build: move to cmake

npc/.envrc

@@ -0,0 +1 @@
+use flake

npc/.gitignore

@@ -1,12 +1,17 @@
-*.*
-*
-!*/
-!Makefile
-!*.mk
-!*.[cSh]
-!*.v
-!*.cc
-!*.cpp
-!.gitignore
-!README.md
 build/
+**/project/
+**/target/
+
+*.class
+*.log
+.cache/
+**/.bsp/
+.bloop/
+.metals/
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+.vscode/
+.direnv/
+compile_commands.json

npc/.scalafmt.conf

@@ -0,0 +1,2 @@
+version = "3.7.15"
+runner.dialect = scala213

npc/CMakeLists.txt

@@ -0,0 +1,72 @@
+cmake_minimum_required(VERSION 3.20)
+
+project(npc)
+set (CMAKE_CXX_STANDARD 11)
+cmake_policy(SET CMP0144 NEW)
+
+find_package(SDL2 REQUIRED)
+find_package(SDL2_image REQUIRED)
+
+find_package(verilator REQUIRED)
+
+find_library(NVBOARD_LIBRARY NAMES nvboard)
+find_path(NVBOARD_INCLUDE_DIR NAMES nvboard.h)
+
+set(TOPMODULE "Switch")
+set(SCALA_CORE "${CMAKE_CURRENT_SOURCE_DIR}/core")
+set(CHISEL_MODULE_CLASS "${CMAKE_PROJECT_NAME}.${TOPMODULE}")
+file(GLOB_RECURSE SCALA_CORE_SOURCES "${SCALA_CORE}/src/main/scala/*.scala")
+file(GLOB_RECURSE SCALA_CORE_TEST_SOURCES "${SCALA_CORE}/src/test/scala/*.scala")
+
+# Configure time verilog source generation for verilator
+execute_process(
+  COMMAND sbt "runMain circt.stage.ChiselMain --target-dir ${CMAKE_CURRENT_BINARY_DIR}/vsrc --module ${CHISEL_MODULE_CLASS} --target verilog"
+  WORKING_DIRECTORY ${SCALA_CORE}
+)
+
+add_custom_command(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/vsrc/${TOPMODULE}.v
+  COMMAND sbt "runMain circt.stage.ChiselMain --target-dir ${CMAKE_CURRENT_BINARY_DIR}/vsrc --module ${CHISEL_MODULE_CLASS} --target verilog"
+  WORKING_DIRECTORY ${SCALA_CORE}
+  DEPENDS ${SCALA_CORE_SOURCES}
+)
+
+add_custom_target(
+    ChiselBuild
+    DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/vsrc/${TOPMODULE}.v
+)
+
+# -- Build NVBoard executable
+
+add_custom_command(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/auto_bind.cpp
+  COMMAND auto_pin_bind ${CMAKE_SOURCE_DIR}/constr/${TOPMODULE}.nxdc ${CMAKE_CURRENT_BINARY_DIR}/auto_bind.cpp
+  DEPENDS ${CMAKE_SOURCE_DIR}/constr/${TOPMODULE}.nxdc 
+)
+
+add_executable(V${TOPMODULE}_nvboard csrc_nvboard/main.cpp auto_bind.cpp)
+
+verilate(V${TOPMODULE}_nvboard TRACE COVERAGE THREADS
+  TOP_MODULE ${TOPMODULE}
+  PREFIX V${TOPMODULE}
+  SOURCES ${CMAKE_CURRENT_BINARY_DIR}/vsrc/${TOPMODULE}.v)
+
+add_dependencies(V${TOPMODULE}_nvboard ChiselBuild)
+target_include_directories(V${TOPMODULE}_nvboard PRIVATE ${NVBOARD_INCLUDE_DIR} ${SDL2_INCLUDE_DIRS})
+target_link_libraries(V${TOPMODULE}_nvboard PRIVATE ${NVBOARD_LIBRARY} SDL2::SDL2 SDL2_image::SDL2_image)
+
+install(TARGETS V${TOPMODULE}_nvboard)
+
+# -- Build Verilator executable and add to test
+
+add_executable(V${TOPMODULE} csrc/main.cpp)
+
+verilate(V${TOPMODULE} TRACE COVERAGE THREADS
+  TOP_MODULE ${TOPMODULE}
+  PREFIX V${TOPMODULE}
+  SOURCES ${CMAKE_CURRENT_BINARY_DIR}/vsrc/${TOPMODULE}.v)
+
+add_dependencies(V${TOPMODULE} ChiselBuild)
+
+enable_testing()
+add_test(NAME V${TOPMODULE} COMMAND V${TOPMODULE})

