[Bug 2069802] Re: [SRU] flash-kernel to support xilinx kria platforms with noble kernel

[Talha Can Havadar]

We were a bit lucky in this instance, flash-kernel in oracular doesnt
have the same kernel-flavour entry as the kernel we have in noble so it
doesnt really changes bootscript during do-release-upgrade which kind of
works for us since with the new kernel we also changed the dtb file
locations which would cause flash-kernel to fail.

So with that in mind. I did update the flash-kernel in oracular with the one in oracular-proposed, and rebooted and also make sure that flash-kernel works as expected by executing it manually again, see below:
```

ubuntu at kria:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 24.10
Release:        24.10
Codename:       oracular
ubuntu at kria:~$ apt policy flash-kernel
flash-kernel:
  Installed: 3.107ubuntu13~24.10.1
  Candidate: 3.107ubuntu13~24.10.1
  Version table:
 *** 3.107ubuntu13~24.10.1 100
        100 http://ports.ubuntu.com/ubuntu-ports oracular-proposed/main arm64 Packages
        100 /var/lib/dpkg/status
     3.107ubuntu11 500
        500 http://ports.ubuntu.com/ubuntu-ports oracular/main arm64 Packages

ubuntu at kria:~$ sudo flash-kernel
[sudo] password for ubuntu: 
flash-kernel: installing version 6.8.0-1009-xilinx
Couldn't find DTB  on the following paths: /etc/flash-kernel/dtbs /usr/lib/linux-image-6.8.0-1009-xilinx /lib/firmware/6.8.0-1009-xilinx/device-tree/
Generating u-boot image... done.
Taking backup of image.fit.
Installing new image.fit.
Generating boot script u-boot image... done.
Taking backup of boot.scr.uimg.
Installing new boot.scr.uimg.

```

So I will mark the verification on oracular done as well.

** Tags removed: verification-needed-oracular
** Tags added: verification-done-oracular

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to flash-kernel in Ubuntu.
https://bugs.launchpad.net/bugs/2069802

Title:
  [SRU] flash-kernel to support xilinx kria platforms with noble kernel

Status in flash-kernel package in Ubuntu:
  Fix Released
Status in flash-kernel source package in Noble:
  Fix Committed
Status in flash-kernel source package in Oracular:
  Fix Committed

Bug description:
  [ Impact ]

   * With the current version of flash-kernel, users wont be able to
  boot into xilinx devices using optimised noble kernel because of the
  renaming of device-trees in kernel and cma configuration changes.

   * We need to fix this issue to keep support for xilinx devices in
  noble as well. This must not be back-ported into jammy since the
  kernel in jammy keeps the old names for device-trees and cma
  configuration in there didn't change

   * Patch will fix the issue by updating bootscript and `its` file to
  point correct device-tree files.

  [ Test Plan ]

   * Flash the new image generated with new flash-kernel that has this fix
   * Try booting with new image
   * You should be able to reach the login prompt and be able to login using default username and password
   * This must work for all Kria devices listed below:
    - KV260
    - KR260
    - KD240

  [ Where problems could occur ]
   * This change could only impact Xilinx Kria devices since it will only touch the files used by Xilinx Kria platforms including the ones listed above in test plan
   * Since this is an enablement patch for Ubuntu Noble image on Xilinx Kria platforms, there shouldnt be an impact to devices in the field.
   * If the patch is broken then the devices listed above will still continue to not work.

  [ Other Info ]
   
   * This is based on changes in new optimised kernel: https://code.launchpad.net/~canonical-kernel/ubuntu/+source/linux-xilinx/+git/noble

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/flash-kernel/+bug/2069802/+subscriptions