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#
# Copyright (C) 2014-2015 OpenWrt.org
#
linksys_get_target_firmware() {
local cur_boot_part mtd_ubi0
cur_boot_part=`/usr/sbin/fw_printenv -n boot_part`
if [ -z "${cur_boot_part}" ] ; then
mtd_ubi0=$(cat /sys/devices/virtual/ubi/ubi0/mtd_num)
case $(egrep ^mtd${mtd_ubi0}: /proc/mtd | cut -d '"' -f 2) in
kernel1|rootfs1)
cur_boot_part=1
;;
kernel2|rootfs2)
cur_boot_part=2
;;
esac
>&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
"${cur_boot_part}" "${mtd_ubi0}"
fi
case $cur_boot_part in
1)
fw_setenv -s - <<-EOF
boot_part 2
bootcmd "run altnandboot"
EOF
printf "kernel2"
return
;;
2)
fw_setenv -s - <<-EOF
boot_part 1
bootcmd "run nandboot"
EOF
printf "kernel1"
return
;;
*)
return
;;
esac
}
linksys_get_root_magic() {
(get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
}
platform_do_upgrade_linksys() {
local magic_long="$(get_magic_long "$1")"
mkdir -p /var/lock
local part_label="$(linksys_get_target_firmware)"
touch /var/lock/fw_printenv.lock
if [ ! -n "$part_label" ]
then
echo "cannot find target partition"
exit 1
fi
local target_mtd=$(find_mtd_part $part_label)
[ "$magic_long" = "73797375" ] && {
CI_KERNPART="$part_label"
if [ "$part_label" = "kernel1" ]
then
CI_UBIPART="rootfs1"
else
CI_UBIPART="rootfs2"
fi
nand_upgrade_tar "$1"
}
[ "$magic_long" = "27051956" -o "$magic_long" = "0000a0e1" ] && {
# check firmwares' rootfs types
local target_mtd=$(find_mtd_part $part_label)
local oldroot="$(linksys_get_root_magic $target_mtd)"
local newroot="$(linksys_get_root_magic "$1")"
if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
# we're upgrading from a firmware with UBI to one with UBI
then
# erase everything to be safe
mtd erase $part_label
get_image "$1" | mtd -n write - $part_label
else
get_image "$1" | mtd write - $part_label
fi
}
}
platform_copy_config_linksys() {
cp -f "$CONF_TAR" "/tmp/syscfg/$BACKUP_FILE"
sync
}
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