = <0xffffffff /*&test*/>;
 
 		__overlay__ {
@@ -86,27 +86,27 @@
 		};
 	};
 
+	__fixups__ {
+		test = "/fragment@0:target:0",
+		       "/fragment@1:target:0",
+		       "/fragment@2:target:0",
+		       "/fragment@3:target:0",
+		       "/fragment@4:target:0",
+		       "/fragment@5:target:0",
+		       "/fragment@5/__overlay__:test-phandle:0",
+		       "/fragment@6:target:0",
+		       "/fragment@7:target:0";
+	};
 	__local_fixups__ {
-		fragment@6 {
+		fragment@5 {
 			__overlay__ {
 				test-phandle = <4>;
 			};
 		};
-		fragment@7 {
+		fragment@6 {
 			__overlay__ {
 				test-several-phandle = <0 4>;
 			};
 		};
 	};
-	__fixups__ {
-		test = "/fragment@0:target:0",
-		       "/fragment@1:target:0",
-		       "/fragment@2:target:0",
-		       "/fragment@3:target:0",
-		       "/fragment@5:target:0",
-		       "/fragment@6:target:0",
-		       "/fragment@6/__overlay__:test-phandle:0",
-		       "/fragment@7:target:0",
-		       "/fragment@8:target:0";
-	};
 };
diff -Nru device-tree-compiler-1.4.5/tests/overlay_overlay_nosugar.dts device-tree-compiler-1.4.7/tests/overlay_overlay_nosugar.dts
--- device-tree-compiler-1.4.5/tests/overlay_overlay_nosugar.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/overlay_overlay_nosugar.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2016 NextThing Co
+ * Copyright (c) 2016 Free Electrons
+ * Copyright (c) 2016 Konsulko Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	/* Test that we can change an int by another */
+	fragment@0 {
+		target = <&test>;
+
+		__overlay__ {
+			test-int-property = <43>;
+		};
+	};
+
+	/* Test that we can replace a string by a longer one */
+	fragment@1 {
+		target = <&test>;
+
+		__overlay__ {
+			test-str-property = "foobar";
+		};
+	};
+
+	/* Test that we add a new property */
+	fragment@2 {
+		target = <&test>;
+
+		__overlay__ {
+			test-str-property-2 = "foobar2";
+		};
+	};
+
+	/* Test that we add a new node (by phandle) */
+	fragment@3 {
+		target = <&test>;
+
+		__overlay__ {
+			new-node {
+				new-property;
+			};
+		};
+	};
+
+	fragment@5 {
+		target = <&test>;
+
+		__overlay__ {
+			local: new-local-node {
+				new-property;
+			};
+		};
+	};
+
+	fragment@6 {
+		target = <&test>;
+
+		__overlay__ {
+			test-phandle = <&test>, <&local>;
+		};
+	};
+
+	fragment@7 {
+		target = <&test>;
+
+		__overlay__ {
+			test-several-phandle = <&local>, <&local>;
+		};
+	};
+
+	fragment@8 {
+		target = <&test>;
+
+		__overlay__ {
+			sub-test-node {
+				new-sub-test-property;
+			};
+		};
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/pci-bridge-bad1.dts device-tree-compiler-1.4.7/tests/pci-bridge-bad1.dts
--- device-tree-compiler-1.4.5/tests/pci-bridge-bad1.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/pci-bridge-bad1.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,16 @@
+/dts-v1/;
+
+/ {
+	compatible = "example,pci-bridge-ok";
+	#address-cells = < 2 >;
+	#size-cells = < 2 >;
+	abadname@0 {
+		device_type = "pci";
+		compatible = "example,pci-bridge";
+		#address-cells = < 3 >;
+		#size-cells = < 2 >;
+		reg = <0 0 0 0x1000>;
+		bus-range = <0 0xff>;
+		ranges = <0 0 0 0 0 0 0x10000>;
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/pci-bridge-bad2.dts device-tree-compiler-1.4.7/tests/pci-bridge-bad2.dts
--- device-tree-compiler-1.4.5/tests/pci-bridge-bad2.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/pci-bridge-bad2.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,16 @@
+/dts-v1/;
+
+/ {
+	compatible = "example,pci-bridge-ok";
+	#address-cells = < 2 >;
+	#size-cells = < 2 >;
+	p@0 {
+		device_type = "pci";
+		compatible = "example,pci-bridge";
+		#address-cells = < 3 >;
+		#size-cells = < 2 >;
+		reg = <0 0 0 0x1000>;
+		bus-range = <0 0xff>;
+		ranges = <0 0 0 0 0 0 0x10000>;
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/pci-bridge-ok.dts device-tree-compiler-1.4.7/tests/pci-bridge-ok.dts
--- device-tree-compiler-1.4.5/tests/pci-bridge-ok.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/pci-bridge-ok.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,25 @@
+/dts-v1/;
+
+/ {
+	compatible = "example,pci-bridge-ok";
+	#address-cells = < 2 >;
+	#size-cells = < 2 >;
+	pci@0 {
+		device_type = "pci";
+		compatible = "example,pci-bridge";
+		#address-cells = < 3 >;
+		#size-cells = < 2 >;
+		reg = <0 0 0 0x1000>;
+		bus-range = <0 0xff>;
+		ranges = <0 0 0 0 0 0 0x10000>;
+	};
+	pcie@10000000000 {
+		device_type = "pci";
+		compatible = "example,pcie-bridge";
+		#address-cells = < 3 >;
+		#size-cells = < 2 >;
+		reg = <0x10 0x00000000 0 0x1000>;
+		bus-range = <0 0xff>;
+		ranges = <0 0 0 0 0 0 0x10000>;
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/pylibfdt_tests.py device-tree-compiler-1.4.7/tests/pylibfdt_tests.py
--- device-tree-compiler-1.4.5/tests/pylibfdt_tests.py	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/pylibfdt_tests.py	2018-07-23 03:00:50.000000000 +0000
@@ -49,13 +49,43 @@
 #     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 
+import struct
 import sys
 import types
 import unittest
 
 sys.path.insert(0, '../pylibfdt')
 import libfdt
-from libfdt import FdtException, QUIET_NOTFOUND, QUIET_ALL
+from libfdt import Fdt, FdtSw, FdtException, QUIET_NOTFOUND, QUIET_ALL
+
+TEST_ADDR_1H = 0xdeadbeef
+TEST_ADDR_1L = 0x00000000
+TEST_ADDR_1 = (TEST_ADDR_1H << 32) | TEST_ADDR_1L
+TEST_ADDR_1 = 0x8000000000000000
+TEST_SIZE_1H = 0x00000000
+TEST_SIZE_1L = 0x00100000
+TEST_SIZE_1 = (TEST_SIZE_1H << 32) | TEST_SIZE_1L
+TEST_ADDR_2H = 0
+TEST_ADDR_2L = 123456789
+TEST_ADDR_2 = (TEST_ADDR_2H << 32) | TEST_ADDR_2L
+TEST_SIZE_2H = 0
+TEST_SIZE_2L = 010000
+TEST_SIZE_2 = (TEST_SIZE_2H << 32) | TEST_SIZE_2L
+
+TEST_VALUE_1 = 0xdeadbeef
+TEST_VALUE_2 = 123456789
+
+TEST_VALUE64_1H = 0xdeadbeef
+TEST_VALUE64_1L = 0x01abcdef
+TEST_VALUE64_1 = (TEST_VALUE64_1H << 32) | TEST_VALUE64_1L
+
+PHANDLE_1 = 0x2000
+PHANDLE_2 = 0x2001
+
+TEST_STRING_1 = 'hello world'
+TEST_STRING_2 = 'hi world'
+TEST_STRING_3 = u'unicode ' + unichr(467)
+
 
 def get_err(err_code):
     """Convert an error code into an error message
@@ -79,8 +109,8 @@
     """
     return libfdt.Fdt(open(fname).read())
 
-class PyLibfdtTests(unittest.TestCase):
-    """Test class for pylibfdt
+class PyLibfdtBasicTests(unittest.TestCase):
+    """Test class for basic pylibfdt access functions
 
     Properties:
         fdt: Device tree file used for testing
@@ -89,6 +119,7 @@
     def setUp(self):
         """Read in the device tree we use for testing"""
         self.fdt = _ReadFdt('test_tree1.dtb')
+        self.fdt2 = _ReadFdt('test_props.dtb')
 
     def GetPropList(self, node_path):
         """Read a list of properties from a node
@@ -190,7 +221,7 @@
         poffset = self.fdt.first_property_offset(root)
         prop = self.fdt.get_property_by_offset(poffset)
         self.assertEquals(prop.name, 'compatible')
-        self.assertEquals(prop.value, 'test_tree1\0')
+        self.assertEquals(prop, 'test_tree1\0')
 
         with self.assertRaises(FdtException) as e:
             self.fdt.get_property_by_offset(-2)
@@ -220,6 +251,24 @@
         self.assertEquals(libfdt.strerror(-libfdt.NOTFOUND),
                           'FDT_ERR_NOTFOUND')
 
