boards: arm64: add support of Renesas Spider S4 A55 board

Add support of 'rcar_spider_s4/r8a779f0/a55' board: minimal dts
and configuration.

Signed-off-by: Mykola Kvach <mykola_kvach@epam.com>

boards/renesas/rcar_spider_s4/Kconfig.defconfig

@@ -0,0 +1,5 @@
+# Copyright (c) 2024 EPAM Systems
+# SPDX-License-Identifier: Apache-2.0
+
+config BUILD_OUTPUT_BIN
+	default y if BOARD_RCAR_SPIDER_S4_R8A779F0_A55

boards/renesas/rcar_spider_s4/Kconfig.rcar_spider_s4

@@ -2,4 +2,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_RCAR_SPIDER_S4
-	select SOC_R8A779F0
+	select SOC_R8A779F0_R52 if BOARD_RCAR_SPIDER_S4_R8A779F0_R52
+	select SOC_R8A779F0_A55 if BOARD_RCAR_SPIDER_S4_R8A779F0_A55

boards/renesas/rcar_spider_s4/board.cmake

@@ -1,3 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
-board_runner_args(openocd "--use-elf")
-include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
+if(CONFIG_BOARD_RCAR_SPIDER_S4_R8A779F0_R52)
+  board_runner_args(openocd "--use-elf")
+  include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
+endif()

boards/renesas/rcar_spider_s4/doc/rcar_spider_a55.rst

@@ -0,0 +1,83 @@
+.. _rcar_spider_a55:
+
+R-CAR Spider S4 (ARM64)
+#######################
+
+Overview
+********
+R-Car S4 enables to launch Car Server/CoGW with high performance, high-speed networking,
+high security and high functional safety levels that are required as E/E architectures
+evolve into domains and zones. The R-Car S4 solution allows designers to re-use up to 88
+percent of software code developed for 3rd generation R-Car SoCs and RH850 MCU applications.
+The software package supports the real-time cores with various drivers and basic software
+such as Linux BSP and hypervisors.
+
+Hardware
+********
+The R-Car S4 includes:
+
+* eight 1.2GHz Arm Cortex-A55 cores, 2 cores x 4 clusters;
+* 1.0 GHz Arm Cortex-R52 core (hardware Lock step is supported);
+* two 400MHz G4MH cores (hardware Lock step is supported);
+* memory controller for LPDDR4X-3200 with 32bit bus (16bit x 1ch + 16bit x 1ch) with ECC;
+* SD card host interface / eMMC;
+* UFS 3.0 x 1 channel;
+* PCI Express Gen4.0 interface (Dual lane x 2ch);
+* ICUMX;
+* ICUMH;
+* SHIP-S x 3 channels;
+* AES Accerator x 8 channels;
+* CAN FD interface x 16 channels;
+* R-Switch2 (Ether);
+* 100base EtherAVB x 1 channel;
+* Gbit-EtherTSN x 3 channels;
+* 1 unit FlexRay (A,B 2ch) interface.
+
+Supported Features
+==================
+The Renesas ``rcar_spider_s4/r8a779f0/a55`` board configuration supports the following
+hardware features:
+
++-----------+------------------------------+--------------------------------+
+| Interface | Driver/components            | Support level                  |
++===========+==============================+================================+
+| PINCTRL   | pinctrl                      |                                |
++-----------+------------------------------+--------------------------------+
+| CLOCK     | clock_control                |                                |
++-----------+------------------------------+--------------------------------+
+| UART      | serial                       | interrupt-driven/polling       |
++-----------+------------------------------+--------------------------------+
+
+Other hardware features have not been enabled yet for this board.
+
+Programming and Debugging
+*************************
+
+The onboard flash is not supported by Zephyr at this time. However, it is possible to
+load the Zephyr binary using U-Boot commands.
+
+One of the ways to load Zephyr is shown below.
+
+.. code-block:: console
+
+   tftp 0x48000000 <tftp_server_path/zephyr.bin>
+   booti 0x48000000
+
+Here is an example for the :ref:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: rcar_spider_s4/r8a779f0/a55
+   :goals: build
+
+References
+**********
+
+- `Renesas R-Car Development Support website`_
+- `eLinux Spider page`_
+
+.. _Renesas R-Car Development Support website:
+   https://www.renesas.com/us/en/support/partners/r-car-consortium/r-car-development-support
+
+.. _eLinux Spider page:
+   https://elinux.org/R-Car/Boards/Spider

boards/renesas/rcar_spider_s4/doc/rcar_spider_r52.rst

@@ -141,12 +141,12 @@ Flashing
 
 First of all, open your serial terminal.
 
