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shim package

  1. Bug #1624096
  2. Comment #3

Comment 3 for bug 1624096

Revision history for this message
Laszlo Ersek (Red Hat) (lersek) wrote : Re: yakkety: desktop and server ISOs wont boot under QEMU in UEFI mode

Add all three of the following options to your QEMU command line:

    -debugcon file:debug.log \
    -global isa-debugcon.iobase=0x402 \
    -serial stdio

In the OVMF debug log, you will see that your boot loader is launched:

    [Bds]Booting UEFI QEMU DVD-ROM QM00003
    FatDiskIo: Cache Page OutBound occurred!
    FSOpen: Open '\EFI\BOOT\BOOTX64.EFI' Success
    [Bds] DevicePath expand: PciRoot(0x0)/Pci(0x1,0x1)/Ata(Secondary,Master,0x0) -> PciRoot(0x0)/Pci(0x1,0x1)/Ata(Secondary,Master,0x0)/CDROM(0x1,0xC83AD,0x11C0)/\EFI\BOOT\BOOTX64.EFI
    InstallProtocolInterface: 5B1B31A1-9562-11D2-8E3F-00A0C969723B 6C4D040
    Loading driver at 0x00006486000 EntryPoint=0x000064A3000
    InstallProtocolInterface: BC62157E-3E33-4FEC-9920-2D3B36D750DF 700E318

And on the serial console, you will get the register dump for the crash:

    !!!! X64 Exception Type - 0D(#GP - General Protection) CPU Apic ID - 00000000 !!!!
    RIP - AFAFAFAFAFAFAFAF, CS - 0000000000000038, RFLAGS - 0000000000000206
    ExceptionData - 0000000000000000
    RAX - AFAFAFAFAFAFAFAF, RCX - 00000000070176A0, RDX - 00000000070176A0
    RBX - 0000000006C4D018, RSP - 0000000007AFBA28, RBP - 0000000007AFBAE0
    RSI - 0000000006534D9A, RDI - 0000000006485FBA
    R8 - 0000000000000000, R9 - 0000000000000000, R10 - 0000000000000020
    R11 - 00000000067E7180, R12 - 0000000000000000, R13 - 0000000006F883E8
    R14 - 0000000006F883F0, R15 - 0000000007B1E9D0
    DS - 0000000000000030, ES - 0000000000000030, FS - 0000000000000030
    GS - 0000000000000030, SS - 0000000000000030
    CR0 - 0000000080000033, CR2 - 0000000000000000, CR3 - 0000000007A9A000
    CR4 - 0000000000000668, CR8 - 0000000000000000
    DR0 - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000
    DR3 - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400
    GDTR - 0000000007A88698 0000000000000047, LDTR - 0000000000000000
    IDTR - 0000000007442018 0000000000000FFF, TR - 0000000000000000
    FXSAVE_STATE - 0000000007AFB680

The pattern AFAFAFAFAFAFAFAF is used to fill memory that's being freed, for debugging purposes. So, your BOOTX64.EFI application dances fandango on core.