support/testing: test_xen: test on 32-bit Arm v7

Add a TestXenArmv7 class with its related files in an arm/ subfolder
under test_xen/, to test Xen on 32-bit Arm v7.

We cannot boot with UEFI in this case; we use a custom U-Boot script,
which creates the Xen configuration Devicetree during boot.

Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

support/testing/tests/package/test_xen.py

@@ -125,3 +125,44 @@ class TestXen(TestXenBase):
 
         # Run Xen test.
         self.run_xen_test(arch="aarch64", options=qemu_opts)
+
+
+class TestXenArmv7(TestXenBase):
+    # Test Xen on 32b Arm v7.
+    # Boot flow: Qemu Devicetree -> U-Boot -> Xen -> Linux
+    # Xen does not boot with UEFI on 32-bit Arm v7.
+    # We use U-Boot and a script to load the Dom0 images and amend the
+    # Devicetree for Xen dynamically.
+    # We have a custom kernel config to reduce build time.
+    config = TestXenBase.base_config + \
+        """
+        BR2_arm=y
+        BR2_cortex_a15=y
+        BR2_ROOTFS_OVERLAY="support/testing/tests/package/test_xen/common/overlay \
+                            support/testing/tests/package/test_xen/arm/overlay"
+        BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
+        BR2_ROOTFS_POST_SCRIPT_ARGS="-c support/testing/tests/package/test_xen/arm/genimage.cfg"
+        BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="support/testing/tests/package/test_xen/arm/linux.config"
+        BR2_TARGET_UBOOT_BOARD_DEFCONFIG="qemu_arm"
+        BR2_PACKAGE_HOST_UBOOT_TOOLS=y
+        BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT=y
+        BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT_SOURCE="support/testing/tests/package/test_xen/arm/boot.cmd"
+        """
+
+    def test_run(self):
+        uboot_bin = os.path.join(self.builddir, "images", "u-boot.bin")
+        disk_img = os.path.join(self.builddir, "images", "disk.img")
+
+        # We need to run Qemu with virtualization to run Xen.
+        qemu_opts = [
+            "-bios", uboot_bin,
+            "-cpu", "cortex-a15",
+            "-device", "virtio-blk-device,drive=hd0",
+            "-drive", f"file={disk_img},if=none,format=raw,id=hd0",
+            "-m", "1G",
+            "-machine", "virt,virtualization=on,acpi=off",
+            "-smp", "2"
+        ]
+
+        # Run Xen test.
+        self.run_xen_test(arch="armv7", options=qemu_opts)

support/testing/tests/package/test_xen/arm/boot.cmd

@@ -0,0 +1,23 @@
+fdt addr ${fdtcontroladdr}
+fdt resize
+
+fdt set /chosen \#address-cells <1>
+fdt set /chosen \#size-cells <1>
+
+fdt mknod /chosen modules
+
+fdt mknod /chosen/modules module@0
+fdt set /chosen/modules/module@0 compatible "xen,linux-zimage" "xen,multiboot-module"
+load ${devtype} ${devnum} ${kernel_addr_r} zImage
+fdt set /chosen/modules/module@0 reg <${kernel_addr_r} 0x${filesize} >
+
+fdt mknod /chosen/modules module@1
+fdt set /chosen/modules/module@1 compatible "xen,linux-initrd" "xen,multiboot-module"
+load ${devtype} ${devnum} ${ramdisk_addr_r} rootfs.cpio
+fdt set /chosen/modules/module@1 reg <${ramdisk_addr_r} 0x${filesize} >
+
+load ${devtype} ${devnum} ${loadaddr} xen
+fdt set /chosen xen,dom0-bootargs "console=hvc0"
+fdt set /chosen xen,xen-bootargs "dom0_mem=256M loglvl=all guest_loglvl=all"
+fdt print /chosen
+bootz ${loadaddr} - ${fdtcontroladdr}

support/testing/tests/package/test_xen/arm/genimage.cfg

@@ -0,0 +1,25 @@
+image boot.vfat {
+	vfat {
+		files = {
+			"boot.scr",
+			"xen",
+			"zImage",
+			"rootfs.cpio"
+		}
+	}
+
+	size = 128M
+}
+
+image disk.img {
+	hdimage {
+		partition-table-type = "gpt"
+	}
+
+	partition boot {
+		image = "boot.vfat"
+		partition-type-uuid = F
+		offset = 32K
+		bootable = true
+	}
+}

