187 lines
8.6 KiB
Python
Executable File
187 lines
8.6 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# This file is part of LiteX-Boards.
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#
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# Copyright (c) 2020 Shinken Sanada <sanadashinken@gmail.com>
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# SPDX-License-Identifier: BSD-2-Clause
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from migen import *
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from litex.gen import LiteXModule
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from litex_boards.platforms import qmtech_wukong
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from litex.build.xilinx.vivado import vivado_build_args, vivado_build_argdict
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from litex.soc.cores.clock import *
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from litex.soc.integration.soc_core import *
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from litex.soc.integration.builder import *
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from litex.soc.cores.video import VideoS7HDMIPHY
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from litex.soc.cores.video import video_timings
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from litex.soc.cores.led import LedChaser
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from litex.soc.cores.gpio import GPIOIn
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from litedram.modules import MT41K128M16
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from litedram.phy import s7ddrphy
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from liteeth.phy import LiteEthPHY
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from liteeth.phy import LiteEthPHYMII
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# CRG ----------------------------------------------------------------------------------------------
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class _CRG(LiteXModule):
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def __init__(self, platform, speed_grade, sys_clk_freq, with_video_pll=False, pix_clk=25.175e6):
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self.rst = Signal()
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self.cd_sys = ClockDomain()
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self.cd_sys4x = ClockDomain()
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self.cd_sys4x_dqs = ClockDomain()
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self.cd_idelay = ClockDomain()
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self.cd_clk100 = ClockDomain()
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self.cd_hdmi = ClockDomain()
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self.cd_hdmi5x = ClockDomain()
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# # #
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plls_reset = platform.request("cpu_reset")
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plls_clk50 = platform.request("clk50")
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self.pll = pll = S7MMCM(speedgrade=speed_grade)
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self.comb += pll.reset.eq(~plls_reset | self.rst)
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pll.register_clkin(plls_clk50, 50e6)
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pll.create_clkout(self.cd_sys, sys_clk_freq)
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pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq)
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pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90)
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#pll.create_clkout(self.cd_idelay, 200e6)
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# idelay PLL
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self.pll_idelay = pll_idelay = S7PLL(speedgrade=speed_grade)
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self.comb += pll_idelay.reset.eq(~plls_reset | self.rst)
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pll_idelay.register_clkin(plls_clk50, 50e6)
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pll_idelay.create_clkout(self.cd_idelay, 200e6)
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pll_idelay.create_clkout(self.cd_clk100, 100e6)
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self.idelayctrl = S7IDELAYCTRL(self.cd_idelay)
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# Video PLL.
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if with_video_pll:
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self.video_pll = video_pll = S7MMCM(speedgrade=speed_grade)
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self.comb += video_pll.reset.eq(~plls_reset | self.rst)
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video_pll.register_clkin(plls_clk50, 50e6)
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video_pll.create_clkout(self.cd_hdmi, pix_clk)
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video_pll.create_clkout(self.cd_hdmi5x, 5*pix_clk)
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# BaseSoC ------------------------------------------------------------------------------------------
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class BaseSoC(SoCCore):
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def __init__(self, sys_clk_freq=int(100e6), board_version=1, speed_grade=-2,
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with_ethernet=False, with_etherbone=False,
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eth_ip="192.168.1.50", with_led_chaser=True, with_video_terminal=False,
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with_video_framebuffer=False, video_timing="640x480@60Hz", **kwargs):
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platform = qmtech_wukong.Platform(board_version=board_version,speed_grade=speed_grade)
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# CRG --------------------------------------------------------------------------------------
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with_video_pll = (with_video_terminal or with_video_framebuffer)
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self.crg = _CRG(platform, speed_grade, sys_clk_freq,
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with_video_pll = with_video_pll,
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pix_clk = video_timings[video_timing]["pix_clk"]
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)
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# SoCCore ----------------------------------------------------------------------------------
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SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on QMTECH Wukong Board", **kwargs)
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# DDR3 SDRAM -------------------------------------------------------------------------------
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if not self.integrated_main_ram_size:
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self.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"),
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memtype = "DDR3",
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nphases = 4,
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sys_clk_freq = sys_clk_freq)
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self.add_sdram("sdram",
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phy = self.ddrphy,
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module = MT41K128M16(sys_clk_freq, "1:4"),
