cns3xxx: add sysupgrade support

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

 target/linux/cns3xxx/base-files/lib/cns3xxx.sh          |   22 ++
 target/linux/cns3xxx/base-files/lib/upgrade/platform.sh |  122 ++++++++++++++++
 target/linux/cns3xxx/image/Makefile                     |   19 +-
 3 files changed, 159 insertions(+), 4 deletions(-)

SVN-Revision: 33650

2 files changed, 144 insertions, 0 deletions

diff --git a/target/linux/cns3xxx/base-files/lib/cns3xxx.sh b/target/linux/cns3xxx/base-files/lib/cns3xxx.sh
new file mode 100644
index 0000000000..d446777c02
--- /dev/null
+++ b/target/linux/cns3xxx/base-files/lib/cns3xxx.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+#
+# Copyright (C) 2012 OpenWrt.org
+#
+
+cns3xxx_board_name() {
+        local machine
+        local name
+
+        machine=$(awk 'BEGIN{FS="[ \t]+:[ \t]"} /Hardware/ {print $2}' /proc/cpuinfo)
+
+        case "$machine" in
+		"Gateworks Corporation Laguna"*)
+			name="laguna"
+			;;
+		*)
+			name="generic";
+			;;
+	esac
+	
+	echo $name
+}
diff --git a/target/linux/cns3xxx/base-files/lib/upgrade/platform.sh b/target/linux/cns3xxx/base-files/lib/upgrade/platform.sh
new file mode 100644
index 0000000000..599099181d
--- /dev/null
+++ b/target/linux/cns3xxx/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,122 @@
+. /lib/cns3xxx.sh
+
+RAMFS_COPY_DATA="/lib/cns3xxx.sh"
+
+CI_BLKSZ=65536
+
+platform_find_partitions() {
+	local first dev size erasesize name
+	while read dev size erasesize name; do
+		name=${name#'"'}; name=${name%'"'}
+		case "$name" in
+			vmlinux.bin.l7|kernel|linux|rootfs)
+				if [ -z "$first" ]; then
+					first="$name"
+				else
+					echo "$erasesize:$first:$name"
+					break
+				fi
+			;;
+		esac
+	done < /proc/mtd
+}
+
+platform_find_kernelpart() {
+	local part
+	for part in "${1%:*}" "${1#*:}"; do
+		case "$part" in
+			vmlinux.bin.l7|kernel|linux)
+				echo "$part"
+				break
+			;;
+		esac
+	done
+}
+
+platform_do_upgrade_combined() {
+	local partitions=$(platform_find_partitions)
+	local kernelpart=$(platform_find_kernelpart "${partitions#*:}")
+	local erase_size=$((0x${partitions%%:*})); partitions="${partitions#*:}"
+	local kern_length=0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)
+	local kern_blocks=$(($kern_length / $CI_BLKSZ))
+	local root_blocks=$((0x$(dd if="$1" bs=2 skip=5 count=4 2>/dev/null) / $CI_BLKSZ))
+
+	v "platform_do_upgrade_combined"
+	v "partitions=$partitions"
+	v "kernelpart=$kernelpart"
+	v "erase_size=$erase_size" 
+	v "kern_blocks=$kern_blocks"
+	v "root_blocks=$root_blocks"
+
+	if [ -n "$partitions" ] && [ -n "$kernelpart" ] && \
+	   [ ${kern_blocks:-0} -gt 0 ] && \
+	   [ ${root_blocks:-0} -gt 0 ] && \
+	   [ ${erase_size:-0} -gt 0 ];
+	then
+		local append=""
+		[ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
+
+		dd if="$1" bs=$CI_BLKSZ skip=1 count=$kern_blocks 2>/dev/null | mtd write - kernel
+		dd if="$1" bs=$CI_BLKSZ skip=$((1+$kern_blocks)) count=$root_blocks 2>/dev/null | \
+				 mtd -r $append write - rootfs
+	else
+		echo "invalid image"
+	fi
+}
+
+platform_check_image() {
+	local board=$(cns3xxx_board_name)
+	local magic="$(get_magic_word "$1")"
+	local magic_long="$(get_magic_long "$1")"
+
+	[ "$ARGC" -gt 1 ] && return 1
+
+	case "$board" in
+	laguna)
+		[ "$magic" != "4349" ] && {
+			echo "Invalid image. Use *-sysupgrade.bin files on this board"
+			return 1
+		}
+
+		local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
+		local md5_chk=$(dd if="$1" bs=$CI_BLKSZ skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
+
+		if [ -n "$md5_img" -a -n "$md5_chk" ] && [ "$md5_img" = "$md5_chk" ]; then
+			return 0
+		else
+			echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"
+			return 1
+		fi
+		return 0
+		;;
+	esac
+
+	echo "Sysupgrade is not yet supported on $board."
+	return 1
+}
+
+platform_do_upgrade() {
+	local board=$(cns3xxx_board_name)
+
+	v "board=$board"
+	case "$board" in
+	laguna)
+		platform_do_upgrade_combined "$ARGV"
+		;;
+	*)
+		default_do_upgrade "$ARGV"
+		;;
+	esac
+}
+
+disable_watchdog() {
+	v "killing watchdog"
+	killall watchdog
+	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
+		echo 'Could not disable watchdog'
+		return 1
+	}
+}
+
+# CONFIG_WATCHDOG_NOWAYOUT=y - can't kill watchdog unless kernel cmdline has a mpcore_wdt.nowayout=0
+#append sysupgrade_pre_upgrade disable_watchdog