support/testing/tests/package/test_xen/arm/linux.config

@@ -0,0 +1,163 @@
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+# CONFIG_CPU_ISOLATION is not set
+CONFIG_CGROUPS=y
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_INITRAMFS_PRESERVE_MTIME is not set
+CONFIG_EXPERT=y
+CONFIG_PERF_EVENTS=y
+CONFIG_ARCH_VIRT=y
+CONFIG_ARCH_VEXPRESS=y
+CONFIG_ARCH_VEXPRESS_TC2_PM=y
+CONFIG_SMP=y
+CONFIG_MCPM=y
+CONFIG_NR_CPUS=16
+CONFIG_HIGHMEM=y
+CONFIG_ARCH_FORCE_MAX_ORDER=11
+CONFIG_XEN=y
+CONFIG_CPU_IDLE=y
+CONFIG_ARM_CPUIDLE=y
+CONFIG_ARM_PSCI_CPUIDLE=y
+CONFIG_VFP=y
+CONFIG_NEON=y
+CONFIG_KERNEL_MODE_NEON=y
+# CONFIG_SUSPEND is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_CMDLINE_PARTITION=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_SWAP is not set
+# CONFIG_COMPAT_BRK is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_IP_PNP_RARP=y
+CONFIG_QRTR=m
+CONFIG_PAGE_POOL_STATS=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_ARM_SCMI_PROTOCOL=y
+CONFIG_TRUSTED_FOUNDATIONS=y
+CONFIG_MTD=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_CFI=y
+CONFIG_MTD_CFI_INTELEXT=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_OF=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_SIZE=65536
+CONFIG_VIRTIO_BLK=y
+CONFIG_SRAM=y
+CONFIG_NETDEVICES=y
+CONFIG_VIRTIO_NET=y
+CONFIG_SYSTEMPORT=m
+CONFIG_MACB=y
+CONFIG_FTGMAC100=m
+CONFIG_HIX5HD2_GMAC=y
+CONFIG_MVMDIO=y
+CONFIG_SMSC911X=y
+CONFIG_STMMAC_ETH=y
+CONFIG_DWMAC_DWC_QOS_ETH=y
+CONFIG_MDIO_BITBANG=y
+CONFIG_MDIO_MSCC_MIIM=m
+# CONFIG_WLAN is not set
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_GPIO_DECODER=m
+CONFIG_INPUT_ADXL34X=m
+# CONFIG_SERIO_SERPORT is not set
+CONFIG_SERIO_AMBAKMI=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=5
+CONFIG_SERIAL_8250_RUNTIME_UARTS=5
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_VIRTIO_CONSOLE=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_TCG_TPM=m
+CONFIG_SPMI=y
+CONFIG_GPIO_DWAPB=y
+CONFIG_GPIO_MPC8XXX=y
+CONFIG_GPIO_PL061=y
+CONFIG_GPIO_SYSCON=y
+CONFIG_POWER_RESET_BRCMKONA=y
+CONFIG_POWER_RESET_GPIO=y
+CONFIG_POWER_RESET_GPIO_RESTART=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_POWER_RESET_SYSCON_POWEROFF=y
+# CONFIG_HWMON is not set
+CONFIG_WATCHDOG=y
+CONFIG_ARM_SP805_WATCHDOG=y
+CONFIG_DW_WATCHDOG=y
+CONFIG_BCMA=y
+CONFIG_BCMA_HOST_SOC=y
+CONFIG_BCMA_DRIVER_GMAC_CMN=y
+CONFIG_BCMA_DRIVER_GPIO=y
+CONFIG_MFD_PM8XXX=y
+# CONFIG_HID_SUPPORT is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_EDAC=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_PL031=y
+CONFIG_RTC_DRV_PM8XXX=m
+CONFIG_DMADEVICES=y
+CONFIG_PL330_DMA=y
+CONFIG_DW_DMAC=y
+CONFIG_VIRTIO_MMIO=y
+# CONFIG_VHOST_MENU is not set
+CONFIG_COMMON_CLK_SCMI=y
+CONFIG_HWSPINLOCK=y
+CONFIG_ARM_GT_INITIAL_PRESCALER_VAL=2
+CONFIG_MICROCHIP_PIT64B=y
+CONFIG_MAILBOX=y
+CONFIG_PL320_MBOX=y
+CONFIG_MEMORY=y
+CONFIG_PWM=y
+CONFIG_RESET_SIMPLE=y
+# CONFIG_ARM_PMU is not set
+CONFIG_RAS=y
+CONFIG_FSI=m
+CONFIG_FSI_MASTER_GPIO=m
+CONFIG_FSI_MASTER_HUB=m
+CONFIG_FSI_MASTER_ASPEED=m
+CONFIG_FSI_SCOM=m
+CONFIG_FSI_SBEFIFO=m
+CONFIG_FSI_OCC=m
+CONFIG_INTERCONNECT=y
+CONFIG_COUNTER=m
+CONFIG_EXT4_FS=y
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY_USER is not set
+CONFIG_AUTOFS_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_NTFS_FS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_UTF8=y
+CONFIG_CRC_CCITT=m
+CONFIG_PRINTK_TIME=y
+CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
+CONFIG_DEBUG_INFO_REDUCED=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_FS=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_FTRACE is not set

support/testing/tests/package/test_xen/arm/overlay/etc/xen/dom1.cfg

@@ -0,0 +1,5 @@
+name="dom1"
+kernel="/mnt/zImage"
+ramdisk="/mnt/rootfs.cpio"
+memory=256
+cmdline="console=hvc0"