boards: renode: Add virtual Cortex-R8 board

This commit adds a virtual target using the `cortex_r8_virtual` SoC.
It can be used for testing purposes and a starting point to add new R8
platforms.

Signed-off-by: Krzysztof Sychla <ksychla@antmicro.com>
Signed-off-by: Marek Slowinski <mslowinski@antmicro.com>
Signed-off-by: Piotr Zierhoffer <pzierhoffer@antmicro.com>
Signed-off-by: Mateusz Hołenko <mholenko@antmicro.com>

boards/renode/cortex_r8_virtual/Kconfig.cortex_r8_virtual

@@ -0,0 +1,5 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_CORTEX_R8_VIRTUAL
+	select SOC_CORTEX_R8_VIRTUAL

boards/renode/cortex_r8_virtual/board.cmake

@@ -0,0 +1,6 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+# SPDX-License-Identifier: Apache-2.0
+
+set(SUPPORTED_EMU_PLATFORMS renode)
+set(RENODE_SCRIPT ${CMAKE_CURRENT_LIST_DIR}/support/cortex_r8_virtual.resc)
+set(RENODE_UART sysbus.uart0)

boards/renode/cortex_r8_virtual/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: cortex_r8_virtual
+  vendor: renode
+  socs:
+  - name: cortex_r8_virtual

boards/renode/cortex_r8_virtual/cortex_r8_virtual.dts

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2024 Antmicro <www.antmicro.com>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <cortex_r8_virt.dtsi>
+
+/ {
+	model = "Cortex-R8 Virtual target";
+	compatible = "renode,cortex-r8-virtual";
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,console = &uart0;
+		zephyr,shell-uart = &uart0;
+	};
+};
+
+&uart0 {
+	status = "okay";
+	current-speed = <115200>;
+	clock-frequency = <99999901>;
+};

boards/renode/cortex_r8_virtual/cortex_r8_virtual.yaml

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+identifier: cortex_r8_virtual
+name: Cortex R8 Virtual Board
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+ram: 131072
+simulation: renode
+simulation_exec: renode
+testing:
+  ignore_tags:
+    - net
+    - bluetooth
+  renode:
+    uart: sysbus.uart0
+    resc: boards/renode/cortex_r8_virtual/support/cortex_r8_virtual.resc
+supported:
+  - uart

boards/renode/cortex_r8_virtual/cortex_r8_virtual_defconfig

@@ -0,0 +1,22 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_XIP=n
+
+CONFIG_ISR_STACK_SIZE=512
+CONFIG_THREAD_STACK_INFO=y
+
+CONFIG_MAX_DOMAIN_PARTITIONS=24
+
+# Enable UART driver
+CONFIG_SERIAL=y
+
+# Enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# Enable serial port
+CONFIG_UART_XLNX_PS=y
+
+CONFIG_SYS_CLOCK_TICKS_PER_SEC=1000
+CONFIG_ARM_MPU=y

boards/renode/cortex_r8_virtual/doc/index.rst

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+.. _cortex_r8_virtual:
+
+Cortex-R8 Virtual
+#################
+
+Overview
+********
+
+The Cortex-R8 Virtual board is a virtual platform that can be emulated with Renode.
+Edit the :zephyr_file:`boards/renode/cortex_r8_virtual/support/cortex_r8_virtual.repl` file to adapt the platform layout to your needs.
+
+Refer to the `Renode documentation <https://renode.readthedocs.io/en/latest/>`_
+to learn how to obtain Renode for your host.
+
+Programming and debugging
+*************************
+
+Building
+========
+
+Applications for the ``cortex_r8_virtual`` board target can be built
+using the standard build flow (see :ref:`build_an_application`):
+
+.. zephyr-app-commands::
+   :board: cortex_r8_virtual
+   :goals: build
+
+Flashing
+========
+
+Your software will run in simulation and you don't need to "flash" the board in a traditional way,
+but you can use this configuration to run Zephyr applications
+and kernel tests directly in Renode with the use of the ``run`` command.
+
+For example, with the :zephyr:code-sample:`synchronization` sample:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/synchronization
+   :host-os: unix
+   :board: cortex_r8_virtual
+   :goals: run
+
+This will build an image with the synchronization sample app, boot it using
+Renode, and display the following console output:
+
+.. code-block:: console
+
+        *** Booting Zephyr OS build v3.6.0-5689-g2a5c606abfa7 ***
+        thread_a: Hello World from cpu 0 on cortex_r8_virtual!
+        thread_b: Hello World from cpu 0 on cortex_r8_virtual!
+        thread_a: Hello World from cpu 0 on cortex_r8_virtual!
+        thread_b: Hello World from cpu 0 on cortex_r8_virtual!
+
+Exit Renode by pressing :kbd:`CTRL+C`.
+
+Debugging
+=========
+
+Refer to the detailed overview about :ref:`application_debugging`.
+
+Renode can serve as a GDB server. For more information, refer to the
+`Renode documentation about GDB debugging <https://renode.readthedocs.io/en/latest/debugging/gdb.html>`_.

boards/renode/cortex_r8_virtual/support/cortex_r8_virtual.repl

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+cpu: CPU.ARMv7R @ sysbus
+    cpuType: "cortex-r8"
+    genericInterruptController: gic
+    numberOfMPURegions: 24
+    cpuId: 0
+
+scu: Miscellaneous.ArmSnoopControlUnit @ sysbus 0xae000000
+
+gic: IRQControllers.ARM_GenericInterruptController @ {
+        sysbus new Bus.BusMultiRegistration { address: 0xf9001000; size: 0x100; region: "cpuInterface" };
+        sysbus new Bus.BusMultiRegistration { address: 0xf9000000; size: 0x1000; region: "distributor" }
+    }
+    [0,1] -> cpu@[0,1]
+    architectureVersion: IRQControllers.ARM_GenericInterruptControllerVersion.GICv1
+    supportsTwoSecurityStates: false
+
+privateTimer0: Timers.ARM_PrivateTimer @ {
+        sysbus new Bus.BusPointRegistration { address: 0xae000600; cpu: cpu }
+    }
+    -> gic#0@29
+    frequency: 667000000
+
+mem: Memory.MappedMemory @ sysbus 0x0
+    size: 0x8000000
+
+uart0: UART.Cadence_UART @ sysbus 0xff000000
+    -> gic@21
+
+ttc0: Timers.Cadence_TTC @ sysbus 0xff110000
+    [0-2] -> gic@[36-38]
+    frequency: 5000000

boards/renode/cortex_r8_virtual/support/cortex_r8_virtual.resc

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+:name: Cortex-R8-Virtual
+:description: This script is prepared to run Zephyr on a virtual Cortex-R8 board.
+
+$name?="Cortex-R8-Virtual"
+
+using sysbus
+mach create $name
+machine LoadPlatformDescription $ORIGIN/cortex_r8_virtual.repl
+
+
+showAnalyzer uart0
+cpu PerformanceInMips 5
+
+macro reset
+"""
+    sysbus LoadELF $elf
+"""
+runMacro $reset