[Bug 1765628] Re: Create an image for all raspberry models

[Oliver Grawert]

note that we have the ability to build unified UbuntuCore images, but to
my knowledge nobody works on support for this in classic ubuntu images
(server/desktop) ...

the source for the Core gadget is at

https://github.com/ogra1/pi-kiosk-gadget

more details are at:

https://forum.snapcraft.io/t/rfc-single-universal-raspberry-pi-gadget-
and-image/6634

a demo appliance image (for a digital signage demo) using this setup can
be found at:

http://people.canonical.com/~ogra/snappy/kiosk/dashkiosk-server.img.xz

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https://bugs.launchpad.net/bugs/1765628

Title:
  Create an image for all raspberry models

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  Currently (Xenial to Bionic) server images only run on the raspberry
  pi 2.  This is due to the u-boot bootloader.

  However it is possible to produce one image that runs on a pi 2 and 3.
  Fedora arm 32 bit produce such an image.  They make use of conditional
  filters in the config.txt
  (https://www.raspberrypi.org/documentation/configuration/config-
  txt/conditional.md ) and put two versions of u-boot on the image.

  They other way to do it is to remove u-boot entirely and just rely on
  the internal pi bootloader to sort it out.  This could be permanent,
  or just for first boot where upon flash-installer is called to install
  the correct u-boot file.

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