88 lines
1.7 KiB
Bash
88 lines
1.7 KiB
Bash
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#
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# Copyright (C) 2016 lede-project.org
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#
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zyxel_get_rootfs() {
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local rootfsdev
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if read cmdline < /proc/cmdline; then
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case "$cmdline" in
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*root=*)
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rootfsdev="${cmdline##*root=}"
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rootfsdev="${rootfsdev%% *}"
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;;
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esac
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echo "${rootfsdev}"
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fi
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}
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zyxel_do_flash() {
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local tar_file=$1
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local board=$2
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local kernel=$3
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local rootfs=$4
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# keep sure its unbound
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losetup --detach-all || {
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echo Failed to detach all loop devices. Skip this try.
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reboot -f
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}
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echo "flashing kernel to /dev/${kernel}"
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tar xf $tar_file sysupgrade-$board/kernel -O >/dev/$kernel
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echo "flashing rootfs to ${rootfs}"
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tar xf $tar_file sysupgrade-$board/root -O >"${rootfs}"
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# a padded rootfs is needed for overlay fs creation
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local offset=$(tar xf $tar_file sysupgrade-$board/root -O | wc -c)
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[ $offset -lt 65536 ] && {
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echo Wrong size for rootfs: $offset
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sleep 10
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reboot -f
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}
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# Mount loop for rootfs_data
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losetup -o $offset /dev/loop0 "${rootfs}" || {
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echo "Failed to mount looped rootfs_data."
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sleep 10
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reboot -f
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}
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echo "Format new rootfs_data at position ${offset}."
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mkfs.ext4 -F -L rootfs_data /dev/loop0
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mkdir /tmp/new_root
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mount -t ext4 /dev/loop0 /tmp/new_root && {
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echo "Saving config to rootfs_data at position ${offset}."
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cp -v /tmp/sysupgrade.tgz /tmp/new_root/
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umount /tmp/new_root
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}
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# Cleanup
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losetup -d /dev/loop0 >/dev/null 2>&1
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sync
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umount -a
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reboot -f
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}
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zyxel_do_upgrade() {
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local tar_file="$1"
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local board=$(cat /tmp/sysinfo/board_name)
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local rootfs="$(zyxel_get_rootfs)"
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local kernel=
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[ -b "${rootfs}" ] || return 1
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case "$board" in
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nbg6817)
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kernel=mmcblk0p4
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;;
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*)
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return 1
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esac
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zyxel_do_flash $tar_file $board $kernel $rootfs
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return 0
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}
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