[PATCH 05/35] efi: Add a script for building and testing U-Boot on UEFI

[Simon Glass]

It is quite complicating 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.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 doc/develop/uefi/u-boot_on_efi.rst |   4 ++
 scripts/build-efi.sh               | 111 +++++++++++++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100755 scripts/build-efi.sh

diff --git a/doc/develop/uefi/u-boot_on_efi.rst b/doc/develop/uefi/u-boot_on_efi.rst
index c9a41bc919f..59ee3885295 100644
--- a/doc/develop/uefi/u-boot_on_efi.rst
+++ b/doc/develop/uefi/u-boot_on_efi.rst
@@ -96,6 +96,10 @@ that EFI does not support booting a 64-bit application from a 32-bit
 EFI (or vice versa). Also it will often fail to print an error message if
 you get this wrong.
 
+You may find the script `scripts/build-efi.sh` helpful for building and testing
+U-Boot on UEFI on QEMU. It also includes links to UEFI binaries dating from
+2021.
+
 
 Inner workings
 --------------
diff --git a/scripts/build-efi.sh b/scripts/build-efi.sh
new file mode 100755
index 00000000000..8770c1fb311
--- /dev/null
+++ b/scripts/build-efi.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Script to build an EFI thing suitable for booting with qemu, possibly running
+# it also.
+
+# This just an example. It assumes that
+
+# - you build U-Boot in /tmp/b/<name> where <name> is the U-Boot board config
+# - /mnt/x is a directory used for mounting
+# - you have access to the 'pure UEFI' builds for qemu
+#
+# UEFI binaries for QEMU used for testing this script:
+#
+# OVMF-pure-efi.i386.fd at
+# https://drive.google.com/file/d/1jWzOAZfQqMmS2_dAK2G518GhIgj9r2RY/view?usp=sharing
+
+# OVMF-pure-efi.x64.fd at
+# https://drive.google.com/file/d/1c39YI9QtpByGQ4V0UNNQtGqttEzS-eFV/view?usp=sharing
+
+set -e
+
+usage() {
+	echo "Usage: $0 [-a | -p]" 1>&2
+	echo 1>&2
+	echo "   -a   - Package up the app" 1>&2
+	echo "   -o   - Use old EFI app build (before 32/64 split)" 1>&2
+	echo "   -p   - Package up the payload" 1>&2
+	echo "   -r   - Run qemu with the image" 1>&2
+	echo "   -w   - Use word version (32-bit)" 1>&2
+	exit 1
+}
+
+# 32- or 64-bit EFI
+bitness=64
+
+# app or payload ?
+type=app
+
+# run the image with qemu
+run=
+
+# before the 32/64 split of the app
+old=
+
+while getopts "aoprw" opt; do
+	case "${opt}" in
+	a)
+		type=app
+		;;
+	p)
+		type=payload
+		;;
+	r)
+		run=1
+		;;
+	w)
+		bitness=32
+		;;
+	o)
+		old=1
+		;;
+	*)
+		usage
+		;;
+	esac
+done
+
+run_qemu() {
+	if [[ "${bitness}" = "64" ]]; then
+		qemu=qemu-system-x86_64
+		bios=OVMF-pure-efi.x64.fd
+	else
+		qemu=qemu-system-i386
+		bios=OVMF-pure-efi.i386.fd
+	fi
+	echo "Running ${qemu}"
+	"${qemu}" -bios "${bios}" \
+		-drive id=disk,file=try.img,if=none,format=raw \
+		-nic none -device ahci,id=ahci \
+		-device ide-hd,drive=disk,bus=ahci.0
+}
+
+TMP="/tmp/efi${bitness}${type}"
+MNT=/mnt/x
+BUILD="efi-x86_${type}${bitness}"
+
+if [[ -n "${old}" && "${bitness}" = "32" ]]; then
+	BUILD="efi-x86_${type}"
+fi
+
+echo "Packaging ${BUILD}"
+qemu-img create try.img 24M >/dev/null
+mkfs.vfat try.img >/dev/null
+mkdir -p $TMP
+cat >$TMP/startup.nsh <<EOF
+fs0:u-boot-${type}.efi
+EOF
+sudo cp /tmp/b/$BUILD/u-boot-${type}.efi $TMP
+
+# Can copy in other files here:
+#sudo cp /tmp/b/$BUILD/image.bin $TMP/chromeos.rom
+#sudo cp /boot/vmlinuz-5.4.0-77-generic $TMP/vmlinuz
+
+sudo mount -o loop try.img $MNT
+sudo cp $TMP/* $MNT
+sudo umount $MNT
+
+if [[ -n "${run}" ]]; then
+	run_qemu
+fi
-- 
2.33.0.153.gba50c8fa24-goog