Added port for the OpenHW CORE-V MCU platform

cmake/riscv64-gcc-rv32imc.cmake

@@ -0,0 +1,64 @@
+# /***************************************************************************
+#  * Copyright (C) 2026 Eclipse ThreadX contributors
+#  *
+#  * This program and the accompanying materials are made available under the
+#  * terms of the MIT License which is available at
+#  * https://opensource.org/licenses/MIT.
+#  *
+#  * AI Disclosure: This file was largely AI-generated by Copilot (Sonnet 4.6).
+#  * The AI-generated portions may be considered public domain (CC0-1.0)
+#  * and not subject to the project's licence. The human contributor has
+#  * reviewed and verified that the code is correct.
+#  *
+#  * SPDX-License-Identifier: MIT and CC0-1.0
+#  ***************************************************************************/
+
+# CMake toolchain file for CORE-V MCU (CV32E40P, RV32IMC)
+#
+# Uses the riscv64-unknown-elf-gcc multi-lib toolchain (Ubuntu package
+# gcc-riscv64-unknown-elf) to cross-compile for a 32-bit RISC-V target.
+#
+# Target ISA : rv32imc_zicsr  (integer, multiply, compressed, Zicsr)
+# ABI        : ilp32           (32-bit int/long/ptr, no hardware FP)
+# Code model : medlow          (addresses in [0, 2 GiB))
+
+set(CMAKE_SYSTEM_NAME Generic)
+set(CMAKE_SYSTEM_PROCESSOR riscv)
+
+set(THREADX_ARCH "risc-v32")
+set(THREADX_TOOLCHAIN "gnu")
+
+set(ARCH_FLAGS "-march=rv32imc_zicsr -mabi=ilp32 -mcmodel=medlow")
+set(CFLAGS   "${ARCH_FLAGS}")
+set(ASFLAGS  "${ARCH_FLAGS}")
+set(LDFLAGS  "${ARCH_FLAGS}")
+
+# Toolchain binaries (riscv64-unknown-elf can target rv32 via multilib)
+set(CMAKE_C_COMPILER    riscv64-unknown-elf-gcc)
+set(CMAKE_CXX_COMPILER  riscv64-unknown-elf-g++)
+set(AS                  riscv64-unknown-elf-as)
+set(AR                  riscv64-unknown-elf-ar)
+set(OBJCOPY             riscv64-unknown-elf-objcopy)
+set(OBJDUMP             riscv64-unknown-elf-objdump)
+set(SIZE                riscv64-unknown-elf-size)
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+
+# Use static library for compiler feature probing (no linker script yet)
+set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
+
+set(CMAKE_C_FLAGS   "${CFLAGS}"  CACHE INTERNAL "c compiler flags")
+set(CMAKE_CXX_FLAGS "${CFLAGS}"  CACHE INTERNAL "cxx compiler flags")
+set(CMAKE_ASM_FLAGS "${ASFLAGS} -D__ASSEMBLER__" CACHE INTERNAL "asm compiler flags")
+set(CMAKE_EXE_LINKER_FLAGS "${LDFLAGS}" CACHE INTERNAL "exe link flags")
+
+set(CMAKE_C_FLAGS_DEBUG   "-Og -g -ggdb3" CACHE INTERNAL "c debug flags")
+set(CMAKE_CXX_FLAGS_DEBUG "-Og -g -ggdb3" CACHE INTERNAL "cxx debug flags")
+set(CMAKE_ASM_FLAGS_DEBUG "-g -ggdb3"     CACHE INTERNAL "asm debug flags")
+
+set(CMAKE_C_FLAGS_RELEASE   "-Os" CACHE INTERNAL "c release flags")
+set(CMAKE_CXX_FLAGS_RELEASE "-Os" CACHE INTERNAL "cxx release flags")
+set(CMAKE_ASM_FLAGS_RELEASE ""    CACHE INTERNAL "asm release flags")

ports/risc-v32/gnu/example_build/core_v_mcu/CMakeLists.txt

@@ -0,0 +1,65 @@
+cmake_minimum_required(VERSION 3.15 FATAL_ERROR)
+
+project(demo_threadx_core_v_mcu LANGUAGES C ASM)
+set(CMAKE_C_STANDARD 99)
+set(CMAKE_C_STANDARD_REQUIRED ON)
+
+set(CORE_V_MCU_DIR ${CMAKE_CURRENT_LIST_DIR})
+set(THREADX_ROOT   ${CMAKE_CURRENT_LIST_DIR}/../../../../..)
+set(TX_USER_FILE   ${CORE_V_MCU_DIR}/include/tx_user.h)
+
+set(THREADX_ARCH "risc-v32")
+set(THREADX_TOOLCHAIN "gnu")
+add_subdirectory(${THREADX_ROOT} threadx)
+target_include_directories(threadx PRIVATE ${CORE_V_MCU_DIR}/include)
+
+set(SRCS
+    ${CORE_V_MCU_DIR}/crt0.S
+    ${CORE_V_MCU_DIR}/vectors.S
+    ${CORE_V_MCU_DIR}/tx_initialize_low_level.S
+    ${CORE_V_MCU_DIR}/bsp/irq.c
+    ${CORE_V_MCU_DIR}/bsp/timer_irq.c
+    ${CORE_V_MCU_DIR}/bsp/fll.c
+    ${CORE_V_MCU_DIR}/bsp/gpio.c
+    ${CORE_V_MCU_DIR}/bsp/uart_driver.c
+    ${CORE_V_MCU_DIR}/bsp/i2c_master.c
+    ${CORE_V_MCU_DIR}/bsp/temp_sensor.c
+    ${CORE_V_MCU_DIR}/bsp/system_core_v_mcu.c
+    ${CORE_V_MCU_DIR}/bsp/string.c
+    ${CORE_V_MCU_DIR}/demo_threadx.c
+)
+
+add_executable(demo_threadx ${SRCS})
+set_target_properties(demo_threadx PROPERTIES OUTPUT_NAME "demo_threadx.elf")
+
+target_include_directories(demo_threadx PRIVATE
+    ${CORE_V_MCU_DIR}/include
+    ${THREADX_ROOT}/common/inc
+    ${THREADX_ROOT}/ports/risc-v32/gnu/inc
+)
+
+target_link_libraries(demo_threadx PRIVATE threadx gcc)
+
+target_link_options(demo_threadx PRIVATE
+    -T${CORE_V_MCU_DIR}/link.ld
+    -nostartfiles
+    -nodefaultlibs
+    -Wl,--gc-sections
+    -Wl,-Map=${CMAKE_CURRENT_BINARY_DIR}/demo_threadx.map
+)
+
+target_compile_options(demo_threadx PRIVATE
+    -Os
+    -g
+    -Wall
+    -Wextra
+    -ffreestanding
+    -ffunction-sections
+    -fdata-sections
+    -DTX_INCLUDE_USER_DEFINE_FILE
+)
+
+add_custom_command(TARGET demo_threadx POST_BUILD
+    COMMAND ${OBJCOPY} -O binary $<TARGET_FILE:demo_threadx> ${CMAKE_CURRENT_BINARY_DIR}/demo_threadx.bin
+    COMMENT "Generating demo_threadx.bin"
+)