plat/arm: Introduce corstone700 platform.

This patch adds support for Corstone-700 foundation IP, which integrates
both Cortex-M0+ and Cortex-A(Host) processors in one handy, flexible
subsystem.
This is an example implementation of Corstone-700 IP host firmware.

Cortex-M0+ will take care of boot stages 1 and 2(BL1/BL2) as well as
bringing Host out RESET. Host will start execution directly from BL32 and
then will jump to Linux.

It is an initial port and additional features are expected to be added
later.

Change-Id: I7b5c0278243d574284b777b2408375d007a7736e
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>

1 files changed, 147 insertions, 0 deletions

diff --git a/fdts/corstone700.dts b/fdts/corstone700.dts
new file mode 100644
index 00000000..16cf4122
--- /dev/null
+++ b/fdts/corstone700.dts
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2019, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/dts-v1/;
+
+/ {
+	model = "corstone700";
+	compatible = "arm,Corstone-700";
+	interrupt-parent = <&gic>;
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	chosen {
+		bootargs = "console=ttyAMA0 root=/dev/vda2 rw loglevel=9";
+		linux,initrd-start = <0x02a00000>;
+		linux,initrd-end = <0x04000000>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,armv8";
+			reg = <0>;
+			next-level-cache = <&L2_0>;
+		};
+
+	};
+
+	memory@2000000 {
+		device_type = "memory";
+		reg = <0x02000000 0x02000000>;
+	};
+
+	gic: interrupt-controller@1c000000 {
+		compatible = "arm,gic-400";
+		#interrupt-cells = <3>;
+		#address-cells = <0>;
+		interrupt-controller;
+		reg =	<0x1c010000 0x1000>,
+			<0x1c02f000 0x2000>,
+			<0x1c04f000 0x1000>,
+			<0x1c06f000 0x2000>;
+		interrupts = <1 9 0xf08>;
+	};
+
+	L2_0: l2-cache0 {
+		compatible = "cache";
+	};
+
+	refclk100mhz: refclk100mhz {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+		clock-output-names = "apb_pclk";
+	};
+
+	smbclk: refclk24mhzx2 {
+		/* Reference 24MHz clock x 2 */
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <48000000>;
+		clock-output-names = "smclk";
+	};
+
+
+	serial0: uart@1a510000 {
+		compatible = "arm,pl011", "arm,primecell";
+		reg = <0x1a510000 0x1000>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 19 4>;
+		clocks = <&refclk100mhz>, <&smbclk>;
+		clock-names = "apb_pclk", "smclk";
+	};
+
+	serial1: uart@1a520000 {
+		compatible = "arm,pl011", "arm,primecell";
+		reg = <0x1a520000 0x1000>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 20 4>;
+		clocks = <&refclk100mhz>, <&smbclk>;
+		clock-names = "apb_pclk", "smclk";
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts =	<1 13 0xf08>,
+				<1 14 0xf08>,
+				<1 11 0xf08>,
+				<1 10 0xf08>;
+		};
+
+	mbox_es0mhu0: mhu@1b000000 {
+		compatible = "arm,mhuv2","arm,primecell";
+		reg = <0x1b000000 0x1000>,
+		      <0x1b010000 0x1000>;
+		clocks = <&refclk100mhz>;
+		clock-names = "apb_pclk";
+		interrupts = <0 12 4>;
+		interrupt-names = "mhu_rx";
+		#mbox-cells = <1>;
+		mbox-name = "arm-es0-mhu0";
+	};
+
+	mbox_es0mhu1: mhu@1b020000 {
+		compatible = "arm,mhuv2","arm,primecell";
+		reg = <0x1b020000 0x1000>,
+		      <0x1b030000 0x1000>;
+		clocks = <&refclk100mhz>;
+		clock-names = "apb_pclk";
+		interrupts = <0 47 4>;
+		interrupt-names = "mhu_rx";
+		#mbox-cells = <1>;
+		mbox-name = "arm-es0-mhu1";
+	};
+
+	mbox_semhu1: mhu@1b820000 {
+		compatible = "arm,mhuv2","arm,primecell";
+		reg = <0x1b820000 0x1000>,
+		      <0x1b830000 0x1000>;
+		clocks = <&refclk100mhz>;
+		clock-names = "apb_pclk";
+		interrupts = <0 45 4>;
+		interrupt-names = "mhu_rx";
+		#mbox-cells = <1>;
+		mbox-name = "arm-se-mhu1";
+	};
+
+	client {
+		compatible = "arm,client";
+		mboxes = <&mbox_es0mhu0 0>, <&mbox_es0mhu1 0>, <&mbox_semhu1 0>;
+		mbox-names = "es0mhu0", "es0mhu1", "semhu1";
+	};
+
+	extsys0: extsys@1A010310 {
+		compatible = "arm,extsys_ctrl";
+		reg = <0x1A010310 0x4>,
+		      <0x1A010314 0x4>;
+		reg-names = "rstreg", "streg";
+	};
+
+};