Add new way of flashing to mmc devices based on rootfs split with loop devices. Signed-off-by: André Valentin <avalentin@marcant.net>master
parent
d8059e3a30
commit
1465bebd74
@ -0,0 +1,87 @@ |
||||
# |
||||
# Copyright (C) 2016 lede-project.org |
||||
# |
||||
|
||||
zyxel_get_rootfs() { |
||||
local rootfsdev |
||||
|
||||
if read cmdline < /proc/cmdline; then |
||||
case "$cmdline" in |
||||
*root=*) |
||||
rootfsdev="${cmdline##*root=}" |
||||
rootfsdev="${rootfsdev%% *}" |
||||
;; |
||||
esac |
||||
|
||||
echo "${rootfsdev}" |
||||
fi |
||||
} |
||||
|
||||
zyxel_do_flash() { |
||||
local tar_file=$1 |
||||
local board=$2 |
||||
local kernel=$3 |
||||
local rootfs=$4 |
||||
|
||||
# keep sure its unbound |
||||
losetup --detach-all || { |
||||
echo Failed to detach all loop devices. Skip this try. |
||||
reboot -f |
||||
} |
||||
|
||||
echo "flashing kernel to /dev/${kernel}" |
||||
tar xf $tar_file sysupgrade-$board/kernel -O >/dev/$kernel |
||||
|
||||
echo "flashing rootfs to ${rootfs}" |
||||
tar xf $tar_file sysupgrade-$board/root -O >"${rootfs}" |
||||
|
||||
# a padded rootfs is needed for overlay fs creation |
||||
local offset=$(tar xf $tar_file sysupgrade-$board/root -O | wc -c) |
||||
[ $offset -lt 65536 ] && { |
||||
echo Wrong size for rootfs: $offset |
||||
sleep 10 |
||||
reboot -f |
||||
} |
||||
|
||||
# Mount loop for rootfs_data |
||||
losetup -o $offset /dev/loop0 "${rootfs}" || { |
||||
echo "Failed to mount looped rootfs_data." |
||||
sleep 10 |
||||
reboot -f |
||||
} |
||||
|
||||
echo "Format new rootfs_data at position ${offset}." |
||||
mkfs.ext4 -F -L rootfs_data /dev/loop0 |
||||
mkdir /tmp/new_root |
||||
mount -t ext4 /dev/loop0 /tmp/new_root && { |
||||
echo "Saving config to rootfs_data at position ${offset}." |
||||
cp -v /tmp/sysupgrade.tgz /tmp/new_root/ |
||||
umount /tmp/new_root |
||||
} |
||||
|
||||
# Cleanup |
||||
losetup -d /dev/loop0 >/dev/null 2>&1 |
||||
sync |
||||
umount -a |
||||
reboot -f |
||||
} |
||||
|
||||
zyxel_do_upgrade() { |
||||
local tar_file="$1" |
||||
local board=$(cat /tmp/sysinfo/board_name) |
||||
local rootfs="$(zyxel_get_rootfs)" |
||||
local kernel= |
||||
|
||||
[ -b "${rootfs}" ] || return 1 |
||||
case "$board" in |
||||
nbg6817) |
||||
kernel=mmcblk0p4 |
||||
;; |
||||
*) |
||||
return 1 |
||||
esac |
||||
|
||||
zyxel_do_flash $tar_file $board $kernel $rootfs |
||||
|
||||
return 0 |
||||
} |
Loading…
Reference in new issue