From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dick Olsson Date: Fri, 18 Dec 2020 20:27:47 +0000 Subject: [Buildroot] [PATCH v3 08/11] configs/qemu_aarch64_sbsa_defconfig: new config for QEMU sbsa-ref In-Reply-To: <20201218202646.1060123-1-hi@senzilla.io> References: <20201218202646.1060123-1-hi@senzilla.io> Message-ID: <20201218202646.1060123-9-hi@senzilla.io> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net This introduces a configuration for the SBSA reference machine under QEMU that is intended for developing and testing firmware. It consists of ATF that load EDK2 as BL33 which in turn will load the kernel in EFI stub mode with ACPI. Signed-off-by: Dick Olsson --- Revision 3: * post-image.sh cleanup * Added host-qemu to config for testing Revision 2: * This board was renamed/moved to be specific for QEMU sbsa-ref * General simplification * Using set -e in the post-images.sh script --- board/qemu/aarch64-sbsa/genimage.cfg | 24 ++++++++++++++ board/qemu/aarch64-sbsa/linux.fragment | 1 + board/qemu/aarch64-sbsa/post-image.sh | 20 ++++++++++++ board/qemu/aarch64-sbsa/readme.txt | 34 ++++++++++++++++++++ configs/qemu_aarch64_sbsa_defconfig | 44 ++++++++++++++++++++++++++ 5 files changed, 123 insertions(+) create mode 100644 board/qemu/aarch64-sbsa/genimage.cfg create mode 100644 board/qemu/aarch64-sbsa/linux.fragment create mode 100755 board/qemu/aarch64-sbsa/post-image.sh create mode 100644 board/qemu/aarch64-sbsa/readme.txt create mode 100644 configs/qemu_aarch64_sbsa_defconfig diff --git a/board/qemu/aarch64-sbsa/genimage.cfg b/board/qemu/aarch64-sbsa/genimage.cfg new file mode 100644 index 0000000000..f653b1f35d --- /dev/null +++ b/board/qemu/aarch64-sbsa/genimage.cfg @@ -0,0 +1,24 @@ +image efi-part.vfat { + vfat { + file EFI { + image = "efi-part/EFI" + } + } + size = 32M +} + +image disk.img { + hdimage { + gpt = true + } + + partition boot { + partition-type = 0xEF + image = "efi-part.vfat" + } + + partition root { + partition-type = 0x83 + image = "rootfs.ext2" + } +} diff --git a/board/qemu/aarch64-sbsa/linux.fragment b/board/qemu/aarch64-sbsa/linux.fragment new file mode 100644 index 0000000000..03d553a18d --- /dev/null +++ b/board/qemu/aarch64-sbsa/linux.fragment @@ -0,0 +1 @@ +CONFIG_CMDLINE="root=/dev/vda2 rootwait console=ttyAMA0" diff --git a/board/qemu/aarch64-sbsa/post-image.sh b/board/qemu/aarch64-sbsa/post-image.sh new file mode 100755 index 0000000000..07343e2ea9 --- /dev/null +++ b/board/qemu/aarch64-sbsa/post-image.sh @@ -0,0 +1,20 @@ +#!/bin/bash + +set -e + +BOARD_DIR="$(dirname $0)" +EFI_DIR=${BINARIES_DIR}/efi-part/EFI/BOOT + +# Set up the kernel executable according to the UEFI standard. +mkdir -p ${EFI_DIR} +ln -sf ${BINARIES_DIR}/Image ${EFI_DIR}/bootaa64.efi + +# Function taking file $1 as input and outputs file $2 padded to size $3. +function resize_flash { + dd if=/dev/zero of="${BINARIES_DIR}/${2}" bs=1M count="${3}" + dd if="${BINARIES_DIR}/${1}" of="${BINARIES_DIR}/${2}" conv=notrunc +} + +# The QEMU sbsa machine expects flash devices to be 256M. +resize_flash SBSA_FLASH0.fd SBSA_FLASH0_RESIZED.fd 256 +resize_flash SBSA_FLASH1.fd SBSA_FLASH1_RESIZED.fd 256 diff --git a/board/qemu/aarch64-sbsa/readme.txt b/board/qemu/aarch64-sbsa/readme.txt new file mode 100644 index 0000000000..5b54ad87c4 --- /dev/null +++ b/board/qemu/aarch64-sbsa/readme.txt @@ -0,0 +1,34 @@ +Intro +===== + +The QEMU sbsa-ref machine is primarily meant for firmware development and +testing. Thus, the Linux kernel is not necessarily meant to boot to userland. + +A successful boot should be considered: + +1. ARM Trusted Firmware (ATF) boots until BL31 +2. ATF loads EDK2 (UEFI) as BL33 +3. EDK2 loads the Linux kernel in EFI stub mode +4. Linux begins to boot, exits boot services, begins loading the address map +5. Freeze + +Build +===== + + $ make qemu_aarch64_sbsa_defconfig + $ make + +Emulation +========= + +Run the emulation with: + + output/host/bin/qemu-system-aarch64 \ + -M sbsa-ref \ + -cpu cortex-a57 \ + -smp 4 \ + -m 1024 \ + -nographic \ + -drive file=output/images/SBSA_FLASH0_RESIZED.fd,if=pflash,format=raw \ + -drive file=output/images/SBSA_FLASH1_RESIZED.fd,if=pflash,format=raw \ + -hda output/images/disk.img diff --git a/configs/qemu_aarch64_sbsa_defconfig b/configs/qemu_aarch64_sbsa_defconfig new file mode 100644 index 0000000000..e82a12524a --- /dev/null +++ b/configs/qemu_aarch64_sbsa_defconfig @@ -0,0 +1,44 @@ +# Architecture +BR2_aarch64=y + +# Toolchain +BR2_TOOLCHAIN_BUILDROOT=y + +# System +BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0" + +# Filesystem / image +BR2_TARGET_ROOTFS_EXT2=y +BR2_TARGET_ROOTFS_EXT2_4=y +BR2_TARGET_ROOTFS_EXT2_SIZE="200M" +# BR2_TARGET_ROOTFS_TAR is not set +BR2_ROOTFS_POST_IMAGE_SCRIPT="board/qemu/aarch64-sbsa/post-image.sh support/scripts/genimage.sh" +BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/qemu/aarch64-sbsa/genimage.cfg" + +# Kernel +BR2_LINUX_KERNEL=y +BR2_LINUX_KERNEL_CUSTOM_VERSION=y +BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.4.53" +BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y +BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/qemu/aarch64-sbsa/linux.fragment" + +# Linux headers same as kernel, a 5.4 series +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_4=y + +# UEFI firmware +BR2_TARGET_EDK2=y +BR2_TARGET_EDK2_PLATFORM_QEMU_SBSA=y + +# ARM Trusted Firmware +BR2_TARGET_ARM_TRUSTED_FIRMWARE=y +BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="qemu_sbsa" +BR2_TARGET_ARM_TRUSTED_FIRMWARE_FIP=y + +# Host tools for genimage +BR2_PACKAGE_HOST_GENIMAGE=y +BR2_PACKAGE_HOST_DOSFSTOOLS=y +BR2_PACKAGE_HOST_MTOOLS=y + +# host-qemu for testing +BR2_PACKAGE_HOST_QEMU=y +BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y -- 2.25.1