#!/usr/bin/env python3 # # This file is part of LiteX-Boards. # # Copyright (c) 2020 Shinken Sanada # SPDX-License-Identifier: BSD-2-Clause from migen import * from litex.gen import * from litex_boards.platforms import qmtech_wukong from litex.soc.cores.clock import * from litex.soc.integration.soc_core import * from litex.soc.integration.builder import * from litex.soc.cores.video import VideoS7HDMIPHY from litex.soc.cores.video import video_timings from litex.soc.cores.led import LedChaser from litex.soc.cores.gpio import GPIOIn from litedram.modules import MT41K128M16 from litedram.phy import s7ddrphy from liteeth.phy import LiteEthPHY from liteeth.phy import LiteEthPHYMII # CRG ---------------------------------------------------------------------------------------------- class _CRG(LiteXModule): def __init__(self, platform, speed_grade, sys_clk_freq, with_video_pll=False, pix_clk=25.175e6): self.rst = Signal() self.cd_sys = ClockDomain() self.cd_sys4x = ClockDomain() self.cd_sys4x_dqs = ClockDomain() self.cd_idelay = ClockDomain() self.cd_clk100 = ClockDomain() self.cd_hdmi = ClockDomain() self.cd_hdmi5x = ClockDomain() # # # # Clk/Rst. clk50 = platform.request("clk50") rst_n = platform.request("cpu_reset") # Main PLL. self.pll = pll = S7MMCM(speedgrade=speed_grade) self.comb += pll.reset.eq(~rst_n | self.rst) pll.register_clkin(clk50, 50e6) 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) # IDelay PLL. self.pll_idelay = pll_idelay = S7PLL(speedgrade=speed_grade) self.comb += pll_idelay.reset.eq(~rst_n | self.rst) pll_idelay.register_clkin(clk50, 50e6) pll_idelay.create_clkout(self.cd_idelay, 200e6) pll_idelay.create_clkout(self.cd_clk100, 100e6) # IDelayCtrl. self.idelayctrl = S7IDELAYCTRL(self.cd_idelay) # Video PLL. if with_video_pll: self.video_pll = video_pll = S7MMCM(speedgrade=speed_grade) self.comb += video_pll.reset.eq(~rst_n | self.rst) video_pll.register_clkin(clk50, 50e6) video_pll.create_clkout(self.cd_hdmi, pix_clk) video_pll.create_clkout(self.cd_hdmi5x, 5*pix_clk) # BaseSoC ------------------------------------------------------------------------------------------ class BaseSoC(SoCCore): def __init__(self, sys_clk_freq=100e6, revision=1, speedgrade=-2, with_ethernet = False, with_etherbone = False, eth_ip = "192.168.1.50", with_led_chaser = True, with_video_terminal = False, with_video_framebuffer = False, video_timing = "640x480@60Hz", **kwargs): platform = qmtech_wukong.Platform(revision=revision,speedgrade=speedgrade) # CRG -------------------------------------------------------------------------------------- with_video_pll = (with_video_terminal or with_video_framebuffer) self.crg = _CRG(platform, speedgrade, sys_clk_freq, with_video_pll = with_video_pll, pix_clk = video_timings[video_timing]["pix_clk"] ) # SoCCore ---------------------------------------------------------------------------------- SoCCore.__init__(self, platform, sys_clk_freq, ident=f"LiteX SoC on QMTECH Wukong Board V{revision}", **kwargs) # DDR3 SDRAM ------------------------------------------------------------------------------- if not self.integrated_main_ram_size: self.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) ) # Ethernet / Etherbone --------------------------------------------------------------------- if with_ethernet or with_etherbone: self.ethphy = LiteEthPHY( clock_pads = self.platform.request("eth_clocks"), pads = self.platform.request("eth"), clk_freq = sys_clk_freq) if with_ethernet: self.add_ethernet(phy=self.ethphy, nrxslots=2) if with_etherbone: self.add_etherbone(phy=self.ethphy, ip_address=eth_ip) # Leds ------------------------------------------------------------------------------------- if with_led_chaser: self.leds = LedChaser( pads = platform.request_all("user_led"), sys_clk_freq = sys_clk_freq) # Video ----------------------------------- ------------------------------------------------- if with_video_terminal or with_video_framebuffer: self.videophy = VideoS7HDMIPHY(platform.request("hdmi_out"), clock_domain="hdmi") if with_video_terminal: self.add_video_terminal(phy=self.videophy, timings=video_timing, clock_domain="hdmi") if with_video_framebuffer: self.add_video_framebuffer(phy=self.videophy, timings=video_timing, clock_domain="hdmi") # Build -------------------------------------------------------------------------------------------- def main(): from litex.build.parser import LiteXArgumentParser parser = LiteXArgumentParser(platform=qmtech_wukong.Platform, description="LiteX SoC on QMTECH Wukong Board.") parser.add_target_argument("--sys-clk-freq", default=100e6, type=float, help="System clock frequency.") parser.add_target_argument("--revision", default=1, help="Board version (1 , 2 or 3).") parser.add_target_argument("--speedgrade", default=-1, type=int, help="FPGA speedgrade (-1 or -2).") 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.") sdopts = parser.target_group.add_mutually_exclusive_group() sdopts.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.") sdopts.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.") viopts = parser.target_group.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).") args = parser.parse_args() soc = BaseSoC( sys_clk_freq = args.sys_clk_freq, revision = int(args.revision), speedgrade = args.speedgrade, with_ethernet = args.with_ethernet, with_etherbone = args.with_etherbone, eth_ip = args.eth_ip, with_video_terminal = args.with_video_terminal, with_video_framebuffer = args.with_video_framebuffer, **parser.soc_argdict ) if args.with_spi_sdcard: soc.platform.add_extension(qmtech_wukong._sdcard_pmod_io) soc.add_spi_sdcard() if args.with_sdcard: if int(args.revision) == 1: soc.platform.add_extension(qmtech_wukong._sdcard_pmod_io) soc.add_sdcard() builder = Builder(soc, **parser.builder_argdict) if args.build: builder.build(**parser.toolchain_argdict) if args.load: prog = soc.platform.create_programmer() prog.load_bitstream(builder.get_bitstream_filename(mode="sram")) if __name__ == "__main__": main()