boards: arm: Add bcm958402m2_a72 board

Add support for bcm958402m2_a72 board for booting zephyr
on Cortex-A72 core.

Signed-off-by: Abhishek Shah <abhishek.shah@broadcom.com>

boards/arm/bcm958402m2_a72/CMakeLists.txt

@@ -0,0 +1 @@
+# SPDX-License-Identifier: Apache-2.0

boards/arm/bcm958402m2_a72/Kconfig.board

@@ -0,0 +1,6 @@
+# Copyright 2020 Broadcom
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_BCM958402M2_A72
+	bool "Broadcom Viper BCM958402M2_A72"
+	depends on SOC_BCM58402_A72

boards/arm/bcm958402m2_a72/Kconfig.defconfig

@@ -0,0 +1,6 @@
+# Copyright 2020 Broadcom
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD
+	default "bcm958402m2_a72"
+	depends on BOARD_BCM958402M2_A72

boards/arm/bcm958402m2_a72/bcm958402m2_a72.dts

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2020 Broadcom
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <broadcom/viper-a72.dtsi>
+/ {
+	model = "Broadcom BCM958402M2_A72";
+	compatible = "brcm,viper";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	chosen {
+		zephyr,console = &uart1;
+		zephyr,shell-uart = &uart1;
+		zephyr,sram = &sram0;
+	};
+};
+
+&uart1 {
+	status = "okay";
+	current-speed = <57600>;
+};

boards/arm/bcm958402m2_a72/bcm958402m2_a72.yaml

@@ -0,0 +1,7 @@
+identifier: bcm958402m2_a72
+name: Broadcom BCM958402M2_A72
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - cross-compile

boards/arm/bcm958402m2_a72/bcm958402m2_a72_defconfig

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: Apache-2.0
+
+# Platform Configuration
+CONFIG_SOC_SERIES_VIPER=y
+CONFIG_SOC_BCM58402_A72=y
+CONFIG_BOARD_BCM958402M2_A72=y
+
+# Zephyr Kernel Configuration
+CONFIG_XIP=n
+CONFIG_FLASH_SIZE=0
+CONFIG_FLASH_BASE_ADDRESS=0x0
+
+# Serial Drivers
+CONFIG_SERIAL=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_UART_NS16550=y
+
+# Enable Console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y

boards/arm/bcm958402m2_a72/board.cmake

@@ -0,0 +1 @@
+# SPDX-License-Identifier: Apache-2.0

boards/arm/bcm958402m2_a72/doc/index.rst

@@ -0,0 +1,51 @@
+.. _bcm958402m2_a72:
+
+Broadcom BCM958402M2 (Cortex-A72)
+#################################
+
+Overview
+********
+The Broadcom bcm958402m2_a72 board utilizes the Viper BCM58402_A72 SoC
+to provide support for PCIe offload engine functionality.
+
+Hardware
+********
+The bcm958402m2_a72 is a PCIe card with the following physical features:
+
+* PCIe Gen4 interface
+* RS232 UART (optionally populated)
+* JTAG (optionally populated)
+
+Supported Features
+==================
+The Broadcom bcm958402m2_a72 board configuration supports the following
+hardware features:
+
++-----------+------------+--------------------------------------+
+| Interface | Controller | Driver/Component                     |
++===========+============+======================================+
+| GIC-500   | on-chip    | GICv3 interrupt controller           |
++-----------+------------+--------------------------------------+
+| UART      | on-chip    | NS16550 compatible serial port       |
++-----------+------------+--------------------------------------+
+
+Other hardware features are not supported by the Zephyr kernel.
+
+The default configuration can be found in the defconfig file:
+
+        ``boards/arm/bcm958402m2_a72/bcm958402m2_a72_defconfig``
+
+Programming and Debugging
+*************************
+
+Flashing
+========
+
+The flash on board is not supported by Zephyr at this time.
+Board is booted over PCIe interface.
+
+Debugging
+=========
+The bcm958402m2_a72 board includes pads for soldering a JTAG connector.
+Zephyr applications running on the Cortex-A72 core can also be tested
+by observing UART console output.

tests/kernel/interrupt/testcase.yaml

@@ -3,3 +3,5 @@ tests:
     # nios2 excluded, see #22956
     arch_exclude: nios2
     tags: interrupt
+    # testcase is not supporting GICv3 yet, disable for bcm958402m2_a72 for now
+    platform_exclude: bcm958402m2_a72