#!/usr/bin/env python3 # # This file is part of LiteX-Boards. # # Copyright (c) 2021 Antmicro # SPDX-License-Identifier: BSD-2-Clause import os import math import json from migen import * from litex.gen import * from litex_boards.platforms import antmicro_datacenter_ddr4_test_board from litex.soc.cores.clock import * from litex.soc.integration.soc_core import * from litex.soc.integration.soc import SoCRegion from litex.soc.integration.builder import * from litex.soc.cores.led import LedChaser from litex.soc.cores.bitbang import I2CMaster from litex.soc.cores.video import VideoS7HDMIPHY from litedram.modules import MTA18ASF2G72PZ from litedram.phy.s7ddrphy import A7DDRPHY from litedram.init import get_sdram_phy_py_header from litedram.core.controller import ControllerSettings from litedram.common import PhySettings, GeomSettings, TimingSettings from liteeth.phy import LiteEthS7PHYRGMII from litex.soc.cores.hyperbus import HyperRAM from litespi.modules import S25FL128S0 from litespi.opcodes import SpiNorFlashOpCodes as Codes # CRG ---------------------------------------------------------------------------------------------- class _CRG(LiteXModule): def __init__(self, platform, sys_clk_freq, iodelay_clk_freq, with_video_pll=False): self.rst = Signal() self.cd_sys = ClockDomain() self.cd_sys2x = ClockDomain() self.cd_sys4x = ClockDomain() self.cd_sys4x_dqs = ClockDomain() self.cd_idelay = ClockDomain() self.cd_hdmi = ClockDomain() self.cd_hdmi5x = ClockDomain() # # # # Clk. clk100 = platform.request("clk100") self.pll = pll = S7PLL(speedgrade=-1) self.comb += pll.reset.eq(self.rst) pll.register_clkin(clk100, 100e6) pll.create_clkout(self.cd_sys, sys_clk_freq) pll.create_clkout(self.cd_sys2x, 2 * 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, iodelay_clk_freq) self.idelayctrl = S7IDELAYCTRL(self.cd_idelay) # Video PLL. if with_video_pll: self.video_pll = video_pll = S7MMCM(speedgrade=-1) self.comb += video_pll.reset.eq(self.rst) video_pll.register_clkin(clk100, 100e6) video_pll.create_clkout(self.cd_hdmi, 40e6) video_pll.create_clkout(self.cd_hdmi5x, 5*40e6) # BaseSoC ------------------------------------------------------------------------------------------ class BaseSoC(SoCCore): def __init__(self, *, sys_clk_freq=100e6, iodelay_clk_freq=200e6, with_ethernet = False, with_etherbone = False, eth_ip = "192.168.1.50", eth_reset_time = "10e-3", eth_dynamic_ip = False, with_hyperram = False, with_sdcard = False, with_spi_flash = False, with_led_chaser = True, with_video_terminal = False, with_video_framebuffer = False, **kwargs): platform = antmicro_datacenter_ddr4_test_board.Platform() # CRG -------------------------------------------------------------------------------------- with_video_pll = (with_video_terminal or with_video_framebuffer) self.crg = _CRG(platform, sys_clk_freq, iodelay_clk_freq=iodelay_clk_freq, with_video_pll=with_video_pll) # SoCCore ---------------------------------------------------------------------------------- SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on data center test board", **kwargs) # DDR4 SDRAM RDIMM ------------------------------------------------------------------------- if not self.integrated_main_ram_size: self.ddrphy = A7DDRPHY(platform.request("ddr4"), memtype = "DDR4", iodelay_clk_freq = iodelay_clk_freq, sys_clk_freq = sys_clk_freq, is_rdimm = True, ) self.add_sdram("sdram", phy = self.ddrphy, module = MTA18ASF2G72PZ(sys_clk_freq, "1:4"), l2_cache_size = kwargs.get("l2_size", 8192), l2_cache_min_data_width = 256, size = 0x40000000, ) # HyperRAM --------------------------------------------------------------------------------- if with_hyperram: self.hyperram = HyperRAM(platform.request("hyperram"), sys_clk_freq=sys_clk_freq) self.bus.add_slave("hyperram", slave=self.hyperram.bus, region=SoCRegion(origin=0x20000000, size=8*1024*1024)) # SD Card ---------------------------------------------------------------------------------- if with_sdcard: self.add_sdcard() # Ethernet / Etherbone --------------------------------------------------------------------- if with_ethernet or with_etherbone: # Traces between PHY and FPGA introduce ignorable delays of ~0.165ns +/- 0.015ns. # PHY chip does not introduce delays on TX (FPGA->PHY), however it includes 1.2ns # delay for RX CLK so we only need 0.8ns to match the desired 2ns. self.ethphy = LiteEthS7PHYRGMII( clock_pads = self.platform.request("eth_clocks"), pads = self.platform.request("eth"), rx_delay = 0.8e-9, hw_reset_cycles = math.ceil(float(eth_reset_time) * self.sys_clk_freq) ) if with_ethernet: self.add_ethernet(phy=self.ethphy, dynamic_ip=eth_dynamic_ip) 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="800x600@60Hz", clock_domain="hdmi") if with_video_framebuffer: self.add_video_framebuffer(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi") # SPI Flash -------------------------------------------------------------------------------- if with_spi_flash: self.add_spi_flash(mode="4x", module=S25FL128S0(Codes.READ_1_1_4), with_master=True) # System I2C (behing multiplexer) ---------------------------------------------------------- i2c_pads = platform.request('i2c') self.i2c = I2CMaster(i2c_pads) def generate_sdram_phy_py_header(self, output_file): os.makedirs(os.path.dirname(output_file), exist_ok=True) f = open(output_file, "w") f.write(get_sdram_phy_py_header( self.sdram.controller.settings.phy, self.sdram.controller.settings.timing)) f.close() # Build -------------------------------------------------------------------------------------------- class LiteDRAMSettingsEncoder(json.JSONEncoder): def default(self, o): if isinstance(o, (ControllerSettings, GeomSettings, PhySettings, TimingSettings)): ignored = ["self", "refresh_cls"] return {k: v for k, v in vars(o).items() if k not in ignored} elif isinstance(o, Signal) and isinstance(o.reset, Constant): return o.reset elif isinstance(o, Constant): return o.value print('o', end=' = '); __import__('pprint').pprint(o) return super().default(o) def main(): from litex.build.parser import LiteXArgumentParser parser = LiteXArgumentParser(platform=antmicro_datacenter_ddr4_test_board.Platform, description="LiteX SoC on DDR4 Datacenter Test Board.") parser.add_target_argument("--flash", action="store_true", help="Flash bitstream.") parser.add_target_argument("--sys-clk-freq", default=100e6, type=float, help="System clock frequency.") parser.add_target_argument("--iodelay-clk-freq", default=200e6, type=float, help="IODELAYCTRL frequency.") ethopts = parser.target_group.add_mutually_exclusive_group() ethopts.add_argument("--with-ethernet", action="store_true", help="Add Ethernet.") ethopts.add_argument("--with-etherbone", action="store_true", help="Add EtherBone.") parser.add_target_argument("--eth-ip", default="192.168.1.50", help="Ethernet/Etherbone IP address.") parser.add_target_argument("--eth-dynamic-ip", action="store_true", help="Enable dynamic Ethernet IP addresses setting.") parser.add_target_argument("--eth-reset-time", default="10e-3", help="Duration of Ethernet PHY reset.") parser.add_target_argument("--with-hyperram", action="store_true", help="Add HyperRAM.") parser.add_target_argument("--with-sdcard", action="store_true", help="Add SDCard.") parser.add_target_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI).") parser.add_target_argument("--with-video-framebuffer", action="store_true", help="Enable Video Framebuffer (HDMI).") parser.add_target_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed).") args = parser.parse_args() assert not (args.with_etherbone and args.eth_dynamic_ip) soc = BaseSoC( sys_clk_freq = args.sys_clk_freq, iodelay_clk_freq = args.iodelay_clk_freq, with_ethernet = args.with_ethernet, with_etherbone = args.with_etherbone, eth_ip = args.eth_ip, eth_dynamic_ip = args.eth_dynamic_ip, with_hyperram = args.with_hyperram, with_sdcard = args.with_sdcard, with_spi_flash = args.with_spi_flash, with_video_terminal = args.with_video_terminal, with_video_framebuffer = args.with_video_framebuffer, **parser.soc_argdict) builder = Builder(soc, **parser.builder_argdict) if args.build: builder.build(**parser.toolchain_argdict) builder.soc.generate_sdram_phy_py_header(os.path.join(builder.output_dir, "sdram_init.py")) # LiteDRAM settings (controller, phy, geom, timing) with open(os.path.join(builder.output_dir, 'litedram_settings.json'), 'w') as f: json.dump(builder.soc.sdram.controller.settings, f, cls=LiteDRAMSettingsEncoder, indent=4) if args.load: prog = soc.platform.create_programmer() prog.load_bitstream(builder.get_bitstream_filename(mode="sram")) if args.flash: prog = soc.platform.create_programmer() prog.flash(0, builder.get_bitstream_filename(mode="flash")) if __name__ == "__main__": main()