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#!/usr/bin/env bash
# generate GRUB ELF files (coreboot payload) and configuration files
#
# Copyright (C) 2014,2015,2020,2021,2023 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${DEBUG+set}" = 'xset' ] && set -v
set -u -e
grubcfgsdir="resources/grub"
keymap=""
source "${grubcfgsdir}/modules.list"
main()
{
printf "Creating GRUB payloads and configuration files\n"
[ ! -d "grub/" ] && \
./download grub
[ ! -f "grub/grub-mkstandalone" ] && \
./build module grub
[ ! -d "payload/" ] && \
mkdir -p payload/
[ ! -d "payload/grub" ] && \
mkdir -p payload/grub/
rm -f payload/grub/*
# Separate GRUB payload per keymap to save space in ROM.
for keylayoutfile in ${grubcfgsdir}/keymap/*.gkb; do
build_grub_payloads "${keylayoutfile}"
done
printf "Done! Check payload/grub/ to see the files.\n\n"
}
build_grub_payloads()
{
keylayoutfile=${1}
if [ ! -f "${keylayoutfile}" ]; then
continue
fi
keymap="${keylayoutfile##${grubcfgsdir}/keymap/}"
keymap="${keymap%.gkb}"
build_grub_elf "${keylayoutfile}"
create_grub_config
printf "Created 'payload/grub/grub_%s.elf' and configs.'\n" \
"${keymap}"
}
build_grub_elf()
{
keylayoutfile=${1}
gcfg="/boot/grub/grub.cfg=${grubcfgsdir}"
gcfg="${gcfg}/config/grub_memdisk.cfg"
grubk="/boot/grub/layouts/${keymap}.gkb=${keylayoutfile}"
grub/grub-mkstandalone \
--grub-mkimage="grub/grub-mkimage" \
-O i386-coreboot \
-o payload/grub/grub_${keymap}.elf \
-d grub/grub-core/ \
--fonts= --themes= --locales= \
--modules="${grub_modules}" \
--install-modules="${grub_install_modules}" \
${gcfg} ${grubk}
}
create_grub_config()
{
sed "s/usqwerty/${keymap}/" \
< ${grubcfgsdir}/config/grub.cfg \
> payload/grub/grub_${keymap}.cfg
sed "s/grubtest.cfg/grub.cfg/" \
< payload/grub/grub_${keymap}.cfg \
> payload/grub/grub_${keymap}_test.cfg
}
main $@
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