def build(self, platform, fragment,
build_dir = "build",
build_name = "top",
run = True,
enable_xpm = False,
**kwargs):
self._check_properties(platform)
# 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)
# Symbiflow-specific fixes
for instance in fragment.specials:
if isinstance(instance, Instance):
self._fix_instance(instance)
# Generate timing constraints
self._build_clock_constraints(platform)
# Generate verilog
v_output = platform.get_verilog(fragment, name=build_name, **kwargs)
named_sc, named_pc = platform.resolve_signals(v_output.ns)
v_file = build_name + ".v"
v_output.write(v_file)
platform.add_source(v_file)
self._generate_makefile(
platform = platform,
build_name = build_name
)
# Generate design constraints
tools.write_to_file(build_name + ".xdc", _build_xdc(named_sc, False))
tools.write_to_file(build_name + ".pcf", _build_pcf(named_sc))
tools.write_to_file(build_name + ".sdc", _build_sdc(named_pc))
if run:
_run_make()
os.chdir(cwd)
return v_output.ns
def build_io_constraints(self):
# Generate design constraints
tools.write_to_file(self._build_name + ".xdc",
_build_xdc(self.named_sc, self.named_pc))
return (self._build_name + ".xdc", "XDC")