+    def testNextNodeOffset(self):
+        """Check that we can walk through nodes"""
+        node_list = []
+        node = 0
+        depth = 0
+        while depth >= 0:
+            node_list.append([depth, self.fdt.get_name(node)])
+            node, depth = self.fdt.next_node(node, depth, (libfdt.BADOFFSET,))
+        self.assertEquals(node_list, [
+            [0, ''],
+            [1, 'subnode@1'],
+            [2, 'subsubnode'],
+            [2, 'ss1'],
+            [1, 'subnode@2'],
+            [2, 'subsubnode@0'],
+            [2, 'ss2'],
+            ])
+
     def testFirstNextSubnodeOffset(self):
         """Check that we can walk through subnodes"""
         node_list = []
@@ -257,8 +306,16 @@
 
     def testHeader(self):
         """Test that we can access the header values"""
+        self.assertEquals(self.fdt.magic(), 0xd00dfeed)
         self.assertEquals(self.fdt.totalsize(), len(self.fdt._fdt))
         self.assertEquals(self.fdt.off_dt_struct(), 88)
+        self.assertEquals(self.fdt.off_dt_strings(), 652)
+        self.assertEquals(self.fdt.off_mem_rsvmap(), 40)
+        self.assertEquals(self.fdt.version(), 17)
+        self.assertEquals(self.fdt.last_comp_version(), 16)
+        self.assertEquals(self.fdt.boot_cpuid_phys(), 0)
+        self.assertEquals(self.fdt.size_dt_strings(), 105)
+        self.assertEquals(self.fdt.size_dt_struct(), 564)
 
     def testPack(self):
         """Test that we can pack the tree after deleting something"""
@@ -268,6 +325,7 @@
         self.assertEquals(orig_size, self.fdt.totalsize())
         self.assertEquals(self.fdt.pack(), 0)
         self.assertTrue(self.fdt.totalsize() < orig_size)
+        self.assertEquals(self.fdt.totalsize(), len(self.fdt.as_bytearray()))
 
     def testBadPropertyOffset(self):
         """Test that bad property offsets are detected"""
@@ -329,6 +387,208 @@
         node2 = self.fdt.path_offset('/subnode@2/subsubnode@0')
         self.assertEquals(node2, self.fdt.node_offset_by_phandle(0x2001))
 
+    def get_prop(self, name):
+        return self.fdt2.getprop(0, name)
+
+    def testGetIntProperties(self):
+        """Test that we can access properties as integers"""
+        self.assertEquals(0xdeadbeef, self.get_prop("prop-hex32").as_uint32())
+        self.assertEquals(123, self.get_prop("prop-uint32").as_uint32())
+        self.assertEquals(-2, self.get_prop("prop-int32").as_int32())
+        self.assertEquals(9223372036854775807,
+                          self.get_prop("prop-uint64").as_uint64())
+        self.assertEquals(-2, self.get_prop("prop-int64").as_int64())
+
+    def testReserveMap(self):
+        """Test that we can access the memory reserve map"""
+        self.assertEquals(2, self.fdt.num_mem_rsv())
+        self.assertEquals([ 0xdeadbeef00000000, 0x100000],
+                          self.fdt.get_mem_rsv(0))
+        self.assertEquals([123456789, 010000], self.fdt.get_mem_rsv(1))
+
+    def testEmpty(self):
+        """Test that we can create an empty tree"""
+        self.assertEquals(-libfdt.NOSPACE,
+                          Fdt.create_empty_tree(1, (libfdt.NOSPACE,)))
+        fdt = Fdt.create_empty_tree(128)
+        self.assertEquals(128, fdt.totalsize())
+
+    def testOpenInto(self):
+        """Test that we can resize a tree"""
+        fdt = Fdt.create_empty_tree(128)
+        self.assertEquals(128, fdt.totalsize())
+        fdt.resize(256)
+        self.assertEquals(256, fdt.totalsize())
+        fdt.pack()
+        self.assertTrue(fdt.totalsize() < 128)
+
+    def testSetProp(self):
+        """Test that we can update and create properties"""
+        node = self.fdt.path_offset('/subnode@1')
+        self.fdt.setprop(node, 'compatible', TEST_STRING_1)
+        self.assertEquals(TEST_STRING_1, self.fdt.getprop(node, 'compatible'))
+
+        # Check that this property is missing, and that we don't have space to
+        # add it
+        self.assertEquals(-libfdt.NOTFOUND,
+                          self.fdt.getprop(node, 'missing', QUIET_NOTFOUND))
+        self.assertEquals(-libfdt.NOSPACE,
+                          self.fdt.setprop(node, 'missing', TEST_STRING_1,
+                                           quiet=(libfdt.NOSPACE,)))
+
+        # Expand the device tree so we now have room
+        self.fdt.resize(self.fdt.totalsize() + 50)
+        self.fdt.setprop(node, 'missing', TEST_STRING_1)
+        self.assertEquals(TEST_STRING_1, self.fdt.getprop(node, 'missing'))
+
+    def testSetPropU32(self):
+        """Test that we can update and create integer properties"""
+        node = 0
+        prop = 'prop-int'
+        self.fdt.setprop_u32(node, prop, TEST_VALUE_1)
+        self.assertEquals(struct.pack('>I', TEST_VALUE_1),
+                          self.fdt.getprop(node, prop))
+
+    def testSetPropU64(self):
+        """Test that we can update and create integer properties"""
+        node = 0
+        prop = 'prop-int64'
+        self.fdt.setprop_u64(node, prop, TEST_VALUE64_1)
+        self.assertEquals(struct.pack('>Q', TEST_VALUE64_1),
+                          self.fdt.getprop(node, prop))
+
+    def testSetPropStr(self):
+        """Test that we can set a property to a particular string"""
+        node = 0
+        prop = 'prop-str'
+        self.assertEquals(TEST_STRING_1, self.fdt.getprop(node, prop).as_str())
+        self.fdt.setprop_str(node, prop, TEST_STRING_2)
+        self.assertEquals(TEST_STRING_2, self.fdt.getprop(node, prop).as_str())
+        with self.assertRaises(ValueError) as e:
+            self.fdt.getprop(node, 'prop-int').as_str()
+        self.assertIn('lacks nul termination', str(e.exception))
+
+        node2 = self.fdt.path_offset('/subnode@1/subsubnode')
+        with self.assertRaises(ValueError) as e:
+            self.fdt.getprop(node2, 'compatible').as_str()
+        self.assertIn('embedded nul', str(e.exception))
+
+        # Expand the device tree so we now have room
+        self.fdt.resize(self.fdt.totalsize() + 50)
+        prop = 'prop-unicode'
+        self.fdt.setprop_str(node, prop, TEST_STRING_3)
+        self.assertEquals(TEST_STRING_3,
+                          self.fdt.getprop(node, prop).as_str())
+
+    def testSetName(self):
+        """Test that we can update a node name"""
+        node = self.fdt.path_offset('/subnode@1')
+        old_val = self.fdt.get_name(node)
+        self.fdt.set_name(node, 'test')
+        self.assertEquals('test', self.fdt.get_name(node))
+
+        with self.assertRaises(ValueError) as e:
+            self.fdt.set_name(node, 'some\0name')
+        self.assertIn('embedded nul', str(e.exception))
+
+        with self.assertRaises(ValueError) as e:
+            self.fdt.set_name(node, 'name\0')
+        self.assertIn('embedded nul', str(e.exception))
+
+
+class PyLibfdtSwTests(unittest.TestCase):
+    """Test class for pylibfdt sequential-write DT creation
+    """
+    def assertOk(self, err_code):
+        self.assertEquals(0, err_code)
+
+    def testCreate(self):
+        # First check the minimum size and also the FdtSw() constructor
+        with self.assertRaisesRegexp(FdtException, get_err(libfdt.NOSPACE)):
+            self.assertEquals(-libfdt.NOSPACE, FdtSw(3))
+
+        sw = FdtSw()
+        sw.add_reservemap_entry(TEST_ADDR_1, TEST_SIZE_1)
+        sw.add_reservemap_entry(TEST_ADDR_2, TEST_SIZE_2)
+        sw.finish_reservemap()
+
+        sw.begin_node('')
+        sw.property_string('compatible', 'test_tree1')
+        sw.property_u32('prop-int', TEST_VALUE_1)
+
+        sw.property_u32('prop-int', TEST_VALUE_1)
+        sw.property_u64('prop-int64', TEST_VALUE64_1)
+        sw.property_string('prop-str', TEST_STRING_1)
+        sw.property_u32('#address-cells', 1)
+        sw.property_u32('#size-cells', 0)
+
+        sw.begin_node('subnode@1')
+        sw.property_string('compatible', 'subnode1')
+        sw.property_u32('reg', 1)
+        sw.property_cell('prop-int', TEST_VALUE_1)
+        sw.begin_node('subsubnode')
+        sw.property('compatible', 'subsubnode1\0subsubnode')
+        sw.property_cell('prop-int', TEST_VALUE_1)
+        sw.end_node()
+        sw.begin_node('ss1')
+        sw.end_node()
+        sw.end_node()
+
+        for i in range(2, 11):
+            with sw.add_node('subnode@%d' % i):
+                sw.property_u32('reg', 2)
+                sw.property_cell('linux,phandle', PHANDLE_1)
+                sw.property_cell('prop-int', TEST_VALUE_2)
+                sw.property_u32('#address-cells', 1)
+                sw.property_u32('#size-cells', 0)
+                with sw.add_node('subsubnode@0'):
+                    sw.property_u32('reg', 0)
+                    sw.property_cell('phandle', PHANDLE_2)
+                    sw.property('compatible', 'subsubnode2\0subsubnode')
+                    sw.property_cell('prop-int', TEST_VALUE_2)
+                with sw.add_node('ss2'):
+                    pass
+        sw.end_node()
+
+        fdt = sw.as_fdt()
+        self.assertEqual(2, fdt.num_mem_rsv())
+        self.assertEqual([TEST_ADDR_1, TEST_SIZE_1], fdt.get_mem_rsv(0))
+
+        # Make sure we can add a few more things
+        with sw.add_node('another'):
+            sw.property_u32('reg', 3)
+
+        # Make sure we can read from the tree too
+        node = sw.path_offset('/subnode@1')
+        self.assertEqual('subnode1' + chr(0), sw.getprop(node, 'compatible'))
+
+        # Make sure we did at least two resizes
+        self.assertTrue(len(fdt.as_bytearray()) > FdtSw.INC_SIZE * 2)
+
+
+class PyLibfdtRoTests(unittest.TestCase):
+    """Test class for read-only pylibfdt access functions
+
+    This just tests a few simple cases. Most of the tests are in
+    PyLibfdtBasicTests.
+
+    Properties:
+        fdt: Device tree file used for testing
+    """
+
+    def setUp(self):
+        """Read in the device tree we use for testing"""
+        self.fdt = libfdt.FdtRo(open('test_tree1.dtb').read())
+
+    def testAccess(self):
+        """Basic sanity check for the FdtRo class"""
+        node = self.fdt.path_offset('/subnode@1')
+        self.assertEqual('subnode1' + chr(0),
+                         self.fdt.getprop(node, 'compatible'))
+        node = self.fdt.first_subnode(node)
+        self.assertEqual('this is a placeholder string\0string2\0',
+                         self.fdt.getprop(node, 'placeholder'))
+
 
 if __name__ == "__main__":
     unittest.main()
diff -Nru device-tree-compiler-1.4.5/tests/run_tests.sh device-tree-compiler-1.4.7/tests/run_tests.sh
--- device-tree-compiler-1.4.5/tests/run_tests.sh	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/run_tests.sh	2018-07-23 03:00:50.000000000 +0000
@@ -6,6 +6,18 @@
     CC=gcc
 fi
 
