[ar71xx] add experimental sysupgrade support

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16364 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
new file mode 100755 (executable)
index 0000000..fb61db6
--- /dev/null
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,45 @@
+#
+# Copyright (C) 2009 OpenWrt.org
+#
+
+. /lib/ar71xx.sh
+
+PART_NAME=firmware
+
+platform_check_image() {
+       local board=$(ar71xx_board_name)
+       local magic="$(get_magic_word "$1")"
+
+       [ "$ARGC" -gt 1 ] && return 1
+
+       case "$board" in
+       ap83 | mzk-w04nu | mzk-w300nh | tew-632brp | wrt-400n)
+               [ "$magic" != "2705" ] && {
+                       echo "Invalid image type."
+                       return 1
+               }
+               return 0
+               ;;
+       tl-wr941nd)
+               [ "$magic" != "0100" ] && {
+                       echo "Invalid image type."
+                       return 1
+               }
+               return 0
+               ;;
+       esac
+
+       echo "Sysupgrade is not yet supported on $board."
+       return 1
+}
+
+# use default for platform_do_upgrade()
+
+disable_watchdog() {
+       killall watchdog
+       ( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
+               echo 'Could not disable watchdog'
+               return 1
+       }
+}
+append sysupgrade_pre_upgrade disable_watchdog