-Applications for the ``rcar_spider_s4`` board configuration can be built in the
+Applications for the ``rcar_spider_s4/r8a779f0/r52`` board configuration can be built in the
 usual way (see :ref:`build_an_application` for more details).
 
 .. zephyr-app-commands::
    :zephyr-app: samples/hello_world
-   :board: rcar_spider_s4
+   :board: rcar_spider_s4/r8a779f0/r52
    :goals: flash
 
 You should see the following message in the terminal:
@@ -165,7 +165,7 @@ Here is an example for the :ref:`hello_world` application.
 
 .. zephyr-app-commands::
    :zephyr-app: samples/hello_world
-   :board: rcar_spider_s4
+   :board: rcar_spider_s4/r8a779f0/r52
    :goals: debug
 
 You will then get access to a GDB session for debugging.

boards/renesas/rcar_spider_s4/rcar_spider_s4_r8a779f0_a55-pinctrl.dtsi

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2023 EPAM Systems
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/pinctrl/renesas/pinctrl-r8a779f0.h>
+
+&pfc {
+	hscif0_data_tx_default: hscif0_data_tx_default {
+		pin = <PIN_HTX0 FUNC_HTX0>;
+	};
+
+	hscif0_data_rx_default: hscif0_data_rx_default {
+		pin = <PIN_HRX0 FUNC_HRX0>;
+	};
+};

boards/renesas/rcar_spider_s4/rcar_spider_s4_r8a779f0_a55.dts

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2023-2024 EPAM Systems
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ */
+
+/dts-v1/;
+#include <mem.h>
+#include <arm64/renesas/r8a779f0.dtsi>
+#include "rcar_spider_s4_r8a779f0_a55-pinctrl.dtsi"
+
+/ {
+	model = "Renesas Spider CA55";
+	chosen {
+		zephyr,sram = &ram;
+		zephyr,console = &hscif0;
+		zephyr,shell-uart = &hscif0;
+	};
+
+	ram: memory@48000000 {
+		device_type = "mmio-sram";
+		reg = <0x0 0x48000000 0x0 DT_SIZE_M(512)>;
+	};
+};
+
+&hscif0 {
+	pinctrl-0 = <&hscif0_data_tx_default &hscif0_data_rx_default>;
+	pinctrl-names = "default";
+	current-speed = <1843200>;
+	status = "okay";
+};

boards/renesas/rcar_spider_s4/rcar_spider_s4_r8a779f0_a55.yaml

@@ -0,0 +1,12 @@
+identifier: rcar_spider_s4/r8a779f0/a55
+name: Cortex A55 for Renesas Spider
+type: mcu
+arch: arm64
+toolchain:
+  - zephyr
+  - cross-compile
+supported:
+  - pinctrl
+  - gpio
+  - clock_control
+  - uart

boards/renesas/rcar_spider_s4/rcar_spider_s4_r8a779f0_a55_defconfig

@@ -0,0 +1,19 @@
+# Cache management
+CONFIG_CACHE_MANAGEMENT=y
+
+# Enable UART driver
+CONFIG_SERIAL=y
+
+# Enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+
+# Enable clock control
+CONFIG_CLOCK_CONTROL=y
+CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=16666666
+
+CONFIG_AARCH64_IMAGE_HEADER=y
+CONFIG_XIP=n
+CONFIG_MAX_XLAT_TABLES=24
+CONFIG_ARMV8_A_NS=y

boards/renesas/rcar_spider_s4/rcar_spider_s4_r8a779f0_r52.dts

@@ -7,12 +7,12 @@
 
 /dts-v1/;
 #include <arm/renesas/rcar/gen4/r8a779f0.dtsi>
-#include "rcar_spider_s4-pinctrl.dtsi"
+#include "rcar_spider_s4_r8a779f0_r52-pinctrl.dtsi"
 #include <zephyr/dt-bindings/input/input-event-codes.h>
 
 / {
 	model = "Renesas Spider board";
-	compatible = "renesas,spider-s4";
+	compatible = "renesas,spider-s4-cr52";
 
 	chosen {
 		zephyr,sram = &sram0;

boards/renesas/rcar_spider_s4/rcar_spider_s4_r8a779f0_r52.yaml

@@ -1,4 +1,4 @@
-identifier: rcar_spider_s4
+identifier: rcar_spider_s4/r8a779f0/r52
 name: Cortex r52 for Renesas Spider
 type: mcu
 arch: arm