litex-boards/litex_boards/targets/adi_adrv2crr_fmc.py

156 lines
6.1 KiB
Python
Executable File

#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2020 Florent Kermarrec <florent@enjoy-digital.fr>
# Copyright (c) 2022 Sylvain Munaut <tnt@246tNt.com>
# SPDX-License-Identifier: BSD-2-Clause
import os
import argparse
from migen import *
from litex_boards.platforms import adi_adrv2crr_fmc
from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from litex.soc.cores.clock import *
from litex.soc.cores.led import LedChaser
from litex.soc.cores.pwm import PWM
from litex.soc.cores.xadc import ZynqUSPSystemMonitor
from litedram.modules import MT40A512M16
from litedram.phy import usddrphy
from litepcie.phy.usppciephy import USPPCIEPHY
from litepcie.software import generate_litepcie_software
# CRG ----------------------------------------------------------------------------------------------
class CRG(Module):
def __init__(self, platform, sys_clk_freq, ddram_channel):
self.rst = Signal()
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()
# # #
self.submodules.pll = pll = USPMMCM(speedgrade=-1)
self.comb += pll.reset.eq(self.rst)
pll.register_clkin(platform.request("ddram_refclk", ddram_channel), 300e6)
pll.create_clkout(self.cd_pll4x, sys_clk_freq*4, buf=None, with_reset=False)
pll.create_clkout(self.cd_idelay, 400e6)
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
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 = USPIDELAYCTRL(cd_ref=self.cd_idelay, cd_sys=self.cd_sys)
# BaseSoC -----------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(150e6), ddram_channel=0, with_led_chaser=True,
with_pcie=False, **kwargs):
platform = adi_adrv2crr_fmc.Platform()
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq,
ident = "LiteX SoC on ADI ADRV2CRR-FMC",
**kwargs)
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = CRG(platform, sys_clk_freq, ddram_channel)
# DDR4 SDRAM -------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
self.submodules.ddrphy = usddrphy.USPDDRPHY(
pads = platform.request("ddram", ddram_channel),
memtype = "DDR4",
sys_clk_freq = sys_clk_freq,
iodelay_clk_freq = 400e6)
self.add_sdram("sdram",
phy = self.ddrphy,
module = MT40A512M16(sys_clk_freq, "1:4"),
size = 0x40000000,
l2_cache_size = kwargs.get("l2_size", 8192)
)
# PCIe -------------------------------------------------------------------------------------
if with_pcie:
assert self.csr_data_width == 32
self.submodules.pcie_phy = USPPCIEPHY(platform, platform.request("pcie_x4"),
speed = "gen3",
data_width = 128,
bar0_size = 0x20000)
self.add_pcie(phy=self.pcie_phy, ndmas=1)
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
# Fan --------------------------------------------------------------------------------------
# Full speed is _really_ loud and with this demo bitstream which is almost
# empty, we can slow it way down and still keep the FPGA < 10C above ambient
self.submodules.fan = PWM(
default_enable = 1,
default_period = 2500,
default_width = 500
)
self.comb += platform.request("fan").pwm_n.eq(~self.fan.pwm)
# SYSMON -----------------------------------------------------------------------------------
self.submodules.sysmon = ZynqUSPSystemMonitor()
# JTAG -------------------------------------------------------------------------------------
self.add_jtagbone()
# Build --------------------------------------------------------------------------------------------
def main():
parser = argparse.ArgumentParser(description="LiteX SoC on ADI ADRV2CRR-FMC")
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=150e6, help="System clock frequency (default: 150 MHz)")
parser.add_argument("--with-pcie", action="store_true", help="Enable PCIe support")
parser.add_argument("--driver", action="store_true", help="Generate PCIe driver")
builder_args(parser)
soc_core_args(parser)
args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)),
with_pcie = args.with_pcie,
**soc_core_argdict(args)
)
builder = Builder(soc, **builder_argdict(args))
builder.build(run=args.build)
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"))
if __name__ == "__main__":
main()