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#!/usr/bin/env bash
# Copyright (C) 2017 Andrew Robbins <contact@andrewrobbins.info>
#
# 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/>.
ARCH='arch'
CONFIG='config'
FORMAT='format'
MODMIN='modules-minimal'
PLATFORM='platform'
PREFIX='prefix'
SIZE='size'
grub_arch() {
project_file_contents "${project}" "${CONFIGS}" "${ARCH}" "$@"
}
grub_format() {
project_file_contents "${project}" "${CONFIGS}" "${FORMAT}" "$@"
}
grub_platform() {
project_file_contents "${project}" "${CONFIGS}" "${PLATFORM}" "$@"
}
grub_prefix() {
project_file_contents "${project}" "${CONFIGS}" "${PREFIX}" "$@"
}
grub_size() {
project_file_contents "${project}" "${CONFIGS}" "${SIZE}" "$@"
}
grub_config_path() {
project_file_path "${project}" "${CONFIGS}" "${CONFIG}" "$@"
}
grub_modmin_path() {
project_file_path "${project}" "${CONFIGS}" "${MODMIN}" "$@"
}
grub_copy_modules() {
local grub_module_dir="${sources_path}/grub-core"
local keep_dir="${build_path}/$(grub_format "${target}" "$@")"
mkdir -p "${keep_dir}"
cp -a "${grub_module_dir}"/*.@(mod|lst) "${keep_dir}"
}
grub_build_utils() {
(
# If arch and/or platform files don't exist,
# the configure script will pick a reasonable default
local arch="$(grub_arch "${target}" "$@")"
local platform="$(grub_platform "${target}" "$@")"
cd "${sources_path}" || return
if git_project_check "${repository}"; then
./autogen.sh
fi
./configure --target="${arch}" --with-platform="${platform}"
make -j"${TASKS}"
)
}
grub_build_layout() {
local raw_layout="${1##*/}"
local raw_layout_path="$1"
local grub_mklayout="${sources_path}/grub-mklayout"
local grub_kbd_layout="${build_path}/${raw_layout}.gkb"
"${grub_mklayout}" --output="${grub_kbd_layout}" --input="${raw_layout_path}"
}
grub_build_bootable_image() {
local arch="$(grub_arch "${target}" "$@")"
local format="$(grub_format "${target}" "$@")"
local prefix="$(grub_prefix "${target}" "$@")"
local config_path="$(grub_config_path "${target}" "$@")"
local grub_mkimage="${sources_path}/grub-mkimage"
local grub_module_dir="${sources_path}/grub-core"
local grubimg="${build_path}/grub.img"
local grub_bootimg="${grub_module_dir}/boot.img"
local grub_bootable_img="${build_path}/grub2"
"${grub_mkimage}" \
--config="${config_path}" \
--directory="${grub_module_dir}" \
--output="${grubimg}" \
--format="${format}" \
--prefix="${prefix}" \
cbfs configfile
cat "${grub_bootimg}" "${grubimg}" > "${grub_bootable_img}"
rm -f "${grubimg}"
}
grub_build_floppy_image() {
local grubimg="${build_path}/grub2"
local tempfile="${build_path}/temp.file"
if ! ( grub_build_bootable_image "$@" ); then
printf '\n%s\n\n' "Error: Failed to build a GRUB image" 1>&2
return 1
fi
local size="$(grub_size "${target}" "$@")"
# Pre-allocate a floppy-sized image
# SeaBIOS requires floppy images to have a "correct" size
if ! [[ -e "${tempfile}" ]]; then
dd if=/dev/zero of="${tempfile}" bs=1024 count="${size:-160}"
else
printf '\n%s\n\n' "Error: File ${tempfile} already exists!" 1>&2
return 1
fi
local -i grubimg_size="$(stat -c %s "${grubimg}")"
local -i floppy_size="$((${size:-160} * 1024))"
# Graft the GRUB image onto the blank floppy image
if ((grubimg_size <= floppy_size)); then
dd if="${grubimg}" of="${tempfile}" bs=1 conv=notrunc
rm -f "${grubimg}"
mv "${tempfile}" "${grubimg}"
else
printf '\n%s' "Error: Image ${grubimg##*/} is too large; " 1>&2
printf '%s\n\n' "it must be less than ${size}KiB in size." 1>&2
return 1
fi
}
grub_build_standalone_image() {
local arch="$(grub_arch "${target}" "$@")"
local format="$(grub_format "${target}" "$@")"
local prefix="$(grub_prefix "${target}" "$@")"
local config_path="$(grub_config_path "${target}" "$@")"
local grubimg="${build_path}/grub2"
local grub_mkimage="${sources_path}/grub-mkimage"
local grub_mkstandalone="${sources_path}/grub-mkstandalone"
local grub_module_dir="${sources_path}/grub-core"
"${grub_mkstandalone}" \
--grub-mkimage="${grub_mkimage}" \
--fonts='' \
--themes='' \
--locales='' \
--install-modules='cbfs configfile' \
--directory="${grub_module_dir}" \
--format="${format}" \
--output="${grubimg}" \
/boot/grub/grub.cfg="${config_path}"
}
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