#!/bin/bash

#
#  helper script: build ROM images with GRUB and put them in ./bin/
#
#	Copyright (C) 2014, 2015 Leah Rowe <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

printf "Building ROM images with the GRUB payload\n"

[ -d bin ] || mkdir "bin/"

# Put GRUB payloads and config files
# in the coreboot directory, ready for next step
(
cd "coreboot/"
for romtype in txtmode vesafb; do
	cd ../resources/utilities/grub-assemble
	./gen.sh ${romtype}
	rm -f "../../../coreboot/grub_${romtype}.elf"
	mv "grub_${romtype}.elf" "../../../coreboot/"
	cd "../../../coreboot"

	# GRUB configuration files
	for keylayout in ../resources/utilities/grub-assemble/keymap/original/*; do
		keymap="${keylayout##*/}"
		cat ../resources/grub/config/extra/{common,"${romtype}"}.cfg > "grub_${keymap}_${romtype}.cfg"
		printf "keymap %s\n" "${keymap}" >> "grub_${keymap}_${romtype}.cfg"
		cat ../resources/grub/config/menuentries/{common,"${romtype}"}.cfg >> "grub_${keymap}_${romtype}.cfg"
		# grubtest.cfg should be able to switch back to grub.cfg
		sed "s/grubtest.cfg/grub.cfg/" < "grub_${keymap}_${romtype}.cfg" > "grub_${keymap}_${romtype}_test.cfg"
	done
done
)

# Build ROM images for supported boards
buildrom() {
	board="$1"
	if [ -f "resources/libreboot/config/grub/${board}/config" ]; then
		./build roms withgrub_helper "${board}"
	fi
}

if [ $# -gt 0 ]; then
	for board in "${@}"; do
		buildrom "${board}"
	done
else
	for board in resources/libreboot/config/grub/*; do
		buildrom "${board##*/}"
	done
fi

# Needed on i945 systems for the bucts/dd trick (documented)
# This enables the ROM to be flashed over the lenovo bios firmware
for i945board in "x60" "t60"
do
	if [ -d "bin/grub/${i945board}/" ]; then
		cd "bin/grub/${i945board}/"
		for i945rom in *
		do
			dd if="${i945rom}" of=top64k.bin bs=1 skip=$[$(stat -c %s "${i945rom}") - 0x10000] count=64k
			dd if=top64k.bin of="${i945rom}" bs=1 seek=$[$(stat -c %s "${i945rom}") - 0x20000] count=64k conv=notrunc
			rm -f top64k.bin
		done
		cd "../../../"
	fi
done

# TEMPORARY HACK: copy t400* to r500*
# (until proper R500 support is added)
if [ -d "bin/grub/" ]; then
	cd "bin/grub/"
	for board in "t400"
	do
		for romsize in "4m" "8m"
		do	
			if [ -d "${board}_${romsize}b/" ]; then
				cp -R "${board}_${romsize}b/" "r500_${romsize}b/"
			fi
		done
	done
	cd ../../
fi

# Build the deblobbed descriptor+gbe regions for GM45/ICH9M targets.
# Then put them in the ROM images.
if [ -d "bin/grub/" ]; then
	cd "bin/grub/"
	for board in "x200" "r400" "r500" "t400" "t500"
	do
		for romsize in "4m" "8m"
		do	
			if [ -d "${board}_${romsize}b/" ]; then
				cd "${board}_${romsize}b/"
				../../../resources/utilities/ich9deblob/ich9gen
				for rom in *
				do
					if [ "${board}" = "r500" ]; then
						dd if="ich9fdnogbe_${romsize}.bin" of="${rom}" bs=1 count=4k conv=notrunc
					else
						dd if="ich9fdgbe_${romsize}.bin" of="${rom}" bs=1 count=12k conv=notrunc
					fi
				done
				rm -f "ich9fd"*.bin "mk"*.[ch]
				cd "../"
			fi
		done
	done
	cd ../../
fi

# The GRUB files are no longer needed
rm -f "coreboot/grub"*.{elf,cfg}

printf "\n\n"