240 lines
11 KiB
Python
Executable File
240 lines
11 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) 2021 Antmicro <www.antmicro.com>
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# SPDX-License-Identifier: BSD-2-Clause
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import os
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import math
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import json
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from migen import *
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from litex.gen import *
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from litex_boards.platforms import antmicro_datacenter_ddr4_test_board
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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.soc import SoCRegion
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from litex.soc.integration.builder import *
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from litex.soc.cores.led import LedChaser
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from litex.soc.cores.bitbang import I2CMaster
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from litex.soc.cores.video import VideoS7HDMIPHY
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from litedram.modules import MTA18ASF2G72PZ
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from litedram.phy.s7ddrphy import A7DDRPHY
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from litedram.init import get_sdram_phy_py_header
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from litedram.core.controller import ControllerSettings
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from litedram.common import PhySettings, GeomSettings, TimingSettings
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from liteeth.phy import LiteEthS7PHYRGMII
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from litex.soc.cores.hyperbus import HyperRAM
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from litespi.modules import S25FL128S0
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from litespi.opcodes import SpiNorFlashOpCodes as Codes
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# CRG ----------------------------------------------------------------------------------------------
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class _CRG(LiteXModule):
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def __init__(self, platform, sys_clk_freq, iodelay_clk_freq, with_video_pll=False):
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self.rst = Signal()
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self.cd_sys = ClockDomain()
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self.cd_sys2x = 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_hdmi = ClockDomain()
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self.cd_hdmi5x = ClockDomain()
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# # #
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# Clk.
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clk100 = platform.request("clk100")
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self.pll = pll = S7PLL(speedgrade=-1)
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self.comb += pll.reset.eq(self.rst)
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pll.register_clkin(clk100, 100e6)
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pll.create_clkout(self.cd_sys, sys_clk_freq)
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pll.create_clkout(self.cd_sys2x, 2 * 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, iodelay_clk_freq)
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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=-1)
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self.comb += video_pll.reset.eq(self.rst)
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video_pll.register_clkin(clk100, 100e6)
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video_pll.create_clkout(self.cd_hdmi, 40e6)
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video_pll.create_clkout(self.cd_hdmi5x, 5*40e6)
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# BaseSoC ------------------------------------------------------------------------------------------
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class BaseSoC(SoCCore):
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def __init__(self, *, sys_clk_freq=100e6, iodelay_clk_freq=200e6,
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with_ethernet = False,
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with_etherbone = False,
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eth_ip = "192.168.1.50",
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eth_reset_time = "10e-3",
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eth_dynamic_ip = False,
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with_hyperram = False,
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with_sdcard = False,
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with_spi_flash = False,
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with_led_chaser = True,
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with_video_terminal = False,
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with_video_framebuffer = False,
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**kwargs):
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platform = antmicro_datacenter_ddr4_test_board.Platform()
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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, sys_clk_freq, iodelay_clk_freq=iodelay_clk_freq, with_video_pll=with_video_pll)
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# SoCCore ----------------------------------------------------------------------------------
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SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on data center test board", **kwargs)
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# DDR4 SDRAM RDIMM -------------------------------------------------------------------------
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if not self.integrated_main_ram_size:
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self.ddrphy = A7DDRPHY(platform.request("ddr4"),
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memtype = "DDR4",
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iodelay_clk_freq = iodelay_clk_freq,
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sys_clk_freq = sys_clk_freq,
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is_rdimm = True,
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)
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self.add_sdram("sdram",
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phy = self.ddrphy,
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module = MTA18ASF2G72PZ(sys_clk_freq, "1:4"),
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l2_cache_size = kwargs.get("l2_size", 8192),
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l2_cache_min_data_width = 256,
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size = 0x40000000,
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)
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# HyperRAM ---------------------------------------------------------------------------------
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if with_hyperram:
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self.hyperram = HyperRAM(platform.request("hyperram"), sys_clk_freq=sys_clk_freq)
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self.bus.add_slave("hyperram", slave=self.hyperram.bus, region=SoCRegion(origin=0x20000000, size=8*1024*1024))
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# SD Card ----------------------------------------------------------------------------------
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if with_sdcard:
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self.add_sdcard()
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# Ethernet / Etherbone ---------------------------------------------------------------------
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if with_ethernet or with_etherbone:
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# Traces between PHY and FPGA introduce ignorable delays of ~0.165ns +/- 0.015ns.
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# PHY chip does not introduce delays on TX (FPGA->PHY), however it includes 1.2ns
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# delay for RX CLK so we only need 0.8ns to match the desired 2ns.
