[Bug 1761483] Re: Firmware needs updating for new pi 3 B+

[Łukasz Zemczak]

Sponsored for bionic, waiting for SRU team approval. Note to SRU
reviewers: this upload, along with the main firmware bump, also includes
the addition of bluetooth firmware. This change, being part of the
backport, has no effect on the images at all (so no risk of introducing
a regression) but might be useful for the future when we decide to
backport the bluetooth enablement pieces.

** Also affects: linux-firmware-raspi2 (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: raspi3-firmware (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux-firmware-raspi2 (Ubuntu)
       Status: In Progress => Fix Released

** Changed in: linux-firmware-raspi2 (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: linux-firmware-raspi2 (Ubuntu Bionic)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1761483

Title:
  Firmware needs updating for new pi 3 B+

Status in linux-firmware-raspi2 package in Ubuntu:
  Fix Released
Status in raspi3-firmware package in Ubuntu:
  New
Status in linux-firmware-raspi2 source package in Bionic:
  In Progress
Status in raspi3-firmware source package in Bionic:
  New

Bug description:
  [Impact]

   * The bionic release currently cannot boot on certain pi models (3B+, CM3+) due to outdated firmware.
   * This is fixed in the disco and eoan releases with firmware revision 20190215, however it would be nice to enable booting on these platforms for the current LTS release.

  [Test Case]

   * Attempt to boot the current bionic release on a CM3+; it never gets past the rainbow screen.
   * Flash same image onto a CM3; it boots successfully.
   * Upgrade linux-firmware-raspi2 to the proposed revision. Reboot to ensure CM3 still boots successfully.
   * dd image onto CM3+
   * CM3+ should now boot successfully.

  [Regression Potential]

   * Minimal regression potential; I've tested the updated firmware with
  bionic on a 3B, 3B+, CM3, and CM3+ (to ensure it fixes the issue on
  the plus platforms, and doesn't regress on the others). All boot
  successfully with the updated firmware.

  [Other Info]

   * Tested with built package (linux-firmware-raspi2 1.20190215-0ubuntu4) in https://launchpad.net/~waveform/+archive/ubuntu/pkg
   * I can attach a debdiff if required, but I'm not sure how useful it'll be given that the important changes are simply updated binary blobs.
   * This is not the very latest firmware available from the github.com/raspberrypi/firmware repo (the very latest includes support for the pi4), but this is intentional (issues have been discovered when testing with the very latest firmware).

  
  Original description:

  A new raspberry pi (the 3 B+) was released in March 2018.  To enable
  this to boot the firmware needs updating to the latest version.

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