#!/bin/bash

#  helper script: builds flashrom source code
#
#	Copyright (C) 2014, 2015 Minifree Ltd <info@minifree.org>
#	Copyright (C) 2015 Klemens Nanni <contact@autoboot.org>
#
#    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/>.
#

# This script assumes that the working directory is the root
# of git or release archive

[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u -e
if [ -z ${NPROC+x} ]; then
    cores="$(nproc)"
else
    case ${NPROC} in
        ''|*[!0-9]*)
            printf "value '%s' for NPROC is invalid. non-numeric. Exiting.\n" "${NPROC}"
            exit 1
            ;;
    esac
    cores="${NPROC}"
fi

# Build "flashrom" (utility for flashing/dumping ROMs)
# --------------------------------------------------------------------

printf "Building flashrom\n"

cd "flashrom/"

make clean
if (( $# != 1 )); then
	make -j${cores}
else
	if [ "${1}" = "static" ]; then
		make SHARED=0 CC='gcc -static' -j${cores}
	else
		make -j${cores}
	fi
fi

mv "flashrom" "flashrom_normal"

# build patched binaries for MX25L1605D and SST25VF016B flash chips
# - these patches are needed for initial installation on an X60 or T60
# - these patches are for people who have lenovo bios running
for patchname in "lenovobios_macronix" "lenovobios_sst"
do
	# first remove the existing build
	rm -f "flashrom_${patchname}"
	
	# backup the unpatched flashchips.c (it will be patched)
	cp "flashchips.c" "flashchips.c_"
	# patch flashchips.c
	patch "flashchips.c" < "../resources/flashrom/patch/${patchname}.diff"
	
	make clean
	if (( $# != 1 )); then
		make -j${cores}
	else
		if [ "${1}" = "static" ]; then
			make SHARED=0 CC='gcc -static' -j${cores}
		else
			make -j${cores}
		fi
	fi
	
	# Rename the binary based on the patch name
	mv "flashrom" "flashrom_${patchname}"
	
	# restore unpatched flashchips.c
	rm -f "flashchips.c"
	mv "flashchips.c_" "flashchips.c"
done

mv "flashrom_normal" "flashrom"

cd "../"