| #!/bin/bash |
| |
| # Copyright 2011 The ChromiumOS Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # make_netboot.sh --board=[board] |
| # |
| # This script builds a kernel image bundle with the factory install shim |
| # included as initramfs. Generated image, along with the netboot firmware |
| # are placed in a "netboot" subfolder. |
| |
| SCRIPT_ROOT="$(dirname "$(readlink -f "$0")")" |
| # shellcheck source=build_library/build_common.sh |
| . "${SCRIPT_ROOT}/build_library/build_common.sh" || exit 1 |
| |
| # Script must be run inside the chroot. |
| restart_in_chroot_if_needed "$@" |
| |
| # shellcheck disable=SC2154 |
| DEFINE_string board "${DEFAULT_BOARD}" \ |
| "The board to build an image for." |
| DEFINE_string image_dir "" "Path to the folder to store netboot images." |
| |
| # Parse command line. |
| FLAGS "$@" || exit 1 |
| eval set -- "${FLAGS_ARGV}" |
| |
| # shellcheck disable=SC2154 |
| # shellcheck source=build_library/board_options.sh |
| . "${BUILD_LIBRARY_DIR}/board_options.sh" || exit 1 |
| |
| switch_to_strict_mode |
| # build_packages artifact output. |
| SYSROOT="/build/${FLAGS_board}" |
| # build_image artifact output. |
| |
| if [ -n "${FLAGS_image_dir}" ]; then |
| cd "${FLAGS_image_dir}" || die |
| else |
| # shellcheck disable=SC2154 |
| cd "${CHROOT_TRUNK_DIR}/src/build/images/${FLAGS_board}/latest" || die |
| fi |
| |
| # Generate staging dir for netboot files. |
| info_run sudo rm -rf netboot |
| info_run mkdir -p netboot |
| |
| # Get netboot firmware. |
| FIRMWARE_PATTERN="firmware/image*.net.bin" |
| # shellcheck disable=SC2206 |
| FIRMWARE_PATHS=("${SYSROOT}"/${FIRMWARE_PATTERN}) |
| # When there is no netboot firmware found, filename expansion fails and the |
| # array still contains the original pattern string, so we need to check if the |
| # first file in the array actually exists to know if we find any firmware. |
| if [ -e "${FIRMWARE_PATHS[0]}" ]; then |
| info "Copying netboot firmware" |
| for firmware_path in "${FIRMWARE_PATHS[@]}"; do |
| info_run cp "${firmware_path}" netboot/ |
| done |
| else |
| warn "Skipping netboot firmware: ${SYSROOT}/${FIRMWARE_PATTERN} not present?" |
| fi |
| |
| # Create temporary emerge root |
| temp_build_path="$(mktemp -d bk_XXXXXXXX)" || die "Failed to create tempdir." |
| |
| # Build initramfs network boot image |
| info "Building kernel" |
| export USE="fbconsole vtconsole factory_netboot_ramfs i2cdev vfat" |
| export EMERGE_BOARD_CMD="emerge-${FLAGS_board}" |
| emerge_custom_kernel "${temp_build_path}" |
| |
| # Place kernel image under 'netboot' |
| KERNEL_PATH="/boot/vmlinuz" |
| if [ -f "${temp_build_path}${KERNEL_PATH}" ]; then |
| info "Generating netboot kernel ${KERNEL_PATH}" |
| info_run cp "${temp_build_path}${KERNEL_PATH}" netboot/ |
| else |
| warn "No ${KERNEL_PATH} found in your board." |
| fi |
| |
| info_run sudo rm -rf "${temp_build_path}" |