mediatek: sync and patches add support for several boards

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 49263

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

@@ -0,0 +1,41 @@
+#
+# Copyright (C) 2016 OpenWrt.org
+#
+
+platform_do_upgrade() {
+	local tar_file="$1"
+	local board="$(cat /tmp/sysinfo/board_name)"
+
+	echo "flashing kernel"
+	tar xf $tar_file sysupgrade-$board/kernel -O | mtd write - kernel
+
+	echo "flashing rootfs"
+	tar xf $tar_file sysupgrade-$board/root -O | mtd write - rootfs
+
+	return 0
+}
+
+platform_check_image() {
+	local tar_file="$1"
+	local board=$(cat /tmp/sysinfo/board_name)
+
+	case "$board" in
+	NAND | \
+	eMMC)
+		local kernel_length=`(tar xf $tar_file sysupgrade-$board/kernel -O | wc -c) 2> /dev/null`
+		local rootfs_length=`(tar xf $tar_file sysupgrade-$board/root -O | wc -c) 2> /dev/null`
+		;;
+
+	*)
+		echo "Sysupgrade is not supported on your board yet."
+		return 1
+		;;
+	esac
+
+	[ "$kernel_length" = 0 -o "$rootfs_length" = 0 ] && {
+		echo "The upgarde image is corrupt."
+		return 1
+	}
+
+	return 0
+}