From c2cde63ae654185d2c117ec72c1837b683212734 Mon Sep 17 00:00:00 2001 From: Tim Lunn Date: Wed, 17 Apr 2024 12:51:22 +1000 Subject: [PATCH] rampis: mt7621: Edgerouter-X disable toggling of kernel slots MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Uboot selects which kernel slot to boot based on a flag in the factory mtd partition. Patch ubnt.sh to ensure always flash to kernel1 slot and update flag if required. Signed-off-by: Tim Lunn Tested-by: Mauri Sandberg Link: https://github.com/openwrt/openwrt/pull/15194 (cherry picked from commit 5e355f1f9084c1b6de3151fbcde948d736292d6c) Link: https://github.com/openwrt/openwrt/pull/17097 Signed-off-by: Petr Å tetiar --- .../mt7621/base-files/lib/upgrade/ubnt.sh | 39 ++++--------------- 1 file changed, 7 insertions(+), 32 deletions(-) diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/ubnt.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/ubnt.sh index 748ec8e628..7e9d937d79 100644 --- a/target/linux/ramips/mt7621/base-files/lib/upgrade/ubnt.sh +++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/ubnt.sh @@ -8,32 +8,16 @@ UBNT_ERX_KERNEL_INDEX_OFFSET=160 -ubnt_get_target_kernel() { +ubnt_update_kernel_flag() { local factory_mtd=$1 - local current_kernel_index=$(hexdump -s $UBNT_ERX_KERNEL_INDEX_OFFSET -n 1 -e '/1 "%X "' ${factory_mtd}) + local kernel_index=$(hexdump -s $UBNT_ERX_KERNEL_INDEX_OFFSET -n 1 -e '/1 "%X "' ${factory_mtd}) - if [ $current_kernel_index == "0" ]; then - echo 'kernel2' - elif [ $current_kernel_index == "1" ]; then - echo 'kernel1' - fi -} - -ubnt_update_target_kernel() { - local factory_mtd=$1 - local kernel_part=$2 - - local new_kernel_index - if [ $kernel_part == "kernel1" ]; then - new_kernel_index="\x00" - elif [ $kernel_part == "kernel2" ]; then - new_kernel_index="\x01" - else - echo 'Unknown kernel image index' >&2 - return 1 + if [ $kernel_index = "0" ]; then + echo "Kernel flag already set to kernel slot 1" + return 0 fi - if ! (echo -e $new_kernel_index | dd of=${factory_mtd} bs=1 count=1 seek=$UBNT_ERX_KERNEL_INDEX_OFFSET); then + if ! (echo -e "\x00" | dd of=${factory_mtd} bs=1 count=1 seek=$UBNT_ERX_KERNEL_INDEX_OFFSET); then echo 'Failed to update kernel bootup index' >&2 return 1 fi @@ -46,15 +30,6 @@ platform_upgrade_ubnt_erx() { exit 1 fi - local kernel_part="$(ubnt_get_target_kernel ${factory_mtd})" - if [ -z "$kernel_part" ]; then - echo "cannot find factory partition" >&2 - exit 1 - fi - - # This is a global defined in nand.sh, sets partition kernel will be flashed into - CI_KERNPART=${kernel_part} - #Remove volume possibly left over from stock firmware local ubidev="$( nand_find_ubi "$CI_UBIPART" )" if [ -z "$ubidev" ]; then @@ -72,7 +47,7 @@ platform_upgrade_ubnt_erx() { [ -n "$troot_ubivol" ] && ubirmvol /dev/$ubidev -N troot || true fi - ubnt_update_target_kernel ${factory_mtd} ${kernel_part} || exit 1 + ubnt_update_kernel_flag ${factory_mtd} || exit 1 nand_do_upgrade "$1" } -- 2.30.2