automation: expand arm32 dom0 test adding xl domain creation

As part of the arm32 dom0 test, also create a simple domU using xl. To
do that, we need the toolstack installed in the dom0 rootfs. We switch
to using the kernel and rootfs built by the Yocto arm32 job.

Remove the PCI node from the host device tree: it is unused but causes a
Linux hang at boot.

Use xen-watchdog to trigger the domU creation for convience
(/etc/local.d is not handled by rootfs.)

Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Michal Orzel <michal.orzel@amd.com>

automation/gitlab-ci/test.yaml

@@ -171,15 +171,7 @@ qemu-smoke-dom0-arm32-gcc:
     - ./automation/scripts/qemu-smoke-dom0-arm32.sh 2>&1 | tee ${LOGFILE}
   needs:
     - *arm32-test-needs
-    - debian-unstable-gcc-arm32
-
-qemu-smoke-dom0-arm32-gcc-debug:
-  extends: .qemu-arm32
-  script:
-    - ./automation/scripts/qemu-smoke-dom0-arm32.sh 2>&1 | tee ${LOGFILE}
-  needs:
-    - *arm32-test-needs
-    - debian-unstable-gcc-arm32-debug
+    - yocto-qemuarm
 
 qemu-smoke-dom0less-arm32-gcc:
   extends: .qemu-arm32

automation/scripts/qemu-smoke-dom0-arm32.sh

@@ -3,14 +3,37 @@
 set -ex
 
 cd binaries
-# Use the kernel from Debian
-curl --fail --silent --show-error --location --output vmlinuz http://http.us.debian.org/debian/dists/bullseye/main/installer-armhf/current/images/netboot/vmlinuz
-# Use a tiny initrd based on busybox from Alpine Linux
-curl --fail --silent --show-error --location --output initrd.tar.gz https://dl-cdn.alpinelinux.org/alpine/v3.15/releases/armhf/alpine-minirootfs-3.15.1-armhf.tar.gz
 
+mkdir rootfs
+cd rootfs
+tar xvf ../xen-image-minimal-qemuarm.tar.bz2
+mkdir -p ./root
+echo "name=\"test\"
+memory=400
+vcpus=1
+kernel=\"/root/zImage\"
+ramdisk=\"/root/initrd.cpio.gz\"
+extra=\"console=hvc0 root=/dev/ram0 rdinit=/bin/sh\"
+" > root/test.cfg
+echo "#!/bin/bash
+
+xl list
+
+xl create -c /root/test.cfg
+
+" > ./root/xen.start
+echo "bash /root/xen.start" >> ./etc/init.d/xen-watchdog
+
+curl --fail --silent --show-error --location --output initrd.tar.gz https://dl-cdn.alpinelinux.org/alpine/v3.15/releases/armhf/alpine-minirootfs-3.15.1-armhf.tar.gz
 mkdir rootfs
 cd rootfs
 tar xvzf ../initrd.tar.gz
+find . | cpio -H newc -o | gzip > ../root/initrd.cpio.gz
+cd ..
+rm -rf rootfs
+rm initrd.tar.gz
+
+cp ../zImage ./root
 find . | cpio -H newc -o | gzip > ../initrd.gz
 cd ..
 
@@ -20,22 +43,25 @@ curl -fsSLO https://github.com/qemu/qemu/raw/v5.2.0/pc-bios/efi-virtio.rom
    -machine virt \
    -machine virtualization=true \
    -smp 4 \
-   -m 1024 \
+   -m 2048 \
    -serial stdio \
    -monitor none \
    -display none \
    -machine dumpdtb=virt.dtb
 
+# XXX disable pci to avoid Linux hang
+fdtput virt.dtb -p -t s /pcie@10000000 status disabled
+
 # ImageBuilder
 echo 'MEMORY_START="0x40000000"
-MEMORY_END="0x80000000"
+MEMORY_END="0xC0000000"
 
 DEVICE_TREE="virt.dtb"
-XEN="xen"
-DOM0_KERNEL="vmlinuz"
+XEN="xen-qemuarm"
+DOM0_KERNEL="zImage"
 DOM0_RAMDISK="initrd.gz"
-DOM0_CMD="console=hvc0 earlyprintk clk_ignore_unused root=/dev/ram0 rdinit=/bin/sh"
-XEN_CMD="console=dtuart dom0_mem=512M bootscrub=0"
+DOM0_CMD="console=hvc0 earlyprintk clk_ignore_unused root=/dev/ram0 rdinit=/sbin/init"
+XEN_CMD="console=dtuart dom0_mem=1024M bootscrub=0"
 
 NUM_DOMUS=0
 
@@ -51,12 +77,12 @@ bash imagebuilder/scripts/uboot-script-gen -t tftp -d . -c config
 rm -f smoke.serial
 set +e
 echo "  virtio scan; dhcp; tftpb 0x40000000 boot.scr; source 0x40000000"| \
-timeout -k 1 240 \
+timeout -k 1 720 \
 ./qemu-system-arm \
    -machine virt \
    -machine virtualization=true \
    -smp 4 \
-   -m 1024 \
+   -m 2048 \
    -serial stdio \
    -monitor none \
    -display none \
@@ -66,5 +92,5 @@ timeout -k 1 240 \
    -bios /usr/lib/u-boot/qemu_arm/u-boot.bin |& tee smoke.serial
 
 set -e
-(grep -q "^/ #" smoke.serial) || exit 1
+(grep -q "Domain-0" smoke.serial && grep -q "^/ #" smoke.serial) || exit 1
 exit 0