#!/bin/bash

#  helper script: create ROM images for a given system, with GRUB
#
#	Copyright (C) 2014, 2015 Francis Rowe <info@gluglug.org.uk>
#	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 libreboot_src or git

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

if (( $# != 1 )); then
	printf "Usage: ./buildrom-withgrub boardname\n"
	printf "Example: ./buildrom-withgrub x60\n"
	printf "You need to specify exactly 1 argument\n"
	exit 1
fi

printf "GRUB Helper script: build ROM images for '%s'\n" "${1}"

cd "coreboot/"

if [ -f "../version" ]; then
	# _src release archive is being used
	version="$(cat ../version)"
else
	# git repo is being used
	version="$(git describe --tags HEAD)"
fi
printf '%s\n' "${version}" >"lbversion"

# Build ROM images with text-mode and corebootfb modes.
# ---------------------------------------------------------------------------------------------------------------

if [ "${1}" = "qemu_i440fx_piix4" ] || [ "${1}" = "qemu_q35_ich9" ]
then
	# assume that the default config enable framebuffer mode, duplicate and patch for text-mode
	# necessary, otherwise it will ask you to enter the Y/X resolution of the framebuffer at build time
	cp "../resources/libreboot/config/grub/${1}/config" "config_vesafb"
	sed 's/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/' < "config_vesafb" > "config_txtmode"
else
	# assume that the default config enables text-mode, duplicate and patch for framebuffer mode
	cp "../resources/libreboot/config/grub/${1}/config" "config_txtmode"
	sed 's/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/' < "config_txtmode" > "config_vesafb"
fi

for romtype in txtmode vesafb
do
	if [ "${1}" = "x200_8mb" ] || [ "${1}" = "x200_4mb" ] || [ "${1}" = "r400_8mb" ] || [ "${1}" = "r400_4mb" ] || [ "${1}" = "t400_8mb" ] || [ "${1}" = "t400_4mb" ] || [ "${1}" = "t500_8mb" ] || [ "${1}" = "t500_4mb" ]
		then
			if [ "${romtype}" = "txtmode" ]
				then
					printf "Text mode graphics is currently broken on X200, R400, T400 and T500. Only framebuffer mode works.\n"
					printf "TODO: offending coreboot commit found (see docs/release.html). Fix text-mode graphics initialization.\n"
					continue
			fi
	fi

	# Build coreboot ROM image
	make clean
	mv "config_${romtype}" ".config"
	mv "grub_${romtype}.elf" "grub.elf"
	make -j$(nproc)
	mv "grub.elf" "grub_${romtype}.elf"
	mv "build/coreboot.rom" "${1}_${romtype}.rom"
	# .config no longer needed
	rm -f ".config"

	# Add version information to this image
	./util/cbfstool/cbfstool ${1}_${romtype}.rom add -f lbversion -n lbversion -t raw

	# Add the background image
	if [ "$romtype" = "vesafb" ]
	then
		if [ "$1" = "macbook21" ] || [ "$1" = "x200_4mb" ] || [ "$1" = "x200_8mb" ] || [ "$1" = "r400_4mb" ] || [ "$1" = "r400_8mb" ] || [ "$1" = "t400_4mb" ] || [ "$1" = "t400_8mb" ] || [ "$1" = "t500_4mb" ] || [ "$1" = "t500_8mb" ]
		then
			./util/cbfstool/cbfstool ${1}_${romtype}.rom add -f ../resources/grub/background/background1280x800.png -n background.png -t raw
		else
			./util/cbfstool/cbfstool ${1}_${romtype}.rom add -f ../resources/grub/background/background1024x768.png -n background.png -t raw
		fi
	fi

	# Add the correct GRUB configuration file for this image.
	for keymap in $(ls ../resources/utilities/grub-assemble/keymap/original)
	do
		# copy the images based on the keymap
		cp "${1}_${romtype}.rom" "${1}_${keymap}_${romtype}.rom"

		# Insert grub config into the image
		./util/cbfstool/cbfstool ${1}_${keymap}_${romtype}.rom add -f grub_${keymap}_${romtype}.cfg -n grub.cfg -t raw
		# Insert grub test config into the image (for the user to test modifications to before modifying the main one)
		./util/cbfstool/cbfstool ${1}_${keymap}_${romtype}.rom add -f grub_${keymap}_${romtype}_test.cfg -n grubtest.cfg -t raw
	done

	# This config-less ROM is no longer needed
	rm -f "${1}_${romtype}.rom"
done

# Now we clean up and prepare the bin directory containing all the images
# ----------------------------------------------------------------------------------------------------------------------------

# prepare directory for new ROM images
rm -Rf "${1}/"
mkdir "${1}/"
# move the ROM's into the newly created directory
mv "${1}"*.rom "${1}/"

# delete the old ROM's from ../bin
rm -Rf "../bin/grub/${1}/"
# now put the new ROM's in ./bin/grub/
[ ! -d "../bin/grub/" ] && mkdir -p "../bin/grub/"
mv "${1}/" "../bin/grub/"

# libreboot version file no longer needed
rm -f "lbversion"

# go back to main source directory
cd "../"

printf "\n\n"