refactor(fvp): fdts: consolidate GICv3 base FVP DT files

The GICv2 and GICv3 version of the FVP DT files are unnecessarily split,
as the common part of the peripherals is the same: it's literally just
the interrupt controller node that is different.
To facilitate a unification, refactor the DT include files to explicitly
include a snippet with just the GICv3 description, and a generic base DT
file for the rest. This generic file can then be reused by the GICv2
versions later.

Since we can only have a /memreserve/ entry *before* any DT nodes, move
that line to each file, to allow including the GIC DT file separately.

Change-Id: I9ff357d3fe0ce46e280c30131aeae97a99631512
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/fdts/fvp-base-gicv3-psci-1t.dts b/fdts/fvp-base-gicv3-psci-1t.dts
index c5e0424..829555b 100644
--- a/fdts/fvp-base-gicv3-psci-1t.dts
+++ b/fdts/fvp-base-gicv3-psci-1t.dts
@@ -6,9 +6,13 @@
 
 /* Configuration: max 4 clusters with up to 4 CPUs with 1 thread per each */
 
-/dts-v1/;
-
 #define	AFF	00
 
 #include "fvp-defs.dtsi"
-#include "fvp-base-gicv3-psci-common.dtsi"
+
+/dts-v1/;
+
+/memreserve/ 0x80000000 0x00010000;
+
+#include "fvp-base-gicv3.dtsi"
+#include "fvp-base-psci-common.dtsi"
diff --git a/fdts/fvp-base-gicv3-psci-dynamiq-2t.dts b/fdts/fvp-base-gicv3-psci-dynamiq-2t.dts
index bda4b8d..9d5b979 100644
--- a/fdts/fvp-base-gicv3-psci-dynamiq-2t.dts
+++ b/fdts/fvp-base-gicv3-psci-dynamiq-2t.dts
@@ -13,6 +13,11 @@
 #define	PE_PER_CPU		2
 #endif
 
+#include "fvp-defs-dynamiq.dtsi"
+
 /dts-v1/;
 
-#include "fvp-base-gicv3-psci-dynamiq-common.dtsi"
+/memreserve/ 0x80000000 0x00010000;
+
+#include "fvp-base-gicv3.dtsi"
+#include "fvp-base-psci-common.dtsi"
diff --git a/fdts/fvp-base-gicv3-psci-dynamiq.dts b/fdts/fvp-base-gicv3-psci-dynamiq.dts
index b693f75..1bf803e 100644
--- a/fdts/fvp-base-gicv3-psci-dynamiq.dts
+++ b/fdts/fvp-base-gicv3-psci-dynamiq.dts
@@ -13,6 +13,11 @@
 #define	PE_PER_CPU		1
 #endif
 
+#include "fvp-defs-dynamiq.dtsi"
+
 /dts-v1/;
 
-#include "fvp-base-gicv3-psci-dynamiq-common.dtsi"
+/memreserve/ 0x80000000 0x00010000;
+
+#include "fvp-base-gicv3.dtsi"
+#include "fvp-base-psci-common.dtsi"
diff --git a/fdts/fvp-base-gicv3-psci.dts b/fdts/fvp-base-gicv3-psci.dts
index eb99472..69db267 100644
--- a/fdts/fvp-base-gicv3-psci.dts
+++ b/fdts/fvp-base-gicv3-psci.dts
@@ -6,9 +6,13 @@
 
 /* Configuration: max 4 clusters with up to 4 CPUs */
 
-/dts-v1/;
-
 #define	AFF
 
 #include "fvp-defs.dtsi"
-#include "fvp-base-gicv3-psci-common.dtsi"
+
+/dts-v1/;
+
+/memreserve/ 0x80000000 0x00010000;
+
+#include "fvp-base-gicv3.dtsi"
+#include "fvp-base-psci-common.dtsi"
diff --git a/fdts/fvp-base-gicv3.dtsi b/fdts/fvp-base-gicv3.dtsi
new file mode 100644
index 0000000..fdcfa92
--- /dev/null
+++ b/fdts/fvp-base-gicv3.dtsi
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2017-2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* GICv3 with ITS configuration  */
+
+/ {
+	gic: interrupt-controller@2f000000 {
+		compatible = "arm,gic-v3";
+		#interrupt-cells = <3>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0x2f000000 0x100000>;
+		interrupt-controller;
+		reg = <0x0 0x2f000000 0 0x10000>,	// GICD
+		      <0x0 0x2f100000 0 0x200000>,	// GICR
+		      <0x0 0x2c000000 0 0x2000>,	// GICC
+		      <0x0 0x2c010000 0 0x2000>,	// GICH
+		      <0x0 0x2c02f000 0 0x2000>;	// GICV
+		interrupts = <1 9 4>;
+
+		its: msi-controller@2f020000 {
+			compatible = "arm,gic-v3-its";
+			msi-controller;
+			#msi-cells = <1>;
+			reg = <0x20000 0x20000>;	// GITS
+		};
+	};
+};
diff --git a/fdts/fvp-base-gicv3-psci-common.dtsi b/fdts/fvp-base-psci-common.dtsi
similarity index 91%
rename from fdts/fvp-base-gicv3-psci-common.dtsi
rename to fdts/fvp-base-psci-common.dtsi
index 805b014..69af15a 100644
--- a/fdts/fvp-base-gicv3-psci-common.dtsi
+++ b/fdts/fvp-base-psci-common.dtsi
@@ -12,14 +12,9 @@
 #define SDEI_NORMAL	0x70
 #define HIGHEST_SEC	0
 
-/memreserve/ 0x80000000 0x00010000;
-
-/ {
-};
-
 / {
 	model = "FVP Base";
-	compatible = "arm,vfp-base", "arm,vexpress";
+	compatible = "arm,fvp-base", "arm,vexpress";
 	interrupt-parent = <&gic>;
 	#address-cells = <2>;
 	#size-cells = <2>;
@@ -143,28 +138,6 @@
 #endif
 	};
 
-	gic: interrupt-controller@2f000000 {
-		compatible = "arm,gic-v3";
-		#interrupt-cells = <3>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges = <0x0 0x0 0x2f000000 0x100000>;
-		interrupt-controller;
-		reg = <0x0 0x2f000000 0 0x10000>,	// GICD
-		      <0x0 0x2f100000 0 0x200000>,	// GICR
-		      <0x0 0x2c000000 0 0x2000>,	// GICC
-		      <0x0 0x2c010000 0 0x2000>,	// GICH
-		      <0x0 0x2c02f000 0 0x2000>;	// GICV
-		interrupts = <1 9 4>;
-
-		its: its@2f020000 {
-			compatible = "arm,gic-v3-its";
-			msi-controller;
-			#msi-cells = <1>;
-			reg = <0x20000 0x20000>;	// GITS
-		};
-	};
-
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <GIC_PPI 13
@@ -200,7 +173,7 @@
 			     <0 63 4>;
 	};
 
-	smb@0,0 {
+	smb@0 {
 		compatible = "simple-bus";
 
 		#address-cells = <2>;