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#!/bin/bash

#  helper script: create ROM images for a given system, with SeaBIOS
#
#	Copyright (C) 2014, 2015, 2016 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
if [ -z ${NPROC+x} ]; then
    cores="$(nproc)"
else
    case ${NPROC} in
        ''|*[!0-9]*)
            printf "value '%s' for NPROC is invalid. non-numeric. Exiting.\n" "${NPROC}"
            exit 1
            ;;
    esac
    cores="${NPROC}"
fi

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

boardtarget="${1}"

if [ -f "version" ]; then
	# release archive is being used
	version="$(cat version)"
else
	# git repo is being used
	version="$(git describe --tags HEAD)"
fi

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

(
cbrevision="$(cat resources/libreboot/config/seabios/${boardtarget}/cbrevision)"
vbootrevision="$(cat resources/libreboot/config/seabios/${boardtarget}/vbootrevision)"
branchname="seabios_${boardtarget}"

cd "coreboot/${cbrevision}/${cbrevision}/"
git checkout ${branchname}
(
    cd "3rdparty/vboot/"
    git checkout ${branchname}
)

# Make sure to remove these first
rm -f *{elf,cfg}

printf 'libreboot-%s\n' "${version}" > ".coreboot-version" # needed for reproducible builds in coreboot

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

for romtype in txtmode vesafb
do
	if [ "${boardtarget}" = "kgpe-d16" ] || [ "${boardtarget}" = "kcma-d8" ] || [ "${boardtarget}" = "d945gclf" ]; then
		if [ "${romtype}" = "vesafb" ]; then
			printf "Only text-mode is reported to work on KGPE-D16, KCMA-D8, D945GCLF\n"
			continue
		fi
	fi

    if [ "${boardtarget}" = "qemu_i440fx_piix4" ] || [ "${boardtarget}" = "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/seabios/${boardtarget}/config" "config_vesafb"
    	sed 's/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/' < "config_vesafb" > "config_txtmode"
    else
    	# assume that the default config enables text-mode, duplicate and patch for framebuffer mode
    	cp "../../../resources/libreboot/config/seabios/${boardtarget}/config" "config_txtmode"
    	sed 's/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/' < "config_txtmode" > "config_vesafb"
    fi

	# Build coreboot ROM image
	make clean
	cp "../../../seabios/out/bios.bin.vga.elf" "payload.elf"
    mv "config_${romtype}" .config
    make -j${cores}
	rm -f "payload.elf"
	mv "build/coreboot.rom" "${boardtarget}_${romtype}.rom"

    # Now add SeaVGABIOS (SeaBIOS wrapper for coreboot native video init)
    ./util/cbfstool/cbfstool "${boardtarget}_${romtype}.rom" add -f ../../../seabios/out/vgabios.bin -n vgaroms/vgabios.bin -t raw 

	# .config no longer needed
	rm -f ".config"
done

# Clean up and prepare bin/ containing all ROM images

# move ROM images into the newly created directory
rm -Rf "${boardtarget:?}/"
mkdir "${boardtarget}/"
mv "${boardtarget}"*.rom "${boardtarget}/"

# delete old ROM images
rm -Rf "../../../bin/seabios/${boardtarget}/"
# put new ROM images in ../bin/grub/
[ -d "../../../bin/seabios/" ] || mkdir -p "../../../bin/seabios/"
mv "${boardtarget}/" "../../../bin/seabios/"

# version info file no longer needed
rm -f ".coreboot-version"

git checkout master
(
    cd "3rdparty/vboot/"
    git checkout master
)
)

printf "\n\n"