Rework KVM demo configuration

Changes:
- Move KVM demo configuration and image recipes to a new sub-layer,
  meta-agl-kvm-demo, to keep things that may not be buildable with
  just the agl-demo feature separate to avoid confusion.  It will
  hopefully also avoid clutter in recipes-platform/images.
  This sub-layer is pulled in when the agl-kvm setup feature is
  given to aglsetup.sh.
- Remove the agl-kvm-host-kuksa and agl-kvm-host-audio setup
  features.
- Add new *-guest and *-guest-preconfigured flavors of the Flutter
  IVI and IC images under meta-agl-kvm-demo that that have the
  desired configuration changes baked in.
- Add required qemu-config recipe variants for the new guest image
  flavors. At the moment there is more duplication of configuration
  for this than is desired, and some reworking of agl-qemu-runner
  configuration may come as a follow up to avoid this.
- Remove qemu-config recipe variants for unused Qt guest images.
  If it becomes desirable to use the Qt demo images as guests this
  can be revisited.
- Added agl-kvm-demo-flutter-preconfigured image variant that
  supports the full demo setup (i.e. "green machine" with steering
  wheel, equivalent to CES 2024 demos).

NOTES:
- The agl-kvm-demo image remains and builds roughly the same image
  as before, with the KUKSA.val databroker running in the IVI guest
  and cluster support enabled. Replacing this image with a bbclass
  abstraction and an e.g. agl-kvm-demo-flutter image is under
  consideration.

Bug-AGL: SPEC-5138

Change-Id: I64936208fd032e5ba47366e3a7ff572dc18338e4
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/29905
Tested-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>

3 files changed, 109 insertions, 0 deletions

diff --git a/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/agl-qemu-runner.bb b/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/agl-qemu-runner.bb
new file mode 100644
index 000000000..b3e3a67dd
--- /dev/null
+++ b/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/agl-qemu-runner.bb
@@ -0,0 +1,25 @@
+SUMMARY     = "AGL simple QEMU runner script"
+LICENSE     = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
+
+inherit systemd allarch
+
+SRC_URI = "file://agl-qemu-runner.sh \
+           file://agl-qemu-runner@.service \
+"
+
+do_configure[noexec] = "1"
+do_compile[noexec] = "1"
+
+do_install() {
+    # Install template unit
+    install -d ${D}${systemd_system_unitdir}
+    install -m 0644 ${WORKDIR}/agl-qemu-runner@.service ${D}${systemd_system_unitdir}/
+
+    # Install script
+    install -D -m 0755 ${WORKDIR}/agl-qemu-runner.sh ${D}${sbindir}/agl-qemu-runner.sh
+}
+
+FILES:${PN} += "${systemd_system_unitdir}"
+
+RDEPENDS:${PN} += "bash qemu"
diff --git a/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/files/agl-qemu-runner.sh b/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/files/agl-qemu-runner.sh
new file mode 100755
index 000000000..f0136b6d5
--- /dev/null
+++ b/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/files/agl-qemu-runner.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+# SPDX-License-Identifier: Apache-2.0
+
+if [ -z "$1" ]; then
+    echo "Usage: ${basename $0} <image name>"
+    exit 1
+fi
+image="$1"
+
+conf="/etc/agl-qemu-runner/${image}.conf"
+if [ ! -f "$conf" ]; then
+    echo "No configuration file $conf"
+    exit 1
+fi
+
+. $conf
+
+arch="$(uname -m)"
+if [ -z "$QEMU_IMAGE_ARCH" ]; then
+    QEMU_IMAGE_ARCH="virtio-${arch}"
+fi
+
+disk="/var/lib/machines/${image}/${image}-${QEMU_IMAGE_ARCH}.ext4"
+if [ ! -f "$disk" ]; then
+    echo "No disk image for $image"
+    exit 1
+fi
+kernel="/var/lib/machines/${image}/Image-${QEMU_IMAGE_ARCH}.bin"
+if [ ! -f "$kernel" ]; then
+    echo "No kernel for $image"
+    exit 1
+fi
+
+TASKSET_CMD=""
+if [ -n "$QEMU_TASKSET_CPUS" ]; then
+    TASKSET_CMD="taskset -c ${QEMU_TASKSET_CPUS}"
+fi
+    
+export SDL_VIDEODRIVER=wayland 
+export XDG_RUNTIME_DIR=/run/user/1001
+# The following may be needed if the socket is not wayland-0, as SDL
+# seems to lack detection logic for that case.
+#export WAYLAND_DISPLAY=wayland-1
+
+# This sets the XDG app id, which we need for setting outputs with
+# agl-compositor.  If QEMU_XDG_APP_ID is not set, the image name
+# is used.
+export SDL_VIDEO_WAYLAND_WMCLASS="${QEMU_XDG_APP_ID:-${image}}"
+
+${TASKSET_CMD} \
+qemu-system-${arch} \
+	-enable-kvm \
+	-machine virt,gic-version=max,iommu=smmuv3 \
+	-cpu host \
+	${QEMU_SMP_OPT} \
+	${QEMU_MEM_OPT} \
+	-kernel $kernel \
+	-append "${QEMU_KERNEL_CMDLINE_APPEND}" \
+	-drive id=disk0,file=${disk},format=raw,if=none \
+	-serial mon:pty \
+	-object rng-random,filename=/dev/urandom,id=rng0 \
+	-device virtio-blk-device,drive=disk0 \
+	-device virtio-rng-device,rng=rng0 \
+	${QEMU_NET_OPT} \
+	${QEMU_INPUT_OPT} \
+	-global virtio-mmio.force-legacy=false \
+	-device virtio-gpu-gl-device \
+	-display sdl,gl=on -vga std \
+	${QEMU_AUDIO_OPT} \
+	${QEMU_CAN_OPT} \
+	${QEMU_EXTRA_OPT} \
+	-full-screen
diff --git a/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/files/agl-qemu-runner@.service b/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/files/agl-qemu-runner@.service
new file mode 100644
index 000000000..d19c529f0
--- /dev/null
+++ b/meta-agl-kvm-demo/recipes-extended/agl-qemu-runner/files/agl-qemu-runner@.service
@@ -0,0 +1,12 @@
+[Unit]
+Requires=native-shell-client.service
+After=native-shell-client.service
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/agl-qemu-runner.sh %i
+#Restart=on-failure
+Restart=no
+
+[Install]
+WantedBy=multi-user.target