ar71xx: OM2P sysupgrade support

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32613 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 169 insertions, 0 deletions

diff --git a/target/linux/ar71xx/base-files/lib/upgrade/om2p.sh b/target/linux/ar71xx/base-files/lib/upgrade/om2p.sh
new file mode 100644
index 0000000000..d9a8bbb7f4
--- /dev/null
+++ b/target/linux/ar71xx/base-files/lib/upgrade/om2p.sh
@@ -0,0 +1,169 @@
+# The U-Boot loader of the OM2P requires image sizes and checksums to be
+# provided in the U-Boot environment.
+# The OM2P comes with 2 main partitions - while one is active sysupgrade
+# will flash the other. The boot order is changed to boot the newly
+# flashed partition. If the new partition can't be booted due to upgrade
+# failures the previously used partition is loaded.
+
+trim()
+{
+	echo $1
+}
+
+cfg_value_get()
+{
+	local cfg=$1 cfg_opt
+	local section=$2 our_section=0
+	local param=$3 our_param=
+
+	for cfg_opt in $cfg
+		do
+			[ "$cfg_opt" = "[$section]" ] && our_section=1 && continue
+			[ "$our_section" = "1" ] || continue
+
+			our_param=$(echo ${cfg_opt%%=*})
+			[ "$param" = "$our_param" ] && echo ${cfg_opt##*=} && break
+		done
+}
+
+# make sure we got uboot-envtools and fw_env.config copied over to the ramfs
+platform_add_ramfs_ubootenv()
+{
+	[ -e /usr/sbin/fw_printenv ] && install_bin /usr/sbin/fw_printenv /usr/sbin/fw_setenv
+	[ -e /etc/fw_env.config ] && install_file /etc/fw_env.config
+}
+append sysupgrade_pre_upgrade platform_add_ramfs_ubootenv
+
+platform_check_image_om2p()
+{
+	local img_magic=$1
+	local img_path=$2
+	local fw_printenv=/usr/sbin/fw_printenv
+	local img_board_target= img_num_files= i=0
+	local cfg_name= kernel_name= rootfs_name=
+
+	case "$img_magic" in
+		# Combined Extended Image v1
+		43453031)
+			img_board_target=$(trim $(dd if="$img_path" bs=4 skip=1 count=8 2>/dev/null))
+			img_num_files=$(trim $(dd if="$img_path" bs=2 skip=18 count=1 2>/dev/null))
+			;;
+		*)
+			echo "Invalid image ($img_magic). Use combined extended images on this platform"
+			return 1
+			;;
+	esac
+
+	case "$img_board_target" in
+		OM2P)
+			;;
+		*)
+			echo "Invalid board target ($img_board_target). Use the correct image for this platform"
+			return 1
+			;;
+	esac
+
+	[ $img_num_files -ne 3 ] && {
+		echo "Invalid number of embedded images ($img_num_files). Use the correct image for this platform"
+		return 1
+	}
+
+	cfg_name=$(trim $(dd if="$img_path" bs=2 skip=19 count=16 2>/dev/null))
+
+	[ "$cfg_name" != "fwupgrade.cfg" ] && {
+		echo "Invalid embedded config file ($cfg_name). Use the correct image for this platform"
+		return 1
+	}
+
+	kernel_name=$(trim $(dd if="$img_path" bs=2 skip=55 count=16 2>/dev/null))
+
+	[ "$kernel_name" != "kernel" ] && {
+		echo "Invalid embedded kernel file ($kernel_name). Use the correct image for this platform"
+		return 1
+	}
+
+	rootfs_name=$(trim $(dd if="$img_path" bs=2 skip=91 count=16 2>/dev/null))
+
+	[ "$rootfs_name" != "rootfs" ] && {
+		echo "Invalid embedded kernel file ($rootfs_name). Use the correct image for this platform"
+		return 1
+	}
+
+	[ ! -x "$fw_printenv" ] && {
+		echo "Please install uboot-envtools!"
