ixp4xx: add sysupgrade support

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

 target/linux/ixp4xx/base-files/lib/ixp4xx.sh           |   25 ++
 target/linux/ixp4xx/base-files/lib/upgrade/platform.sh |  156 +++++++++++++++++
 target/linux/ixp4xx/image/Makefile                     |   11 +
 3 files changed, 192 insertions(+)

SVN-Revision: 33828

target/linux/ixp4xx/base-files/lib/ixp4xx.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# Copyright (C) 2012 OpenWrt.org
+#
+
+ixp4xx_board_name() {
+        local machine
+        local name
+
+        machine=$(awk 'BEGIN{FS="[ \t]+:[ \t]"} /Hardware/ {print $2}' /proc/cpuinfo)
+
+        case "$machine" in
+		"Gateworks Cambria"*)
+			name="cambria"
+			;;
+		"Gateworks Avila"*)
+			name="avila"
+			;;
+		*)
+			name="generic";
+			;;
+	esac
+
+	echo $name
+}

target/linux/ixp4xx/base-files/lib/upgrade/platform.sh

@@ -0,0 +1,156 @@
+. /lib/ixp4xx.sh
+
+RAMFS_COPY_DATA="/lib/ixp4xx.sh"
+
+# testing
+RAMFS_COPY_BIN="/usr/bin/less /usr/bin/hexdump"
+
+CI_BLKSZ=65536
+CI_LDADR=0x00800000
+
+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_find_part_size() {
+	local first dev size erasesize name
+	while read dev size erasesize name; do
+		name=${name#'"'}; name=${name%'"'}
+		[ "$name" = "$1" ] && {
+			echo "$size"
+			break
+		}
+	done < /proc/mtd
+}
+
+platform_do_upgrade_combined() {
+	local partitions=$(platform_find_partitions)
+	local kernelpart=$(platform_find_kernelpart "${partitions#*:}")
+	local erase_size=$((0x${partitions%%:*})); partitions="${partitions#*:}"
+	local kern_part_size=0x$(platform_find_part_size "$kernelpart")
+	local kern_part_blocks=$(($kern_part_size / $CI_BLKSZ))
+	local kern_length=0x$(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=$kernelpart"
+	v "kernel_part_size=$kern_part_size"
+	v "kernel_part_blocks=$kern_part_blocks"
+	v "kern_length=$kern_length"
+	v "erase_size=$erase_size" 
+	v "kern_blocks=$kern_blocks"
+	v "root_blocks=$root_blocks"
+	v "kern_pad_blocks=$(($kern_part_blocks-$kern_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"
+
+		# write the kernel
+		dd if="$1" bs=$CI_BLKSZ skip=1 count=$kern_blocks 2>/dev/null | \
+			mtd -F$kernelpart:$kern_part_size:$CI_LDADR write - $kernelpart
+		# write the rootfs
+		dd if="$1" bs=$CI_BLKSZ skip=$((1+$kern_blocks)) count=$root_blocks 2>/dev/null | \
+			mtd $append write - rootfs
+	else
+		echo "invalid image"
+	fi
+}
+
+platform_check_image() {
+	local board=$(ixp4xx_board_name)
+	local magic="$(get_magic_word "$1")"
+	local partitions=$(platform_find_partitions)
+	local kernelpart=$(platform_find_kernelpart "${partitions#*:}")
+	local kern_part_size=0x$(platform_find_part_size "$kernelpart")
+	local kern_length=0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)
+
+	[ "$ARGC" -gt 1 ] && return 1
+
+	case "$board" in
+	avila | cambria )
+		[ "$magic" != "4349" ] && {
+			echo "Invalid image. Use *-sysupgrade.bin files on this board"
+			return 1
+		}
+
+		kern_length_b=$(printf '%d' $kern_length)
+		kern_part_size_b=$(printf '%d' $kern_part_size)
+		if [ $kern_length_b -gt $kern_part_size_b ]; then
+			echo "Invalid image. Kernel size ($kern_length) exceeds kernel partition ($kern_part_size)"
+			return 1
+		fi 
+
+		local md5_img=$(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 $board."
+	return 1
+}
+
+platform_do_upgrade() {
+	local board=$(ixp4xx_board_name)
+
+	v "board=$board"
+	case "$board" in
+	avila | cambria )
+		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

target/linux/ixp4xx/image/Makefile

@@ -40,8 +40,19 @@ define Image/BuildKernel
 	BIN_DIR=$(BIN_DIR) IMG_PREFIX="$(IMG_PREFIX)" $(TOPDIR)/scripts/arm-magic.sh
 endef
 
+# Build sysupgrade image
+define BuildFirmware/Generic
+	dd if=$(KDIR)/zImage of=$(KDIR)/zImage.pad bs=64k conv=sync; \
+	dd if=$(KDIR)/root.$(1) of=$(KDIR)/root.$(1).pad bs=128k conv=sync; \
+	sh $(TOPDIR)/scripts/combined-image.sh \
+		$(KDIR)/zImage.pad \
+		$(KDIR)/root.$(1).pad \
+		$(BIN_DIR)/$(IMG_PREFIX)-$(patsubst jffs2-%,jffs2,$(patsubst squashfs-%,squashfs,$(1)))-sysupgrade.bin
+endef
+
 define Image/Build
 	$(call Image/Build/$(1),$(1))
+	$(call BuildFirmware/Generic,$(1))
 endef
 
 define Image/Build/jffs2-64k