npc/Makefile

@@ -1,28 +1,56 @@
 NVBOARD_HOME ?= $(abspath ../nvboard)
 PREFIX ?= build
-OBJDIR := $(PREFIX)/obj
+CHISEL_VDIR := $(PREFIX)/chisel
-TARGET := $(OBJDIR)/Vexample
 
-VSRC := $(wildcard vsrc/*.v)
 CPPSRCS := $(addprefix $(PWD)/,$(wildcard csrc/*.cpp))
-SUBMAKE := $(OBJDIR)/Vexample.mk
 
 VERILATOR_FLAGS := --cc --exe
 LDFLAGS += $(shell sdl2-config --libs) -lSDL2_image
 
+CHISEL_TOP_PACKAGE := learning
+CHISEL_TOP_MODULE := Main
+CHISEL_TARGET := verilog
+
+SUBDIRS := obj nvobj
+SUBDIRS := $(addprefix $(PREFIX),$(SUBDIRS))
+
+SUBMAKE := $(OBJDIR)/V$(CHISEL_TOP_MODULE).mk
+
+# Pretty printing
+MAKEFLAGS += --no-print-directory
+GREEN := \e[32m
+NC := \e[0m
+define colorize
+	printf '$(GREEN)'$(1)'$(NC) $(2)\n'
+endef
+
 all: sim-bin nvboard-bin
 
-$(OBJDIR)/Vexample: $(SUBMAKE)
+$(SUBDIRS):%: %/V$(CHISEL_TOP_MODULE).mk
-	$(MAKE) -C $(OBJDIR) -f $(notdir $(SUBMAKE)) Vexample
+	verilator $(VERILATOR_FLAGS) $(addprefix -CFLAGS , $(CXXFLAGS)) $(addprefix -LDFLAGS , $(LDFLAGS)) --Mdir $(abspath $(OBJDIR)) $(CHISEL_VSRC) $(CPPSRCS)
 	
-$(SUBMAKE): $(VSRC) $(CPPSRCS) $(OBJDIR)
+$(OBJDIR)/V$(CHISEL_TOP_MODULE): $(SUBMAKE)
-	verilator $(VERILATOR_FLAGS) $(addprefix -CFLAGS , $(CXXFLAGS)) $(addprefix -LDFLAGS , $(LDFLAGS)) --Mdir $(abspath $(OBJDIR)) $(VSRC) $(CPPSRCS)
+	@$(call colorize,"SUBMAKE",$^)
+	$(MAKE) -s -C $(dir $@) -f $< $(notdir $@)
+
+$(SUBMAKE): $(CPPSRCS) $(OBJDIR) chisel-src
+	@$(call colorize,"VERILATOR",$@)
+	verilator $(VERILATOR_FLAGS) $(addprefix -CFLAGS , $(CXXFLAGS)) $(addprefix -LDFLAGS , $(LDFLAGS)) --Mdir $(abspath $(OBJDIR)) $(CHISEL_VSRC) $(CPPSRCS)
 
