#!/bin/sh

# Connect PC31 to GND to enable DFU
gpio_dfu=95
gpio_name="PC31"
gpio_wait=5

dfu_config="/dev/nand0.bootstrap.bb(bootstrap)sr,/dev/nand0.barebox.bb(barebox)sr,/dev/nand0.kernel.bb(kernel)r,/dev/nand0.rootfs.bb(rootfs)r"

echo

if [ $at91_udc0.vbus != 1 ]; then
	echo "No USB Device cable plugged, normal boot"
	exit
fi

gpio_get_value ${gpio_dfu}
if [ $? = 0 ]; then
	echo "${gpio_name} low value detected wait ${gpio_wait}s"
	timeout -s -a ${gpio_wait}

	if [ $at91_udc0.vbus != 1 ]; then
		echo "No USB Device cable plugged, normal boot"
		exit
	fi

	gpio_get_value ${gpio_dfu}
	if [ $? = 0 ]; then
		echo "Start DFU Mode"
		dfu ${dfu_config}
		exit
	fi
fi

global.autoboot_timeout=16
echo "enable tty over USB Device, increase the boot delay to ${global.autoboot_timeout}s"
usbserial