From b0aa9e3bc1f1c8e91a6a1b7ce79700e571795584 Mon Sep 17 00:00:00 2001 From: Alper Nebi Yasak Date: Fri, 26 Aug 2022 13:27:23 +0300 Subject: [PATCH] build/payload: Add helper script to build U-Boot as payload This enables building U-Boot for boards which have config files in resources/u-boot, and copying built files that could be usable to make coreboot payloads. Right now, there is no such board in this repo. The most important file here is "u-boot.elf", which is a combination of the U-Boot binary and the appropriate device-tree file for the board. Building this needs CONFIG_REMAKE_ELF=y on the U-Boot part, and using this with CONFIG_PAYLOAD_ELF=y on the coreboot build works fine. Note that this isn't enough to make U-Boot-only releases, since low-level prerequisites like arm-trusted-firmware aren't passed in to the U-Boot build system. Coreboot builds its own copy of TF-A and sets it up on the board, so using these U-Boot builds as payloads should still work. Signed-off-by: Alper Nebi Yasak --- resources/scripts/build/payload/u-boot | 146 +++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100755 resources/scripts/build/payload/u-boot diff --git a/resources/scripts/build/payload/u-boot b/resources/scripts/build/payload/u-boot new file mode 100755 index 0000000..6c94a44 --- /dev/null +++ b/resources/scripts/build/payload/u-boot @@ -0,0 +1,146 @@ +#!/usr/bin/env bash + +# helper script: builds U-Boot source code +# +# Copyright (C) 2020, 2021 Leah Rowe +# Copyright (C) 2021 Vitali64 +# Copyright (C) 2022 Alper Nebi Yasak +# +# 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 . +# + +[ "x${DEBUG+set}" = 'xset' ] && set -v +set -u -e + +RET=0 + +# Build U-Boot +# --------------------------------------------------------------------- + +printf "Building U-Boot payloads\n" + +# Build for all boards if no argument is given +if [ "$#" -eq 0 ]; then + for board_dir in resources/u-boot/*; do + if [ -d "${board_dir}/config/" ]; then + set -- "$@" "${board_dir#resources/u-boot/}" + fi + done +fi + +[ ! -d "payload/" ] && mkdir -p payload/ +[ ! -d "payload/u-boot" ] && mkdir -p payload/u-boot/ + +# Appends additional version info to U-Boot +our_version="$(cat version)" +projectname="$(cat projectname)" +export LOCALVERSION="-${projectname}-${our_version}" + +for board in "$@"; do + board_dir="resources/u-boot/${board}" + rm -rf "payload/u-boot/${board}" + mkdir -p "payload/u-boot/${board}" + + ubtree="undefined" + arch="undefined" + + if [ ! -f "${board_dir}/board.cfg" ]; then + printf "%s: Target %s does not have a board.cfg. Skipping build.\n" \ + "build/payload/u-boot" "${board}" + RET=1 + continue + fi + + # Override the above defaults using board.cfg + source "${board_dir}/board.cfg" + + if [ "${ubtree}" = "undefined" ]; then + printf "%s: Target %s does not define a U-Boot tree. Skipping build.\n" \ + "build/payload/u-boot" "${board}" + RET=1 + continue + fi + if [ "${arch}" = "undefined" ]; then + printf "%s: Target %s does not define a CPU type. Skipping build.\n" \ + "build/payload/u-boot" "${board}" + RET=1 + continue + fi + + ubdir="u-boot/${board}" + if [ "${board}" != "${ubtree}" ]; then + ubdir="u-boot/${ubtree}" + fi + + if [ ! -d "${ubdir}" ]; then + ./download u-boot "$board" + fi + + if [ ! -d "${ubdir}" ]; then + printf "%s: Failed to download U-Boot for target %s. Skipping build.\n" \ + "build/payload/u-boot" "${board}" + RET=1 + continue + fi + + if [ "${arch}" = "x86_32" ] || [ "${arch}" = "x86_64" ]; then + export CROSS_COMPILE=x86_64-linux- + elif [ "${arch}" = "ARMv7" ]; then + export CROSS_COMPILE=arm-linux-gnueabi- + elif [ "${arch}" = "AArch64" ]; then + export CROSS_COMPILE=aarch64-linux-gnu- + fi + + for config in "${board_dir}/config"/*; do + if [ ! -f "${config}" ]; then + printf "%s: Target %s has no configs to build for. Skipping build.\n" \ + "build/payload/u-boot" "${board}" + RET=1 + continue + fi + + config_name="${config#$board_dir/config/}" + if [ "$config_name" = "default" ]; then + dest_dir="payload/u-boot/${board}" + else + dest_dir="payload/u-boot/${board}/${config_name}" + fi + mkdir -p "${dest_dir}" + + printf "%s: Building for target %s (config %s).\n" \ + "build/payload/u-boot" "${board}" "${config_name}" + + make -C "${ubdir}" distclean + + cp "${config}" "${ubdir}/.config" + make -C "${ubdir}" olddefconfig + make -C "${ubdir}" -j"$(nproc)" all + + for f in "${ubdir}"/u-boot{,.bin,.dtb,.img,.itb,.elf}; do + if [ -f "$f" ]; then + mv "$f" "${dest_dir}/" + fi + done + + make -C "${ubdir}" distclean + + printf "%s: Built for target %s (config %s).\n" \ + "build/payload/u-boot" "${board}" "${config_name}" + done +done + +printf "Done! U-Boot files are in payload/u-boot/\n\n" +exit $RET + +# ------------------- DONE ----------------------