arm-autonomy: Create arm64-autonomy-guest machine

Create a minimalistic BSP to be used as an arm-autonomy-guest on ARM64.
The BSP is enabling ARM64 and SMP in the kernel configuration and is
enabling the arm-autonomy-guest in DISTRO_FEATURES.
Rework README.md file.

Change-Id: I7ef0176a3426748c4b66cdec5801aa34229187ba
Issue-Id: SCM-767
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
Reviewed-by: Diego Sueiro <diego.sueiro@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-autonomy/README.md

@@ -42,6 +42,11 @@ BSPs
 ----
 This layer is adding the following machines:
 
+* arm64-autonomy-guest: this machines creates a minimal BSP suitable to be used
+  as an autonomy guest. It is in fact only activating ARM64 architecture and
+  SMP in the linux kernel and is enabling the DISTRO_FEATURE
+  arm-autonomy-guest.
+
 Images
 ------
 This layer is adding the following images:

meta-arm-autonomy/conf/machine/arm64-autonomy-guest.conf

@@ -0,0 +1,17 @@
+#@TYPE: Machine
+#@NAME: Autonomy Guest ARM64 machine
+#@DESCRIPTION: Machine configuration for ARM64 Autonomy Guest
+
+TUNE_FEATURES = "aarch64"
+
+require conf/machine/include/arm/arch-armv8a.inc
+
+KERNEL_IMAGETYPE = "Image"
+
+IMAGE_FSTYPES += "tar.bz2"
+
+PREFERRED_PROVIDER_virtual/kernel = "linux-yocto"
+PREFERRED_VERSION_linux-yocto ?= "4.19%"
+
+DISTRO_FEATURES += "arm-autonomy-guest"
+

meta-arm-autonomy/recipes-kernel/linux/arm-autonomy-kmeta/bsp/arm-autonomy/arm64-autonomy-guest-standard.scc

@@ -0,0 +1,5 @@
+define KMACHINE arm64-autonomy-guest
+define KTYPE standard
+define KARCH arm64
+
+include arm64-autonomy-guest.scc

meta-arm-autonomy/recipes-kernel/linux/arm-autonomy-kmeta/bsp/arm-autonomy/arm64-autonomy-guest.cfg

@@ -0,0 +1,2 @@
+CONFIG_ARM64=y
+CONFIG_SMP=y

meta-arm-autonomy/recipes-kernel/linux/arm-autonomy-kmeta/bsp/arm-autonomy/arm64-autonomy-guest.scc

@@ -0,0 +1,6 @@
+include ktypes/standard/standard.scc
+include features/input/input.scc
+include features/net/net.scc
+include cfg/timer/no_hz.scc
+
+kconf hardware arm64-autonomy-guest.cfg

meta-arm-autonomy/recipes-kernel/linux/linux-arm-autonomy.inc

@@ -14,3 +14,8 @@ KERNEL_FEATURES += "${@bb.utils.contains('DISTRO_FEATURES', \
 # Add xen guest drivers to kernel if arm-autonomy-guest is activated
 KERNEL_FEATURES += "${@bb.utils.contains('DISTRO_FEATURES', \
         'arm-autonomy-guest', 'features/arm-autonomy/xen-guest.scc', '', d)}"
+
+# Add support for arm64-autonomy-guest machine
+COMPATIBLE_MACHINE_arm64-autonomy-guest = "arm64-autonomy-guest"
+KMACHINE_arm64-autonomy-guest = "arm64-autonomy-guest"
+