[Bug 2092205] [NEW] Using /etc/flash-kernel/machine in risc-v images does not permit building generic images

[Adriano Cordova Fedeli]

Public bug reported:

In live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi-non-cloud.binar we
currently write file /etc/flash-kernel/machine to control which device-
tree is copied to /boot and in subsequently to generate a devicetree
comand in grub.cfg.

We have only one image for the VisionFive 2 board but there are two
revisions (1.2A, 1.3B) which require different device-trees.

Instead of wrigint /etc/flash-kernel/machine, all device-trees of the
current kernel could be copied to /boot/efi/dts/. U-Boot will then
search this directory for a file called $filename and load it. Whenever
the kernel will be updated, flash-kernel will copy the updated device-
tree to /boot and GRUB will pick it up.

** Affects: livecd-rootfs (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  Using /etc/flash-kernel/machine in risc-v images does not  permit
  building generic images

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  In live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi-non-cloud.binar
  we currently write file /etc/flash-kernel/machine to control which
  device-tree is copied to /boot and in subsequently to generate a
  devicetree comand in grub.cfg.

  We have only one image for the VisionFive 2 board but there are two
  revisions (1.2A, 1.3B) which require different device-trees.

  Instead of wrigint /etc/flash-kernel/machine, all device-trees of the
  current kernel could be copied to /boot/efi/dts/. U-Boot will then
  search this directory for a file called $filename and load it.
  Whenever the kernel will be updated, flash-kernel will copy the
  updated device-tree to /boot and GRUB will pick it up.

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