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WIP: Use Debian kernel and u-boot for Raspberry Pi 2

James Valleroy requested to merge jvalleroy:boot-firmware into master

I haven't been able to get this to actually boot yet, so further changes may be required.

  • Create /boot/firmware partition as vfat
  • Use ext2 for /boot
  • Use u-boot-rpi and armmp kernel
  • Use flash-kernel to copy kernel to /boot

Notes:

  • There is a different u-boot binary for Raspberry Pi 3, so we will likely need a separate image for it.
  • I thought flash-kernel should be triggered automatically at install, but that wasn't happening. Will need to investigate further.

The partition table looks like this:

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  134MB   133MB   primary  fat16
 2      160MB   282MB   122MB   primary  ext2         boot
 3      282MB   3799MB  3517MB  primary  btrfs

Here are the files under /boot: /boot/lost+found /boot/dtb-4.9.0-2-armmp /boot/System.map-4.9.0-2-armmp /boot/vmlinuz-4.9.0-2-armmp /boot/dtbs /boot/dtbs/4.9.0-2-armmp /boot/dtbs/4.9.0-2-armmp/bcm2836-rpi-2-b.dtb /boot/dtb /boot/boot.scr /boot/initrd.img-4.9.0-2-armmp /boot/config-4.9.0-2-armmp /boot/firmware /boot/firmware/start.elf /boot/firmware/start_cd.elf /boot/firmware/start_db.elf /boot/firmware/start_x.elf /boot/firmware/bootcode.bin /boot/firmware/fixup.dat /boot/firmware/fixup_cd.dat /boot/firmware/fixup_db.dat /boot/firmware/fixup_x.dat /boot/firmware/.firmware_revision /boot/firmware/kernel.img

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