#!/usr/bin/env bash

CODE_DIR=$(pwd)/code
BUILD_DIR=$(pwd)/build

COMMAND=$1

if [ "$1" == "build" ]; then
	mkdir -p $BUILD_DIR
	pushd $BUILD_DIR

	yosys -q -p 'synth_ice40 -top top -blif top.blif' $CODE_DIR/top.v
	arachne-pnr -q -d 8k -P cm81 -o top.asc -p $CODE_DIR/pins.pcf top.blif
	icepack top.asc top.bin
	icetime -d lp8k -mtr top.rpt top.asc

	iverilog -g2005-sv -o testbench $CODE_DIR/cpu_tb.v $CODE_DIR/cpu.v
	vvp testbench
	popd
elif [ "$1" == "clean" ]; then
	rm -r $BUILD_DIR
elif [ "$1" == "program" ]; then
	tinyprog -p $BUILD_DIR/top.bin
elif [ "$1" == "sim" ]; then
	gtkwave $BUILD_DIR/testbench.vcd
else
	echo "Invalid arguments"
fi