+# stat differs between platforms
+if [ -z "$STATSZ" ]; then
+	stat --version 2>/dev/null | grep -q 'GNU'
+	GNUSTAT=$?
+	if [ "$GNUSTAT" -ne 0 ]; then
+		# Assume BSD stat if we can't detect as GNU stat
+		STATSZ="stat -f %Uz"
+	else
+		STATSZ="stat -c %s"
+	fi
+fi
+
 export QUIET_TEST=1
 STOP_ON_FAIL=0
 
@@ -114,7 +126,7 @@
 # $2: align base
 check_align () {
     shorten_echo "check_align $@:	"
-    local size=$(stat -c %s "$1")
+    local size=$($STATSZ "$1")
     local align="$2"
     (
 	if [ $(($size % $align)) -eq 0 ] ;then
@@ -205,6 +217,12 @@
 
     run_test overlay overlay_base_manual_symbols.test.dtb overlay_overlay_manual_fixups.test.dtb
 
+    # test simplified plugin syntax
+    run_dtc_test -@ -I dts -O dtb -o overlay_overlay_simple.dtb overlay_overlay_simple.dts
+
+    # verify non-generation of local fixups
+    run_test check_path overlay_overlay_simple.dtb not-exists "/__local_fixups__"
+
     # Bad fixup tests
     for test in $BAD_FIXUP_TREES; do
 	tree="overlay_bad_fixup_$test"
@@ -221,12 +239,37 @@
     run_test check_path overlay_base.test.dtb not-exists "/__fixups__"
     run_test check_path overlay_base.test.dtb not-exists "/__local_fixups__"
 
+    # With syntactic sugar
     run_dtc_test -I dts -O dtb -o overlay_overlay.test.dtb overlay_overlay.dts
     run_test check_path overlay_overlay.test.dtb not-exists "/__symbols__"
     run_test check_path overlay_overlay.test.dtb exists "/__fixups__"
     run_test check_path overlay_overlay.test.dtb exists "/__local_fixups__"
 
+    # Without syntactic sugar
+    run_dtc_test -I dts -O dtb -o overlay_overlay_nosugar.test.dtb overlay_overlay.dts
+    run_test check_path overlay_overlay_nosugar.test.dtb not-exists "/__symbols__"
+    run_test check_path overlay_overlay_nosugar.test.dtb exists "/__fixups__"
+    run_test check_path overlay_overlay_nosugar.test.dtb exists "/__local_fixups__"
+
+    # Using target-path
+    run_dtc_test -I dts -O dtb -o overlay_overlay_bypath.test.dtb overlay_overlay_bypath.dts
+    run_test check_path overlay_overlay_bypath.test.dtb not-exists "/__symbols__"
+    run_test check_path overlay_overlay_bypath.test.dtb not-exists "/__fixups__"
+    run_test check_path overlay_overlay_bypath.test.dtb exists "/__local_fixups__"
+
+    # Check building works the same as manual constructions
+    run_test dtbs_equal_ordered overlay_overlay.test.dtb overlay_overlay_nosugar.test.dtb
+
+    run_dtc_test -I dts -O dtb -o overlay_overlay_manual_fixups.test.dtb overlay_overlay_manual_fixups.dts
+    run_test dtbs_equal_ordered overlay_overlay.test.dtb overlay_overlay_manual_fixups.test.dtb
+
+    run_dtc_test -I dts -O dtb -o overlay_overlay_no_fixups.test.dtb overlay_overlay_no_fixups.dts
+    run_test dtbs_equal_ordered overlay_overlay_bypath.test.dtb overlay_overlay_no_fixups.test.dtb
+
+    # Check we can actually apply the result
+    run_dtc_test -I dts -O dtb -o overlay_base_no_symbols.test.dtb overlay_base.dts
     run_test overlay overlay_base.test.dtb overlay_overlay.test.dtb
+    run_test overlay overlay_base_no_symbols.test.dtb overlay_overlay_bypath.test.dtb
 
     # test plugin source to dtb and back
     run_dtc_test -I dtb -O dts -o overlay_overlay_decompile.test.dts overlay_overlay.test.dtb
@@ -293,6 +336,8 @@
 
     run_dtc_test -I dts -O dtb -o addresses.test.dtb addresses.dts
     run_test addr_size_cells addresses.test.dtb
+    run_dtc_test -I dts -O dtb -o addresses2.test.dtb empty.dts
+    run_test addr_size_cells2 addresses2.test.dtb
 
     run_dtc_test -I dts -O dtb -o stringlist.test.dtb stringlist.dts
     run_test stringlist stringlist.test.dtb
@@ -302,9 +347,10 @@
     tree1_tests sw_tree1.test.dtb
     tree1_tests unfinished_tree1.test.dtb
     run_test dtbs_equal_ordered test_tree1.dtb sw_tree1.test.dtb
+    run_test sw_states
 
     # Resizing tests
-    for mode in resize realloc; do
+    for mode in resize realloc newalloc; do
 	run_test sw_tree1 $mode
 	tree1_tests sw_tree1.test.dtb
 	tree1_tests unfinished_tree1.test.dtb
@@ -371,6 +417,8 @@
 
     # Tests for behaviour on various sorts of corrupted trees
     run_test truncated_property
+    run_test truncated_string
+    run_test truncated_memrsv
 
     # Check aliases support in fdt_path_offset
     run_dtc_test -I dts -O dtb -o aliases.dtb aliases.dts
@@ -397,6 +445,17 @@
     run_wrap_error_test $DTC nul-in-line-info2.dts
 
     run_wrap_error_test $DTC -I dtb -O dts -o /dev/null ovf_size_strings.dtb
+
+    run_test check_header test_tree1.dtb
+
+    # check full tests
+    for good in test_tree1.dtb; do
+	run_test check_full $good
+    done
+    for bad in truncated_property.dtb truncated_string.dtb \
+				      truncated_memrsv.dtb; do
+	run_test check_full -n $bad
+    done
 }
 
 dtc_tests () {
@@ -494,6 +553,13 @@
 	run_test dtbs_equal_ordered $tree odts_$tree.test.dtb
     done
 
+    # Check -Odts preserving type information
+    for tree in type-preservation.dts; do
+        run_dtc_test -I dts -O dts -o $tree.test.dts $tree
+        run_dtc_test -I dts -O dts $tree.test.dts
+        run_wrap_test cmp $tree $tree.test.dts
+    done
+
     # Check version conversions
     for tree in test_tree1.dtb ; do
 	 for aver in 1 2 3 16 17; do
@@ -525,6 +591,13 @@
     run_dtc_test -I dts -O dtb -o dtc_tree1_delete.test.dtb test_tree1_delete.dts
     tree1_tests dtc_tree1_delete.test.dtb
 
+    # Check omit-if-no-ref functionality
+    run_dtc_test -I dts -O dtb -o omit-no-ref.test.dtb omit-no-ref.dts
+    run_test check_path omit-no-ref.test.dtb not-exists "/node1"
+    run_test check_path omit-no-ref.test.dtb not-exists "/node2"
+    run_test check_path omit-no-ref.test.dtb exists "/node3"
+    run_test check_path omit-no-ref.test.dtb exists "/node4"
+
     run_dtc_test -I dts -O dts -o delete_reinstate_multilabel.dts.test.dts delete_reinstate_multilabel.dts
     run_wrap_test cmp delete_reinstate_multilabel.dts.test.dts delete_reinstate_multilabel_ref.dts
 
@@ -540,7 +613,10 @@
     check_tests bad-name-property.dts name_properties
 
     check_tests bad-ncells.dts address_cells_is_cell size_cells_is_cell interrupt_cells_is_cell
-    check_tests bad-string-props.dts device_type_is_string model_is_string status_is_string
+    check_tests bad-string-props.dts device_type_is_string model_is_string status_is_string label_is_string compatible_is_string_list names_is_string_list
+    check_tests bad-chosen.dts chosen_node_is_root
+    check_tests bad-chosen.dts chosen_node_bootargs
+    check_tests bad-chosen.dts chosen_node_stdout_path
     check_tests bad-reg-ranges.dts reg_format ranges_format
     check_tests bad-empty-ranges.dts ranges_format
     check_tests reg-ranges-root.dts reg_format ranges_format
@@ -550,13 +626,17 @@
     check_tests unit-addr-without-reg.dts unit_address_vs_reg
     check_tests unit-addr-leading-0x.dts unit_address_format
     check_tests unit-addr-leading-0s.dts unit_address_format
+    check_tests unit-addr-unique.dts unique_unit_address
     check_tests bad-phandle-cells.dts interrupts_extended_property
     check_tests bad-gpio.dts gpios_property
+    check_tests bad-graph.dts graph_child_address
+    check_tests bad-graph.dts graph_port
+    check_tests bad-graph.dts graph_endpoint
     run_sh_test dtc-checkfails.sh deprecated_gpio_property -- -Wdeprecated_gpio_property -I dts -O dtb bad-gpio.dts
     check_tests bad-interrupt-cells.dts interrupts_property
     run_sh_test dtc-checkfails.sh node_name_chars -- -I dtb -O dtb bad_node_char.dtb
     run_sh_test dtc-checkfails.sh node_name_format -- -I dtb -O dtb bad_node_format.dtb
-    run_sh_test dtc-checkfails.sh prop_name_chars -- -I dtb -O dtb bad_prop_char.dtb
+    run_sh_test dtc-checkfails.sh property_name_chars -- -I dtb -O dtb bad_prop_char.dtb
 
     run_sh_test dtc-checkfails.sh duplicate_label -- -I dts -O dtb reuse-label1.dts
     run_sh_test dtc-checkfails.sh duplicate_label -- -I dts -O dtb reuse-label2.dts
@@ -568,6 +648,10 @@
     run_test check_path test_tree1.dtb exists "/subnode@1"
     run_test check_path test_tree1.dtb not-exists "/subnode@10"
 
