2 # Copyright (C) 2015 OpenWrt.org
6 #Note: this code also uses some functions from nand.sh, but it is expected to be run by nand.sh, so we are not
7 #sourcing it explicitly here
9 UBNT_ERX_KERNEL_INDEX_OFFSET
=160
11 ubnt_get_target_kernel
() {
13 local current_kernel_index
=$
(hexdump -s $UBNT_ERX_KERNEL_INDEX_OFFSET -n 1 -e '/1 "%X "' ${factory_mtd})
15 if [ $current_kernel_index == "0" ]; then
17 elif [ $current_kernel_index == "1" ]; then
22 ubnt_update_target_kernel
() {
26 local new_kernel_index
27 if [ $kernel_part == "kernel1" ]; then
28 new_kernel_index
="\x00"
29 elif [ $kernel_part == "kernel2" ]; then
30 new_kernel_index
="\x01"
32 echo 'Unknown kernel image index' >&2
36 if ! (echo -e $new_kernel_index |
dd of
=${factory_mtd} bs
=1 count
=1 seek
=$UBNT_ERX_KERNEL_INDEX_OFFSET); then
37 echo 'Failed to update kernel bootup index' >&2
42 platform_upgrade_ubnt_erx
() {
43 local factory_mtd
=$
(find_mtd_part factory
)
44 if [ -z "$factory_mtd" ]; then
45 echo "cannot find factory partition" >&2
49 local kernel_part
="$(ubnt_get_target_kernel ${factory_mtd})"
50 if [ -z "$kernel_part" ]; then
51 echo "cannot find factory partition" >&2
55 # This is a global defined in nand.sh, sets partition kernel will be flashed into
56 CI_KERNPART
=${kernel_part}
58 #Remove volume possibly left over from stock firmware
59 local ubidev
="$( nand_find_ubi "$CI_UBIPART" )"
60 if [ -z "$ubidev" ]; then
61 local mtdnum
="$( find_mtd_index "$CI_UBIPART" )"
62 if [ -z "$mtdnum" ]; then
63 echo "cannot find ubi mtd partition $CI_UBIPART" >&2
66 ubiattach
-m "$mtdnum"
68 ubidev
="$( nand_find_ubi "$CI_UBIPART" )"
70 if [ -n "$ubidev" ]; then
71 local troot_ubivol
="$( nand_find_volume $ubidev troot )"
72 [ -n "$troot_ubivol" ] && ubirmvol
/dev
/$ubidev -N troot || true
75 ubnt_update_target_kernel
${factory_mtd} ${kernel_part} ||
exit 1