#!/bin/sh
#===============================================================================
#
#  Copyright (C) 2020-2021 by Digi International Inc.
#  All rights reserved.
#
#  This program is free software; you can redistribute it and/or modify it
#  under the terms of the GNU General Public License version 2 as published by
#  the Free Software Foundation.
#
#
#  Description:
#    Script to flash Yocto build artifacts over USB to the target.
#===============================================================================
# set -x

#
# U-Boot script for installing Linux images created by Yocto into the NAND
#
clear

# Parse uuu cmd output
getenv()
{
	uuu -v fb: ucmd printenv "${1}" | sed -ne "s,^${1}=,,g;T;p"
}

show_usage()
{
	echo "Usage: $0 [options]"
	echo ""
	echo "  Options:"
	echo "   -h                     Show this help."
	echo "   -i <dey-image-name>    Image name that prefixes the image filenames, such as 'dey-image-qt', "
	echo "                          'dey-image-webkit', 'core-image-base'..."
	echo "                          Defaults to 'core-image-base' if not provided."
	echo "   -n                     No wait. Skips 10 seconds delay to stop script."
	echo "   -u <u-boot-filename>   U-Boot filename."
	echo "                          Auto-determined by variant if not provided."
	exit 2
}

# Update a NAND partition
#   Params:
#	1. partition
#	2. file
#	3. timeout (in ms)
#   Description:
#	- downloads image to RAM
#	- runs 'update' command from RAM
nand_update()
{
	echo "\033[36m"
	echo "====================================================================================="
	echo "Updating '${1}' partition with file: ${2}"
	echo "====================================================================================="
	echo "\033[0m"

	uuu fb: download -f "${2}"
	uuu "fb[-t ${3}]:" ucmd update "${1}" ram \${fastboot_buffer} \${fastboot_bytes}
}

# Command line admits the following parameters:
# -u <u-boot-filename>
# -i <image-name>
while getopts 'hi:nu:' c
do
	case $c in
	h) show_usage ;;
	i) IMAGE_NAME=${OPTARG} ;;
	n) NOWAIT=true ;;
	u) INSTALL_UBOOT_FILENAME=${OPTARG} ;;
	esac
done

if [ ! "${NOWAIT}" = true ]; then
	echo "############################################################"
	echo "#           Linux firmware install through USB OTG         #"
	echo "############################################################"
	echo ""
	echo " This process will erase your NAND and will install a new"
	echo " U-Boot and Linux firmware images on the NAND."
	echo ""
	echo " Press CTRL+C now if you wish to abort or wait 10 seconds"
	echo " to continue."
	sleep 10
fi

# Enable the redirect support to get u-boot variables values
uuu fb: ucmd setenv stdout serial,fastboot

# Determine U-Boot filename if not provided
if [ -z "${INSTALL_UBOOT_FILENAME}" ]; then
	module_variant=$(getenv "module_variant")
	# Determine U-Boot file to program basing on SOM's variant
	if [ -n "$module_variant" ]; then
		if [ "$module_variant" = "0x08" ] || \
		   [ "$module_variant" = "0x09" ]; then
			INSTALL_UBOOT_FILENAME="u-boot-ccimx6ulstarter512MB.imx"
		elif [ "$module_variant" = "0x04" ] || \
		     [ "$module_variant" = "0x05" ] || \
		     [ "$module_variant" = "0x07" ]; then
			INSTALL_UBOOT_FILENAME="u-boot-ccimx6ulstarter1GB.imx"
		else
			INSTALL_UBOOT_FILENAME="u-boot-ccimx6ulstarter.imx"
		fi
	fi

	# u-boot when the checked value is empty.
	if [ -n "${INSTALL_UBOOT_FILENAME}" ]; then
		true
	else
		echo ""
		echo "[ERROR] Cannot determine U-Boot file for this module!"
		echo ""
		echo "1. Add U-boot file name, depending on your ConnectCore 8X variant, to script command line:"
		echo "   - For a SOM with 1GB DDR3, run:"
		echo "     => ./install_linux_fs_uuu.sh -u u-boot-ccimx6ulstarter1GB.imx"
		echo "   - For a SOM with 512MB DDR3, run:"
		echo "     => ./install_linux_fs_uuu.sh -u u-boot-ccimx6ulstarter512MB.imx"
		echo "   - For a SOM with 256MB DDR3, run:"
		echo "     => ./install_linux_fs_uuu.sh -u u-boot-ccimx6ulstarter.imx"
		echo ""
		echo "2. Run the install script again."
		echo ""
		echo "Aborted"
		echo ""
		exit
	fi
fi

# remove redirect
uuu fb: ucmd setenv stdout serial

# Set fastboot buffer address to $loadaddr, just in case
uuu fb: ucmd setenv fastboot_buffer \${loadaddr}

# Skip user confirmation for U-Boot update
uuu fb: ucmd setenv forced_update 1

# Update U-Boot
nand_update "uboot" "${INSTALL_UBOOT_FILENAME}" 5000

# Set 'bootcmd' for the second part of the script that will
#  - Reset environment to defaults
#  - Save the environment
#  - Update the 'linux' partition
#  - Update the 'recovery' partition
#  - Update the 'rootfs' partition
#  - Erase the 'update' partition
uuu fb: ucmd setenv bootcmd "
	env default -a;
	saveenv;
	echo \"\";
	echo \"\";
	echo \">> Installing Linux firmware\";
	echo \"\";
	echo \"\";
	fastboot 0;
"

uuu fb: ucmd saveenv
uuu fb: acmd reset

if [ -z "${IMAGE_NAME}" ]; then
	IMAGE_NAME="core-image-base"
fi
INSTALL_LINUX_FILENAME="${IMAGE_NAME}-##GRAPHICAL_BACKEND##-ccimx6ulstarter.boot.ubifs"
INSTALL_RECOVERY_FILENAME="${IMAGE_NAME}-##GRAPHICAL_BACKEND##-ccimx6ulstarter.recovery.ubifs"
INSTALL_ROOTFS_FILENAME="${IMAGE_NAME}-##GRAPHICAL_BACKEND##-ccimx6ulstarter.ubifs"

# Wait for the target to reset
sleep 3

# Set fastboot buffer address to $loadaddr
uuu fb: ucmd setenv fastboot_buffer \${loadaddr}

# Update Linux
nand_update "linux" "${INSTALL_LINUX_FILENAME}" 15000

# Update Recovery
nand_update "recovery" "${INSTALL_RECOVERY_FILENAME}" 15000

# Update Rootfs
nand_update "rootfs" "${INSTALL_ROOTFS_FILENAME}" 90000

# Erase the 'Update' partition
uuu fb: ucmd nand erase.part update

# Configure u-boot to boot into recovery mode
uuu fb: ucmd setenv boot_recovery yes
uuu fb: ucmd setenv recovery_command wipe_update

uuu fb: ucmd saveenv

# Reset the target
uuu fb: acmd reset

echo "\033[32m"
echo "============================================================="
echo "Done! Wait for the target to complete first boot process."
echo "============================================================="
echo "\033[0m"

exit