layerscape: add Traverse LS1043-S support

The Traverse LS1043-S board is a router board based on
NXP/Freescale's LS1043 SoC, with 4x1GBase-T, 1 SFP and 1 SFP+,
as well as miniPCIe and M.2 LTE.

Unlike the Layerscape reference boards, the LS1043-S board has
NAND flash and uses the mainline U-Boot.

This patch implements support for the LS1043-S board, as well as
the earlier LS1043-V board. It is our intention that all boards
in this family (LS1043-S and later, Five64) will boot the same binary.

Not included in this patchset are the hwmon drivers not in the kernel
(emc1704,pac1934) or the bootloader.

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

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

@@ -0,0 +1,94 @@
+#!/bin/sh
+#
+# Copyright 2015-2018 Traverse Technologies
+#
+platform_do_upgrade_traverse_nandubi() {
+	bootsys=$(fw_printenv bootsys | awk -F= '{{print $2}}')
+	newbootsys=2
+	if [ "$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
+	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 "$CONF_TAR" /mnt/oldsys
+	umount /mnt/oldsys
+}
+platform_check_image() {
+	local board=$(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
+		;;
+	*)
+		echo "Sysupgrade is not currently supported on $board"
+		;;
+	esac
+
+	return 1
+}
+platform_do_upgrade() {
+	local board=$(board_name)
+
+	case "$board" in
+	traverse,ls1043v | \
+	traverse,ls1043s | \
+	traverse,five64)
+		platform_do_upgrade_traverse_nandubi "$ARGV"
+		;;
+	*)
+		echo "Sysupgrade is not currently supported on $board"
+		;;
+	esac
+}
+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}"
+}