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d94a3f328f
This replaces deprecated backticks by more versatile $(...) syntax. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
121 lines
2.5 KiB
Bash
121 lines
2.5 KiB
Bash
#
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# Copyright (C) 2014-2015 OpenWrt.org
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#
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linksys_get_target_firmware() {
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local cur_boot_part mtd_ubi0
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cur_boot_part=$(/usr/sbin/fw_printenv -n boot_part)
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if [ -z "${cur_boot_part}" ] ; then
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mtd_ubi0=$(cat /sys/devices/virtual/ubi/ubi0/mtd_num)
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case $(egrep ^mtd${mtd_ubi0}: /proc/mtd | cut -d '"' -f 2) in
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kernel1|rootfs1)
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cur_boot_part=1
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;;
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kernel2|rootfs2)
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cur_boot_part=2
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;;
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esac
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>&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
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"${cur_boot_part}" "${mtd_ubi0}"
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fi
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cur_boot_part=$(/usr/sbin/fw_printenv -n boot_part)
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case $cur_boot_part in
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1)
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fw_setenv -s - <<-EOF
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boot_part 2
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auto_recovery yes
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EOF
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printf "kernel2"
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return
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;;
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2)
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fw_setenv -s - <<-EOF
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boot_part 1
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auto_recovery yes
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EOF
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printf "kernel1"
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return
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;;
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*)
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return
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;;
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esac
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}
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linksys_get_root_magic() {
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(get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
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}
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platform_do_upgrade_linksys() {
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local magic_long="$(get_magic_long "$1")"
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mkdir -p /var/lock
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local part_label="$(linksys_get_target_firmware)"
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touch /var/lock/fw_printenv.lock
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if [ ! -n "$part_label" ]
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then
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echo "cannot find target partition"
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exit 1
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fi
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local target_mtd=$(find_mtd_part $part_label)
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[ "$magic_long" = "73797375" ] && {
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CI_KERNPART="$part_label"
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if [ "$part_label" = "kernel1" ]
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then
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CI_UBIPART="rootfs1"
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else
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CI_UBIPART="rootfs2"
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fi
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# remove "squashfs" vol (in case we are flashing over a stock image, which is also UBI)
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local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
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if [ ! "$mtdnum" ]; then
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echo "cannot find ubi mtd partition $CI_UBIPART"
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return 1
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fi
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local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
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if [ ! "$ubidev" ]; then
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ubiattach -m "$mtdnum"
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sync
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ubidev="$( nand_find_ubi "$CI_UBIPART" )"
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fi
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if [ "$ubidev" ]; then
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local squash_ubivol="$( nand_find_volume $ubidev squashfs )"
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# kill volume
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[ "$squash_ubivol" ] && ubirmvol /dev/$ubidev -N squashfs || true
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fi
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# complete std upgrade
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nand_upgrade_tar "$1"
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}
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[ "$magic_long" = "27051956" ] && {
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# check firmwares' rootfs types
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local oldroot="$(linksys_get_root_magic $target_mtd)"
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local newroot="$(linksys_get_root_magic "$1")"
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if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
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# we're upgrading from a firmware with UBI to one with UBI
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then
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# erase everything to be safe
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mtd erase $part_label
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get_image "$1" | mtd -n write - $part_label
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else
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get_image "$1" | mtd write - $part_label
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fi
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}
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}
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