Re: [PATCH 1/2] automation: Add support for using XTF for arm64 testing

[Stefano Stabellini <sstabellini@kernel.org>]

On Thu, 15 Dec 2022, Michal Orzel wrote:
> Introduce support for using XTF on Arm to perform low-level testing.
> For the purpose of the CI testing, let's use the fork [1] from upstream
> XTF with implemented support for arm64 (the upstream XTF only supports
> x86).
> 
> Add a new script under automation/scripts to be used by the CI XTF test
> jobs to perform the following tasks:
>  - Compiling XTF,
>  - Creating dom0 rootfs,
>  - Generating u-boot script using ImageBuilder,
>  - Running Xen with Linux as dom0 and XTF as a dom0less domU using Qemu,
>  - Checking test result.
> 
> The script takes the name of the XTF test to run as a first parameter.
> 
> [1] https://gitlab.com/xen-project/fusa/xtf.git (branch xtf-arm)
> 
> Signed-off-by: Michal Orzel <michal.orzel@amd.com>
> ---
>  automation/scripts/qemu-xtf-dom0less-arm64.sh | 97 +++++++++++++++++++
>  1 file changed, 97 insertions(+)
>  create mode 100755 automation/scripts/qemu-xtf-dom0less-arm64.sh
> 
> diff --git a/automation/scripts/qemu-xtf-dom0less-arm64.sh b/automation/scripts/qemu-xtf-dom0less-arm64.sh
> new file mode 100755
> index 000000000000..321d1abc543b
> --- /dev/null
> +++ b/automation/scripts/qemu-xtf-dom0less-arm64.sh
> @@ -0,0 +1,97 @@
> +#!/bin/bash
> +
> +set -ex
> +
> +# Name of the XTF test
> +xtf_test=$1
> +
> +# Message returned by XTF in case of success
> +passed="Test result: SUCCESS"
> +
> +# XXX QEMU looks for "efi-virtio.rom" even if it is unneeded
> +curl -fsSLO https://github.com/qemu/qemu/raw/v5.2.0/pc-bios/efi-virtio.rom
> +./binaries/qemu-system-aarch64 \
> +   -machine virtualization=true \
> +   -cpu cortex-a57 -machine type=virt \
> +   -m 2048 -smp 2 -display none \
> +   -machine dumpdtb=binaries/virt-gicv2.dtb
> +
> +# XXX disable pl061 to avoid Linux crash
> +fdtput binaries/virt-gicv2.dtb -p -t s /pl061@9030000 status disabled
> +
> +# XTF
> +# Build a single XTF test passed as a first parameter to the script.
> +# Build XTF with GICv2 support to match Qemu configuration and with SBSA UART
> +# support, so that the test will use an emulated UART for printing messages.
> +# This will allow us to run the test on both debug and non-debug Xen builds.
> +rm -rf xtf
> +git clone https://gitlab.com/xen-project/fusa/xtf.git -b xtf-arm
> +make -C xtf TESTS=tests/${xtf_test} CONFIG_SBSA_UART=y CONFIG_GICV2=y -j$(nproc)
> +cp xtf/tests/${xtf_test}/test-mmu64le-${xtf_test} binaries/xtf-test
> +
> +# DOM0 rootfs

Given that we don't actually need dom0 for anything, maybe we could only
run xtf as the only domU guest without dom0 (pure dom0less
configuration)?


> +mkdir -p rootfs
> +cd rootfs
> +tar xzf ../binaries/initrd.tar.gz
> +mkdir proc
> +mkdir run
> +mkdir srv
> +mkdir sys
> +rm var/run
> +cp -ar ../binaries/dist/install/* .
> +
> +echo "#!/bin/bash
> +
> +export LD_LIBRARY_PATH=/usr/local/lib
> +bash /etc/init.d/xencommons start
> +
> +/usr/local/lib/xen/bin/init-dom0less
> +" > etc/local.d/xen.start
> +
> +chmod +x etc/local.d/xen.start
> +echo "rc_verbose=yes" >> etc/rc.conf
> +find . | cpio -H newc -o | gzip > ../binaries/dom0-rootfs.cpio.gz
> +cd ..
> +
> +# ImageBuilder
> +echo 'MEMORY_START="0x40000000"
> +MEMORY_END="0xC0000000"
> +
> +XEN="xen"
> +DEVICE_TREE="virt-gicv2.dtb"
> +
> +DOM0_KERNEL="Image"
> +DOM0_RAMDISK="dom0-rootfs.cpio.gz"

So here we would skip DOM0_KERNEL and DOM0_RAMDISK


> +XEN_CMD="console=dtuart dom0_mem=512M"

we probably don't need dom0_mem=512M


> +DOMU_KERNEL[0]="xtf-test"
> +DOMU_MEM[0]="128"
> +
> +NUM_DOMUS=1

but we would keep this


> +LOAD_CMD="tftpb"
> +UBOOT_SOURCE="boot.source"
> +UBOOT_SCRIPT="boot.scr"' > binaries/config
> +
> +rm -rf imagebuilder
> +git clone https://gitlab.com/ViryaOS/imagebuilder
> +bash imagebuilder/scripts/uboot-script-gen -t tftp -d binaries/ -c binaries/config
> +
> +# Run the test
> +rm -f smoke.serial
> +set +e
> +echo "  virtio scan; dhcp; tftpb 0x40000000 boot.scr; source 0x40000000"| \
> +timeout -k 1 240 \
> +./binaries/qemu-system-aarch64 \
> +    -machine virtualization=true \
> +    -cpu cortex-a57 -machine type=virt \
> +    -m 2048 -monitor none -serial stdio \
> +    -smp 2 \
> +    -no-reboot \
> +    -device virtio-net-pci,netdev=n0 \
> +    -netdev user,id=n0,tftp=binaries \
> +    -bios /usr/lib/u-boot/qemu_arm64/u-boot.bin |& tee smoke.serial
> +
> +set -e
> +(grep -q "^Welcome to Alpine Linux" smoke.serial && grep -q "${passed}" smoke.serial) || exit 1
> +exit 0