unify build/defconfig and modify/defconfig

they fundamentally perform the same action: copy
the .config file and run make, but build runs
make-all, while modify runs make-oldconfig or
make-menuconfig

merge this functionality together

also:
./handle config file

^ this is the new syntax, not:
./build defconfig for

for example:

./handle config file -b coreboot x200_8mb <-- build x200 rom
./handle config file -m coreboot x200_8mb <-- modify configs
./handle config file -u coreboot x200_8mb <-- make-oldconfig
./handle config file -u seabios
./handle config file -b u-boot

yes, 1 script and a sloccount reduction of 52. and the audit?
it continues.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 256 insertions, 0 deletions

diff --git a/resources/scripts/handle/config/file b/resources/scripts/handle/config/file
new file mode 100755
index 00000000..6c4bd86e
--- /dev/null
+++ b/resources/scripts/handle/config/file
@@ -0,0 +1,256 @@
+#!/usr/bin/env sh
+
+#  helper script: build elf files on build systems that use defconfig/kconfig
+#
+#	Copyright (C) 2022 Alper Nebi Yasak <alpernebiyasak@gmail.com>
+#	Copyright (C) 2022 Ferass El Hafidi <vitali64pmemail@protonmail.com>
+#	Copyright (C) 2023 Leah Rowe <leah@libreboot.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/>.
+
+# you could probably build *linux* with this script!
+
+[ "x${DEBUG+set}" = 'xset' ] && set -v
+set -u -e
+
+projectname="$(cat projectname)"
+our_version="$(cat version)"
+
+export LOCALVERSION="-${projectname}-${our_version}"
+
+arch=""
+cfgsdir=""
+codedir=""
+config=""
+config_name=""
+crossgcc_ada=""
+elfdir=""
+listfile=""
+mode=""
+project=""
+target=""
+target_dir=""
+tree=""
+
+main()
+{
+	while getopts b:m:u: option
+	do
+		case "${1}" in
+		-b)
+			mode="all"
+			shift ;;
+		-u)
+			mode="oldconfig"
+			shift ;;
+		-m)
+			mode="menuconfig"
+			shift ;;
+		*)
+			err "Invalid option" ;;
+		esac
+		project="${OPTARG}"
+		shift
+	done
+	[ -z "${mode}" ] && err "mode not given (-m menuconfig or -u oldconfig)"
+
+	elfdir="elf/${project}"
+
+	cfgsdir="resources/${project}"
+	[ -d "${cfgsdir}" ] || err "directory, ${cfgsdir}, does not exist"
+
+	listfile="${cfgsdir}/build.list"
+	[ -f "${listfile}" ] || err "list file, ${listfile}, does not exist"
+
+	# Build for all targets if no argument is given
+	if [ "$#" -eq 0 ]; then
+		for target_dir in "${cfgsdir}"/*; do
+			[ ! -d "${target_dir}/config/" ] && \
+				continue
+			set -- "$@" "${target_dir#${cfgsdir}/}"
+		done
+	fi
+
+	[ ! -d "${elfdir}" ] && [ "${mode}" = "all" ] && \
+		mkdir -p ${elfdir}/
+
+	for x in "$@"; do
+		target="${x}"
+		printf "Running 'make %s' for project '%s, target '%s''\n" \
+		    "${mode}" "${project}" "${target}"
+		if [ "${project}" = "coreboot" ] && [ "${mode}" = "all" ]; then
+			./update blobs download ${target} || err "blobutil"
+		fi
+		handle_defconfig || exit 1
+	done
+
+	[ "${mode}" = "all" ] && \
+		printf "Done! The files are stored under %s/\n\n" ${elfdir}
+}
+
+handle_defconfig()
+{
+	handle_dependencies "${target}" || return 1
+
+	for y in "${target_dir}/config"/*; do
+		[ ! -f "${y}" ] && continue
+		config="${y}"
+		config_name="${config#$target_dir/config/}"
+
+		printf "build/defconfig/%s %s: handling config %s\n" \
+		    ${project} ${target} ${config_name}
+
+		[ "${mode}" != "all" ] || check_config || continue
+		run_make_command
+		[ "${mode}" != "all" ] || copy_elf
+	done
+}
+
+handle_dependencies()
+{
+	target_dir="${cfgsdir}/${target}"
+	mkdir -p "${elfdir}/${target}"
+
+	tree="undefined"
+	arch="undefined"
+
+	[ ! -f "${target_dir}/target.cfg" ] && \
+		err "build/${project} ${target}: Missing target.cfg"
+
+	# Override the above defaults using target.cfg
+	. "${target_dir}/target.cfg" # source
+
