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>

6 files changed, 69 insertions, 0 deletions

diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/aarch64.cfg b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/aarch64.cfg
new file mode 100644
index 00000000..25381e13
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/aarch64.cfg
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: MIT
+#
+# ARM64
+#
+CONFIG_ARM64=y
+CONFIG_64BIT=y
+
+#
+# Bus support
+#
+CONFIG_ARM_AMBA=y
+
+#
+# Non-8250 serial port support
+#
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+
+#
+# RTC
+#
+CONFIG_RTC_HCTOSYS=y
+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
+
+#
+# on-CPU RTC drivers
+#
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_PL031=y
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/aarch64.scc b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/aarch64.scc
new file mode 100644
index 00000000..1de6faf9
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/aarch64.scc
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: MIT
+kconf hardware aarch64.cfg
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio-aarch64-standard.scc b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio-aarch64-standard.scc
new file mode 100644
index 00000000..3a241a0e
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio-aarch64-standard.scc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: MIT
+define KMACHINE virtio-aarch64
+define KTYPE standard
+define KARCH arm64
+
+include ktypes/standard/standard.scc
+include aarch64.scc
+include cfg/8250.scc
+include cfg/virtio.scc
+include virtio.scc
+
+# enable the ability to run 32 bit apps
+include arch/arm/32bit-compat.scc
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio.cfg b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio.cfg
new file mode 100644
index 00000000..b8b36e7a
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio.cfg
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: MIT
+
+# TODO: upstream to yocto-kernel-cache/cfg/8250.cfg
+CONFIG_SERIAL_OF_PLATFORM=y
+
+# Remove since PCI is not enabled
+# CONFIG_SERIAL_8250_PCI is not set
+
+# TODO: upstream to yocto-kernel-cache/cfg/virtio.cfg
+CONFIG_VSOCKETS=y
+CONFIG_VSOCKETS_DIAG=y
+CONFIG_VIRTIO_VSOCKETS=y
+CONFIG_VIRTIO_VSOCKETS_COMMON=y
+
+# Needed for CONFIG_DRM_VIRTIO_GPU
+CONFIG_DRM=y
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio.scc b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio.scc
new file mode 100644
index 00000000..333ac42b
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-aarch64/virtio.scc
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: MIT
+kconf hardware virtio.cfg
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto_%.bbappend b/meta-egvirt/recipes-kernel/linux/linux-yocto_%.bbappend
new file mode 100644
index 00000000..ed48a135
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto_%.bbappend
@@ -0,0 +1,7 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/linux-yocto:"
+
+SRC_URI_append_virtio-aarch64 = " \
+    file://virtio-aarch64;type=kmeta;destsuffix=virtio-aarch64 \
+"
+
+COMPATIBLE_MACHINE_virtio-aarch64 = "virtio-aarch64"