[Bug 1805668] Re: Building armhf and arm64 Raspberry Pi 3 images

[Steve Langasek]

Hello Łukasz, or anyone else affected,

Accepted livecd-rootfs into bionic-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.525.11 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: livecd-rootfs (Ubuntu Bionic)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-bionic

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https://bugs.launchpad.net/bugs/1805668

Title:
  Building armhf and arm64 Raspberry Pi 3 images

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in raspi3-firmware package in Ubuntu:
  Fix Released
Status in u-boot package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Bionic:
  Fix Committed
Status in raspi3-firmware source package in Bionic:
  New
Status in u-boot source package in Bionic:
  New
Status in livecd-rootfs source package in Cosmic:
  Won't Fix
Status in raspi3-firmware source package in Cosmic:
  New
Status in u-boot source package in Cosmic:
  New

Bug description:
  [Impact]

  One of our long-term goals is to support the same set of platforms for both classical Ubuntu and ubuntu-core. We currently provide official images for the Raspberry Pi 3 for both the core16 and core18 bases but do not provide the same for Ubuntu classic.
  Since it's a 'feature' we're essentially lacking since long, we want to have the new device also supported in our current LTS (bionic).

  [Fix]

  For the classic raspi3 support we will be using the ubuntu-image classic image building tool which is specifically designed for creating preinstalled images. The support for that has already been SRUed in the latest ubuntu-image.
  For the full image build support to be complete, the following list of changes need to be backported (SRUed) into the respective stable series:

   * livecd-rootfs - all the changes regarding classic image build, gadget tree selection and raspi3 rootfs generation.
   * u-boot - bionic will need to be updated to at least 2018.03+dfsg1-2ubuntu2.
   * raspi3-firmware (bionic only) - needs to be updated to at least the version we have in cosmic. Without this change, the console is flooded with firmware error messages every 2 seconds.
   (vorlon) this should be updated specifically to the version of raspi3-firmware that we are using in the gadget snap - currently 1.20180919 - and not to another.

  [Test Case]

   * Run a bionic livefs build of raspi3+armhf with proposed enabled (IMAGEFORMAT=ubuntu-image and PROJECT=ubuntu-cpc), make sure the build succeeds and that the resulting image boots on a raspi3.
   * Run a bionic livefs build of raspi3+arm64 with proposed enabled (IMAGEFORMAT=ubuntu-image and PROJECT=ubuntu-cpc), make sure the build succeeds and that the resulting image boots on a raspi3.
   * Make sure that none of the other bionic daily images fail to build

  [Regression Potential]

  There is some potential that an invalid backport of livecd-rootfs
  functionality could result in the inability to create new ubuntu-core
  images or any of the other existing flavors. But in case of such a
  regression we would see it instantly after the package lands in
  bionic-proposed as we are building daily images with -proposed
  enabled. As for the other packages, there probably is some regression
  potential, but since the versions are backports from disco/cosmic, the
  risk is probably very small.

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