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self.ethphy = LiteEthS7PHYRGMII(
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clock_pads = self.platform.request("eth_clocks"),
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pads = self.platform.request("eth"),
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rx_delay = 0.8e-9,
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hw_reset_cycles = math.ceil(float(eth_reset_time) * self.sys_clk_freq)
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)
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if with_ethernet:
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self.add_ethernet(phy=self.ethphy, dynamic_ip=eth_dynamic_ip)
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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="800x600@60Hz", clock_domain="hdmi")
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if with_video_framebuffer:
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self.add_video_framebuffer(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi")
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# SPI Flash --------------------------------------------------------------------------------
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if with_spi_flash:
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self.add_spi_flash(mode="4x", module=S25FL128S0(Codes.READ_1_1_4), with_master=True)
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# System I2C (behing multiplexer) ----------------------------------------------------------
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i2c_pads = platform.request('i2c')
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self.i2c = I2CMaster(i2c_pads)
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def generate_sdram_phy_py_header(self, output_file):
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os.makedirs(os.path.dirname(output_file), exist_ok=True)
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f = open(output_file, "w")
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f.write(get_sdram_phy_py_header(
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self.sdram.controller.settings.phy,
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self.sdram.controller.settings.timing))
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f.close()
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# Build --------------------------------------------------------------------------------------------
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class LiteDRAMSettingsEncoder(json.JSONEncoder):
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def default(self, o):
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if isinstance(o, (ControllerSettings, GeomSettings, PhySettings, TimingSettings)):
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ignored = ["self", "refresh_cls"]
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return {k: v for k, v in vars(o).items() if k not in ignored}
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elif isinstance(o, Signal) and isinstance(o.reset, Constant):
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return o.reset
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elif isinstance(o, Constant):
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return o.value
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print('o', end=' = '); __import__('pprint').pprint(o)
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return super().default(o)
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def main():
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from litex.build.parser import LiteXArgumentParser
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parser = LiteXArgumentParser(platform=antmicro_datacenter_ddr4_test_board.Platform, description="LiteX SoC on DDR4 Datacenter Test Board.")
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parser.add_target_argument("--flash", action="store_true", help="Flash bitstream.")
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parser.add_target_argument("--sys-clk-freq", default=100e6, type=float, help="System clock frequency.")
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parser.add_target_argument("--iodelay-clk-freq", default=200e6, type=float, help="IODELAYCTRL frequency.")
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ethopts = parser.target_group.add_mutually_exclusive_group()
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ethopts.add_argument("--with-ethernet", action="store_true", help="Add Ethernet.")
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ethopts.add_argument("--with-etherbone", action="store_true", help="Add EtherBone.")
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parser.add_target_argument("--eth-ip", default="192.168.1.50", help="Ethernet/Etherbone IP address.")
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parser.add_target_argument("--eth-dynamic-ip", action="store_true", help="Enable dynamic Ethernet IP addresses setting.")
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parser.add_target_argument("--eth-reset-time", default="10e-3", help="Duration of Ethernet PHY reset.")
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parser.add_target_argument("--with-hyperram", action="store_true", help="Add HyperRAM.")
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parser.add_target_argument("--with-sdcard", action="store_true", help="Add SDCard.")
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parser.add_target_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI).")
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parser.add_target_argument("--with-video-framebuffer", action="store_true", help="Enable Video Framebuffer (HDMI).")
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parser.add_target_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed).")
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args = parser.parse_args()
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assert not (args.with_etherbone and args.eth_dynamic_ip)
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soc = BaseSoC(
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sys_clk_freq = args.sys_clk_freq,
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iodelay_clk_freq = args.iodelay_clk_freq,
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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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eth_dynamic_ip = args.eth_dynamic_ip,
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with_hyperram = args.with_hyperram,
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with_sdcard = args.with_sdcard,
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with_spi_flash = args.with_spi_flash,
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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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**parser.soc_argdict)
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builder = Builder(soc, **parser.builder_argdict)
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if args.build:
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builder.build(**parser.toolchain_argdict)
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builder.soc.generate_sdram_phy_py_header(os.path.join(builder.output_dir, "sdram_init.py"))
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# LiteDRAM settings (controller, phy, geom, timing)
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with open(os.path.join(builder.output_dir, 'litedram_settings.json'), 'w') as f:
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json.dump(builder.soc.sdram.controller.settings, f, cls=LiteDRAMSettingsEncoder, indent=4)
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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 args.flash:
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prog = soc.platform.create_programmer()
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prog.flash(0, builder.get_bitstream_filename(mode="flash"))
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if __name__ == "__main__":
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main()
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