 $(OBJDIR):
-	mkdir -p $(OBJDIR)
+	mkdir -p $@
 
-sim-bin: VERILATOR_FLAGS += --trace 
+$(CHISEL_VDIR)/filelist.f: $(wildcard src/main/scala/*.scala)
-sim-bin: $(VSRC) $(CPPSRCS) $(OBJDIR)/Vexample
+	@$(call colorize,"CIRCT",$^)
+	sbt --error "runMain circt.stage.ChiselMain --module $(CHISEL_TOP_PACKAGE).$(CHISEL_TOP_MODULE) --split-verilog --target $(CHISEL_TARGET) -td $(CHISEL_VDIR)"
+
+compile_commands.json: clean
+	$(MAKE) $(CHISEL_VDIR)/filelist.f
+	$(RM) compile_commands.json
+	bear --append -- $(MAKE) nvboard-bin
+	bear --append -- $(MAKE) sim-bin
+
+.PHONY: clean nvboard sim nvboard-bin sim-bin git_trace_sim git_trace_nvboard
 
 SRC_AUTO_BIND := $(abspath $(PREFIX)/auto_bind.cpp)
 NXDC_FILES := $(abspath constr/top.nxdc)
@@ -30,13 +58,19 @@ $(SRC_AUTO_BIND): $(NXDC_FILES)
 	NVBOARD_HOME=$(NVBOARD_HOME) python3 $(NVBOARD_HOME)/scripts/auto_pin_bind.py $< $@
 
 nvboard-bin: OBJDIR := $(PREFIX)/nvobj
-nvboard-bin: SUBMAKE := $(OBJDIR)/Vexample.mk
+nvboard-bin: SUBMAKE := $(OBJDIR)/V$(CHISEL_TOP_MODULE).mk
 # TODO: fix this awkward way to find nvboard.a
 nvboard-bin: CPPSRCS := $(addprefix $(PWD)/,$(wildcard csrc_nvboard/*.cpp)) $(SRC_AUTO_BIND) $(NVBOARD_HOME)/build/nvboard.a
-nvboard-bin: CXXFLAGS += -I$(NVBOARD_HOME)/include $(shell sdl2-config --cflags) -g
+nvboard-bin: CXXFLAGS += -I$(NVBOARD_HOME)/include $(shell sdl2-config --cflags)
+nvboard-bin: $(CPPSRCS) $(SUBMAKE) $(SRC_AUTO_BIND) $(OBJDIR)/V$(CHISEL_TOP_MODULE)
+	@echo $(SUBMAKE) $(OBJDIR)
 
-nvboard-bin: $(VSRC) $(CPPSRCS) $(SUBMAKE) $(SRC_AUTO_BIND) $(OBJDIR)/Vexample 
+sim-bin: VERILATOR_FLAGS += --trace 
+sim-bin: $(CPPSRCS) $(OBJDIR)/V$(CHISEL_TOP_MODULE)
 
+chisel-src: $(CHISEL_VDIR)/filelist.f
+	$(eval CHISEL_VSRC := $(wildcard $(CHISEL_VDIR)/*.sv))
+	@echo "GENERATED: $(CHISEL_VSRC)"
 
 ifneq (,$(wildcard ../Makefile))
 include ../Makefile
@@ -51,21 +85,18 @@ git_trace_sim:
 git_trace_nvboard: 
 	$(call git_commit, "nvboard")
 
-.PHONY: clean nvboard sim compile_commands.json 
+nvboard: OBJDIR := $(PREFIX)/nvobj
-
 nvboard: nvboard-bin git_trace_nvboard
-	@NVBOARD_HOME=$(NVBOARD_HOME) $(OBJDIR)/Vexample
+	@echo "Running NVBoard ..."
+	@echo "================================"
+	@NVBOARD_HOME=$(NVBOARD_HOME) $(OBJDIR)/V$(CHISEL_TOP_MODULE)
 
 sim: sim-bin git_trace_sim
-	@echo "Running" $(OBJDIR)/Vexample "..."
+	@echo "Running verilator sim ..."
 	@echo "================================"
-	@$(OBJDIR)/Vexample
+	@$(OBJDIR)/V$(CHISEL_TOP_MODULE)
-
-compile_commands.json: clean
-	bear --output nvboard.json -- $(MAKE) nvboard-bin
-	bear --output all.json -- $(MAKE) sim-bin
-	jq -s ".[0] + .[1]"  all.json nvboard.json > compile_commands.json
-	$(RM) all.json nvboard.json
 
