mtd: base-files: Unify dual-firmware devices (Linksys)

[openwrt/openwrt.git] / target / linux / mvebu / base-files / lib / upgrade / linksys.sh

diff --git a/target/linux/mvebu/base-files/lib/upgrade/linksys.sh b/target/linux/mvebu/base-files/lib/upgrade/linksys.sh
index aacaf55667e84f1c6bf98e9327f44c865ffc3d8c..3f45d6cac5e879f050442b76cf7b4270dc177207 100644 (file)
--- a/target/linux/mvebu/base-files/lib/upgrade/linksys.sh
+++ b/target/linux/mvebu/base-files/lib/upgrade/linksys.sh
@@ -3,26 +3,45 @@
 #
 
 linksys_get_target_firmware() {
+
+       local cur_boot_part mtd_ubi0
+
        cur_boot_part=`/usr/sbin/fw_printenv -n boot_part`
-       target_firmware=""
-       if [ "$cur_boot_part" = "1" ]
-       then
-               # current primary boot - update alt boot
-               target_firmware="kernel2"
-               fw_setenv boot_part 2
-               fw_setenv bootcmd "run altnandboot"
-       elif [ "$cur_boot_part" = "2" ]
-       then
-               # current alt boot - update primary boot
-               target_firmware="kernel1"
-               fw_setenv boot_part 1
-               fw_setenv bootcmd "run nandboot"
+       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
 
-       # re-enable recovery so we get back if the new firmware is broken
-       fw_setenv auto_recovery yes
-
-       echo "$target_firmware"
+       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() {