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Michael Pratt e823fb1763 ath79: add Senao 'failsafe' sysupgrade procedure
Use a similar upgrade method for sysupgrade.bin, like factory.bin,
for Senao boards with the tar.gz OEM upgrade platform,
and 'failsafe' image which is loaded on checksum failure.

This is inspired by the OEM upgrade script /etc/fwupgrade.sh
and the existing platforms for dual-boot Senao boards.

Previously, if the real kernel was damaged or missing
the only way to recover was with UART serial console,
because the OKLI lzma-loader is programmed to halt.

uboot did not detect cases where kernel or rootfs is damaged
and boots OKLI instead of the failsafe image,
because the checksums stored in uboot environment
did not include the real kernel and rootfs space.

Now, the stored checksums include the space for both
the lzma-loader, kernel, and rootfs.
Therefore, these boards are now practically unbrickable.

Also, the factory.bin and sysupgrade.bin are now the same,
except for image metadata.
This allows for flashing OEM image directly from openwrt
as well as flashing openwrt image directly from OEM.

Make 'loader' partition writable so that it can be updated
during a sysupgrade.

tested with
ENS202EXT v1
EAP1200H
EAP350 v1
EAP600
ECB350 v1
ECB600
ENH202 v1

Signed-off-by: Michael Pratt <mcpratt@pm.me>
(cherry picked from commit d5035f0d26)
2021-06-11 07:20:31 +02:00
.github build: Update README & github help 2018-07-08 09:41:53 +01:00
config build: use SPDX license tags 2021-02-05 14:54:47 +01:00
include kernel: bump 5.4 to 5.4.124 2021-06-06 17:54:51 +02:00
LICENSES LICENSES: include all used licenses in LICENSES directory 2021-02-14 19:21:38 +01:00
package ramips: add support for Linksys EA8100 v1 2021-06-10 17:09:35 +02:00
scripts build,json: backport default_packages fixes 2021-03-25 23:15:42 -10:00
target ath79: add Senao 'failsafe' sysupgrade procedure 2021-06-11 07:20:31 +02:00
toolchain glibc: update to latest 2.33 HEAD (BZ #27892) 2021-06-08 20:44:08 +02:00
tools ramips: add support for TP-Link Archer C6U v1 (EU) 2021-06-10 17:09:35 +02:00
.gitattributes add .gitattributes to prevent the git autocrlf option from messing with CRLF/LF in files 2012-05-08 13:30:49 +00:00
.gitignore gitignore: add .vscode for VS Code users 2021-03-29 22:26:27 +02:00
BSDmakefile build: use SPDX license tags 2021-02-05 14:54:47 +01:00
Config.in build: use SPDX license tags 2021-02-05 14:54:47 +01:00
COPYING COPYING: add COPYING file to specify project licenses 2021-02-14 19:21:38 +01:00
feeds.conf.default OpenWrt v21.02.0-rc2: revert to branch defaults 2021-05-29 20:02:03 +02:00
Makefile Revert "build: replace which with Bash command built-in" 2021-03-03 23:02:30 +01:00
README.md build: add which command to build requirements 2021-03-03 23:03:25 +01:00
rules.mk build: make sure asm gets built with -DPIC 2021-04-10 15:05:18 +02:00

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