# Use local tools
#GHDLSYNTH = ghdl.so
#YOSYS     = yosys
#NEXTPNR   = nextpnr-ecp5
#ECPPACK   = ecppack
#OPENOCD    = openocd

# Use Docker images
DOCKER=docker
#DOCKER=podman
#
PWD = $(shell pwd)
DOCKERARGS = run --rm -v $(PWD):/src -w /src
#
GHDLSYNTH = ghdl
YOSYS     = $(DOCKER) $(DOCKERARGS) ghdl/synth:beta yosys
NEXTPNR   = $(DOCKER) $(DOCKERARGS) ghdl/synth:nextpnr-ecp5 nextpnr-ecp5
ECPPACK   = $(DOCKER) $(DOCKERARGS) ghdl/synth:trellis ecppack
OPENOCD   = $(DOCKER) $(DOCKERARGS) --device /dev/bus/usb ghdl/synth:prog openocd


# Hello world
GHDL_IMAGE_GENERICS=-gMEMORY_SIZE=8192 -gRAM_INIT_FILE=hello_world/hello_world.hex

# Micropython
#GHDL_IMAGE_GENERICS=-gMEMORY_SIZE=393216 -gRAM_INIT_FILE=micropython/firmware.hex


# OrangeCrab with ECP85
#GHDL_TARGET_GENERICS=-gRESET_LOW=true -gCLK_INPUT=50000000 -gCLK_FREQUENCY=50000000
#LPF=constraints/orange-crab.lpf
#PACKAGE=CSFBGA285
#NEXTPNR_FLAGS=--um5g-85k --freq 50
#OPENOCD_JTAG_CONFIG=openocd/olimex-arm-usb-tiny-h.cfg
#OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg

# ECP5-EVN
GHDL_TARGET_GENERICS=-gRESET_LOW=true -gCLK_INPUT=12000000 -gCLK_FREQUENCY=12000000
LPF=constraints/ecp5-evn.lpf
PACKAGE=CABGA381
NEXTPNR_FLAGS=--um5g-85k --freq 12
OPENOCD_JTAG_CONFIG=openocd/ecp5-evn.cfg
OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg

VHDL_FILES  = wishbone_types.vhdl utils.vhdl fpga/main_bram.vhdl
VHDL_FILES += wishbone_bram_wrapper.vhdl decode_types.vhdl common.vhdl
VHDL_FILES += fpga/pp_fifo.vhd fpga/pp_soc_uart.vhd wishbone_arbiter.vhdl
VHDL_FILES += dmi_dtm_dummy.vhdl wishbone_debug_master.vhdl helpers.vhdl
VHDL_FILES += loadstore1.vhdl crhelpers.vhdl writeback.vhdl ppc_fx_insns.vhdl
VHDL_FILES += countzero.vhdl insn_helpers.vhdl rotator.vhdl logical.vhdl
VHDL_FILES += execute1.vhdl fetch1.vhdl gpr_hazard.vhdl cr_hazard.vhdl
VHDL_FILES += control.vhdl decode2.vhdl cr_file.vhdl cache_ram.vhdl plru.vhdl
VHDL_FILES += dcache.vhdl core_debug.vhdl multiply.vhdl icache.vhdl fetch2.vhdl
VHDL_FILES += register_file.vhdl decode1.vhdl divider.vhdl core.vhdl soc.vhdl
VHDL_FILES += fpga/soc_reset.vhdl fpga/clk_gen_bypass.vhd fpga/toplevel.vhdl

all: microwatt.bit

microwatt.json: $(VHDL_FILES)
	$(YOSYS) -m $(GHDLSYNTH) -p "ghdl --std=08 $(GHDL_IMAGE_GENERICS) $(GHDL_TARGET_GENERICS) $(VHDL_FILES) -e toplevel; synth_ecp5 -json $@"

microwatt_out.config: microwatt.json $(LPF)
	$(NEXTPNR) --json $< --lpf $(LPF) --textcfg $@ $(NEXTPNR_FLAGS) --package $(PACKAGE)

microwatt.bit: microwatt_out.config
	$(ECPPACK) --svf microwatt.svf $< $@

microwatt.svf: microwatt.bit

prog: microwatt.svf
	$(OPENOCD) -f $(OPENOCD_JTAG_CONFIG) -f $(OPENOCD_DEVICE_CONFIG) -c "transport select jtag; init; svf $<; exit"

clean:
	@rm -f work-obj08.cf *.bit *.json *.svf *.config

.PHONY: clean prog
.PRECIOUS: microwatt.json microwatt_out.config microwatt.bit