#!/usr/bin/env bash

#  helper script: builds Tianocore source code
#
#	Copyright (C) 2020, 2021 Leah Rowe <info@minifree.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/>.
#

[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u -e

printf "Building Tianocore\n"

[ ! -d "payload/" ] && mkdir -p payload/
[ ! -d "payload/tianocore/" ] && mkdir -p payload/tianocore/

rm -f payload/tianocore/*

if [ ! -d "coreboot/default/" ]; then
    ./download coreboot default
    ./build module cbutils default
fi

if [ ! -d "coreboot/default/util/crossgcc/xgcc/i386-elf" ]; then
    (
	    # cat version coreboot/default/.coreboot-version -> breaks the build process; this file is not available, at the moment
	    
        cd coreboot/default/
        make crossgcc-i386 CPUS=$(nproc) # tianocore actually uses host gcc, which means
        # right now you should be building this on a 64-bit x86 host.
        # It does not currently use coreboot crossgcc. However, a dummy coreboot
        # ROM is compiled using Tianocore in order to derive tianocore.elf

        # and of course, that implies crossgcc. tianocore is only really use
        # on x86, so we only care about i386 crossgcc here
    )
fi

if [ ! -d "coreboot/default/payloads/external/tianocore/tianocore/" ]; then
    ./download tianocore
fi

(
cd coreboot/default/payloads/external/tianocore/
make clean
)

(
cd coreboot/default/
make distclean
cp ../../resources/tianocore/dummy.coreboot.config .config
make -j$(nproc)
)

cp coreboot/default/payloads/external/tianocore/tianocore/Build/UEFIPAYLOAD.fd \
    payload/tianocore/tianocore.elf

(
cd coreboot/default/
make distclean
)

(
cd coreboot/default/payloads/external/tianocore/
make clean
)