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l2_cache_size = kwargs.get("l2_size", 8192)
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)
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# Ethernet / Etherbone ---------------------------------------------------------------------
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if with_ethernet or with_etherbone:
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self.ethphy = LiteEthPHY(
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clock_pads = self.platform.request("eth_clocks"),
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pads = self.platform.request("eth"),
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clk_freq = sys_clk_freq)
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if with_ethernet:
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self.add_ethernet(phy=self.ethphy, nrxslots=2)
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if with_etherbone:
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self.add_etherbone(phy=self.ethphy, ip_address=eth_ip)
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# Leds -------------------------------------------------------------------------------------
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if with_led_chaser:
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self.leds = LedChaser(
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pads = platform.request_all("user_led"),
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sys_clk_freq = sys_clk_freq)
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# Video ----------------------------------- -------------------------------------------------
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if with_video_terminal or with_video_framebuffer:
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self.videophy = VideoS7HDMIPHY(platform.request("hdmi_out"), clock_domain="hdmi")
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if with_video_terminal:
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self.add_video_terminal(phy=self.videophy, timings=video_timing, clock_domain="hdmi")
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if with_video_framebuffer:
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self.add_video_framebuffer(phy=self.videophy, timings=video_timing, clock_domain="hdmi")
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# Build --------------------------------------------------------------------------------------------
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def main():
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from litex.soc.integration.soc import LiteXSoCArgumentParser
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parser = LiteXSoCArgumentParser(description="LiteX SoC on QMTECH Wukong Board")
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target_group = parser.add_argument_group(title="Target options")
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target_group.add_argument("--build", action="store_true", help="Build design.")
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target_group.add_argument("--load", action="store_true", help="Load bitstream.")
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target_group.add_argument("--sys-clk-freq", default=100e6, help="System clock frequency.")
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target_group.add_argument("--board-version", default=1, help="Board version (1 or 2).")
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target_group.add_argument("--speed-grade", default=-1, help="FPGA speed grade (-1 or -2).")
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ethopts = target_group.add_mutually_exclusive_group()
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ethopts.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support.")
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ethopts.add_argument("--with-etherbone", action="store_true", help="Enable Etherbone support.")
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target_group.add_argument("--eth-ip", default="192.168.1.50", type=str, help="Ethernet/Etherbone IP address.")
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sdopts = target_group.add_mutually_exclusive_group()
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sdopts.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.")
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sdopts.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.")
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viopts = target_group.add_mutually_exclusive_group()
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viopts.add_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI).")
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viopts.add_argument("--with-video-framebuffer", action="store_true", help="Enable Video Framebuffer (HDMI).")
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builder_args(parser)
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soc_core_args(parser)
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vivado_build_args(parser)
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args = parser.parse_args()
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speed_grade = int(args.speed_grade)
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if speed_grade not in [-1,-2]:
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raise ValueError("Speed grade {} unsupported".format(speed_grade))
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soc = BaseSoC(
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sys_clk_freq = int(float(args.sys_clk_freq)),
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board_version = int(args.board_version),
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speed_grade = speed_grade,
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with_ethernet = args.with_ethernet,
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with_etherbone = args.with_etherbone,
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eth_ip = args.eth_ip,
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with_video_terminal = args.with_video_terminal,
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with_video_framebuffer = args.with_video_framebuffer,
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**soc_core_argdict(args)
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)
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if args.with_spi_sdcard:
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soc.platform.add_extension(qmtech_wukong._sdcard_pmod_io)
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soc.add_spi_sdcard()
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if args.with_sdcard:
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if int(args.board_version) < 2:
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soc.platform.add_extension(qmtech_wukong._sdcard_pmod_io)
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soc.add_sdcard()
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builder = Builder(soc, **builder_argdict(args))
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if args.build:
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builder.build(**vivado_build_argdict(args))
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if args.load:
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prog = soc.platform.create_programmer()
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prog.load_bitstream(builder.get_bitstream_filename(mode="sram"))
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if __name__ == "__main__":
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main()
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