+		return 1
+	}
+
+	[ ! -r "/etc/fw_env.config" ] && {
+		echo "/etc/fw_env.config is missing"
+		return 1
+	}
+
+	return 0
+}
+
+platform_do_upgrade_om2p()
+{
+	local img_path=$1
+	local kernel_start_addr= kernel_size= kernel_md5=
+	local rootfs_size= rootfs_checksize= rootfs_md5=
+	local kernel_bsize= total_size=7340032
+	local data_offset=$((64 * 1024)) block_size=$((256 * 1024)) offset=
+	local uboot_env_upgrade="/tmp/fw_env_upgrade"
+	local cfg_size= kernel_size= rootfs_size=
+	local append=""
+
+	[ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
+
+	cfg_size=$(dd if="$img_path" bs=2 skip=35 count=4 2>/dev/null)
+	kernel_size=$(dd if="$img_path" bs=2 skip=71 count=4 2>/dev/null)
+	rootfs_size=$(dd if="$img_path" bs=2 skip=107 count=4 2>/dev/null)
+
+	cfg_content=$(dd if="$img_path" bs=1 skip=$data_offset count=$(echo $((0x$cfg_size))) 2>/dev/null)
+
+	kernel_md5=$(cfg_value_get "$cfg_content" "vmlinux" "md5sum")
+	rootfs_md5=$(cfg_value_get "$cfg_content" "rootfs" "md5sum")
+	rootfs_checksize=$(cfg_value_get "$cfg_content" "rootfs" "checksize")
+
+	if [ "$((0x$kernel_size % $block_size))" = "0" ]
+		then
+			kernel_bsize=$(echo $((0x$kernel_size)))
+		else
+			kernel_bsize=$((0x$kernel_size + ($block_size - (0x$kernel_size % $block_size))))
+	fi
+
+	mtd -q erase inactive
+
+	offset=$(echo $(($data_offset + 0x$cfg_size + 0x$kernel_size)))
+	dd if="$img_path" bs=1 skip=$offset count=$(echo $((0x$rootfs_size))) 2>&- | mtd -n -p $kernel_bsize $append write - "inactive"
+
+	offset=$(echo $(($data_offset + 0x$cfg_size)))
+	dd if="$img_path" bs=1 skip=$offset count=$(echo $((0x$kernel_size))) 2>&- | mtd -n write - "inactive"
+
+	rm $uboot_env_upgrade 2>&-
+
+	if [ "$(grep 'mtd3:.*inactive' /proc/mtd)" ]
+		then
+			printf "kernel_size_1 %u\n" $(($kernel_bsize / 1024)) >> $uboot_env_upgrade
+			printf "rootfs_size_1 %u\n" $((($total_size - $kernel_bsize) / 1024)) >> $uboot_env_upgrade
+			printf "bootseq 1,2\n" >> $uboot_env_upgrade
+			kernel_start_addr=0x9f1c0000
+		else
+			printf "kernel_size_2 %u\n" $(($kernel_bsize / 1024)) >> $uboot_env_upgrade
+			printf "rootfs_size_2 %u\n" $((($total_size - $kernel_bsize) / 1024)) >> $uboot_env_upgrade
+			printf "bootseq 2,1\n" >> $uboot_env_upgrade
+			kernel_start_addr=0x9f8c0000
+	fi
+
+	printf "vmlinux_start_addr %s\n" $kernel_start_addr >> $uboot_env_upgrade
+	printf "vmlinux_size 0x%s\n" $kernel_size >> $uboot_env_upgrade
+	printf "vmlinux_checksum %s\n" $kernel_md5 >> $uboot_env_upgrade
+	printf "rootfs_start_addr 0x%x\n" $(($kernel_start_addr + $kernel_bsize)) >> $uboot_env_upgrade
+	printf "rootfs_size %s\n" $rootfs_checksize >> $uboot_env_upgrade
+	printf "rootfs_checksum %s\n" $rootfs_md5 >> $uboot_env_upgrade
+
+	fw_setenv -s $uboot_env_upgrade || {
+		echo "failed to update U-Boot environment"
+		return 1
+	}
+}