def build(self,
platform,
fragment,
build_dir="build",
build_name="top",
run=True,
nowidelut=False,
abc9=False,
timingstrict=False,
ignoreloops=False,
seed=1,
es_device=False,
**kwargs):
# Create build directory
os.makedirs(build_dir, exist_ok=True)
cwd = os.getcwd()
os.chdir(build_dir)
# Finalize design
if not isinstance(fragment, _Fragment):
fragment = fragment.get_fragment()
platform.finalize(fragment)
# Generate verilog
v_output = platform.get_verilog(fragment, name=build_name, **kwargs)
named_sc, named_pc = platform.resolve_signals(v_output.ns)
top_file = build_name + ".v"
v_output.write(top_file)
platform.add_source(top_file)
# Generate design constraints file (.pdc)
_build_pdc(named_sc, named_pc, self.clocks, v_output.ns, build_name)
# Generate Yosys script
_build_yosys(self.yosys_template, platform, nowidelut, abc9,
build_name)
# N.B. Radiant does not allow a choice between ES1/production, this is determined
# solely by the installed Radiant version. nextpnr/oxide supports both, so we
# must choose what we are dealing with
device = platform.device
if es_device:
device += "ES"
# Generate build script
script = _build_script(False, self.build_template, build_name, device,
timingstrict, ignoreloops, seed)
# Run
if run:
_run_script(script)
os.chdir(cwd)
return v_output.ns
def build_io_constraints(self):
_build_pdc(self.named_sc, self.named_pc, self.clocks, self._vns, self._build_name)
return (self._build_name + ".pdc", "PDC")