 clean: 
 	$(RM) -r $(PREFIX)
+
+$(V).SILENT:

npc/core/Makefile

@@ -0,0 +1,622 @@
+# CMAKE generated file: DO NOT EDIT!
+# Generated by "Unix Makefiles" Generator, CMake Version 3.27
+
+# Default target executed when no arguments are given to make.
+default_target: all
+.PHONY : default_target
+
+# Allow only one "make -f Makefile2" at a time, but pass parallelism.
+.NOTPARALLEL:
+
+#=============================================================================
+# Special targets provided by cmake.
+
+# Disable implicit rules so canonical targets will work.
+.SUFFIXES:
+
+# Disable VCS-based implicit rules.
+% : %,v
+
+# Disable VCS-based implicit rules.
+% : RCS/%
+
+# Disable VCS-based implicit rules.
+% : RCS/%,v
+
+# Disable VCS-based implicit rules.
+% : SCCS/s.%
+
+# Disable VCS-based implicit rules.
+% : s.%
+
+.SUFFIXES: .hpux_make_needs_suffix_list
+
+# Command-line flag to silence nested $(MAKE).
+$(VERBOSE)MAKESILENT = -s
+
+#Suppress display of executed commands.
+$(VERBOSE).SILENT:
+
+# A target that is always out of date.
+cmake_force:
+.PHONY : cmake_force
+
+#=============================================================================
+# Set environment variables for the build.
+
+# The shell in which to execute make rules.
+SHELL = /bin/sh
+
+# The CMake executable.
+CMAKE_COMMAND = /nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake
+
+# The command to remove a file.
+RM = /nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -E rm -f
+
+# Escaping for special characters.
+EQUALS = =
+
+# The top-level source directory on which CMake was run.
+CMAKE_SOURCE_DIR = /home/xin/repo/ysyx-workbench/npc
+
+# The top-level build directory on which CMake was run.
+CMAKE_BINARY_DIR = /home/xin/repo/ysyx-workbench/npc/core
+
+#=============================================================================
+# Targets provided globally by CMake.
+
+# Special rule for the target edit_cache
+edit_cache:
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "No interactive CMake dialog available..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -E echo No\ interactive\ CMake\ dialog\ available.
+.PHONY : edit_cache
+
+# Special rule for the target edit_cache
+edit_cache/fast: edit_cache
+.PHONY : edit_cache/fast
+
+# Special rule for the target rebuild_cache
+rebuild_cache:
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Running CMake to regenerate build system..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake --regenerate-during-build -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR)
+.PHONY : rebuild_cache
+
+# Special rule for the target rebuild_cache
+rebuild_cache/fast: rebuild_cache
+.PHONY : rebuild_cache/fast
+
+# Special rule for the target list_install_components
+list_install_components:
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Available install components are: \"Unspecified\""
+.PHONY : list_install_components
+
+# Special rule for the target list_install_components
+list_install_components/fast: list_install_components
+.PHONY : list_install_components/fast
+
+# Special rule for the target install
+install: preinstall
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Install the project..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -P cmake_install.cmake
+.PHONY : install
+
+# Special rule for the target install
+install/fast: preinstall/fast
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Install the project..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -P cmake_install.cmake
+.PHONY : install/fast
+
+# Special rule for the target install/local
+install/local: preinstall
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Installing only the local directory..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -DCMAKE_INSTALL_LOCAL_ONLY=1 -P cmake_install.cmake
+.PHONY : install/local
+
+# Special rule for the target install/local
+install/local/fast: preinstall/fast
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Installing only the local directory..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -DCMAKE_INSTALL_LOCAL_ONLY=1 -P cmake_install.cmake
+.PHONY : install/local/fast
+
+# Special rule for the target install/strip
+install/strip: preinstall
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Installing the project stripped..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -DCMAKE_INSTALL_DO_STRIP=1 -P cmake_install.cmake
+.PHONY : install/strip
+
+# Special rule for the target install/strip
+install/strip/fast: preinstall/fast
+	@$(CMAKE_COMMAND) -E cmake_echo_color "--switch=$(COLOR)" --cyan "Installing the project stripped..."
+	/nix/store/4vq5ggsg1vmfs09r4sqbidmgvqlxrv14-cmake-3.27.8/bin/cmake -DCMAKE_INSTALL_DO_STRIP=1 -P cmake_install.cmake
+.PHONY : install/strip/fast
+
+# The main all target
+all: cmake_check_build_system
+	$(CMAKE_COMMAND) -E cmake_progress_start /home/xin/repo/ysyx-workbench/npc/core/CMakeFiles /home/xin/repo/ysyx-workbench/npc/core//CMakeFiles/progress.marks
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/Makefile2 all
+	$(CMAKE_COMMAND) -E cmake_progress_start /home/xin/repo/ysyx-workbench/npc/core/CMakeFiles 0
+.PHONY : all
+
+# The main clean target
+clean:
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+.PHONY : clean
+
+# The main clean target
+clean/fast: clean
+.PHONY : clean/fast
+
+# Prepare targets for installation.
+preinstall: all
