This adds support for sysupgrade on ONIE-installed systems.
The install is chained through ONIE (using the ONIE installer image),
rather than attempting to manually upgrade the partition.
The idea is to allow future OpenWRT installs flexibility to use
a different partition table. By putting the installer in charge
of setting up the file system partition, the upgrade process needs
to have no knowledge of the internals of the image.
Config preservation is accomplished by appending the sysupgrade .tar.gz
to the ONIE installer image. Of course this also works for a clean
install using a sysupgrade.tar.gz created via `sysupgrade -b`.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: Keno Fischer <keno@juliahub.com>
Link: https://github.com/openwrt/openwrt/pull/23062
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
The current documentation for using OpenWRT on Mellanox Spectrum
switches (https://openwrt.org/toh/mellanox/spectrum) suggests
reflashing the entire harddrive from the recovery USB. This is not
the most friendly way to install a new OS on these switches. From
factory, they come with ONIE (Open Network Install Environment),
which is a linux-based preboot environment for fetching an OS
image from the network and installing it on disk. The installer
is a self-executing bash script that executes inside the ONIE
environment. The installer is expected to preserve the ONIE partition
for use as recovery environement. To be a better citizen on
these platforms, it would be preferrable to provide OpenWRT as
an ONIE-compatible installer.
This PR adds an ONIE_INSTALLER_IMAGES build option that produces
an ONIE compatible .bin. The generated .bin follows the ONIE demo
installer pattern [1]: it creates a new GPT partition
labelled OPENWRT-ROOT on the ONIE install device, formats ext4, extracts
the OpenWrt rootfs and kernel into it, installs GRUB into the existing
UEFI ESP under bootloader-id "OpenWrt", and adds a NVRAM boot entry via
efibootmgr. ONIE-BOOT is preserved so ONIE rescue remains available.
Tested with the config at [2] on a Mellanox Spectrum SN3800 to produce
a booting OpenWRT install.
[1] https://github.com/opencomputeproject/onie/demo/installer/grub-arch/install.sh
[2] https://gist.github.com/Keno/abc8c5b72645e73fadd1ff0d9616b23d
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: Keno Fischer <keno@juliahub.com>
Link: https://github.com/openwrt/openwrt/pull/23062
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