+    check_tests pci-bridge-ok.dts -n pci_bridge
+    check_tests pci-bridge-bad1.dts pci_bridge
+    check_tests pci-bridge-bad2.dts pci_bridge
+
     # Check warning options
     run_sh_test dtc-checkfails.sh address_cells_is_cell interrupt_cells_is_cell -n size_cells_is_cell -- -Wno_size_cells_is_cell -I dts -O dtb bad-ncells.dts
     run_sh_test dtc-fails.sh -n test-warn-output.test.dtb -I dts -O dtb bad-ncells.dts
@@ -704,7 +788,7 @@
     text=lorem.txt
 
     # Allow just enough space for $text
-    run_dtc_test -O dtb -p $(stat -c %s $text) -o $dtb $dts
+    run_dtc_test -O dtb -p $($STATSZ $text) -o $dtb $dts
 
     # run_fdtput_test <expected-result> <file> <node> <property> <flags> <value>
     run_fdtput_test "a_model" $dtb / model -ts "a_model"
@@ -723,7 +807,7 @@
     run_fdtput_test "$(cat $text $text)" $dtb /randomnode blob -ts "$(cat $text $text)"
 
     # Start again with a fresh dtb
-    run_dtc_test -O dtb -p $(stat -c %s $text) -o $dtb $dts
+    run_dtc_test -O dtb -p $($STATSZ $text) -o $dtb $dts
 
     # Node creation
     run_wrap_error_test $DTPUT $dtb -c /baldrick sod
@@ -751,7 +835,7 @@
     run_wrap_test $DTPUT $dtb -cp /chosen/son
 
     # Start again with a fresh dtb
-    run_dtc_test -O dtb -p $(stat -c %s $text) -o $dtb $dts
+    run_dtc_test -O dtb -p $($STATSZ $text) -o $dtb $dts
 
     # Node delete
     run_wrap_test $DTPUT $dtb -c /chosen/node1 /chosen/node2 /chosen/node3
@@ -813,6 +897,7 @@
 }
 
 pylibfdt_tests () {
+    run_dtc_test -I dts -O dtb -o test_props.dtb test_props.dts
     TMP=/tmp/tests.stderr.$$
     python pylibfdt_tests.py -v 2> $TMP
 
diff -Nru device-tree-compiler-1.4.5/tests/stringlist.c device-tree-compiler-1.4.7/tests/stringlist.c
--- device-tree-compiler-1.4.5/tests/stringlist.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/stringlist.c	2018-07-23 03:00:50.000000000 +0000
@@ -60,10 +60,11 @@
 		FAIL("empty string not found in #address-cells: %d\n", err);
 
 	/*
-	 * fdt_get_string() can successfully extract strings from non-string
-	 * properties. This is because it doesn't necessarily parse the whole
-	 * property value, which would be necessary for it to determine if a
-	 * valid string or string list is present.
+	 * fdt_getprop_string() can successfully extract strings from
+	 * non-string properties. This is because it doesn't
+	 * necessarily parse the whole property value, which would be
+	 * necessary for it to determine if a valid string or string
+	 * list is present.
 	 */
 }
 
diff -Nru device-tree-compiler-1.4.5/tests/sw_states.c device-tree-compiler-1.4.7/tests/sw_states.c
--- device-tree-compiler-1.4.5/tests/sw_states.c	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/sw_states.c	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,140 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for error handling with sequential write states
+ * Copyright (C) 2018 David Gibson, Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+#define SPACE	65536
+
+#define CHECK_OK(code)							\
+	do {								\
+		verbose_printf(" OK: %s\n", #code);			\
+		err = (code);						\
+		if (err)						\
+			FAIL(#code ": %s", fdt_strerror(err));		\
+	} while (0)
+
+#define CHECK_BADSTATE(code)						\
+	do {								\
+		verbose_printf("BAD: %s\n", #code);			\
+		err = (code);						\
+		if (err == 0)						\
+			FAIL(#code ": succeeded in bad state");		\
+		else if (err != -FDT_ERR_BADSTATE)			\
+			FAIL(#code ": %s", fdt_strerror(err));		\
+	} while (0)
+
+int main(int argc, char *argv[])
+{
+	void *fdt = NULL;
+	int err;
+
+	test_init(argc, argv);
+
+	fdt = xmalloc(SPACE);
+
+	err = fdt_create(fdt, SPACE);
+	if (err)
+		FAIL("fdt_create(): %s", fdt_strerror(err));
+
+	/* Memory reserve state */
+
+	CHECK_BADSTATE(fdt_begin_node(fdt, ""));
+	CHECK_BADSTATE(fdt_property_string(fdt, "bad-str", "TEST_STRING_1"));
+	CHECK_BADSTATE(fdt_end_node(fdt));
+	CHECK_BADSTATE(fdt_finish(fdt));
+
+	CHECK_OK(fdt_add_reservemap_entry(fdt, TEST_ADDR_1, TEST_SIZE_1));
+	CHECK_OK(fdt_add_reservemap_entry(fdt, TEST_ADDR_2, TEST_SIZE_2));
+
+	CHECK_BADSTATE(fdt_begin_node(fdt, ""));
+	CHECK_BADSTATE(fdt_property_string(fdt, "bad-str", "TEST_STRING_1"));
+	CHECK_BADSTATE(fdt_end_node(fdt));
+	CHECK_BADSTATE(fdt_finish(fdt));
+
+	CHECK_OK(fdt_finish_reservemap(fdt));
+
+	/* Structure state */
+
+	CHECK_BADSTATE(fdt_add_reservemap_entry(fdt, TEST_ADDR_1, TEST_SIZE_1));
+	CHECK_BADSTATE(fdt_finish_reservemap(fdt));
+
+	CHECK_OK(fdt_begin_node(fdt, ""));
+	CHECK_OK(fdt_property_string(fdt, "compatible", "test_tree1"));
+	CHECK_OK(fdt_property_u32(fdt, "prop-int", TEST_VALUE_1));
+	CHECK_OK(fdt_property_u64(fdt, "prop-int64", TEST_VALUE64_1));
+	CHECK_OK(fdt_property_string(fdt, "prop-str", TEST_STRING_1));
+	CHECK_OK(fdt_property_u32(fdt, "#address-cells", 1));
+	CHECK_OK(fdt_property_u32(fdt, "#size-cells", 0));
+
+	CHECK_OK(fdt_begin_node(fdt, "subnode@1"));
+	CHECK_OK(fdt_property_string(fdt, "compatible", "subnode1"));
+	CHECK_OK(fdt_property_u32(fdt, "reg", 1));
+	CHECK_OK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_1));
+	CHECK_OK(fdt_begin_node(fdt, "subsubnode"));
+	CHECK_OK(fdt_property(fdt, "compatible", "subsubnode1\0subsubnode",
+			   23));
+	CHECK_OK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_1));
+	CHECK_OK(fdt_end_node(fdt));
+	CHECK_OK(fdt_begin_node(fdt, "ss1"));
+	CHECK_OK(fdt_end_node(fdt));
+	CHECK_OK(fdt_end_node(fdt));
+
+	CHECK_OK(fdt_begin_node(fdt, "subnode@2"));
+	CHECK_OK(fdt_property_u32(fdt, "reg", 2));
+	CHECK_OK(fdt_property_cell(fdt, "linux,phandle", PHANDLE_1));
+	CHECK_OK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_2));
+	CHECK_OK(fdt_property_u32(fdt, "#address-cells", 1));
+	CHECK_OK(fdt_property_u32(fdt, "#size-cells", 0));
+	CHECK_OK(fdt_begin_node(fdt, "subsubnode@0"));
+	CHECK_OK(fdt_property_u32(fdt, "reg", 0));
+	CHECK_OK(fdt_property_cell(fdt, "phandle", PHANDLE_2));
+	CHECK_OK(fdt_property(fdt, "compatible", "subsubnode2\0subsubnode",
+			   23));
+	CHECK_OK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_2));
+	CHECK_OK(fdt_end_node(fdt));
+	CHECK_OK(fdt_begin_node(fdt, "ss2"));
+	CHECK_OK(fdt_end_node(fdt));
+
+	CHECK_OK(fdt_end_node(fdt));
+
+	CHECK_OK(fdt_end_node(fdt));
+
+	CHECK_OK(fdt_finish(fdt));
+
+	/* Completed state */
+
+	CHECK_BADSTATE(fdt_add_reservemap_entry(fdt, TEST_ADDR_1, TEST_SIZE_1));
+	CHECK_BADSTATE(fdt_finish_reservemap(fdt));
+	CHECK_BADSTATE(fdt_begin_node(fdt, ""));
+	CHECK_BADSTATE(fdt_property_string(fdt, "bad-str", "TEST_STRING_1"));
+	CHECK_BADSTATE(fdt_end_node(fdt));
+	CHECK_BADSTATE(fdt_finish(fdt));
+
+	PASS();
+}
diff -Nru device-tree-compiler-1.4.5/tests/sw_tree1.c device-tree-compiler-1.4.7/tests/sw_tree1.c
--- device-tree-compiler-1.4.5/tests/sw_tree1.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/sw_tree1.c	2018-07-23 03:00:50.000000000 +0000
@@ -35,10 +35,13 @@
 	FIXED = 0,
 	RESIZE,
 	REALLOC,
+	NEWALLOC,
 } alloc_mode;
 
 static void realloc_fdt(void **fdt, size_t *size, bool created)
 {
+	int err;
+
 	switch (alloc_mode) {
 	case FIXED:
 		if (!(*fdt))
@@ -52,7 +55,10 @@
 			*fdt = xmalloc(SPACE);
 		} else if (*size < SPACE) {
 			*size += 1;
-			fdt_resize(*fdt, *fdt, *size);
+			err = fdt_resize(*fdt, *fdt, *size);
+			if (err < 0)
+				FAIL("fdt_resize() failed: %s",
+				     fdt_strerror(err));
 		} else {
 			FAIL("Ran out of space");
 		}		
@@ -61,9 +67,29 @@
 	case REALLOC:
 		*size += 1;
 		*fdt = xrealloc(*fdt, *size);
-		if (created)
-			fdt_resize(*fdt, *fdt, *size);
+		if (created) {
+			err = fdt_resize(*fdt, *fdt, *size);
+			if (err < 0)
+				FAIL("fdt_resize() failed: %s",
+				     fdt_strerror(err));
+		}
+		return;
+
+	case NEWALLOC: {
+		void *buf;
+
+		*size += 1;
+		buf = xmalloc(*size);
+		if (created) {
+			err = fdt_resize(*fdt, buf, *size);
+			if (err < 0)
+				FAIL("fdt_resize() failed: %s",
+				     fdt_strerror(err));
+		}
+		free(*fdt);
+		*fdt = buf;
 		return;
+	}
 
 	default:
 		CONFIG("Bad allocation mode");
@@ -101,6 +127,9 @@
 		} else if (streq(argv[1], "realloc")) {
 			alloc_mode = REALLOC;
 			size = 0;
+		} else if (streq(argv[1], "newalloc")) {
+			alloc_mode = NEWALLOC;
+			size = 0;
 		} else {
 			char *endp;
 
