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#!/usr/bin/env sh
# 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${DEBUG+set}" = 'xset' ] && set -v
set -u -e
. "include/err.sh"
grubcfgsdir="resources/grub"
keymap=""
. "${grubcfgsdir}/modules.list"
main()
{
printf "Creating GRUB payloads and configuration files\n"
handle_dependencies
# Separate GRUB payload per keymap to save space in ROM.
for keylayoutfile in ${grubcfgsdir}/keymap/*.gkb; do
[ -f "${keylayoutfile}" ] || continue
build_grub_payloads "${keylayoutfile}"
done
printf "Done! Check elf/grub/ to see the files.\n\n"
}
handle_dependencies()
{
[ -d "grub/" ] || \
./fetch grub || \
err "handle_dependencies: cannot fetch grub"
[ -f "grub/grub-mkstandalone" ] || \
./build grub utils || \
err "handle_dependencies: cannot build grub utils"
[ -d "elf/grub" ] || \
mkdir -p elf/grub || \
err "handle_dependencies: cannot mkdir elf/grub"
rm -f elf/grub/* || \
err "handle_dependencies: cannot rm inside: elf/grub/"
}
build_grub_payloads()
{
keylayoutfile=${1}
[ -f "${keylayoutfile}" ] || continue
keymap="${keylayoutfile##${grubcfgsdir}/keymap/}"
keymap="${keymap%.gkb}"
build_grub_elf "${keylayoutfile}"
create_grub_config
printf "Created 'elf/grub/grub_%s.elf' and configs.'\n" "${keymap}"
}
build_grub_elf()
{
keylayoutfile=${1}
gcfg="/boot/grub/grub.cfg=${grubcfgsdir}"
gcfg="${gcfg}/config/grub_memdisk.cfg"
grubk="/boot/grub/layouts/${keymap}.gkb=${keylayoutfile}"
grub/grub-mkstandalone \
--grub-mkimage="grub/grub-mkimage" \
-O i386-coreboot \
-o "elf/grub/grub_${keymap}.elf" \
-d grub/grub-core/ \
--fonts= --themes= --locales= \
--modules="${grub_modules}" \
--install-modules="${grub_install_modules}" \
"${gcfg}" "${grubk}" || \
err "build_grub_elf: cannot build grub payload (grub-mkstandalone)"
}
create_grub_config()
{
sed "s/usqwerty/${keymap}/" < "${grubcfgsdir}/config/grub.cfg" \
> "elf/grub/grub_${keymap}.cfg" || \
err "create_grub_config: sed failed: grub.cfg"
sed "s/grubtest.cfg/grub.cfg/" < "elf/grub/grub_${keymap}.cfg" \
> "elf/grub/grub_${keymap}_test.cfg" || \
err "create_grub_config: sed failed: grubtest.cfg"
}
main $@
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