Re-reading the partition table doesn't work reliably, it fails if
anything on the device is still in use and it's not trivial to prevent
every possible case of a block device still being in use somehow.
Therefore, instead of relying on the in-kernel partition parser to know
where to write the configuration backup, use OpenWrt's format-agnostic
fwtool to strip off all metadata from the image and count its blocks
while writing. In that way we can know where to write the config backup
without needing the kernel to parse the MBR and FIT structures.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Use find_mmc_part instead of previously introduced
get_partition_by_name which requires a custom kernel patch.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
In case of the block device still being in use, re-reading the
partition table fails. In that case, abort sysupgrade to avoid
corrupting the just-written image because of wrong offsets caused
by failure to re-read the partition table.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
* introduce recovery (=initramfs) vs. production dual boot scheme
* make use of uImage.FIT (instead of FAT partition)
* generate images using build steps (instead of external scripts)
* simplify sysupgrade and config restore (thanks to uImage.FIT)
* make sure mmc devices are ordered persistently (set DT aliases)
This commit breaks sysupgrade from existing installations, you will
have to re-install using the sdcard.img.gz image.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
An upcoming commit will add a full system image for U7623 which will
contain the MBR partition table and U-Boot too.
That contrasts with the current image which only owns the eMMC from
sector 0xa00 onwards, and must start with a legacy uImage.
Prepare for sysupgrade to the new images, and cope with the fact that
the recovery partition will be /dev/mmcblk0p2 instead of /dev/mmcblk0p1
after the upgrade.
This commit could potentially be backported to 19.07 to allow for direct
sysupgrade to the new image layout.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
I'm about to change the layout of the images for UniElec U7623 so make it
find the recovery partition based on which the root partition is too.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Like many boards, the Banana Pi R2 doesn't have permanant storage of
its MAC address, and we store the first random one that the kernel
generates in order to use it later and at least be consistent.
Store it in the FAT boot partition, just as the U7623 board (and others)
do.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This drops the shebang from all target files for /lib and
/etc/uci-defaults folders, as these are sourced and the shebang
is useless.
While at it, fix the executable flag on a few of these files.
This does not touch ar71xx, as this target is just used for
backporting now and applying cosmetic changes would just complicate
things.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This splits some base-files across subtargets, as done previously
on ath79 and ramips and also introduced for mt7629 subtarget here
already. Most of the existing base-files content is specific to
mt7623.
While at it, apply the following fixes:
- Remove lots of trailing whitespaces
- Remove wildcard on unielec,u7623-02-emmc-512m
- Remove inconsistent quotation marks in cases
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: John Crispin <john@phrozen.org>