@@ -111,6 +140,8 @@
 				CONFIG("Bad allocation mode \"%s\" specified",
 				       argv[1]);
 		}
+	} else {
+		CONFIG("sw_tree1 <dtb file> [<allocation mode>]");
 	}
 
 	fdt = xmalloc(size);
diff -Nru device-tree-compiler-1.4.5/tests/sw_tree1.supp device-tree-compiler-1.4.7/tests/sw_tree1.supp
--- device-tree-compiler-1.4.5/tests/sw_tree1.supp	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/sw_tree1.supp	1970-01-01 00:00:00.000000000 +0000
@@ -1,18 +0,0 @@
-{
-   allocation methods causes uninitialized data in alignment gap
-   Memcheck:Param
-   write(buf)
-   fun:__write_nocancel
-   fun:utilfdt_write_err
-   fun:save_blob
-   fun:main
-}
-{
-   allocation methods causes uninitialized data in alignment gap
-   Memcheck:Param
-   write(buf)
-   fun:__write_nocancel
-   fun:utilfdt_write_err
-   fun:save_blob
-   fun:main
-}
diff -Nru device-tree-compiler-1.4.5/tests/testdata.h device-tree-compiler-1.4.7/tests/testdata.h
--- device-tree-compiler-1.4.5/tests/testdata.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/testdata.h	2018-07-23 03:00:50.000000000 +0000
@@ -4,15 +4,25 @@
 #define ASM_CONST_LL(x)	(x##ULL)
 #endif
 
-#define TEST_ADDR_1	ASM_CONST_LL(0xdeadbeef00000000)
-#define TEST_SIZE_1	ASM_CONST_LL(0x100000)
-#define TEST_ADDR_2	ASM_CONST_LL(123456789)
-#define TEST_SIZE_2	ASM_CONST_LL(010000)
+#define TEST_ADDR_1H	ASM_CONST_LL(0xdeadbeef)
+#define TEST_ADDR_1L	ASM_CONST_LL(0x00000000)
+#define TEST_ADDR_1	((TEST_ADDR_1H << 32) | TEST_ADDR_1L)
+#define TEST_SIZE_1H	ASM_CONST_LL(0x00000000)
+#define TEST_SIZE_1L	ASM_CONST_LL(0x00100000)
+#define TEST_SIZE_1	((TEST_SIZE_1H << 32) | TEST_SIZE_1L)
+#define TEST_ADDR_2H	ASM_CONST_LL(0)
+#define TEST_ADDR_2L	ASM_CONST_LL(123456789)
+#define TEST_ADDR_2	((TEST_ADDR_2H << 32) | TEST_ADDR_2L)
+#define TEST_SIZE_2H	ASM_CONST_LL(0)
+#define TEST_SIZE_2L	ASM_CONST_LL(010000)
+#define TEST_SIZE_2	((TEST_SIZE_2H << 32) | TEST_SIZE_2L)
 
 #define TEST_VALUE_1	0xdeadbeef
 #define TEST_VALUE_2	123456789
 
-#define TEST_VALUE64_1	ASM_CONST_LL(0xdeadbeef01abcdef)
+#define TEST_VALUE64_1H	ASM_CONST_LL(0xdeadbeef)
+#define TEST_VALUE64_1L	ASM_CONST_LL(0x01abcdef)
+#define TEST_VALUE64_1	((TEST_VALUE64_1H << 32) | TEST_VALUE64_1L)
 
 #define PHANDLE_1	0x2000
 #define PHANDLE_2	0x2001
@@ -31,10 +41,12 @@
 #define TEST_CHAR5	'\xff'
 
 #ifndef __ASSEMBLY__
-extern struct fdt_header _test_tree1;
-extern struct fdt_header _truncated_property;
-extern struct fdt_header _bad_node_char;
-extern struct fdt_header _bad_node_format;
-extern struct fdt_header _bad_prop_char;
-extern struct fdt_header _ovf_size_strings;
+extern struct fdt_header test_tree1;
+extern struct fdt_header truncated_property;
+extern struct fdt_header bad_node_char;
+extern struct fdt_header bad_node_format;
+extern struct fdt_header bad_prop_char;
+extern struct fdt_header ovf_size_strings;
+extern struct fdt_header truncated_string;
+extern struct fdt_header truncated_memrsv;
 #endif /* ! __ASSEMBLY */
diff -Nru device-tree-compiler-1.4.5/tests/test_props.dts device-tree-compiler-1.4.7/tests/test_props.dts
--- device-tree-compiler-1.4.5/tests/test_props.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/test_props.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,11 @@
+/dts-v1/;
+
+/ {
+	compatible = "test_props";
+	prop-hex32 = <0xdeadbeef>;
+	prop-uint32 = <123>;
+	prop-int32 = <0xfffffffe>;
+	prop-hex64 = /bits/ 64 <0xdeadbeef01abcdef>;
+	prop-uint64 = /bits/ 64 <9223372036854775807>;
+	prop-int64 = /bits/ 64 <0xfffffffffffffffe>;
+};
diff -Nru device-tree-compiler-1.4.5/tests/tests.h device-tree-compiler-1.4.7/tests/tests.h
--- device-tree-compiler-1.4.5/tests/tests.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/tests.h	2018-07-23 03:00:50.000000000 +0000
@@ -1,5 +1,5 @@
-#ifndef _TESTS_H
-#define _TESTS_H
+#ifndef TESTS_H
+#define TESTS_H
 /*
  * libfdt - Flat Device Tree manipulation
  *	Testcase definitions
@@ -119,6 +119,7 @@
 #define check_getprop_string(fdt, nodeoffset, name, s) \
 	check_getprop((fdt), (nodeoffset), (name), strlen(s)+1, (s))
 int nodename_eq(const char *s1, const char *s2);
+void vg_prepare_blob(void *fdt, size_t bufsize);
 void *load_blob(const char *filename);
 void *load_blob_arg(int argc, char *argv[]);
 void save_blob(const char *filename, void *blob);
@@ -126,4 +127,4 @@
 
 #include "util.h"
 
-#endif /* _TESTS_H */
+#endif /* TESTS_H */
diff -Nru device-tree-compiler-1.4.5/tests/testutils.c device-tree-compiler-1.4.7/tests/testutils.c
--- device-tree-compiler-1.4.5/tests/testutils.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/testutils.c	2018-07-23 03:00:50.000000000 +0000
@@ -30,10 +30,15 @@
 #include <unistd.h>
 #include <fcntl.h>
 
+#include <valgrind/memcheck.h>
+
 #include <libfdt.h>
 
 #include "tests.h"
 
+/* For FDT_SW_MAGIC */
+#include "libfdt_internal.h"
+
 int verbose_test = 1;
 char *test_name;
 
@@ -88,7 +93,7 @@
 		    int len, const void *val)
 {
 	const struct fdt_property *prop;
-	int retlen;
+	int retlen, namelen;
 	uint32_t tag, nameoff, proplen;
 	const char *propname;
 
@@ -106,8 +111,13 @@
 	if (tag != FDT_PROP)
 		FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name);
 
-	propname = fdt_string(fdt, nameoff);
-	if (!propname || !streq(propname, name))
+	propname = fdt_get_string(fdt, nameoff, &namelen);
+	if (!propname)
+		FAIL("Couldn't get property name: %s", fdt_strerror(namelen));
+	if (namelen != strlen(propname))
+		FAIL("Incorrect prop name length: %d instead of %zd",
+		     namelen, strlen(propname));
+	if (!streq(propname, name))
 		FAIL("Property name mismatch \"%s\" instead of \"%s\"",
 		     propname, name);
 	if (proplen != retlen)
@@ -117,7 +127,7 @@
 	if (proplen != len)
 		FAIL("Size mismatch on property \"%s\": %d insead of %d",
 		     name, proplen, len);
-	if (memcmp(val, prop->data, len) != 0)
+	if (len && memcmp(val, prop->data, len) != 0)
 		FAIL("Data mismatch on property \"%s\"", name);
 }
 