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/Makefile2 preinstall
+.PHONY : preinstall
+
+# Prepare targets for installation.
+preinstall/fast:
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+	$(MAKE) $(MAKESILENT) -f CMakeFiles/VMain.dir/build.make CMakeFiles/VMain.dir/nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.cpp.i
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.cpp.i
+
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.s: nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.cpp.s
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.s
+
+# target to generate assembly for a file
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.cpp.s:
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/VMain.dir/build.make CMakeFiles/VMain.dir/nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.cpp.s
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.cpp.s
+
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.o: nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.o
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.o
+
+# target to build an object file
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.o:
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/VMain.dir/build.make CMakeFiles/VMain.dir/nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.o
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.o
+
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.i: nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.i
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.i
+
+# target to preprocess a source file
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.i:
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/VMain.dir/build.make CMakeFiles/VMain.dir/nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.i
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.i
+
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.s: nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.s
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.s
+
+# target to generate assembly for a file
+nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.s:
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/VMain.dir/build.make CMakeFiles/VMain.dir/nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.s
+.PHONY : nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.cpp.s
+
+# Help Target
+help:
+	@echo "The following are some of the valid targets for this Makefile:"
+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
+	@echo "... install"
+	@echo "... install/local"
+	@echo "... install/strip"
+	@echo "... list_install_components"
+	@echo "... rebuild_cache"
+	@echo "... ChiselBuild"
+	@echo "... VMain"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Syms.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Syms.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Syms.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Trace__0.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Trace__0.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Trace__0.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Trace__0__Slow.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Trace__0__Slow.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain__Trace__0__Slow.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_h3502859f__0.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_h3502859f__0.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_h3502859f__0.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_h3502859f__0__Slow.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_h3502859f__0__Slow.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_h3502859f__0__Slow.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_hda8ec1d0__0.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_hda8ec1d0__0.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_hda8ec1d0__0.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_hda8ec1d0__0__Slow.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_hda8ec1d0__0__Slow.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__DepSet_hda8ec1d0__0__Slow.s"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__Slow.o"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__Slow.i"
+	@echo "... CMakeFiles/VMain.dir/VMain.dir/VMain___024root__Slow.s"
+	@echo "... auto_bind.o"
+	@echo "... auto_bind.i"
+	@echo "... auto_bind.s"
+	@echo "... csrc_nvboard/main.o"
+	@echo "... csrc_nvboard/main.i"
+	@echo "... csrc_nvboard/main.s"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated.o"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated.i"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated.s"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_cov.o"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_cov.i"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_cov.s"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.o"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.i"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_threads.s"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.o"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.i"
+	@echo "... nix/store/lyzgj5m2zhsw9m3v1fnzr3dp1z9myyaz-verilator-5.018/share/verilator/include/verilated_vcd_c.s"
+.PHONY : help
+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
+cmake_check_build_system:
+	$(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
+.PHONY : cmake_check_build_system
+

