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#!/bin/bash

#
#  grub-background script: change the GRUB background in libreboot
#
#	Copyright (C) 2015 Francis Rowe <info@gluglug.org.uk>
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

set -u -e -v

if (( $# != 2 )); then
	echo "Usage: ./grub-background /path/to/libreboot.rom /path/to/image.jpg"
	exit 1
fi
if [ ! -f $1 ]; then
	echo "File not found!"
	exit 1
fi
if [ ! -f $2 ]; then
	echo "File not found!"
	exit 1
fi
rompath=$1
jpegpath=$2

path="unknown"
if [ -f "DEBLOB" ]; then
	path="./coreboot/util/cbfstool/cbfstool"
elif [ $(uname -i) = "armv7l" ] || [ $(uname -m) = "armv7l" ]; then
	path="./cbfstool/armv7l/cbfstool"
elif [ $(uname -i) = "i686" ] || [ $(uname -m) = "i686" ]; then
	path="./cbfstool/i686/cbfstool"
elif [ $(uname -i) = "x86_64" ] || [ $(uname -m) = "x86_64" ]; then
	path="./cbfstool/x86_64/cbfstool"
else
	echo "grub-background script: Unknown host."
	exit 1
fi

$path "$rompath" remove -n background.jpg
$path "$rompath" add -f "$jpegpath" -n background.jpg -t raw