[Bug 1850678] Re: flash-kernel only updates the dtb of the Pi it's on

[Łukasz Zemczak]

** Also affects: flash-kernel (Ubuntu Eoan)
   Importance: Undecided
       Status: New

** Also affects: flash-kernel (Ubuntu Bionic)
   Importance: Undecided
       Status: New

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Title:
  flash-kernel only updates the dtb of the Pi it's on

Status in flash-kernel package in Ubuntu:
  Fix Released
Status in flash-kernel source package in Bionic:
  New
Status in flash-kernel source package in Eoan:
  New

Bug description:
  Specific to the Raspberry Pi, when flash-kernel is executed to copy
  things to the boot partition, only the dtb of the Pi that it is being
  executed on is copied. In order to support moving the SD card between
  Pi models, flash-kernel needs to copy *all* dtbs provided by the
  kernel to the boot partition.

  Consider the case of SRUing Pi 4 support to Bionic. Bionic does not
  currently support the Pi 4, so a user must necessarily boot their
  Bionic image on, say, a Pi 3. If they then upgrade to a kernel
  supporting the Pi 4, flash-kernel will only copy the dtb for the Pi 3
  to the boot partition. If the card is then moved to a Pi 4 it will
  fail to boot due to a missing device-tree.

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