npc/csrc/main.cpp

@@ -3,14 +3,14 @@
 #include <cstdlib>
 #include <verilated.h>
 #include <verilated_vcd_c.h>
-#include <Vexample.h>
+#include <VSwitch.h>
 
 const int MAX_SIM_TIME=100;
 
 int main(int argc, char **argv, char **env) {
     int sim_time = 0;
     Verilated::commandArgs(argc, argv);
-    Vexample *top = new Vexample;
+    VSwitch *top = new VSwitch;
 
     Verilated::traceEverOn(true);
     VerilatedVcdC *m_trace = new VerilatedVcdC; 
@@ -19,11 +19,11 @@ int main(int argc, char **argv, char **env) {
     m_trace->open("waveform.vcd");
 #endif
     for (sim_time = 0; sim_time < MAX_SIM_TIME; sim_time++) {
-        CData sw = rand() & 0b11;
+        top->io_sw_0 = rand() % 2;
-        top->sw = sw;
+        top->io_sw_1 = rand() % 2;
         top->eval();
-        printf("sw0 = %d, sw1 = %d, ledr = %d\n", sw & 0b1, sw >> 1, top->ledr);
+        printf("sw0 = %d, sw1 = %d, ledr = %d\n", top->io_sw_0, top->io_sw_1, top->io_out);
-        assert(top->ledr == ((sw >> 1) ^ (sw & 0b1)) );
+        assert(top->io_out == (top->io_sw_0 ^ top->io_sw_1));
 #ifdef VERILATOR_TRACE
         m_trace->dump(sim_time);
 #endif

npc/csrc_nvboard/main.cpp

@@ -3,15 +3,15 @@
 #include <cstdlib>
 #include <verilated.h>
 #include <verilated_vcd_c.h>
-#include <Vexample.h>
 #include <nvboard.h>
+#include <VSwitch.h>
 
 const int MAX_SIM_TIME=100;
 
-void nvboard_bind_all_pins(Vexample* top);
+void nvboard_bind_all_pins(VSwitch* top);
 
 int main(int argc, char **argv, char **env) {
-    Vexample *top = new Vexample;
+    VSwitch *top = new VSwitch;
 
     nvboard_bind_all_pins(top);
     nvboard_init();

npc/flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
+        "lastModified": 1704194953,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
+        "narHash": "sha256-RtDKd8Mynhe5CFnVT8s0/0yqtWFMM9LmCzXv/YKxnq4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
+        "rev": "bd645e8668ec6612439a9ee7e71f7eac4099d4f6",
         "type": "github"
       },
       "original": {
@@ -34,10 +34,31 @@
         "type": "github"
       }
     },
+    "nur-xin": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1704450168,
+        "narHash": "sha256-zOLL35LX83Of64quCyxpyP8rTSO/tgrfHNm52tFo6VU=",
+        "ref": "refs/heads/master",
+        "rev": "beda2a57d946f392d958755c7bb03ac092a20f42",
+        "revCount": 140,
+        "type": "git",
+        "url": "https://git.xinyang.life/xin/nur.git"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://git.xinyang.life/xin/nur.git"
+      }
+    },
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "nur-xin": "nur-xin"
       }
     },
     "systems": {

npc/flake.nix

@@ -2,37 +2,107 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-utils.url = "github:numtide/flake-utils";
+    nur-xin = {
+      url = "git+https://git.xinyang.life/xin/nur.git";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = { self, ... }@inputs: with inputs;
     flake-utils.lib.eachDefaultSystem (system:
-     let pkgs = nixpkgs.legacyPackages.${system}; in
+      let
+        pkgs = nixpkgs.legacyPackages.${system} //
+          { nur.xin = nur-xin.legacyPackages.${system}; };
+      in
       {
-        devShells.default = pkgs.mkShell {
+        devShells.default = with pkgs; mkShell {
-          packages = with pkgs; [
+          packages = [
-            verilator
-            gtkwave
-            gcc
-            gdb
-            jq
-            bear
             clang-tools
             rnix-lsp
+            gdb
+            jre
           ];
 
