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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'
FONTS='fonts'
FONT_FILE='font-file'
FONT_PROJECT='font-project'
FORMAT='format'
MODMIN='modules-minimal'
PLATFORM='platform'
PREFIX='prefix'
SIZE='size'
grub_arch() {
project_file_contents "$project" "$CONFIGS" "$ARCH" "$@"
}
grub_font_file() {
project_file_contents "$project" "$CONFIGS" "$FONT_FILE" "$@"
}
grub_font_project() {
project_file_contents "$project" "$CONFIGS" "$FONT_PROJECT" "$@"
}
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_font() {
# Font project-specific filenames and paths
local font_file="$(grub_font_file "$FONTS" "$@")"
local font_project="$(grub_font_project "$FONTS" "$@")"
local font_build_dir="$root/$BUILD/$font_project"
local grub_mkfont="$sources_path/grub-mkfont"
# GRUB font directory for outputting the built PF2 file
mkdir -p "$build_path/$FONTS"
"$grub_mkfont" --output="$build_path/$FONTS/${font_file%.*}.pf2" \
"$font_build_dir/$font_file"
}
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="$1"
local keymap_out_path="$build_path/keymaps"
local grub_mklayout="$sources_path/grub-mklayout"
local grub_kbd_layout="$keymap_out_path/$raw_layout.gkb"
if ! [[ -e "$keymap_out_path" ]]; then
mkdir -p "$keymap_out_path"
elif ! [[ -d "$keymap_out_path" ]]; then
printf '\n%s\n' "Error: File $keymap_out_path is not a directory" 1>&2
return 1
fi
"$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 modmin_path="$(grub_modmin_path "$target" "$@")"
local -a modmin=($(< "$modmin_path"))
local grub_mkimage="$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" \
"${modmin[@]}"
cat "$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 ${floppy_size}KiB in size" 1>&2
return 1
fi
}
grub_build_standalone_image() {
local arch="$(grub_arch "$target" "$@")"
local format="$(grub_format "$target" "$@")"
local prefix="$(grub_prefix "$target" "$@")"
local config_path="$(grub_config_path "$target" "$@")"
local modmin_path="$(grub_modmin_path "$target" "$@")"
local -a modmin=($(< "$modmin_path"))
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="${modmin[*]}" \
--directory="$grub_module_dir" \
--format="$format" \
--output="$grubimg" \
/boot/grub/grub.cfg="$config_path"
}
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