154 lines
6.8 KiB
Python
Executable File
154 lines
6.8 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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from migen import *
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from litex.gen import *
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from litex_boards.platforms import antmicro_lpddr4_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 litedram.modules import MT53E256M16D1
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from litedram.phy import lpddr4
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from liteeth.phy import LiteEthS7PHYRGMII
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from litex.soc.cores.hyperbus import HyperRAM
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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):
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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_sys8x = ClockDomain()
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self.cd_idelay = ClockDomain()
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# # #
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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(platform.request("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_sys8x, 8 * sys_clk_freq)
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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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# BaseSoC ------------------------------------------------------------------------------------------
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class BaseSoC(SoCCore):
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def __init__(self, *, sys_clk_freq=50e6, 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_dynamic_ip = False,
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with_hyperram = False,
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with_sdcard = False,
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with_led_chaser = True,
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**kwargs):
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platform = antmicro_lpddr4_test_board.Platform()
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# CRG --------------------------------------------------------------------------------------
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self.crg = _CRG(platform, sys_clk_freq, iodelay_clk_freq=iodelay_clk_freq)
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# SoCCore ----------------------------------------------------------------------------------
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SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on LPDDR4 Test Board", **kwargs)
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# LDDR4 SDRAM ------------------------------------------------------------------------------
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if not self.integrated_main_ram_size:
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self.ddrphy = lpddr4.K7LPDDR4PHY(platform.request("lpddr4"),
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iodelay_clk_freq = iodelay_clk_freq,
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sys_clk_freq = sys_clk_freq,
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)
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self.add_sdram("sdram",
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phy = self.ddrphy,
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module = MT53E256M16D1(sys_clk_freq, "1:8"),
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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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)
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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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)
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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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# Build --------------------------------------------------------------------------------------------
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def main():
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from litex.build.parser import LiteXArgumentParser
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parser = LiteXArgumentParser(platform=antmicro_lpddr4_test_board.Platform, description="LiteX SoC on LPDDR4 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=50e6, 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("--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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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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**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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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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