litex-boards/litex_boards/targets/xilinx_zcu104.py

113 lines
4.3 KiB
Python
Raw Normal View History

2020-02-25 06:21:26 -05:00
#!/usr/bin/env python3
2020-02-27 03:57:26 -05:00
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2020 Antmicro <www.antmicro.com>
# Copyright (c) 2019 David Shah <dave@ds0.me>
# SPDX-License-Identifier: BSD-2-Clause
2020-02-27 03:57:26 -05:00
import os
2020-02-25 06:21:26 -05:00
import argparse
from migen import *
from migen.genlib.resetsync import AsyncResetSynchronizer
2020-02-25 06:21:26 -05:00
from litex_boards.platforms import zcu104
from litex.soc.cores.clock import *
from litex.soc.integration.soc_core import *
2020-02-25 06:21:26 -05:00
from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
2020-05-27 06:47:43 -04:00
from litex.soc.cores.bitbang import I2CMaster
2020-02-25 06:21:26 -05:00
from litedram.modules import MTA4ATF51264HZ
2020-02-25 06:21:26 -05:00
from litedram.phy import usddrphy
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq):
self.rst = Signal()
2020-02-25 06:21:26 -05:00
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_sys4x = ClockDomain(reset_less=True)
self.clock_domains.cd_pll4x = ClockDomain(reset_less=True)
self.clock_domains.cd_idelay = ClockDomain()
# # #
2020-02-25 06:21:26 -05:00
self.submodules.pll = pll = USMMCM(speedgrade=-2)
self.comb += pll.reset.eq(self.rst)
2020-02-25 06:21:26 -05:00
pll.register_clkin(platform.request("clk125"), 125e6)
pll.create_clkout(self.cd_pll4x, sys_clk_freq*4, buf=None, with_reset=False)
pll.create_clkout(self.cd_idelay, 500e6)
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
2020-02-25 06:21:26 -05:00
self.specials += [
Instance("BUFGCE_DIV", name="main_bufgce_div",
p_BUFGCE_DIVIDE=4,
i_CE=1, i_I=self.cd_pll4x.clk, o_O=self.cd_sys.clk),
Instance("BUFGCE", name="main_bufgce",
i_CE=1, i_I=self.cd_pll4x.clk, o_O=self.cd_sys4x.clk),
]
self.submodules.idelayctrl = USIDELAYCTRL(cd_ref=self.cd_idelay, cd_sys=self.cd_sys)
2020-02-25 06:21:26 -05:00
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(125e6), with_led_chaser=True, **kwargs):
2020-02-25 06:21:26 -05:00
platform = zcu104.Platform()
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq,
ident = "LiteX SoC on ZCU104",
**kwargs)
2020-02-25 06:21:26 -05:00
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq)
# DDR4 SDRAM -------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
self.submodules.ddrphy = usddrphy.USPDDRPHY(platform.request("ddram"),
2020-02-25 06:21:26 -05:00
memtype = "DDR4",
2020-03-10 11:05:59 -04:00
sys_clk_freq = sys_clk_freq,
iodelay_clk_freq = 500e6)
self.add_sdram("sdram",
phy = self.ddrphy,
module = MTA4ATF51264HZ(sys_clk_freq, "1:4"),
size = 0x40000000,
l2_cache_size = kwargs.get("l2_size", 8192)
)
2020-02-25 06:21:26 -05:00
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
2020-02-25 06:21:26 -05:00
# Build --------------------------------------------------------------------------------------------
def main():
parser = argparse.ArgumentParser(description="LiteX SoC on ZCU104")
parser.add_argument("--build", action="store_true", help="Build bitstream.")
parser.add_argument("--load", action="store_true", help="Load bitstream.")
parser.add_argument("--sys-clk-freq", default=125e6, help="System clock frequency.")
2020-02-25 06:21:26 -05:00
builder_args(parser)
soc_core_args(parser)
2020-02-25 06:21:26 -05:00
args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)),
**soc_core_argdict(args)
)
2020-02-25 06:21:26 -05:00
builder = Builder(soc, **builder_argdict(args))
builder.build(run=args.build)
2020-02-25 06:21:26 -05:00
if args.load:
prog = soc.platform.create_programmer()
prog.load_bitstream(os.path.join(builder.gateware_dir, soc.build_name + ".bit"))
2020-02-25 06:21:26 -05:00
if __name__ == "__main__":
main()