#!/bin/bash

# SPDX-FileCopyrightText: Copyright (c) 2021-2023 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.
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# 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.
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# 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
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# This script runs on target post installation of nvidia-initrd debian package.

set -e

BOOT_CTRL_CONF="/etc/nv_boot_control.conf"

# Check UEFI secure boot state
# Suffix: 00 - disable, 01 - enable
UEFI_SECURE_BOOT_PATH="/sys/firmware/efi/efivars/SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c"
if [ -f "${UEFI_SECURE_BOOT_PATH}" ] && xxd -p "${UEFI_SECURE_BOOT_PATH}" | grep -qE '01$'; then
	echo "UEFI secure boot enabled, skip updating initrd"
	exit 0
fi

if [ "${1}" = triggered ]; then
	nv-update-initrd
	exit 0
fi

echo "nv-update-initrd: deferring update (trigger activated)"
dpkg-trigger --no-await "nv-update-initrd"

if [ -e "/opt/nvidia/l4t-packages/.nv-l4t-disable-boot-fw-update-in-preinstall" ]; then
	echo "Pre-installing initrd 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

exit 0