mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 08:21:14 +00:00
25382dff85
The purpose of this code seems to be to avoid issues caused by partially overwriting an existing UBI partition, where some of the erase counters would be reset but not the unmodified ones. This problem has been solved in a more generic way by the UBI EOF marker. This ensures that any old PEBs after the marker are properly initialized. It is therefore unnecessary to erase the whole partition before flashing a new OpenWrt factory image. Signed-off-by: Bjørn Mork <bjorn@mork.no>
77 lines
1.4 KiB
Bash
77 lines
1.4 KiB
Bash
#
|
|
# Copyright (C) 2014 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
|
|
kernel|rootfs)
|
|
cur_boot_part=1
|
|
;;
|
|
alt_kernel|alt_rootfs)
|
|
cur_boot_part=2
|
|
;;
|
|
esac
|
|
>&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
|
|
"${cur_boot_part}" "${mtd_ubi0}"
|
|
fi
|
|
|
|
case $cur_boot_part in
|
|
1)
|
|
fw_setenv -s - <<-EOF
|
|
boot_part 2
|
|
bootcmd "run altnandboot"
|
|
EOF
|
|
printf "kernel2"
|
|
return
|
|
;;
|
|
2)
|
|
fw_setenv -s - <<-EOF
|
|
boot_part 1
|
|
bootcmd "run nandboot"
|
|
EOF
|
|
printf "kernel1"
|
|
return
|
|
;;
|
|
*)
|
|
return
|
|
;;
|
|
esac
|
|
}
|
|
|
|
platform_do_upgrade_linksys() {
|
|
local magic_long="$(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" ] && {
|
|
get_image "$1" | mtd write - $part_label
|
|
}
|
|
}
|