2 # Copyright (C) 2014 OpenWrt.org
5 linksys_get_target_firmware
() {
7 local cur_boot_part mtd_ubi0
9 cur_boot_part
=$
(/usr
/sbin
/fw_printenv
-n boot_part
)
10 if [ -z "${cur_boot_part}" ] ; then
11 mtd_ubi0
=$
(cat /sys
/devices
/virtual
/ubi
/ubi
0/mtd_num
)
12 case $
(egrep ^mtd
${mtd_ubi0}: /proc
/mtd | cut
-d '"' -f 2) in
16 alt_kernel|alt_rootfs
)
20 >&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
21 "${cur_boot_part}" "${mtd_ubi0}"
24 case $cur_boot_part in
28 bootcmd "run altnandboot"
36 bootcmd "run nandboot"
47 linksys_get_root_magic
() {
48 (get_image
"$@" |
dd skip
=786432 bs
=4 count
=1 |
hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev
/null
51 platform_do_upgrade_linksys
() {
52 local magic_long
="$(get_magic_long "$1")"
55 local part_label
="$(linksys_get_target_firmware)"
56 touch /var
/lock
/fw_printenv.lock
58 if [ ! -n "$part_label" ]
60 echo "cannot find target partition"
64 local target_mtd
=$
(find_mtd_part
$part_label)
66 [ "$magic_long" = "73797375" ] && {
67 CI_KERNPART
="$part_label"
68 if [ "$part_label" = "kernel1" ]
77 [ "$magic_long" = "27051956" ] && {
78 # check firmwares' rootfs types
79 local target_mtd
=$
(find_mtd_part
$part_label)
80 local oldroot
="$(linksys_get_root_magic $target_mtd)"
81 local newroot
="$(linksys_get_root_magic "$1")"
83 if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
84 # we're upgrading from a firmware with UBI to one with UBI
86 # erase everything to be safe
88 get_image
"$1" | mtd
-n write - $part_label
90 get_image
"$1" | mtd
write - $part_label