@@ -134,7 +144,7 @@
 	if (proplen != len)
 		FAIL("Size mismatch on property \"%s\": %d insead of %d",
 		     name, proplen, len);
-	if (memcmp(val, propval, len) != 0)
+	if (len && memcmp(val, propval, len) != 0)
 		FAIL("Data mismatch on property \"%s\"", name);
 
 	return propval;
@@ -154,16 +164,66 @@
 		return 0;
 }
 
-#define CHUNKSIZE	128
+void vg_prepare_blob(void *fdt, size_t bufsize)
+{
+	char *blob = fdt;
+	int off_memrsv, off_strings, off_struct;
+	int num_memrsv;
+	size_t size_memrsv, size_strings, size_struct;
+
+	off_memrsv = fdt_off_mem_rsvmap(fdt);
+	num_memrsv = fdt_num_mem_rsv(fdt);
+	if (num_memrsv < 0)
+		size_memrsv = fdt_totalsize(fdt) - off_memrsv;
+	else
+		size_memrsv = (num_memrsv + 1)
+			* sizeof(struct fdt_reserve_entry);
+
+	VALGRIND_MAKE_MEM_UNDEFINED(blob, bufsize);
+	VALGRIND_MAKE_MEM_DEFINED(blob, FDT_V1_SIZE);
+	VALGRIND_MAKE_MEM_DEFINED(blob, fdt_header_size(fdt));
+
+	if (fdt_magic(fdt) == FDT_MAGIC) {
+		off_strings = fdt_off_dt_strings(fdt);
+		if (fdt_version(fdt) >= 3)
+			size_strings = fdt_size_dt_strings(fdt);
+		else
+			size_strings = fdt_totalsize(fdt) - off_strings;
+
+		off_struct = fdt_off_dt_struct(fdt);
+		if (fdt_version(fdt) >= 17)
+			size_struct = fdt_size_dt_struct(fdt);
+		else
+			size_struct = fdt_totalsize(fdt) - off_struct;
+	} else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
+		size_strings = fdt_size_dt_strings(fdt);
+		off_strings = fdt_off_dt_strings(fdt) - size_strings;
+
+		off_struct = fdt_off_dt_struct(fdt);
+		size_struct = fdt_size_dt_struct(fdt);
+		size_struct = fdt_totalsize(fdt) - off_struct;
+
+	} else {
+		CONFIG("Bad magic on vg_prepare_blob()");
+	}
+
+	VALGRIND_MAKE_MEM_DEFINED(blob + off_memrsv, size_memrsv);
+	VALGRIND_MAKE_MEM_DEFINED(blob + off_strings, size_strings);
+	VALGRIND_MAKE_MEM_DEFINED(blob + off_struct, size_struct);
+}
 
 void *load_blob(const char *filename)
 {
 	char *blob;
-	int ret = utilfdt_read_err(filename, &blob);
+	size_t len;
+	int ret = utilfdt_read_err(filename, &blob, &len);
 
 	if (ret)
 		CONFIG("Couldn't open blob from \"%s\": %s", filename,
 		       strerror(ret));
+
+	vg_prepare_blob(blob, len);
+
 	return blob;
 }
 
@@ -176,11 +236,20 @@
 
 void save_blob(const char *filename, void *fdt)
 {
-	int ret = utilfdt_write_err(filename, fdt);
-
+	size_t size = fdt_totalsize(fdt);
+	void *tmp;
+	int ret;
+
+	/* Make a temp copy of the blob so that valgrind won't check
+	 * about uninitialized bits in the pieces between blocks */
+	tmp = xmalloc(size);
+	fdt_move(fdt, tmp, size);
+	VALGRIND_MAKE_MEM_DEFINED(tmp, size);
+	ret = utilfdt_write_err(filename, tmp);
 	if (ret)
 		CONFIG("Couldn't write blob to \"%s\": %s", filename,
 		       strerror(ret));
+	free(tmp);
 }
 
 void *open_blob_rw(void *blob)
diff -Nru device-tree-compiler-1.4.5/tests/trees.S device-tree-compiler-1.4.7/tests/trees.S
--- device-tree-compiler-1.4.5/tests/trees.S	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/trees.S	2018-07-23 03:00:50.000000000 +0000
@@ -7,20 +7,9 @@
 	.byte	((val) >> 8) & 0xff ; \
 	.byte	(val) & 0xff	;
 
-#define FDTQUAD(val) \
-	.byte	((val) >> 56) & 0xff ; \
-	.byte	((val) >> 48) & 0xff ; \
-	.byte	((val) >> 40) & 0xff ; \
-	.byte	((val) >> 32) & 0xff ; \
-	.byte	((val) >> 24) & 0xff ; \
-	.byte	((val) >> 16) & 0xff ; \
-	.byte	((val) >> 8) & 0xff ; \
-	.byte	(val) & 0xff	;
-
 #define TREE_HDR(tree) \
 	.balign	8		; \
-	.globl	_##tree		; \
-_##tree:	\
+	.globl	tree		; \
 tree:	\
 	FDTLONG(FDT_MAGIC)	; \
 	FDTLONG(tree##_end - tree) ; \
@@ -33,14 +22,16 @@
 	FDTLONG(tree##_strings_end - tree##_strings) ; \
 	FDTLONG(tree##_struct_end - tree##_struct) ;
 
-#define RSVMAP_ENTRY(addr, len) \
-	FDTQUAD(addr)		; \
-	FDTQUAD(len)		; \
+#define RSVMAP_ENTRY(addrh, addrl, lenh, lenl) \
+	FDTLONG(addrh)		; \
+	FDTLONG(addrl)		; \
+	FDTLONG(lenh)		; \
+	FDTLONG(lenl)
 
 #define EMPTY_RSVMAP(tree) \
 	.balign	8		; \
 tree##_rsvmap:			; \
-	RSVMAP_ENTRY(0, 0) \
+	RSVMAP_ENTRY(0, 0, 0, 0) \
 tree##_rsvmap_end:		;
 
 #define PROPHDR(tree, name, len) \
@@ -48,13 +39,17 @@
 	FDTLONG(len)		; \
 	FDTLONG(tree##_##name - tree##_strings) ;
 
+#define PROP_EMPTY(tree, name) \
+	PROPHDR(tree, name, 0)	;
+
 #define PROP_INT(tree, name, val) \
 	PROPHDR(tree, name, 4) \
 	FDTLONG(val)		;
 
-#define PROP_INT64(tree, name, val) \
+#define PROP_INT64(tree, name, valh, vall) \
 	PROPHDR(tree, name, 8) \
-	FDTQUAD(val)		;
+	FDTLONG(valh)		; \
+	FDTLONG(vall)		;
 
 #define PROP_STR(tree, name, str) \
 	PROPHDR(tree, name, 55f - 54f) \
@@ -81,16 +76,16 @@
 
 	.balign	8
 test_tree1_rsvmap:
-	RSVMAP_ENTRY(TEST_ADDR_1, TEST_SIZE_1)
-	RSVMAP_ENTRY(TEST_ADDR_2, TEST_SIZE_2)
-	RSVMAP_ENTRY(0, 0)
+	RSVMAP_ENTRY(TEST_ADDR_1H, TEST_ADDR_1L, TEST_SIZE_1H, TEST_SIZE_1L)
+	RSVMAP_ENTRY(TEST_ADDR_2H, TEST_ADDR_2L, TEST_SIZE_2H, TEST_SIZE_2L)
+	RSVMAP_ENTRY(0, 0, 0, 0)
 test_tree1_rsvmap_end:
 
 test_tree1_struct:
 	BEGIN_NODE("")
 	PROP_STR(test_tree1, compatible, "test_tree1")
 	PROP_INT(test_tree1, prop_int, TEST_VALUE_1)
-	PROP_INT64(test_tree1, prop_int64, TEST_VALUE64_1)
+	PROP_INT64(test_tree1, prop_int64, TEST_VALUE64_1H, TEST_VALUE64_1L)
 	PROP_STR(test_tree1, prop_str, TEST_STRING_1)
 	PROP_INT(test_tree1, address_cells, 1)
 	PROP_INT(test_tree1, size_cells, 0)
@@ -215,8 +210,7 @@
 
 	/* overflow_size_strings */
 	.balign	8
-	.globl	_ovf_size_strings
-_ovf_size_strings:
+	.globl	ovf_size_strings
 ovf_size_strings:
 	FDTLONG(FDT_MAGIC)
 	FDTLONG(ovf_size_strings_end - ovf_size_strings)
@@ -242,3 +236,46 @@
 	ovf_size_strings_bad_string = ovf_size_strings_strings + 0x10000000
 ovf_size_strings_strings_end:
 ovf_size_strings_end:
+
+
+	/* truncated_string */
+	TREE_HDR(truncated_string)
+	EMPTY_RSVMAP(truncated_string)
+
+truncated_string_struct:
+	BEGIN_NODE("")
+	PROP_EMPTY(truncated_string, good_string)
+	PROP_EMPTY(truncated_string, bad_string)
+	END_NODE
+	FDTLONG(FDT_END)
+truncated_string_struct_end:
+
+truncated_string_strings:
+	STRING(truncated_string, good_string, "good")
+truncated_string_bad_string:
+	.byte	'b'
+	.byte	'a'
+	.byte	'd'
+	/* NOTE: terminating \0 deliberately missing */
+truncated_string_strings_end:
+truncated_string_end:
+
+
+	/* truncated_memrsv */
+	TREE_HDR(truncated_memrsv)
+
+truncated_memrsv_struct:
+	BEGIN_NODE("")
+	END_NODE
+	FDTLONG(FDT_END)
+truncated_memrsv_struct_end:
+
+truncated_memrsv_strings:
+truncated_memrsv_strings_end:
+
+	.balign	8
+truncated_memrsv_rsvmap:
+	RSVMAP_ENTRY(TEST_ADDR_1H, TEST_ADDR_1L, TEST_SIZE_1H, TEST_SIZE_1L)
+truncated_memrsv_rsvmap_end:
+
+truncated_memrsv_end:
diff -Nru device-tree-compiler-1.4.5/tests/truncated_memrsv.c device-tree-compiler-1.4.7/tests/truncated_memrsv.c
--- device-tree-compiler-1.4.5/tests/truncated_memrsv.c	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/truncated_memrsv.c	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,63 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for misbehaviour on a truncated string
+ * Copyright (C) 2018 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+int main(int argc, char *argv[])
+{
+	void *fdt = &truncated_memrsv;
+	int err;
+	uint64_t addr, size;
+
+	test_init(argc, argv);
+
+	err = fdt_check_header(fdt);
+	if (err != 0)
+		FAIL("Bad header: %s", fdt_strerror(err));
+
+	err = fdt_num_mem_rsv(fdt);
+	if (err != -FDT_ERR_TRUNCATED)
+		FAIL("fdt_num_mem_rsv() returned %d instead of -FDT_ERR_TRUNCATED",
+		     err);
+
+	err = fdt_get_mem_rsv(fdt, 0, &addr, &size);
+	if (err != 0)
+		FAIL("fdt_get_mem_rsv() failed on first entry: %s",
+		     fdt_strerror(err));
+	if ((addr != TEST_ADDR_1) || (size != TEST_SIZE_1))
+		FAIL("Entry doesn't match: (0x%llx, 0x%llx) != (0x%llx, 0x%llx)",
+		     (unsigned long long)addr, (unsigned long long)size,
+		     TEST_ADDR_1, TEST_SIZE_1);
+
+	err = fdt_get_mem_rsv(fdt, 1, &addr, &size);
+	if (err != -FDT_ERR_BADOFFSET)
+		FAIL("fdt_get_mem_rsv(1) returned %d instead of -FDT_ERR_BADOFFSET",
+		     err);
+
+	PASS();
+}
diff -Nru device-tree-compiler-1.4.5/tests/truncated_property.c device-tree-compiler-1.4.7/tests/truncated_property.c
--- device-tree-compiler-1.4.5/tests/truncated_property.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/truncated_property.c	2018-07-23 03:00:50.000000000 +0000
@@ -30,12 +30,14 @@
 
 int main(int argc, char *argv[])
 {
-	void *fdt = &_truncated_property;
+	void *fdt = &truncated_property;
 	const void *prop;
 	int len;
 
 	test_init(argc, argv);
 
