Raspberry Pi 3 support

[Ryan Finnie]

Note that this makes a few assumptions:

1) Will not work as-is (but is safe to apply); updated u-boot (Debian: #823524) and linux-firmware-raspi2 (LP: #1578745) will also be required to take advantage of booting on the RPi3. Details at https://wiki.ubuntu.com/ARM/RaspberryPi/RaspberryPi3

2) For some reason, u-boot mkenvimage creates a uboot.env using the RPi2 config which u-boot HEAD just doesn't read, citing a CRC error. This occurs even when using mkenvimage from HEAD. I'm still trying to determine if it's a bug with u-boot, but boot.scr works fine. I've translated the uboot.env to its equivalent boot.scr script and it works fine, so I don't see why we can't just use boot.scr on the RPi3. (saveenv within the u-boot shell writes a uboot.env which it can subsequently re-read, interestingly.)

3) The all.db entry, minus the move to boot.scr, is based on the RPi2 entry above, right down to the "XXX".

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "flash-kernel-3.0~rc.4ubuntu63.debdiff" seems to be a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. If the attachment isn't a patch, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.]

[Timo Jyrinki (timo-jyrinki)]

Thank you for the patch! I'll test its buildability and sponsor it.

At some point it would be nice to evaluate the big accumulated delta in Ubuntu's flash-kernel and rebase on Debian's https://tracker.debian.org/pkg/flash-kernel

[Launchpad Janitor (janitor)]

This bug was fixed in the package flash-kernel - 3.0~rc.4ubuntu63

---------------
flash-kernel (3.0~rc.4ubuntu63) yakkety; urgency=medium

  * Add Raspberry Pi 3 support (LP: #1578505)

 -- Ryan Finnie <email address hidden> Thu, 05 May 2016 06:04:00 +0000