Methode uDPU and eDPU devices are one of the rare ones with a completely
custom image format being used with custom partition table with F2FS.
Instead of converting the boards to dual firmware (A/B style) and further
expand the already convoluted custom scripts, especially considering that
dual firmware conversion is a breaking change anyway, lets convert to using
the generic eMMC sysupgrade based images.
F2FS ZSTD compression is preserved thanks to fstools now supporting its use
on overlays.
Dual firmware support is implemented via U-Boot scripts so no U-Boot
upgrade is required.
Since there is a partition table layout change, eMMC must be wiped and
reflashed with the generated GPT image from OpenWrt initramfs.
Then on each sysupgrade the firmware slot will be altered.
Instructions:
1. Boot into OpenWrt initramfs
2. Copy openwrt-mvebu-cortexa53-methode_edpu-squashfs-emmc-gpt.img.gz to
the device into /tmp
3. Erase eMMC:
dd if=/dev/zero of=/dev/mmcblk0 bs=1M
4. Extract image
gzip -d /tmp/openwrt-mvebu-cortexa53-methode_edpu-squashfs-emmc-gpt.img.gz
5. Flash image
dd if=/tmp/openwrt-mvebu-cortexa53-methode_edpu-squashfs-emmc-gpt.img of=/dev/mmcblk0
6. Reboot
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reuse Device/FitImage recipe instead of open coding it and
drop duplicate KERNEL_INITRAMFS recipe for eDPU.
While at it, lets clean up the boot script to drop uneeded console
setting, earlycon etc.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Now that we can pass the desired compression via cmdline, pass ZSTD as the
desired compression algorithm for F2FS.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
This patch adds sysupgrade, uboot-env and networking support
for Methode uDPU device.
Device features 4 partitions:
-----------------------------------------
| boot | recovery | rootfs | misc |
| (ext4) | (ext4) | (fsf2) | (f2fs) |
_________________________________________
Idea was to use f2fs only but the u-boot currently lacks support
so first 2 partition are ext4 to be u-boot readable, and this was
a reason why custom build and sysupgrade sections were required.
On the sysupgrade, boot and rootfs partitions are updated, firmare
image and user configuration is saved on the misc partition and if
the upgrade was successfull, recovery partition will be updated on
after the reboot from preinit script. If the sysupgrade fails for any
reason, device will fallback to recovery initramfs image.
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
