layerscape: use wrapped nand_do_upgrade for traverse-ls1043 boards

Traverse LS1043 boards are set up with a dual-system layout, rootfs{1,2} and kernel{1,2}.
nand_do_upgrade can do the image replacement work we were doing before as long as we give it the partition names.
This greatly simplifies the /lib/upgrade/platform.sh.

Signed-off-by: Mathew McBride <matt@traverse.com.au>

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

@@ -1,6 +1,7 @@
+
 #!/bin/sh
 #
-# Copyright 2015-2018 Traverse Technologies
+# Copyright 2015-2019 Traverse Technologies
 #
 platform_do_upgrade_traverse_nandubi() {
 	bootsys=$(fw_printenv bootsys | awk -F= '{{print $2}}')
@@ -8,60 +9,25 @@ platform_do_upgrade_traverse_nandubi() {
 	if [ "$bootsys" -eq "2" ]; then
 		newbootsys=1
 	fi
-	mkdir -p /tmp/image
-	cd /tmp/image
-	get_image "$1" > image.tar
-	ls -la image.tar
-	files=$(tar -tf image.tar)
-	echo "Files in image:"
-	echo $files
-	for f in $files
-	do
-		part_name=$(echo $f | awk -F '/' '{{print $2}}')
-		if [ -z "$part_name" ] || [ "$part_name" = "CONTROL" ]; then
-			continue
-		fi
-
-		[ "$part_name" = "root" ] && part_name="rootfs"
 
-		volume=$part_name
-		if [ "$part_name" = "kernel" ] || [ "$part_name" = "rootfs" ]; then
-			volume="${part_name}${newbootsys}"
-		fi
-		volume_id=$(ubinfo -d 0 --name $volume | awk '/Volume ID/ {print $3}')
-		file_size=$(tar -tvf image.tar $f | awk '{{print $3}}')
-		echo "$f size $file_size"
-		tar -xOf image.tar $f | ubiupdatevol -s $file_size /dev/ubi0_$volume_id -
-		
-		echo "$volume upgraded"
-	done
+	# If nand_do_upgrade succeeds, we don't have an opportunity to add any actions of
+	# our own, so do it here and set back on failure
+	echo "Setting bootsys to #${newbootsys}"
 	fw_setenv bootsys $newbootsys
-	echo "Upgrade complete"
-}
-platform_copy_config() {
-	bootsys=$(fw_printenv bootsys | awk -F= '{{print $2}}')
-	rootvol=rootfs$bootsys
-	volume_id=$(ubinfo -d 0 --name $rootvol | awk '/Volume ID/ {print $3}')
-	mkdir -p /mnt/oldsys
-	mount -t ubifs -o rw,noatime /dev/ubi0_$volume_id /mnt/oldsys
-	cp -af "$CONF_TAR" /mnt/oldsys
-	umount /mnt/oldsys
+	CI_UBIPART="nandubi"
+	CI_KERNPART="kernel${newbootsys}"
+	CI_ROOTPART="rootfs${newbootsys}"
+	nand_do_upgrade "$ARGV" || (echo "Upgrade failed, setting bootsys ${bootsys}" && fw_setenv bootsys $bootsys)
+
 }
 platform_check_image() {
 	local board=$(board_name)
 
 	case "$board" in
 	traverse,ls1043v | \
-	traverse,ls1043s | \
-	traverse,five64)
-		local tar_file="$1"
-		local kernel_length=$( (tar xf $tar_file sysupgrade-traverse-five64/kernel -O | wc -c) 2> /dev/null)
-		local rootfs_length=$( (tar xf $tar_file sysupgrade-traverse-five64/root -O | wc -c) 2> /dev/null)
-		[ "$kernel_length" -eq 0 -o "$rootfs_length" -eq 0 ] && {
-			echo "The upgrade image is corrupt."
-			return 1
-		}
-		return 0
+	traverse,ls1043s)
+		nand_do_platform_check "traverse-ls1043" $1
+		return $?
 		;;
 	*)
 		echo "Sysupgrade is not currently supported on $board"
@@ -75,8 +41,7 @@ platform_do_upgrade() {
 
 	case "$board" in
 	traverse,ls1043v | \
-	traverse,ls1043s | \
-	traverse,five64)
+	traverse,ls1043s)
 		platform_do_upgrade_traverse_nandubi "$ARGV"
 		;;
 	*)
@@ -88,7 +53,7 @@ platform_pre_upgrade() {
 	# Force the creation of fw_printenv.lock
 	mkdir -p /var/lock
 	touch /var/lock/fw_printenv.lock
-	
+
 	export RAMFS_COPY_BIN="/usr/sbin/fw_printenv /usr/sbin/fw_setenv /usr/sbin/ubinfo /bin/echo ${RAMFS_COPY_BIN}"
 	export RAMFS_COPY_DATA="/etc/fw_env.config /var/lock/fw_printenv.lock ${RAMFS_COPY_DATA}"
 }