Initial commit

target/linux/kirkwood/base-files/lib/upgrade/linksys.sh

@@ -0,0 +1,93 @@
+#
+# Copyright (C) 2014 OpenWrt.org
+#
+
+linksys_get_target_firmware() {
+
+	local cur_boot_part mtd_ubi0
+
+	cur_boot_part=$(/usr/sbin/fw_printenv -n boot_part)
+	if [ -z "${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
+		kernel|rootfs)
+			cur_boot_part=1
+			;;
+		alt_kernel|alt_rootfs)
+			cur_boot_part=2
+			;;
+		esac
+		>&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
+			"${cur_boot_part}" "${mtd_ubi0}"
+	fi
+
+	case $cur_boot_part in
+	1)
+		fw_setenv -s - <<-EOF
+			boot_part 2
+			bootcmd "run altnandboot"
+		EOF
+		printf "kernel2"
+		return
+		;;
+	2)
+		fw_setenv -s - <<-EOF
+			boot_part 1
+			bootcmd "run nandboot"
+		EOF
+		printf "kernel1"
+		return
+		;;
+	*)
+		return
+		;;
+	esac
+}
+
+linksys_get_root_magic() {
+	(get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
+}
+
+platform_do_upgrade_linksys() {
+	local magic_long="$(get_magic_long "$1")"
+
+	mkdir -p /var/lock
+	local part_label="$(linksys_get_target_firmware)"
+	touch /var/lock/fw_printenv.lock
+
+	if [ ! -n "$part_label" ]
+	then
+		echo "cannot find target partition"
+		exit 1
+	fi
+
+	local target_mtd=$(find_mtd_part $part_label)
+
+	[ "$magic_long" = "73797375" ] && {
+		CI_KERNPART="$part_label"
+		if [ "$part_label" = "kernel1" ]
+		then
+			CI_UBIPART="rootfs1"
+		else
+			CI_UBIPART="rootfs2"
+		fi
+
+		nand_upgrade_tar "$1"
+	}
+	[ "$magic_long" = "27051956" ] && {
+		# check firmwares' rootfs types
+		local target_mtd=$(find_mtd_part $part_label)
+		local oldroot="$(linksys_get_root_magic $target_mtd)"
+		local newroot="$(linksys_get_root_magic "$1")"
+
+		if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
+		# we're upgrading from a firmware with UBI to one with UBI
+		then
+			# erase everything to be safe
+			mtd erase $part_label
+			get_image "$1" | mtd -n write - $part_label
+		else
+			get_image "$1" | mtd write - $part_label
+		fi
+	}
+}