boards: renesas: Add support for Renesas RZ/V2H-EVK R8 core

Add support for Renesas RZ/V2H-EVK R8 core

Signed-off-by: Tien Nguyen <tien.nguyen.zg@renesas.com>

boards/renesas/rzv2h_evk/Kconfig.rzv2h_evk

@@ -3,3 +3,4 @@
 
 config BOARD_RZV2H_EVK
 	select SOC_R9A09G057H44GBG_CM33 if BOARD_RZV2H_EVK_R9A09G057H44GBG_CM33
+	select SOC_R9A09G057H44GBG_CR8 if BOARD_RZV2H_EVK_R9A09G057H44GBG_CR8_0

boards/renesas/rzv2h_evk/board.cmake

@@ -5,4 +5,8 @@ if(CONFIG_BOARD_RZV2H_EVK_R9A09G057H44GBG_CM33)
   board_runner_args(jlink "--device=R9A09G057H44_M33_0")
 endif()
 
+if (CONFIG_BOARD_RZV2H_EVK_R9A09G057H44GBG_CR8_0)
+  board_runner_args(jlink "--device=R9A09G057H44_R8_0")
+endif()
+
 include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

boards/renesas/rzv2h_evk/doc/index.rst

@@ -74,8 +74,8 @@ LED
 * LED5 (yelow) = P0_0
 * LED6 (yelow) = P0_1
 
-Programming and Debugging (M33)
-*******************************
+Programming and Debugging (M33/R8)
+**********************************
 
 .. zephyr:board-supported-runners::
 
@@ -85,29 +85,38 @@ documented in :ref:`build_an_application`.
 Console
 =======
 
-The UART port for Cortex-M33 System Core can be accessed by connecting `Pmod USBUART <https://store.digilentinc.com/pmod-usbuart-usb-to-uart-interface/>`_
+The UART port for Cortex-M33/Cortex-R8 System Core can be accessed by connecting `Pmod USBUART <https://store.digilentinc.com/pmod-usbuart-usb-to-uart-interface/>`_
 to the upper side of ``PMOD Type 3A``.
 
 Debugging
 =========
 
 It is possible to load and execute a Zephyr application binary on
-this board on the Cortex-M33 System Core from
+this board on the Cortex-M33/Cortex-R8 System Core from
 the internal SRAM, using ``JLink`` debugger (:ref:`jlink-debug-host-tools`).
 
 Here is an example for building and debugging with the :zephyr:code-sample:`hello_world` application.
 
+**CM33:**
+
 .. zephyr-app-commands::
    :zephyr-app: samples/hello_world
    :board: rzv2h_evk/r9a09g057h44gbg/cm33
    :goals: build debug
 
+**CR8:**
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: rzv2h_evk/r9a09g057h44gbg/cr8_0
+   :goals: build debug
+
 Flashing
 ========
 
 RZ/V2H-EVK is designed to start different systems on different cores.
 It uses Yocto as the build system to build Linux system and boot loaders
-to run Zephyr on Cortex-M33 with u-boot. The minimal steps are described below.
+to run Zephyr on Cortex-M33/Cortex-R8 with u-boot. The minimal steps are described below.
 
 1. Download Multi-OS Package from the `RZ/V2H Easy Download Guide`_
 
@@ -172,7 +181,9 @@ The below necessary artifacts will be located in the build/tmp/deploy/image
 
 8. Hit any key within 3 sec to stop autoboot.
 
-9. Carry out the following setup of u-boot to kick CM33 Core.
+9. Carry out the following setup of u-boot to kick CM33/CR8 Core.
+
+**CM33:**
 
 .. code-block:: console
 
@@ -191,6 +202,27 @@ The below necessary artifacts will be located in the build/tmp/deploy/image
    => saveenv
    => run cm33start
 
+**CR8:**
+
+.. code-block:: console
+
+   => setenv cr8start 'dcache off
+   => mw.l 0x10420D24 0x04000000
+   => mw.l 0x10420600 0xE000E000
+   => mw.l 0x10420604 0x00030003
+   => mw.l 0x10420908 0x1FFF0000
+   => mw.l 0x10420C44 0x003F0000
+   => mw.l 0x10420C14 0x00000000
+   => mw.l 0x10420908 0x10001000
+   => mw.l 0x10420C48 0x00000020
+   => mw.l 0x10420908 0x1FFF1FFF
+   => mw.l 0x10420C48 0x00000000
+   => ext4load mmc 0:2 0x12040000 boot/zephyr.bin
+   => mw.l 0x10420C14 0x00000003
+   => dcache on'
+   => saveenv
+   => run cr8start
+
 References
 **********
 

boards/renesas/rzv2h_evk/rzv2h_evk_r9a09g057h44gbg_cr8_0.dts

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2025 Renesas Electronics Corporation
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <zephyr/dt-bindings/memory-attr/memory-attr-arm.h>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+#include <arm/renesas/rz/rzv/r9a09g057_cr8.dtsi>
+#include "rzv2h_evk-pinctrl.dtsi"
+
+/ {
+	model = "Renesas RZ/V2H EVK";
+	compatible = "renesas,rzv2h-evk";
+
+	aliases {
+		led0 = &led5;
+		led1 = &led6;
+	};
+
+	chosen {
+		zephyr,sram = &sram;
+		zephyr,console = &uart0;
+		zephyr,shell-uart = &uart0;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led5: led5 {
+			gpios = <&gpio0 0 0>;
+			label = "led5";
+		};
+
+		led6: led6 {
+			gpios = <&gpio0 1 0>;
+			label = "led6";
+		};
+	};
+
+	sram: memory@0 {
+		compatible = "mmio-sram";
+		reg = <0x0 DT_SIZE_M(256)>;
+	};
+};
+
+&gpio {
+	status = "okay";
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&sci0 {
+	pinctrl-0 = <&sci0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	uart0: uart {
+		current-speed = <115200>;
+		status = "okay";
+	};
+};

boards/renesas/rzv2h_evk/rzv2h_evk_r9a09g057h44gbg_cr8_0.yaml

@@ -0,0 +1,11 @@
+identifier: rzv2h_evk/r9a09g057h44gbg/cr8_0
+name: Cortex-R8 for Renesas RZ/V2H EVK
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gnuarmemb
+supported:
+  - uart
+  - gpio
+vendor: renesas

boards/renesas/rzv2h_evk/rzv2h_evk_r9a09g057h44gbg_cr8_0_defconfig

@@ -0,0 +1,19 @@
+# Copyright (c) 2025 Renesas Electronics Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_XIP=n
+
+# MPU Config
+CONFIG_ARM_MPU=y
+
+# Enable UART driver
+CONFIG_SERIAL=y
+
+# Enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# Cache Options
+CONFIG_CACHE_MANAGEMENT=y
+CONFIG_DCACHE_LINE_SIZE_DETECT=y
+CONFIG_ICACHE_LINE_SIZE_DETECT=y