litex/litex/build/gowin/platform.py

46 lines
1.7 KiB
Python

#
# This file is part of LiteX.
#
# Copyright (c) 2020 Pepijn de Vos <pepijndevos@gmail.com>
# Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause
import os
from litex.build.generic_platform import GenericPlatform
from litex.build.gowin import common, gowin
# GowinPlatform -----------------------------------------------------------------------------------
class GowinPlatform(GenericPlatform):
bitstream_ext = ".fs"
def __init__(self, device, *args, toolchain="gowin", devicename=None, **kwargs):
GenericPlatform.__init__(self, device, *args, **kwargs)
if not devicename:
idx = device.find('-')
likely_name = f"{device[:idx]}-{device[idx+3]}"
raise ValueError(f"devicename not provided, maybe {likely_name}?")
self.devicename = devicename
if toolchain == "gowin":
self.toolchain = gowin.GowinToolchain()
elif toolchain == "apicula":
raise ValueError("Apicula toolchain needs more work")
else:
raise ValueError("Unknown toolchain")
def get_verilog(self, *args, special_overrides=dict(), **kwargs):
so = dict(common.gowin_special_overrides)
so.update(special_overrides)
return GenericPlatform.get_verilog(self, *args,
special_overrides = so,
attr_translate = self.toolchain.attr_translate,
**kwargs)
def build(self, *args, **kwargs):
return self.toolchain.build(self, *args, **kwargs)
def add_period_constraint(self, clk, period):
if clk is None: return
self.toolchain.add_period_constraint(self, clk, period)