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cmake_minimum_required(VERSION 3.20)
project(richard_cpu
VERSION 0.1.0
DESCRIPTION "RV64IMAZicsr_Zifencei Five-Stage Pipelined CPU SoC"
LANGUAGES CXX C
)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
# ─── Options ────────────────────────────────────────────────────────────────────
option(ENABLE_TRACE "Enable VCD waveform tracing" ON)
option(ENABLE_COVERAGE "Enable code coverage for RTL" OFF)
option(BUILD_SW "Build software targets (requires riscv64 toolchain)" OFF)
# ─── Locate Verilator ────────────────────────────────────────────────────────────
find_package(verilator REQUIRED HINTS $ENV{VERILATOR_ROOT})
message(STATUS "Found Verilator: ${verilator_DIR}")
# ─── RTL Source Directories ──────────────────────────────────────────────────────
set(RTL_DIR ${CMAKE_SOURCE_DIR}/rtl)
set(RTL_CORE_DIR ${RTL_DIR}/core)
set(RTL_CACHE_DIR ${RTL_DIR}/cache)
set(RTL_BUS_DIR ${RTL_DIR}/bus)
set(RTL_PERIPS_DIR ${RTL_DIR}/perips)
set(RTL_SOC_DIR ${RTL_DIR}/soc)
set(RTL_INCLUDE_DIR ${RTL_CORE_DIR}/include)
# ─── Common Verilator Flags ──────────────────────────────────────────────────────
set(VERILATOR_COMMON_FLAGS
--sv
-Wall
-Wno-DECLFILENAME
-Wno-UNUSED
--x-initial unique
--x-assign unique
)
if(ENABLE_TRACE)
list(APPEND VERILATOR_COMMON_FLAGS --trace)
add_compile_definitions(VM_TRACE=1)
endif()
if(ENABLE_COVERAGE)
list(APPEND VERILATOR_COMMON_FLAGS --coverage)
endif()
# ─── Include Verilator CMake Helper ──────────────────────────────────────────────
include(${CMAKE_SOURCE_DIR}/tools/verilator.cmake)
# ─── Waveform Output Directory ──────────────────────────────────────────────────
file(MAKE_DIRECTORY ${CMAKE_SOURCE_DIR}/waves)
# ─── Testing ────────────────────────────────────────────────────────────────────
enable_testing()
# ─── Testbench Subdirectory ─────────────────────────────────────────────────────
add_subdirectory(tb)
# ─── Software Subdirectory (optional) ───────────────────────────────────────────
if(BUILD_SW)
add_subdirectory(sw)
endif()
# ─── Summary ────────────────────────────────────────────────────────────────────
message(STATUS "")
message(STATUS "╔══════════════════════════════════════════════╗")
message(STATUS "║ richard-cpu build configuration ║")
message(STATUS "╠══════════════════════════════════════════════╣")
message(STATUS "║ Trace: ${ENABLE_TRACE}")
message(STATUS "║ Coverage: ${ENABLE_COVERAGE}")
message(STATUS "║ Software: ${BUILD_SW}")
message(STATUS "╚══════════════════════════════════════════════╝")
message(STATUS "")
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