+	vg_prepare_blob(fdt, fdt_totalsize(fdt));
+
 	prop = fdt_getprop(fdt, 0, "truncated", &len);
 	if (prop)
 		FAIL("fdt_getprop() succeeded on truncated property");
diff -Nru device-tree-compiler-1.4.5/tests/truncated_string.c device-tree-compiler-1.4.7/tests/truncated_string.c
--- device-tree-compiler-1.4.5/tests/truncated_string.c	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/truncated_string.c	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,81 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for misbehaviour on a truncated string
+ * Copyright (C) 2018 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+int main(int argc, char *argv[])
+{
+	void *fdt = &truncated_string;
+	const struct fdt_property *good, *bad;
+	int off, len;
+	const char *name;
+
+	test_init(argc, argv);
+
+	vg_prepare_blob(fdt, fdt_totalsize(fdt));
+
+	off = fdt_first_property_offset(fdt, 0);
+	good = fdt_get_property_by_offset(fdt, off, NULL);
+
+	off = fdt_next_property_offset(fdt, off);
+	bad = fdt_get_property_by_offset(fdt, off, NULL);
+
+	if (fdt32_to_cpu(good->len) != 0)
+		FAIL("Unexpected length for good property");
+	name = fdt_get_string(fdt, fdt32_to_cpu(good->nameoff), &len);
+	if (!name)
+		FAIL("fdt_get_string() failed on good property: %s",
+		     fdt_strerror(len));
+	if (len != 4)
+		FAIL("fdt_get_string() returned length %d (not 4) on good property",
+		     len);
+	if (!streq(name, "good"))
+		FAIL("fdt_get_string() returned \"%s\" (not \"good\") on good property",
+		     name);
+
+	if (fdt32_to_cpu(bad->len) != 0)
+		FAIL("Unexpected length for bad property\n");
+	name = fdt_get_string(fdt, fdt32_to_cpu(bad->nameoff), &len);
+	if (name)
+		FAIL("fdt_get_string() succeeded incorrectly on bad property");
+	else if (len != -FDT_ERR_TRUNCATED)
+		FAIL("fdt_get_string() gave unexpected error on bad property: %s",
+		     fdt_strerror(len));
+
+	/* Make sure the 'good' property breaks correctly if we
+	 * truncate the strings section */
+	fdt_set_size_dt_strings(fdt, fdt32_to_cpu(good->nameoff) + 4);
+	name = fdt_get_string(fdt, fdt32_to_cpu(good->nameoff), &len);
+	if (name)
+		FAIL("fdt_get_string() succeeded incorrectly on mangled property");
+	else if (len != -FDT_ERR_TRUNCATED)
+		FAIL("fdt_get_string() gave unexpected error on mangled property: %s",
+		     fdt_strerror(len));
+
+	PASS();
+}
diff -Nru device-tree-compiler-1.4.5/tests/type-preservation.dts device-tree-compiler-1.4.7/tests/type-preservation.dts
--- device-tree-compiler-1.4.5/tests/type-preservation.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/type-preservation.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,28 @@
+/dts-v1/;
+
+/ {
+	#address-cells = < 0x01 >;
+	#size-cells = < 0x00 >;
+
+	sub1: subnode@1 {
+		prop_label: compatible = value_label: "subnode1";
+		reg = < 0x01 >;
+		int-array = < 0x00 0x01 >, int_value_label: < 0x02 0x03 >;
+		int8 = [ 56 ];
+		int8-array = [ 00 12 34 56 label: ];
+		int16 = /bits/ 16 < 0x3210 >;
+		int16-array = /bits/ 16 < 0x1234 0x5678 0x90ab 0xcdef >;
+		int16-matrix = /bits/ 16 < 0x1234 0x5678 >, < 0x90ab 0xcdef >;
+		int64 = /bits/ 64 < 0x200000000 >;
+		int64-array = /bits/ 64 < 0x100000000 0x00 int64_array_label_end: >;
+		a-string-with-nulls = "foo\0bar", "baz";
+
+		subsub1: subsubnode {
+			compatible = "subsubnode1", "subsubnode";
+
+			subsubsub1: subsubsubnode {
+				compatible = "subsubsubnode1", < 0x1234 >, valuea: valueb: "subsubsubnode";
+			};
+		};
+	};
+};
diff -Nru device-tree-compiler-1.4.5/tests/unit-addr-unique.dts device-tree-compiler-1.4.7/tests/unit-addr-unique.dts
--- device-tree-compiler-1.4.5/tests/unit-addr-unique.dts	1970-01-01 00:00:00.000000000 +0000
+++ device-tree-compiler-1.4.7/tests/unit-addr-unique.dts	2018-07-23 03:00:50.000000000 +0000
@@ -0,0 +1,14 @@
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	foo@1 {
+		reg = <1>;
+	};
+
+	bar@1 {
+		reg = <1>;
+	};
+};
diff -Nru device-tree-compiler-1.4.5/.travis.yml device-tree-compiler-1.4.7/.travis.yml
--- device-tree-compiler-1.4.5/.travis.yml	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/.travis.yml	2018-07-23 03:00:50.000000000 +0000
@@ -13,6 +13,7 @@
           packages:
             - swig
             - python-dev
+            - valgrind
         coverity_scan:
           project:
             name: dtc
@@ -20,11 +21,15 @@
           notification_email: david@gibson.dropbear.id.au
           build_command: make
           branch_pattern: coverity_scan
+      script:
+        - make
+        - make check && make checkm
 
+    # Check it builds properly without the python bits
     - addons:
         apt:
           packages:
-
-script:
+            - valgrind
+      script:
         - make
         - make check
diff -Nru device-tree-compiler-1.4.5/treesource.c device-tree-compiler-1.4.7/treesource.c
--- device-tree-compiler-1.4.5/treesource.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/treesource.c	2018-07-23 03:00:50.000000000 +0000
@@ -61,24 +61,14 @@
 		|| strchr("\a\b\t\n\v\f\r", c));
 }
 
-static void write_propval_string(FILE *f, struct data val)
+static void write_propval_string(FILE *f, const char *s, size_t len)
 {
-	const char *str = val.val;
-	int i;
-	struct marker *m = val.markers;
-
-	assert(str[val.len-1] == '\0');
+	const char *end = s + len - 1;
+	assert(*end == '\0');
 
-	while (m && (m->offset == 0)) {
-		if (m->type == LABEL)
-			fprintf(f, "%s: ", m->ref);
-		m = m->next;
-	}
 	fprintf(f, "\"");
-
-	for (i = 0; i < (val.len-1); i++) {
-		char c = str[i];
-
+	while (s < end) {
+		char c = *s++;
 		switch (c) {
 		case '\a':
 			fprintf(f, "\\a");
@@ -108,91 +98,73 @@
 			fprintf(f, "\\\"");
 			break;
 		case '\0':
-			fprintf(f, "\", ");
-			while (m && (m->offset <= (i + 1))) {
-				if (m->type == LABEL) {
-					assert(m->offset == (i+1));
-					fprintf(f, "%s: ", m->ref);
-				}
-				m = m->next;
-			}
-			fprintf(f, "\"");
+			fprintf(f, "\\0");
 			break;
 		default:
 			if (isprint((unsigned char)c))
 				fprintf(f, "%c", c);
 			else
-				fprintf(f, "\\x%02hhx", c);
+				fprintf(f, "\\x%02"PRIx8, c);
 		}
 	}
 	fprintf(f, "\"");
-
-	/* Wrap up any labels at the end of the value */
-	for_each_marker_of_type(m, LABEL) {
-		assert (m->offset == val.len);
-		fprintf(f, " %s:", m->ref);
-	}
 }
 
-static void write_propval_cells(FILE *f, struct data val)
+static void write_propval_int(FILE *f, const char *p, size_t len, size_t width)
 {
-	void *propend = val.val + val.len;
-	fdt32_t *cp = (fdt32_t *)val.val;
-	struct marker *m = val.markers;
-
-	fprintf(f, "<");
-	for (;;) {
-		while (m && (m->offset <= ((char *)cp - val.val))) {
-			if (m->type == LABEL) {
-				assert(m->offset == ((char *)cp - val.val));
-				fprintf(f, "%s: ", m->ref);
-			}
-			m = m->next;
-		}
+	const char *end = p + len;
+	assert(len % width == 0);
 
