initial commit

1 files changed, 56 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8a4049e
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,56 @@
+PROJ_NAME = riscv_cpu
+TOP_MODULE = top
+
+SRC_DIR = src
+CONSTRAINTS_DIR = constraints
+
+SOURCES = $(wildcard $(SRC_DIR)/*.v)
+CONSTRAINTS = $(CONSTRAINTS_DIR)/tangnano9k.cst
+
+BUILD_DIR = build
+BITSTREAM = $(BUILD_DIR)/$(PROJ_NAME).fs
+
+YOSYS = yosys
+NEXTPNR = nextpnr-gowin
+GOWIN_PACK = gowin_pack
+PROGRAMMER = openFPGALoader
+
+FAMILY = GW1N-9C
+DEVICE = GW1NR-LV9QN88PC6/I5
+BOARD = tangnano9k
+
+all: $(BITSTREAM)
+
+$(BUILD_DIR)/$(PROJ_NAME).json: $(SOURCES)
+	@echo "=================================================="
+	@echo "Synthesizing"
+	@echo "=================================================="
+	
+	@mkdir -p $(BUILD_DIR)
+	$(YOSYS) -p "synth_gowin -top $(TOP_MODULE)" -o $(BUILD_DIR)/$(PROJ_NAME).json $(SOURCES)
+	
+$(BUILD_DIR)/$(PROJ_NAME)_pnr.json: $(BUILD_DIR)/$(PROJ_NAME).json $(CONSTRAINTS)
+	@echo "=================================================="
+	@echo "Routing"
+	@echo "=================================================="
+
+	$(NEXTPNR) --json $(BUILD_DIR)/$(PROJ_NAME).json --write $(BUILD_DIR)/$(PROJ_NAME)_pnr.json --device $(DEVICE) --family $(FAMILY) --cst $(CONSTRAINTS)
+
+$(BITSTREAM): $(BUILD_DIR)/$(PROJ_NAME)_pnr.json
+	@echo "=================================================="
+	@echo "Generating Bitstream"
+	@echo "=================================================="
+
+	$(GOWIN_PACK) -d $(FAMILY) -o $(BITSTREAM) $(BUILD_DIR)/$(PROJ_NAME)_pnr.json
+	
+program: $(BITSTREAM)
+	$(PROGRAMMER) -b $(BOARD) $(BITSTREAM)
+
+flash: $(BITSTREAM)
+	$(PROGRAMMER) -b $(BOARD) -f $(BITSTREAM)
+
+
+clean:
+	rm -rf $(BUILD_DIR)
+
+.PHONY: all program clean