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authorTony Ambardar <itugrok@yahoo.com>2022-12-01 18:00:30 -0800
committerHauke Mehrtens <hauke@hauke-m.de>2023-01-01 21:45:44 +0100
commitaf4f635eed28588994418bff3862b8bf34d54e7d (patch)
tree18e62b52681bdccf482d47ac20550af6d5b2e863
parent4bda308657bb39f3ad4a0d294a89ac867b8801a7 (diff)
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ipq40xx: sysupgrade: allow flashing Linksys factory firmware
Allow forced flashing of a factory firmware image, after checking for the correct FIT magic header and Linksys board-specific footer. Details of the footer are already described in scripts/linksys-image.sh. This is convenient as it avoids using a TFTP server or OEM GUI, and allows restoring OEM firmware or installing a "breaking" OpenWrt update (e.g DSA migration and kernel repartition) directly from the command line. Devices supported at this time include EA6350v3, EA8300, MR8300 and WHW01. Reviewed-by: Robert Marko <robimarko@gmail.com> Tested-by: Wyatt Martin <wawowl@gmail.com> # WHW01 Tested-by: Tony Ambardar <itugrok@yahoo.com> # EA6350v3 Signed-off-by: Tony Ambardar <itugrok@yahoo.com> (cherry picked from commit 6fc334cbdc2b1716786768c545b761b338962b43)
-rw-r--r--[-rwxr-xr-x]target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh18
1 files changed, 18 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh b/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh
index f1dc81f7c9..5d25c20ad7 100755..100644
--- a/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh
+++ b/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh
@@ -47,6 +47,14 @@ linksys_get_target_firmware() {
esac
}
+linksys_is_factory_image() {
+ local board=$(board_name)
+ board=${board##*,}
+
+ # check matching footer signature
+ tail -c 256 $1 | grep -q -i "\.LINKSYS\.........${board}"
+}
+
platform_do_upgrade_linksys() {
local magic_long="$(get_magic_long "$1")"
@@ -99,4 +107,14 @@ platform_do_upgrade_linksys() {
echo "writing \"$1\" image to \"$part_label\""
get_image "$1" | mtd write - "$part_label"
}
+
+ [ "$magic_long" = "d00dfeed" ] && {
+ if ! linksys_is_factory_image "$1"; then
+ echo "factory image doesn't match device"
+ return 1
+ fi
+
+ echo "writing \"$1\" factory image to \"$part_label\""
+ get_image "$1" | mtd -e "$part_label" write - "$part_label"
+ }
}