litex-boards/litex_boards/targets/decklink_mini_4k.py

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#!/usr/bin/env python3
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#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2021 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause
import os
import argparse
from migen import *
from litex_boards.platforms import mini_4k
from litex.build.xilinx.vivado import vivado_build_args, vivado_build_argdict
from litex.soc.cores.clock import *
from litex.soc.integration.soc import SoCRegion
from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from litex.soc.cores.video import VideoS7GTPHDMIPHY
from litedram.modules import MT41K128M16
from litedram.phy import s7ddrphy
from litepcie.phy.s7pciephy import S7PCIEPHY
from litepcie.software import generate_litepcie_software
# 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(reset_less=True)
self.clock_domains.cd_sys4x_dqs = ClockDomain(reset_less=True)
self.clock_domains.cd_idelay = ClockDomain()
self.clock_domains.cd_hdmi = ClockDomain()
# # #
self.submodules.pll = pll = S7PLL(speedgrade=-1)
self.comb += pll.reset.eq(self.rst)
pll.register_clkin(platform.request("clk100"), 100e6)
pll.create_clkout(self.cd_sys, sys_clk_freq)
pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq)
pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90)
pll.create_clkout(self.cd_idelay, 200e6, margin=1e-1) # FIXME: Re-arrange clocking.
pll.create_clkout(self.cd_hdmi, 148.5e6, margin=2e-2) # FIXME: Use a second PLL or move to clkout0 that has fractional support.
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_idelay)
platform.add_platform_command("set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets clk100_IBUF]")
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCMini):
def __init__(self, sys_clk_freq=int(100e6), with_pcie=False, with_video_terminal=False, with_video_framebuffer=False, **kwargs):
if with_video_terminal or with_video_framebuffer:
sys_clk_freq = int(148.5e6) # FIXME: For now requires sys_clk >= video_clk.
platform = mini_4k.Platform()
# SoCCore ----------------------------------------------------------------------------------
kwargs["uart_name"] = "jtag_uart"
SoCCore.__init__(self, platform, sys_clk_freq,
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ident = "LiteX SoC on Blackmagic Decklink Mini 4K",
ident_version = True,
**kwargs)
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq)
# DDR3 SDRAM -------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"),
memtype = "DDR3",
nphases = 4,
sys_clk_freq = sys_clk_freq)
self.add_sdram("sdram",
phy = self.ddrphy,
module = MT41K128M16(sys_clk_freq, "1:4"),
l2_cache_size = kwargs.get("l2_size", 8192)
)
# 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)
# Video ------------------------------------------------------------------------------------
if with_video_terminal or with_video_framebuffer:
self.submodules.videophy = VideoS7GTPHDMIPHY(platform.request("hdmi_out"),
sys_clk_freq = sys_clk_freq,
clock_domain = "hdmi"
)
if with_video_terminal:
self.add_video_terminal(phy=self.videophy, timings="1920x1080@60Hz", clock_domain="hdmi")
if with_video_framebuffer:
self.add_video_framebuffer(phy=self.videophy, timings="1920x1080@60Hz", clock_domain="hdmi")
platform.add_platform_command("set_property SEVERITY {{Warning}} [get_drc_checks REQP-49]") # FIXME: Use GTP refclk.
# Build --------------------------------------------------------------------------------------------
def main():
parser = argparse.ArgumentParser(description="LiteX SoC Blackmagic Decklink Mini 4K.")
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=148.5e6, help="System clock frequency (default: 100MHz)")
parser.add_argument("--with-pcie", action="store_true", help="Enable PCIe support")
parser.add_argument("--driver", action="store_true", help="Generate PCIe driver")
viopts = parser.add_mutually_exclusive_group()
viopts.add_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI)")
viopts.add_argument("--with-video-framebuffer", action="store_true", help="Enable Video Framebuffer (HDMI)")
builder_args(parser)
soc_core_args(parser)
vivado_build_args(parser)
args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)),
with_pcie = args.with_pcie,
with_video_terminal = args.with_video_terminal,
with_video_framebuffer = args.with_video_framebuffer,
**soc_core_argdict(args)
)
builder = Builder(soc, **builder_argdict(args))
builder_kwargs = vivado_build_argdict(args)
builder.build(**builder_kwargs, 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(os.path.join(builder.gateware_dir, soc.build_name + ".bit"))
if __name__ == "__main__":
main()