litex-boards/litex_boards/targets/xilinx_kcu105.py

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#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2018-2020 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause
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import os
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from migen import *
from migen.genlib.resetsync import AsyncResetSynchronizer
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from litex.gen import LiteXModule
from litex_boards.platforms import xilinx_kcu105
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from litex.soc.cores.clock import *
from litex.soc.integration.soc_core import *
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from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
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from litedram.modules import EDY4016A
from litedram.phy import usddrphy
from liteeth.phy.ku_1000basex import KU_1000BASEX
from litepcie.phy.uspciephy import USPCIEPHY
from litepcie.software import generate_litepcie_software
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# CRG ----------------------------------------------------------------------------------------------
class _CRG(LiteXModule):
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def __init__(self, platform, sys_clk_freq):
self.rst = Signal()
self.cd_sys = ClockDomain()
self.cd_sys4x = ClockDomain()
self.cd_pll4x = ClockDomain()
self.cd_idelay = ClockDomain()
self.cd_eth = ClockDomain()
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# # #
self.pll = pll = USMMCM(speedgrade=-2)
self.comb += pll.reset.eq(platform.request("cpu_reset") | self.rst)
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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, 200e6)
pll.create_clkout(self.cd_eth, 200e6)
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
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self.specials += [
Instance("BUFGCE_DIV",
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p_BUFGCE_DIVIDE=4,
i_CE=1, i_I=self.cd_pll4x.clk, o_O=self.cd_sys.clk),
Instance("BUFGCE",
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i_CE=1, i_I=self.cd_pll4x.clk, o_O=self.cd_sys4x.clk),
]
self.idelayctrl = USIDELAYCTRL(cd_ref=self.cd_idelay, cd_sys=self.cd_sys)
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# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(125e6), with_ethernet=False, with_etherbone=False,
eth_ip="192.168.1.50", with_led_chaser=True, with_pcie=False, with_sata=False,
**kwargs):
platform = xilinx_kcu105.Platform()
# CRG --------------------------------------------------------------------------------------
self.crg = _CRG(platform, sys_clk_freq)
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# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on KCU105", **kwargs)
# DDR4 SDRAM -------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
self.ddrphy = usddrphy.USDDRPHY(platform.request("ddram"),
memtype = "DDR4",
sys_clk_freq = sys_clk_freq,
iodelay_clk_freq = 200e6)
self.add_sdram("sdram",
phy = self.ddrphy,
module = EDY4016A(sys_clk_freq, "1:4"),
size = 0x40000000,
l2_cache_size = kwargs.get("l2_size", 8192)
)
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# Ethernet / Etherbone ---------------------------------------------------------------------
if with_ethernet or with_etherbone:
self.ethphy = KU_1000BASEX(self.crg.cd_eth.clk,
data_pads = self.platform.request("sfp", 0),
sys_clk_freq = self.clk_freq)
self.comb += self.platform.request("sfp_tx_disable_n", 0).eq(1)
self.platform.add_platform_command("set_property SEVERITY {{Warning}} [get_drc_checks REQP-1753]")
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if with_ethernet:
self.add_ethernet(phy=self.ethphy)
if with_etherbone:
self.add_etherbone(phy=self.ethphy, ip_address=eth_ip)
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# PCIe -------------------------------------------------------------------------------------
if with_pcie:
self.pcie_phy = USPCIEPHY(platform, platform.request("pcie_x4"),
data_width = 128,
bar0_size = 0x20000)
self.add_pcie(phy=self.pcie_phy, ndmas=1)
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# SATA -------------------------------------------------------------------------------------
if with_sata:
from litex.build.generic_platform import Subsignal, Pins
from litesata.phy import LiteSATAPHY
# IOs
_sata_io = [
# SFP 2 SATA Adapter / https://shop.trenz-electronic.de/en/TE0424-01-SFP-2-SATA-Adapter
("sfp2sata", 0,
Subsignal("tx_p", Pins("U4")),
Subsignal("tx_n", Pins("U3")),
Subsignal("rx_p", Pins("T2")),
Subsignal("rx_n", Pins("T1")),
),
]
platform.add_extension(_sata_io)
# RefClk, Generate 150MHz from PLL.
self.cd_sata_refclk = ClockDomain()
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self.crg.pll.create_clkout(self.cd_sata_refclk, 150e6)
sata_refclk = ClockSignal("sata_refclk")
platform.add_platform_command("set_property SEVERITY {{Warning}} [get_drc_checks REQP-1753]")
# PHY
self.sata_phy = LiteSATAPHY(platform.device,
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refclk = sata_refclk,
pads = platform.request("sfp2sata"),
gen = "gen2",
clk_freq = sys_clk_freq,
data_width = 16)
# Core
self.add_sata(phy=self.sata_phy, mode="read+write")
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
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# Build --------------------------------------------------------------------------------------------
def main():
from litex.build.parser import LiteXArgumentParser
parser = LiteXArgumentParser(platform=xilinx_kcu105.Platform, description="LiteX SoC on KCU105")
parser.add_target_argument("--sys-clk-freq", default=125e6, help="System clock frequency.")
ethopts = parser.target_group.add_mutually_exclusive_group()
ethopts.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support.")
ethopts.add_argument("--with-etherbone", action="store_true", help="Enable Etherbone support.")
parser.add_target_argument("--eth-ip", default="192.168.1.50", help="Ethernet/Etherbone IP address.")
parser.add_target_argument("--with-pcie", action="store_true", help="Enable PCIe support.")
parser.add_target_argument("--driver", action="store_true", help="Generate PCIe driver.")
parser.add_target_argument("--with-sata", action="store_true", help="Enable SATA support (over SFP2SATA).")
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args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)),
with_ethernet = args.with_ethernet,
with_etherbone = args.with_etherbone,
eth_ip = args.eth_ip,
with_pcie = args.with_pcie,
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with_sata = args.with_sata,
**parser.soc_core_argdict
)
builder = Builder(soc, **parser.builder_argdict)
if args.build:
builder.build(**parser.toolchain_argdict)
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if args.driver:
generate_litepcie_software(soc, os.path.join(builder.output_dir, "driver"))
if args.load:
prog = soc.platform.create_programmer()
prog.load_bitstream(builder.get_bitstream_filename(mode="sram"))
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if __name__ == "__main__":
main()