-		fprintf(f, "0x%x", fdt32_to_cpu(*cp++));
-		if ((void *)cp >= propend)
+	for (; p < end; p += width) {
+		switch (width) {
+		case 1:
+			fprintf(f, " %02"PRIx8, *(const uint8_t*)p);
 			break;
-		fprintf(f, " ");
-	}
-
-	/* Wrap up any labels at the end of the value */
-	for_each_marker_of_type(m, LABEL) {
-		assert (m->offset == val.len);
-		fprintf(f, " %s:", m->ref);
+		case 2:
+			fprintf(f, " 0x%02"PRIx16, fdt16_to_cpu(*(const fdt16_t*)p));
+			break;
+		case 4:
+			fprintf(f, " 0x%02"PRIx32, fdt32_to_cpu(*(const fdt32_t*)p));
+			break;
+		case 8:
+			fprintf(f, " 0x%02"PRIx64, fdt64_to_cpu(*(const fdt64_t*)p));
+			break;
+		}
 	}
-	fprintf(f, ">");
 }
 
-static void write_propval_bytes(FILE *f, struct data val)
+static struct marker *next_type_marker(struct marker *m)
 {
-	void *propend = val.val + val.len;
-	const char *bp = val.val;
-	struct marker *m = val.markers;
-
-	fprintf(f, "[");
-	for (;;) {
-		while (m && (m->offset == (bp-val.val))) {
-			if (m->type == LABEL)
-				fprintf(f, "%s: ", m->ref);
-			m = m->next;
-		}
+	while (m && (m->type == LABEL || m->type == REF_PHANDLE || m->type == REF_PATH))
+		m = m->next;
+	return m;
+}
 
-		fprintf(f, "%02hhx", (unsigned char)(*bp++));
-		if ((const void *)bp >= propend)
-			break;
-		fprintf(f, " ");
-	}
+static size_t type_marker_length(struct marker *m)
+{
+	struct marker *next = next_type_marker(m->next);
 
-	/* Wrap up any labels at the end of the value */
-	for_each_marker_of_type(m, LABEL) {
-		assert (m->offset == val.len);
-		fprintf(f, " %s:", m->ref);
-	}
-	fprintf(f, "]");
+	if (next)
+		return next->offset - m->offset;
+	return 0;
 }
 
-static void write_propval(FILE *f, struct property *prop)
+static const char *delim_start[] = {
+	[TYPE_UINT8] = "[",
+	[TYPE_UINT16] = "/bits/ 16 <",
+	[TYPE_UINT32] = "<",
+	[TYPE_UINT64] = "/bits/ 64 <",
+	[TYPE_STRING] = "",
+};
+static const char *delim_end[] = {
+	[TYPE_UINT8] = " ]",
+	[TYPE_UINT16] = " >",
+	[TYPE_UINT32] = " >",
+	[TYPE_UINT64] = " >",
+	[TYPE_STRING] = "",
+};
+
+static enum markertype guess_value_type(struct property *prop)
 {
 	int len = prop->val.len;
 	const char *p = prop->val.val;
@@ -201,11 +173,6 @@
 	int nnotstringlbl = 0, nnotcelllbl = 0;
 	int i;
 
-	if (len == 0) {
-		fprintf(f, ";\n");
-		return;
-	}
-
 	for (i = 0; i < len; i++) {
 		if (! isstring(p[i]))
 			nnotstring++;
@@ -220,17 +187,91 @@
 			nnotcelllbl++;
 	}
 
-	fprintf(f, " = ");
 	if ((p[len-1] == '\0') && (nnotstring == 0) && (nnul < (len-nnul))
 	    && (nnotstringlbl == 0)) {
-		write_propval_string(f, prop->val);
+		return TYPE_STRING;
 	} else if (((len % sizeof(cell_t)) == 0) && (nnotcelllbl == 0)) {
-		write_propval_cells(f, prop->val);
-	} else {
-		write_propval_bytes(f, prop->val);
+		return TYPE_UINT32;
 	}
 
-	fprintf(f, ";\n");
+	return TYPE_UINT8;
+}
+
+static void write_propval(FILE *f, struct property *prop)
+{
+	size_t len = prop->val.len;
+	struct marker *m = prop->val.markers;
+	struct marker dummy_marker;
+	enum markertype emit_type = TYPE_NONE;
+
+	if (len == 0) {
+		fprintf(f, ";\n");
+		return;
+	}
+
+	fprintf(f, " = ");
+
+	if (!next_type_marker(m)) {
+		/* data type information missing, need to guess */
+		dummy_marker.type = guess_value_type(prop);
+		dummy_marker.next = prop->val.markers;
+		dummy_marker.offset = 0;
+		dummy_marker.ref = NULL;
+		m = &dummy_marker;
+	}
+
+	struct marker *m_label = prop->val.markers;
+	for_each_marker(m) {
+		size_t chunk_len;
+		const char *p = &prop->val.val[m->offset];
+
+		if (m->type < TYPE_UINT8)
+			continue;
+
+		chunk_len = type_marker_length(m);
+		if (!chunk_len)
+			chunk_len = len - m->offset;
+
+		if (emit_type != TYPE_NONE)
+			fprintf(f, "%s, ", delim_end[emit_type]);
+		emit_type = m->type;
+
+		for_each_marker_of_type(m_label, LABEL) {
+			if (m_label->offset > m->offset)
+				break;
+			fprintf(f, "%s: ", m_label->ref);
+		}
+
+		fprintf(f, "%s", delim_start[emit_type]);
+
+		if (chunk_len <= 0)
+			continue;
+
+		switch(emit_type) {
+		case TYPE_UINT16:
+			write_propval_int(f, p, chunk_len, 2);
+			break;
+		case TYPE_UINT32:
+			write_propval_int(f, p, chunk_len, 4);
+			break;
+		case TYPE_UINT64:
+			write_propval_int(f, p, chunk_len, 8);
+			break;
+		case TYPE_STRING:
+			write_propval_string(f, p, chunk_len);
+			break;
+		default:
+			write_propval_int(f, p, chunk_len, 1);
+		}
+	}
+
+	/* Wrap up any labels at the end of the value */
+	for_each_marker_of_type(m_label, LABEL) {
+		assert (m_label->offset == len);
+		fprintf(f, " %s:", m_label->ref);
+	}
+
+	fprintf(f, "%s;\n", delim_end[emit_type] ? : "");
 }
 
 static void write_tree_source_node(FILE *f, struct node *tree, int level)
@@ -281,4 +322,3 @@
 
 	write_tree_source_node(f, dti->dt, 0);
 }
-
diff -Nru device-tree-compiler-1.4.5/util.c device-tree-compiler-1.4.7/util.c
--- device-tree-compiler-1.4.5/util.c	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/util.c	2018-07-23 03:00:50.000000000 +0000
@@ -227,11 +227,11 @@
 	return val;
 }
 
-int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len)
+int utilfdt_read_err(const char *filename, char **buffp, size_t *len)
 {
 	int fd = 0;	/* assume stdin */
 	char *buf = NULL;
-	off_t bufsize = 1024, offset = 0;
+	size_t bufsize = 1024, offset = 0;
 	int ret = 0;
 
 	*buffp = NULL;
@@ -264,20 +264,15 @@
 		free(buf);
 	else
 		*buffp = buf;
-	*len = bufsize;
+	if (len)
+		*len = bufsize;
 	return ret;
 }
 
-int utilfdt_read_err(const char *filename, char **buffp)
-{
-	off_t len;
-	return utilfdt_read_err_len(filename, buffp, &len);
-}
-
-char *utilfdt_read_len(const char *filename, off_t *len)
+char *utilfdt_read(const char *filename, size_t *len)
 {
 	char *buff;
-	int ret = utilfdt_read_err_len(filename, &buff, len);
+	int ret = utilfdt_read_err(filename, &buff, len);
 
 	if (ret) {
 		fprintf(stderr, "Couldn't open blob from '%s': %s\n", filename,
@@ -288,12 +283,6 @@
 	return buff;
 }
 
-char *utilfdt_read(const char *filename)
-{
-	off_t len;
-	return utilfdt_read_len(filename, &len);
-}
-
 int utilfdt_write_err(const char *filename, const void *blob)
 {
 	int fd = 1;	/* assume stdout */
diff -Nru device-tree-compiler-1.4.5/util.h device-tree-compiler-1.4.7/util.h
--- device-tree-compiler-1.4.5/util.h	2017-09-27 10:00:10.000000000 +0000
+++ device-tree-compiler-1.4.7/util.h	2018-07-23 03:00:50.000000000 +0000
@@ -1,5 +1,5 @@
-#ifndef _UTIL_H
-#define _UTIL_H
+#ifndef UTIL_H
+#define UTIL_H
 
 #include <stdarg.h>
 #include <stdbool.h>
@@ -35,6 +35,9 @@
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
+#define stringify(s)	stringify_(s)
+#define stringify_(s)	#s
+
 static inline void NORETURN PRINTF(1, 2) die(const char *str, ...)
 {
 	va_list ap;
@@ -95,16 +98,10 @@
  * stderr.
  *
  * @param filename	The filename to read, or - for stdin
- * @return Pointer to allocated buffer containing fdt, or NULL on error
- */
-char *utilfdt_read(const char *filename);
-
-/**
- * Like utilfdt_read(), but also passes back the size of the file read.
- *
  * @param len		If non-NULL, the amount of data we managed to read
+ * @return Pointer to allocated buffer containing fdt, or NULL on error
  */
-char *utilfdt_read_len(const char *filename, off_t *len);
+char *utilfdt_read(const char *filename, size_t *len);
 
 /**
  * Read a device tree file into a buffer. Does not report errors, but only
@@ -113,16 +110,10 @@
  *
  * @param filename	The filename to read, or - for stdin
  * @param buffp		Returns pointer to buffer containing fdt
- * @return 0 if ok, else an errno value representing the error
- */
-int utilfdt_read_err(const char *filename, char **buffp);
-
-/**
- * Like utilfdt_read_err(), but also passes back the size of the file read.
- *
  * @param len		If non-NULL, the amount of data we managed to read
+ * @return 0 if ok, else an errno value representing the error
  */
-int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len);
+int utilfdt_read_err(const char *filename, char **buffp, size_t *len);
 
 /**
  * Write a device tree buffer to a file. This will report any errors on
@@ -260,4 +251,4 @@
 	case 'V': util_version(); \
 	case '?': usage("unknown option");
 
-#endif /* _UTIL_H */
+#endif /* UTIL_H */