#!/bin/bash

# SPDX-FileCopyrightText: Copyright (c) 2019-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# This script runs on target post installation of nvidia-l4t-kernel-dtbs debian package.
BOOT_CTRL_CONF="/etc/nv_boot_control.conf"

if [ -e "/opt/nvidia/l4t-packages/.nv-l4t-disable-boot-fw-update-in-preinstall" ]; then
	echo "Pre-installing kernel-dtbs package, skip flashing"
	exit 0
fi

if [ ! -r "${BOOT_CTRL_CONF}" ]; then
	echo "ERROR. Cannot open ${BOOT_CTRL_CONF} for reading."
	echo "Cannot install package. Exiting..."
	exit 1
fi

# shellcheck disable=SC2164
pushd /boot/dtb &> /dev/null
# shellcheck disable=SC2035
DTB=$(ls *.dtb 2> /dev/null)
if [ -n "${DTB}" ]; then
	if [ -f "/boot/${DTB#kernel_}" ]; then
		cp -f "/boot/${DTB#kernel_}" "/boot/dtb/${DTB}"
	fi
	# shellcheck disable=SC2164
	popd &> /dev/null
fi

exit 0