+	[ "${tree}" = "undefined" ] && \
+		err "build/${project} %{target}: tree undefined"
+	[ "${arch}" = "undefined" ] && \
+		err "build/${project} ${target}: undefined cpu type"
+
+	codedir="${project}/${tree}"
+	[ -d "${codedir}" ] || \
+		./fetch_trees "${project}" "$target" || exit 1
+
+	# u-boot and coreboot are both compiled with coreboot's crossgcc
+	if [ "${project}" = "coreboot" ] || [ "${project}" = "u-boot" ]; then
+		[ "${mode}" != "all" ] || check_cross_compiler || err "crossgcc"
+	fi
+}
+
+# set up cross-compiler (coreboot crossgcc) for u-boot and coreboot
+# (seabios and grub currently use hostcc, not crossgcc)
+check_cross_compiler()
+{
+	[ "${crossgcc_ada}" = "y" ] || [ "${crossgcc_ada}" = "n" ] || \
+		crossgcc_ada="y"
+	[ "${crossgcc_ada}" != "y" ] && \
+		export BUILD_LANGUAGES=c
+
+	cbdir="coreboot/${tree}"
+	[ "${project}" != "coreboot" ] && \
+		cbdir="coreboot/default" # not u-boot (e.g. linux will use it)
+	[ "${project}" = "u-boot" ] && \
+		cbdir="coreboot/cros" # u-boot only used on coreboot/cros
+	# only true if not building coreboot:
+	[ -d "${cbdir}" ] || \
+		./fetch_trees coreboot ${cbdir#coreboot/} || \
+		    err "check_cross_compiler"
+
+	if [ "${arch}" = "x86_32" ] || [ "${arch}" = "x86_64" ]; then
+		if [ ! -d "${cbdir}/util/crossgcc/xgcc/i386-elf/" ]; then
+			# Even for 64-bit machines, coreboot builds 32-bit ROM
+			# images, so we only need to worry about i386-elf
+			make -C "${cbdir}" crossgcc-i386 CPUS=$(nproc) || \
+			    return 1
+		fi
+		case "$(uname -m)" in
+			x86*|i*86|amd64) : ;;
+			*) export CROSS_COMPILE=i386-elf- ;;
+		esac
+	elif [ "${arch}" = "ARMv7" ]; then
+		if [ ! -d "${cbdir}/util/crossgcc/xgcc/arm-eabi/" ]; then
+			make -C "${cbdir}" crossgcc-arm CPUS=$(nproc) || \
+			    return 1
+		fi
+		case "$(uname -m)" in
+			arm|arm32|armv6*|armv7*) : ;;
+			*) export CROSS_COMPILE=arm-eabi- ;;
+		esac
+	elif [ "${arch}" = "AArch64" ]; then
+		if [ ! -d "${cbdir}/util/crossgcc/xgcc/aarch64-elf/" ]; then
+			make -C "${cbdir}" crossgcc-aarch64 CPUS=$(nproc) || \
+			    return 1
+		fi
+		# aarch64 also needs armv7 toolchain for arm-trusted-firmware
+		if [ ! -d "${cbdir}/util/crossgcc/xgcc/arm-eabi/" ]; then
+			make -C "${cbdir}" crossgcc-arm CPUS=$(nproc) || \
+			    return 1
+		fi
+		case "$(uname -m)" in
+			arm64|aarch64) : ;;
+			*) export CROSS_COMPILE=aarch64-elf- ;;
+		esac
+	fi
+
+	# we *must* ensure that u-boot's build system uses crossgcc first
+	export PATH="$(pwd)/${cbdir}/util/crossgcc/xgcc/bin:$PATH"
+}
+
+check_config()
+{
+	[ ! -f "${config}" ] && \
+		err "build/${project} ${target}: configs missing"
+
+	dest_dir="${elfdir}/${target}/${config_name}"
+	for elftest in "${dest_dir}"/*; do
+		if [ -f "${elftest}" ]; then
+			printf "Build already exists, so skipping build\n" 1>&2
+			return 1
+		fi
+	done
+	mkdir -p "${dest_dir}"
+}
+
+run_make_command()
+{
+	make -C "${codedir}" distclean || err "run_make_command"
+
+	cp "${config}" "${codedir}/.config" || err "run_make_command"
+	[ "${mode}" != "all" ] || make -C "${codedir}" silentoldconfig || \
+	    make -C "${codedir}" oldconfig || : # don't error on oldconfig
+
+	[ "${project}" = "coreboot" ] && [ "${mode}" = "all" ] && \
+		printf "%s\n" "${our_version}" > "${codedir}/.coreboot-version"
+	make -C "${codedir}" -j$(nproc) ${mode} || err "run_make_command"
+}
+
+copy_elf()
+{
+	for f in $(cat "${listfile}"); do
+		[ -f "${codedir}/$f" ] && cp "${codedir}/${f}" "${dest_dir}/"
+	done
+
+	make -C "${codedir}" distclean || \
+	    make -C "${codedir}" clean || err "copy_elf"
+}
+
+err()
+{
+	[ -z "${codedir}" ] || \
+		make -C "${codedir}" distclean \
+		    || make -C "${codedir}" clean || :
+
+	printf "build/defconfig error %s\n" "${1}" 1>&2
+	exit 1
+}
+
+main $@