-          nativeBuildInputs = with pkgs; [
+          inputsFrom = [ self.packages.${system}.default ];
-            python3
+        };
+        packages.default = with pkgs; clangStdenv.mkDerivation {
+          name = "npc";
+          version = "0.0.1";
+          src = ./.;
+          nativeBuildInputs = [
+            cmake
+            sbt
+            nur.xin.nvboard
+            self.packages.${system}.circt
+          ];
+          buildInputs = [
+            verilator
+            nur.xin.nvboard
           ];
 
-          buildInputs = with pkgs; [
+          NEMU_HOME="/home/xin/repo/ysyx-workbench/nemu";
-            SDL2
+        };
-            SDL2_image
+        
+        # This version (1.43.0) of circt does not exist in nixpkgs
+        # and Chisel 5.1.0 specifically build against it, so here we are.
+        # Ref: https://github.com/NixOS/nixpkgs/blob/b6465c8/pkgs/development/compilers/circt/default.nix
+        packages.circt =
+          with pkgs;
+          let
+            pythonEnv = python3.withPackages (ps: [ ps.psutil ]);
+          in
+          stdenv.mkDerivation rec {
+            pname = "circt";
+            version = "1.43.0";
+            src = fetchFromGitHub {
+              owner = "llvm";
+              repo = "circt";
+              rev = "firtool-${version}";
+              sha256 = "sha256-RkjigboswLkLgLkgOGahQLIygCkC3Q9rbVw3LqIzREY=";
+              fetchSubmodules = true;
+            };
+
+            requiredSystemFeatures = [ "big-parallel" ];
+
+            nativeBuildInputs = [ cmake ninja git pythonEnv ];
+
+            cmakeDir = "../llvm/llvm";
+            cmakeFlags = [
+              "-DLLVM_ENABLE_BINDINGS=OFF"
+              "-DLLVM_ENABLE_OCAMLDOC=OFF"
+              "-DLLVM_BUILD_EXAMPLES=OFF"
+              "-DLLVM_OPTIMIZED_TABLEGEN=ON"
+              "-DLLVM_ENABLE_PROJECTS=mlir"
+              "-DLLVM_EXTERNAL_PROJECTS=circt"
+              "-DLLVM_EXTERNAL_CIRCT_SOURCE_DIR=.."
+              "-DCIRCT_LLHD_SIM_ENABLED=OFF"
             ];
 
-          shellHook = ''
+            LIT_FILTER_OUT = if stdenv.cc.isClang then "CIRCT :: Target/ExportSystemC/.*\.mlir" else null;
-            export NEMU_HOME=/home/xin/repo/ysyx-workbench/nemu
+
+            preConfigure = ''
+              find ./test -name '*.mlir' -exec sed -i 's|/usr/bin/env|${coreutils}/bin/env|g' {} \;
             '';
+
+            installPhase = ''
+              runHook preInstall
+              mkdir -p $out/bin
+              mv bin/{{fir,hls}tool,circt-{as,dis,lsp-server,opt,reduce,translate}} $out/bin
+              runHook postInstall
+            '';
+
+            doCheck = true;
+            checkTarget = "check-circt check-circt-integration";
+
+            meta = {
+              description = "Circuit IR compilers and tools";
+              homepage = "https://circt.org/";
+              license = lib.licenses.asl20;
+              maintainers = with lib.maintainers; [ sharzy ];
+              platforms = lib.platforms.all;
+            };
           };
       }
     );
 }
+

npc/vsrc/example.v

@@ -1,6 +0,0 @@
-module top(
-  input [1:0] sw,
-  output ledr
-);
-  assign ledr = sw[1] ^ sw[0];
-endmodule