litex-boards/litex_boards/targets/xilinx_kc705.py

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2019-06-10 11:09:51 -04:00
#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2014-2015 Sebastien Bourdeauducq <sb@m-labs.hk>
# Copyright (c) 2014-2020 Florent Kermarrec <florent@enjoy-digital.fr>
# Copyright (c) 2014-2015 Yann Sionneau <ys@m-labs.hk>
# SPDX-License-Identifier: BSD-2-Clause
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import os
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from migen import *
from litex_boards.platforms import kc705
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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 MT8JTF12864
from litedram.phy import s7ddrphy
from liteeth.phy import LiteEthPHY
from litepcie.phy.s7pciephy import S7PCIEPHY
from litepcie.software import generate_litepcie_software
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# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq):
self.rst = Signal()
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_sys4x = ClockDomain()
self.clock_domains.cd_idelay = ClockDomain()
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# # #
self.submodules.pll = pll = S7MMCM(speedgrade=-2)
self.comb += pll.reset.eq(platform.request("cpu_reset") | self.rst)
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pll.register_clkin(platform.request("clk200"), 200e6)
pll.create_clkout(self.cd_sys, sys_clk_freq)
pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq)
pll.create_clkout(self.cd_idelay, 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.submodules.idelayctrl = S7IDELAYCTRL(self.cd_idelay)
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# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(125e6), with_ethernet=False, with_led_chaser=True,
with_pcie=False, with_sata=False, **kwargs):
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platform = kc705.Platform()
# CRG --------------------------------------------------------------------------------------
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self.submodules.crg = _CRG(platform, sys_clk_freq)
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on KC705", **kwargs)
# DDR3 SDRAM -------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
self.submodules.ddrphy = s7ddrphy.K7DDRPHY(platform.request("ddram"),
memtype = "DDR3",
nphases = 4,
sys_clk_freq = sys_clk_freq)
self.add_sdram("sdram",
phy = self.ddrphy,
module = MT8JTF12864(sys_clk_freq, "1:4"),
l2_cache_size = kwargs.get("l2_size", 8192)
)
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# 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_ethernet(phy=self.ethphy)
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# PCIe -------------------------------------------------------------------------------------
if with_pcie:
self.submodules.pcie_phy = S7PCIEPHY(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
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("sfp2sata", 0,
Subsignal("tx_p", Pins("H2")),
Subsignal("tx_n", Pins("H1")),
Subsignal("rx_p", Pins("G4")),
Subsignal("rx_n", Pins("G3")),
),
]
platform.add_extension(_sata_io)
# RefClk, Generate 150MHz from PLL.
self.clock_domains.cd_sata_refclk = ClockDomain()
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-52]")
# PHY
self.submodules.sata_phy = LiteSATAPHY(platform.device,
refclk = sata_refclk,
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pads = platform.request("sfp2sata"),
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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.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
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# Build --------------------------------------------------------------------------------------------
def main():
from litex.soc.integration.soc import LiteXSoCArgumentParser
parser = LiteXSoCArgumentParser(description="LiteX SoC on KC705")
target_group = parser.add_argument_group(title="Target options")
target_group.add_argument("--build", action="store_true", help="Build bitstream.")
target_group.add_argument("--load", action="store_true", help="Load bitstream.")
target_group.add_argument("--sys-clk-freq", default=125e6, help="System clock frequency.")
target_group.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support.")
target_group.add_argument("--with-pcie", action="store_true", help="Enable PCIe support.")
target_group.add_argument("--driver", action="store_true", help="Generate PCIe driver.")
target_group.add_argument("--with-sata", action="store_true", help="Enable SATA support (over SFP2SATA).")
builder_args(parser)
soc_core_args(parser)
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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_pcie = args.with_pcie,
with_sata = args.with_sata,
**soc_core_argdict(args)
)
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builder = Builder(soc, **builder_argdict(args))
builder.build(run=args.build)
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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()