#!/bin/bash

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

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

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

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

if [ ! -d "bin/" ]
then
	mkdir "bin/"
fi

boards="unknown"
if [ $# -gt 0 ]; then
	# build only the ROM images that were requested
	boards="$@"
else
	# build all ROM images
	boards="$(ls resources/libreboot/config/grub/)"
fi


# 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 keymap in $(ls "../resources/utilities/grub-assemble/keymap/original/")
	do
		cat "../resources/grub/config/extra/common.cfg" > "grub_${keymap}_${romtype}.cfg"
		cat "../resources/grub/config/extra/${romtype}.cfg" >> "grub_${keymap}_${romtype}.cfg"
		printf "keymap %s\n" "${keymap}" >> "grub_${keymap}_${romtype}.cfg"
		cat "../resources/grub/config/menuentries/common.cfg" >> "grub_${keymap}_${romtype}.cfg"
		cat "../resources/grub/config/menuentries/${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
cd ../

# Build ROM images for supported boards
for board in ${boards}
do
	if [ -f "resources/libreboot/config/grub/${board}/config" ]; then
		./build roms withgrub_helper ${board}
	fi
done

# 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 $(ls)
		do
			dd if="${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

# 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" "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 $(ls)
				do
					dd if="ich9fdgbe_${romsize}.bin" of="${rom}" bs=1 count=12k conv=notrunc
				done
				rm -f "ich9fdgbe_4m.bin"
				rm -f "ich9fdgbe_8m.bin"
				cd "../"
			fi
		done
	done
	cd ../../
fi

# The GRUB payloads are no longer needed
rm -f "coreboot/grub_vesafb.elf"
rm -f "coreboot/grub_txtmode.elf"
# The GRUB configs are no longer needed
rm -f coreboot/grub*cfg

printf "\n\n"

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