litex-boards/litex_boards/targets/simple.py

66 lines
2.5 KiB
Python
Executable File

#!/usr/bin/env python3
# This file is Copyright (c) 2014-2019 Florent Kermarrec <florent@enjoy-digital.fr>
# This file is Copyright (c) 2013-2014 Sebastien Bourdeauducq <sb@m-labs.hk>
# License: BSD
import argparse
import importlib
from migen import *
from litex.build.io import CRG
from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from liteeth.phy import LiteEthPHY
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, platform, with_ethernet=False, **kwargs):
sys_clk_freq = int(1e9/platform.default_clk_period)
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, clk_freq=sys_clk_freq, **kwargs)
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = CRG(platform.request(platform.default_clk_name))
# Ethernet ---------------------------------------------------------------------------------
if with_ethernet:
self.submodules.ethphy = LiteEthPHY(
clock_pads = self.platform.request("eth_clocks"),
pads = self.platform.request("eth"),
clk_freq = self.clk_freq)
self.add_csr("ethphy")
self.add_ethernet(phy=self.ethphy)
# Build --------------------------------------------------------------------------------------------
def main():
parser = argparse.ArgumentParser(description="Generic LiteX SoC")
builder_args(parser)
soc_core_args(parser)
parser.add_argument("--with-ethernet", action="store_true",
help="enable Ethernet support")
parser.add_argument("platform",
help="module name of the platform to build for")
parser.add_argument("--gateware-toolchain", default=None,
help="FPGA gateware toolchain used for build")
args = parser.parse_args()
platform_module = importlib.import_module(args.platform)
if args.gateware_toolchain is not None:
platform = platform_module.Platform(toolchain=args.gateware_toolchain)
else:
platform = platform_module.Platform()
soc = BaseSoC(platform, with_ethernet=args.with_ethernet, **soc_core_argdict(args))
builder = Builder(soc, **builder_argdict(args))
builder.build()
if __name__ == "__main__":
main()