efi: Add a script to build an image for testing on UEFI
It is quite complicated to run U-Boot on QEMU since we have four different builds and they must use different versions of qemu and the UEFI binaries. Add a script to help. It requires U-Boot itself to be built. Once that is done you can use this script to build an image for use with qemu and optionally run it. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
committed by
Heinrich Schuchardt
Heinrich Schuchardt
parent
7fc93cae49
commit
6b2f82901e
193
scripts/build-efi.sh
Executable file
193
scripts/build-efi.sh
Executable file
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Script to build an EFI thing suitable for booting with QEMU, possibly running
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# it also.
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# This just an example. It assumes that
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# - you build U-Boot in ${ubdir}/<name> where <name> is the U-Boot board config
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# - /mnt/x is a directory used for mounting
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# - you have access to the 'pure UEFI' builds for QEMU
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#
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# UEFI binaries for QEMU used for testing this script:
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#
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# OVMF-pure-efi.i386.fd at
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# https://drive.google.com/file/d/1jWzOAZfQqMmS2_dAK2G518GhIgj9r2RY/view?usp=sharing
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# OVMF-pure-efi.x64.fd at
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# https://drive.google.com/file/d/1c39YI9QtpByGQ4V0UNNQtGqttEzS-eFV/view?usp=sharing
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set -e
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usage() {
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echo "Usage: $0 [-a | -p] [other opts]" 1>&2
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echo 1>&2
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echo " -a - Package up the app" 1>&2
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echo " -o - Use old EFI app build (before 32/64 split)" 1>&2
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echo " -p - Package up the payload" 1>&2
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echo " -P - Create a partition table" 1>&2
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echo " -r - Run QEMU with the image" 1>&2
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echo " -s - Run QEMU with serial only (no display)" 1>&2
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echo " -w - Use word version (32-bit)" 1>&2
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exit 1
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}
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# 32- or 64-bit EFI
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bitness=64
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# app or payload ?
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type=app
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# create a partition table and put the filesystem in that (otherwise put the
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# filesystem in the raw device)
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part=
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# run the image with QEMU
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run=
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# run QEMU without a display (U-Boot must be set to stdout=serial)
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serial=
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# before the 32/64 split of the app
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old=
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# Set ubdir to the build directory where you build U-Boot out-of-tree
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# We avoid in-tree build because it gets confusing trying different builds
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ubdir=/tmp/b/
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while getopts "aopPrsw" opt; do
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case "${opt}" in
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a)
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type=app
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;;
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p)
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type=payload
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;;
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r)
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run=1
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;;
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s)
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serial=1
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;;
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w)
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bitness=32
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;;
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o)
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old=1
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;;
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P)
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part=1
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;;
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*)
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usage
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;;
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esac
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done
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run_qemu() {
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extra=
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if [[ "${bitness}" = "64" ]]; then
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qemu=qemu-system-x86_64
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bios=OVMF-pure-efi.x64.fd
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else
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qemu=qemu-system-i386
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bios=OVMF-pure-efi.i386.fd
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fi
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if [[ -n "${serial}" ]]; then
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extra="-display none -serial mon:stdio"
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fi
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echo "Running ${qemu}"
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# Use 512MB since U-Boot EFI likes to have 256MB to play with
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"${qemu}" -bios "${bios}" \
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-m 512 \
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-drive id=disk,file="${IMG}",if=none,format=raw \
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-nic none -device ahci,id=ahci \
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-device ide-hd,drive=disk,bus=ahci.0 ${extra}
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}
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setup_files() {
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echo "Packaging ${BUILD}"
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mkdir -p $TMP
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cat >$TMP/startup.nsh <<EOF
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fs0:u-boot-${type}.efi
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EOF
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sudo cp ${ubdir}/${BUILD}/u-boot-${type}.efi $TMP
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# Can copy in other files here:
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#sudo cp ${ubdir}/$BUILD/image.bin $TMP/chromeos.rom
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#sudo cp /boot/vmlinuz-5.4.0-77-generic $TMP/vmlinuz
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}
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# Copy files into the filesystem
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copy_files() {
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sudo cp $TMP/* $MNT
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}
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# Create a filesystem on a raw device and copy in the files
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setup_raw() {
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mkfs.vfat "${IMG}" >/dev/null
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sudo mount -o loop "${IMG}" $MNT
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copy_files
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sudo umount $MNT
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}
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# Create a partition table and put the filesystem in the first partition
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# then copy in the files
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setup_part() {
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# Create a gpt partition table with one partition
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parted "${IMG}" mklabel gpt 2>/dev/null
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# This doesn't work correctly. It creates:
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# Number Start End Size File system Name Flags
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# 1 1049kB 24.1MB 23.1MB boot msftdata
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# Odd if the same is entered interactively it does set the FS type
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parted -s -a optimal -- "${IMG}" mkpart boot fat32 1MiB 23MiB
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# Map this partition to a loop device
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kp="$(sudo kpartx -av ${IMG})"
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read boot_dev<<<$(grep -o 'loop.*p.' <<< "${kp}")
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test "${boot_dev}"
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dev="/dev/mapper/${boot_dev}"
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mkfs.vfat "${dev}" >/dev/null
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sudo mount -o loop "${dev}" $MNT
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copy_files
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# Sync here since this makes kpartx more likely to work the first time
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sync
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sudo umount $MNT
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# For some reason this needs a sleep or it sometimes fails, if it was
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# run recently (in the last few seconds)
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if ! sudo kpartx -d "${IMG}" > /dev/null; then
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sleep .5
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sudo kpartx -d "${IMG}" > /dev/null || \
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echo "Failed to remove ${boot_dev}, use: sudo kpartx -d ${IMG}"
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fi
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}
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TMP="/tmp/efi${bitness}${type}"
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MNT=/mnt/x
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BUILD="efi-x86_${type}${bitness}"
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IMG=try.img
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if [[ -n "${old}" && "${bitness}" = "32" ]]; then
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BUILD="efi-x86_${type}"
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fi
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setup_files
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qemu-img create "${IMG}" 24M >/dev/null
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if [[ -n "${part}" ]]; then
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setup_part
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else
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setup_raw
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fi
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if [[ -n "${run}" ]]; then
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run_qemu
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fi
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