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| author | Stefan Lippers-Hollmann <s.l-h@gmx.de> | 2018-01-18 22:41:44 +0100 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2018-02-13 12:45:00 +0100 |
| commit | 4baffa02ce2f3b04be37628f0965b0bade5019cf (patch) | |
| tree | 01a901999bd054844bf4b0707045773d95c67fef | |
| parent | 42fe7b3bbe682fc7902580226986abe10ffee8ea (diff) | |
| download | mtk-20170518-4baffa02ce2f3b04be37628f0965b0bade5019cf.zip mtk-20170518-4baffa02ce2f3b04be37628f0965b0bade5019cf.tar.gz mtk-20170518-4baffa02ce2f3b04be37628f0965b0bade5019cf.tar.bz2 | |
ipq806x: switch to full dual-boot for the nbg6817 sysupgrade support
Instead of writing to the currently booted partition set, this
implements full dual-boot support for sysupgrade by always writing to
the other, currently inactive, partition set and toggling the dualflag
after a successful flash.
The currently active/ booted partition set is determined by parsing
/proc/cmdline for its rootfs parameter (supplied by the DTS), instead
of reading from the 0:DUAL_FLAG mtd, in order to prevent (potentially)
bricking both partition sets.
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
| -rw-r--r-- | target/linux/ipq806x/base-files/lib/upgrade/zyxel.sh | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/target/linux/ipq806x/base-files/lib/upgrade/zyxel.sh b/target/linux/ipq806x/base-files/lib/upgrade/zyxel.sh index cf2acfc..ba8e825 100644 --- a/target/linux/ipq806x/base-files/lib/upgrade/zyxel.sh +++ b/target/linux/ipq806x/base-files/lib/upgrade/zyxel.sh @@ -21,6 +21,7 @@ zyxel_do_flash() { local tar_file=$1 local kernel=$2 local rootfs=$3 + local dualflagmtd=$4 # keep sure its unbound losetup --detach-all || { @@ -63,6 +64,16 @@ zyxel_do_flash() { umount /tmp/new_root } + # flashing successful, toggle the dualflag + case "$rootfs" in + "/dev/mmcblk0p5") + printf "\xff" >$dualflagmtd + ;; + "/dev/mmcblk0p8") + printf "\x01" >$dualflagmtd + ;; + esac + # Cleanup losetup -d $loopdev >/dev/null 2>&1 sync @@ -79,12 +90,21 @@ zyxel_do_upgrade() { [ -b "${rootfs}" ] || return 1 case "$board" in zyxel,nbg6817) + local dualflagmtd="$(find_mtd_part 0:DUAL_FLAG)" + [ -b $dualflagmtd ] || return 1 + case "$rootfs" in "/dev/mmcblk0p5") - kernel="/dev/mmcblk0p4" + # booted from the primary partition set + # write to the alternative set + kernel="/dev/mmcblk0p7" + rootfs="/dev/mmcblk0p8" ;; "/dev/mmcblk0p8") - kernel="/dev/mmcblk0p7" + # booted from the alternative partition set + # write to the primary set + kernel="/dev/mmcblk0p4" + rootfs="/dev/mmcblk0p5" ;; *) return 1 @@ -96,7 +116,7 @@ zyxel_do_upgrade() { ;; esac - zyxel_do_flash $tar_file $kernel $rootfs + zyxel_do_flash $tar_file $kernel $rootfs $dualflagmtd return 0 } |