Makefile.ice40

##
## Make the bitstream for iCE40 boards
##
include common.mk

USBDIR = tinydfu-bootloader/usb
USBSRCS = $(USBDIR)/edge_detect.v \
          $(USBDIR)/strobe.v \
          $(USBDIR)/usb_fs_in_arb.v \
          $(USBDIR)/usb_fs_in_pe.v \
          $(USBDIR)/usb_fs_out_arb.v \
          $(USBDIR)/usb_fs_out_pe.v \
          $(USBDIR)/usb_fs_pe.v \
          $(USBDIR)/usb_fs_rx.v \
          $(USBDIR)/usb_fs_tx_mux.v \
          $(USBDIR)/usb_fs_tx.v \
          $(USBDIR)/usb_string_rom.v \
          $(USBDIR)/usb_serial_core.v \
          $(USBDIR)/usb_serial_ctrl_ep.v \
          $(USBDIR)/usb_uart_in_ep.v \
          $(USBDIR)/usb_uart_out_ep.v \
          $(USBDIR)/usb_phy_ice40.v

BASENAME ?= vextest
PROJTOP = $(BASENAME)_tbx

SRC = $(PROJTOP).v tinyfpga_pll.v wb_usb_serial.v $(SOURCES) $(USBSRCS)

PIN_DEF = pins.pcf
DEVICE = --lp8k
PACKAGE = cm81
CLK_MHZ = 48

all: $(PROJTOP).bit

tinyfpga_pll.v:
	icepll -i 16 -o $(CLK_MHZ) -m -f $@

$(PROJTOP).json: $(SRC) firmware.mem
	yosys -q -p 'synth_ice40 -top $(PROJTOP) -json $@' $(filter %.v,$^)

%.asc: %.json $(PIN_DEF)
	nextpnr-ice40  --json $< --asc $@ $(DEVICE) --package $(PACKAGE) --pcf $(PIN_DEF) --opt-timing

%.bit: %.asc
	icepack $< $@

# Firmware Build Rules.
firmware.mem:
	make -C firmware firmware.bin
	hexdump -v -e '"" 1/4 "%08x\n"' firmware/firmware.bin > $@

gui: $(PROJTOP).json $(PIN_DEF)
	nextpnr-ice40 --json $< $(DEVICE) --package $(PACKAGE) --pcf $(PIN_DEF) --opt-timing --gui

# Cleanup Rules
clean:
	make -C firmware clean
	rm -f $(PROJTOP).json $(PROJTOP).svf $(PROJTOP).bit $(PROJTOP).asc $(PROJTOP).hex
	rm -f firmware.mem

.SECONDARY:
.PHONY: all clean gui