From the ubuntu packaged version debian changelog:
[ John Rigby ]
* SAUCE: Snowball: init serial later
* MMC: arm_pl180_mmci: allow multiple devices
* OMAP3 Beagle and OMAP4: add preEnv.txt support (LP: 932436)
[ Rob Herring ]
* net: allow setting env enetaddr from net device setting
* net: add Calxeda xgmac driver
* ARM: highbank: enable networking and pxe
* ARM: highbank: Add boot counter support
* ARM: highbank: add reset support
* ARM: highbank: setup env from boot source register
* ARM: highbank: change TEXT_BASE to 0x8000
* ARM: highbank: add autoboot script files
* ARM: highbank: fix us_to_tick calculation
* ARM: highbank: update autoboot bootdelay value
[ Jason Hobbs ]
* configs/highbank.h: point at env in nvram
* configs/highbank.h: correct the fdt_addr env variable
[ Robie Basak ]
* OMAP4: Force PXE booting when booting via spl-usb (LP: 927956)