#!/usr/bin/env bash

#  helper script: builds SeaBIOS 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

# Build SeaBIOS
# ---------------------------------------------------------------------

# seabios.elf and seavgabios.bin are reused by
# resources/packages/roms_helper/boot, and their path is also
# hardcoded, in the same way, in the same variable names, so if you
# modify the variables below also keep
# resources/packages/roms_helper/boot in sync.
seabiosrom="../payload/seabios/seabios.elf"
seavgabiosrom="../payload/seabios/seavgabios.bin"

printf "Building SeaBIOS payloads and SeaVGABIOS\n"

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

rm -f payload/seabios/*

if [ ! -d "seabios/" ]; then
    ./download seabios
fi

cd seabios/

# for libgfxinit setup:
[[ -f Makefile ]] && make distclean
cp ../resources/seabios/config/libgfxinit .config
make silentoldconfig -j$(nproc)
make -j$(nproc)
mv out/bios.bin.elf ${seabiosrom}
mv out/vgabios.bin ${seavgabiosrom}
rm .config

# clean it again. gotta keep it clean!
[[ -f Makefile ]] && make distclean

printf "Done! SeaBIOS files are in payload/seabios/\n\n"

# done. go back to main directory
cd ../

# ------------------- DONE ----------------------