meta-egvirt, templates: Add virtio-aarch64 machine

This machine is intended to run in ARMv8 virtualized environment that
provides VirtIO devices.

AGL machine configuration files are based on qemuarm64 machine from
meta-agl branch master commit e1da0efcd2eece82b0326798cfeaeb8dd48797fc.

Yocto machine configuration files are based on qemuarm64 machine from
Poky branch dunfell commit 4e931b1d05018923dc145cd97f6f965f5cb6e1a5.

Yocto Linux Kernel is used as recommended in [1]. Its metadata for the
created machine are based on qemuarm64-standard.scc from
yocto-kernel-cache branch yocto-5.4 commit
4aeda12f7f7eb84613ae1fe6e22cd9cd9790c20b.

The rationale behind creating new machine is a wish to have a machine
that could run on other hypervisor/virtual machine monitor that
implements VirtIO, not necessary QEMU. For now, virtio-aarch64 machine
runs under QEMU and OpenSynergy COQOS Hypervisor.

virtio-aarch64 machine includes following changes comparing to
qemuarm64:
* use virtio-gpu instead of VGA display (to be upstreamed to work in
  conjunction with runqemu gl, sdl, etc. options)
* use virtio-bus instead of PCI bus QEMU devices
* remove unneeded configurations

[1]: https://www.yoctoproject.org/docs/3.1.2/bsp-guide/bsp-guide.html#released-bsp-recommendations

Bug-AGL: SPEC-3668
Change-Id: Iccfee8613de63770d371a57f0caab1c1eba8d912
Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@opensynergy.com>

3 files changed, 73 insertions, 0 deletions

diff --git a/meta-egvirt/conf/include/agl_virtio-aarch64.inc b/meta-egvirt/conf/include/agl_virtio-aarch64.inc
new file mode 100644
index 00000000..e3faaf7b
--- /dev/null
+++ b/meta-egvirt/conf/include/agl_virtio-aarch64.inc
@@ -0,0 +1,14 @@
+# Build updatable image. Only takes effect when sota.bbclass is inherited
+DISTRO_FEATURES_append = " sota"
+
+# Root device
+ROOT_VM = "root=PARTUUID=${DISK_SIGNATURE}-02"
+
+# Use our own wks file
+WKS_FILE = "directdisk.wks.in"
+
+# Simplest possible option
+AGL_DEFAULT_IMAGE_FSTYPES = "ext4"
+
+# Need to run QEMU with virtio-gpu device
+PACKAGECONFIG_append_pn-qemu-system-native = " virglrenderer glx gtk+"
diff --git a/meta-egvirt/conf/machine/include/virtio.inc b/meta-egvirt/conf/machine/include/virtio.inc
new file mode 100644
index 00000000..b4022d52
--- /dev/null
+++ b/meta-egvirt/conf/machine/include/virtio.inc
@@ -0,0 +1,23 @@
+PREFERRED_PROVIDER_virtual/egl ?= "mesa"
+PREFERRED_PROVIDER_virtual/libgl ?= "mesa"
+PREFERRED_PROVIDER_virtual/libgles1 ?= "mesa"
+PREFERRED_PROVIDER_virtual/libgles2 ?= "mesa"
+
+MACHINE_FEATURES = "alsa usbgadget screen vfat"
+
+MACHINEOVERRIDES =. "virtio-all:"
+
+IMAGE_FSTYPES += "tar.bz2 ext4"
+
+# Don't include kernels in standard images
+RDEPENDS_${KERNEL_PACKAGE_NAME}-base = ""
+
+# Use a common kernel recipe for all VirtIO machines
+PREFERRED_PROVIDER_virtual/kernel ??= "linux-yocto"
+
+EXTRA_IMAGEDEPENDS += "qemu-native qemu-helper-native"
+
+IMAGE_CLASSES += "qemuboot"
+
+# most driver fails to compile
+MOST_DRIVERS ?= ""
diff --git a/meta-egvirt/conf/machine/virtio-aarch64.conf b/meta-egvirt/conf/machine/virtio-aarch64.conf
new file mode 100644
index 00000000..d92d4394
--- /dev/null
+++ b/meta-egvirt/conf/machine/virtio-aarch64.conf
@@ -0,0 +1,36 @@
+#@TYPE: Machine
+#@NAME: VirtIO ARMv8 machine
+#@DESCRIPTION: Machine configuration for running an ARMv8 system on VirtIO based platform
+
+require conf/machine/include/arm/arch-armv8a.inc
+require conf/machine/include/virtio.inc
+
+KERNEL_IMAGETYPE = "Image"
+
+SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0"
+SERIAL_CONSOLES_CHECK = "${SERIAL_CONSOLES}"
+
+# For runqemu
+QB_SYSTEM_NAME = "qemu-system-aarch64"
+QB_MACHINE = "-machine virt"
+QB_CPU = "-cpu cortex-a57"
+QB_CPU_KVM = "-cpu host -machine gic-version=3"
+QB_MEM = "-m 2048"
+# Standard Serial console
+QB_KERNEL_CMDLINE_APPEND = "console=ttyAMA0"
+# Ensure virtio-mmio support VirtIO 1.0 required by virtio-gpu
+QB_OPT_APPEND = "-global virtio-mmio.force-legacy=false"
+# TODO: upstream to OE-core runqemu
+QB_OPT_APPEND += "-device virtio-gpu-device -display gtk,gl=on -show-cursor"
+# Virtio input
+QB_OPT_APPEND += "-device virtio-mouse-device -device virtio-keyboard-device"
+# Add the 'virtio-rng-device' device otherwise the guest may run out of entropy
+QB_OPT_APPEND += "-object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-device,rng=rng0"
+# Virtio Networking support
+QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
+QB_NETWORK_DEVICE = "-device virtio-net-device,netdev=net0,mac=@MAC@"
+# Virtio block device
+QB_ROOTFS_OPT = "-drive id=disk0,file=@ROOTFS@,if=none,format=raw -device virtio-blk-device,drive=disk0"
+# Virtio serial console
+QB_SERIAL_OPT = "-device virtio-serial-device -chardev null,id=virtcon -device virtconsole,chardev=virtcon"
+QB_TCPSERIAL_OPT = "-device virtio-serial-device -chardev socket,id=virtcon,port=@PORT@,host=127.0.0.1 -device virtconsole,chardev=virtcon"