#!/bin/sh

export PATH=/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
UPDATE_TARBALL=update.tar.gz

echo "Update Script started"
pre_vers=`head -n 1 /etc/cabversion`

path=$PWD

rm -f /etc/ppp/chap-secrets
rm -f /etc/ppp/pap-secrets
rm -f /etc/ppp/peers/directip_chat.template
rm -f /var/db/sudo/lectured/.gitignore
#<REMOVE>
cd /
tar xzf ${path}/${UPDATE_TARBALL}
sync

cd ${path}

## Update Kernel if present
if [ -r /root/apf6-linux.bin ]; then
	echo "Installing new kernel"
	mount -t ext4 /dev/mmcblk2p1 /mnt

	mv /root/apf6-linux.bin /mnt/

	sync
	umount /mnt
fi

## Update Device Trees if present
if ls /root/imx6*.dtb &> /dev/null; then
	echo "Installing new Device Trees"
	mount -t ext4 /dev/mmcblk2p1 /mnt

	for i in /root/imx6*.dtb; do
		if [ -r "$i" ]; then
			echo "  * $(basename "$i")"
			mv $i /mnt/
		fi
	done
	sync
	umount /mnt
fi

## Update Bootloader (u-boot) if present
if [ -r /root/apf6-u-boot.img -a -r /root/apf6-u-boot.spl ]; then
	echo "Installing new bootloader"

	echo 0 > /sys/block/mmcblk2boot0/force_ro

	# Flash SPL
	dd if=/root/apf6-u-boot.spl of=/dev/mmcblk2boot0 bs=512 seek=2 status=none
	# Flash bootloader
	dd if=/root/apf6-u-boot.img of=/dev/mmcblk2boot0 bs=512 seek=138 status=none
	# Erase environment and backup environment
	dd if=/dev/zero of=/dev/mmcblk2boot0 bs=512 seek=2048 count=2048 status=none

	echo 1 > /sys/block/mmcblk2boot0/force_ro

	rm /root/apf6-u-boot.*

	sync
fi

ldconfig

echo "Update finished."

post_vers=`head -n 1 /etc/cabversion`
echo "Updated from ${pre_vers} to ${post_vers}"

echo "The config file /etc/cablynx.conf was untouched."
echo "Please use the new config file in /etc/cablynx.conf.${post_vers#*: }"

