meta-gem5: extract the gem5 recipe and machine into a dedicate meta-gem5 layer

meta-arm-bsp no longer has to depend on meta-oe, and in the future
meta-gem5 could be moved out of meta-arm.

Change-Id: I49fa8f793b60af8c0cdb7e04b27fb53fc094cdad
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-bsp/conf/layer.conf

@@ -9,5 +9,5 @@ BBFILE_COLLECTIONS += "meta-arm-bsp"
 BBFILE_PATTERN_meta-arm-bsp = "^${LAYERDIR}/"
 BBFILE_PRIORITY_meta-arm-bsp = "6"
 
-LAYERDEPENDS_meta-arm-bsp = "core openembedded-layer meta-arm"
+LAYERDEPENDS_meta-arm-bsp = "core meta-arm"
 LAYERSERIES_COMPAT_meta-arm-bsp = "warrior zeus dunfell"

meta-arm-bsp/recipes-kernel/linux/linux-yocto-arm-platforms.inc

@@ -27,15 +27,3 @@ KMACHINE_fvp-base = "fvp"
 #
 COMPATIBLE_MACHINE_juno = "juno"
 KMACHINE_juno = "juno"
-
-#
-# Gem5 arm64 KMACHINE
-#
-COMPATIBLE_MACHINE_gem5-arm64 = "gem5-arm64"
-KMACHINE_gem5-arm64 = "gem5-arm64"
-SRC_URI_append_gem5-arm64 = " file://dts/gem5-arm64;subdir=add-files"
-
-do_patch_append_gem5-arm64() {
-    tar -C ${WORKDIR}/add-files/dts -cf - gem5-arm64 | \
-        tar -C arch/arm64/boot/dts -xf -
-}

meta-gem5/COPYING.MIT

@@ -0,0 +1,17 @@
+Permission is hereby granted, free of charge, to any person obtaining a copy 
+of this software and associated documentation files (the "Software"), to deal 
+in the Software without restriction, including without limitation the rights 
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
+copies of the Software, and to permit persons to whom the Software is 
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in 
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 
+THE SOFTWARE.

meta-gem5/conf/layer.conf

@@ -0,0 +1,13 @@
+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+# We have recipes-* directories, add to BBFILES
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
+            ${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "meta-gem5"
+BBFILE_PATTERN_meta-gem5 = "^${LAYERDIR}/"
+BBFILE_PRIORITY_meta-gem5 = "6"
+
+LAYERDEPENDS_meta-gem5 = "core openembedded-layer"
+LAYERSERIES_COMPAT_meta-gem5 = "gatesgarth"

meta-gem5/recipes-kernel/linux/linux-yocto_5.4.bbappend

@@ -0,0 +1,11 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}:${THISDIR}/files:"
+
+COMPATIBLE_MACHINE_gem5-arm64 = "gem5-arm64"
+KMACHINE_gem5-arm64 = "gem5-arm64"
+SRC_URI_append_gem5-arm64 = " file://gem5-kmeta;type=kmeta;name=gem5-kmeta;destsuffix=gem5-kmeta \
+                              file://dts/gem5-arm64;subdir=add-files"
+
+do_patch_append_gem5-arm64() {
+    tar -C ${WORKDIR}/add-files/dts -cf - gem5-arm64 | \
+        tar -C arch/arm64/boot/dts -xf -
+}