170 lines
7.1 KiB
Python
Executable File
170 lines
7.1 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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# Copyright (c) 2022 IBM Corp.
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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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from migen import *
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from litex.gen import *
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from litex_boards.platforms import antmicro_artix_dc_scm
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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.led import LedChaser
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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 LiteEthS7PHYRGMII
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from litepcie.phy.s7pciephy import S7PCIEPHY
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# CRG ----------------------------------------------------------------------------------------------
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class _CRG(LiteXModule):
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def __init__(self, platform, sys_clk_freq):
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self.rst = Signal()
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self.cd_sys = ClockDomain()
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self.cd_sys4x = ClockDomain(reset_less=True)
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self.cd_sys4x_dqs = ClockDomain(reset_less=True)
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self.cd_idelay = ClockDomain()
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self.cd_ulpi0 = ClockDomain()
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self.cd_ulpi1 = ClockDomain()
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# ulpi0 clock domain (60MHz from ulpi0)
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self.comb += self.cd_ulpi0.clk.eq(platform.request("ulpi_clock", 0))
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# ulpi1 clock domain (60MHz from ulpi1)
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self.comb += self.cd_ulpi1.clk.eq(platform.request("ulpi_clock", 1))
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# # #
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self.pll = pll = S7PLL(speedgrade=-1)
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# self.comb += pll.reset.eq(~platform.request("cpu_reset") | self.rst)
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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_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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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, *, device, toolchain="vivado", sys_clk_freq=100e6,
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with_pcie = False,
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with_etherbone = False,
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with_ethernet = False,
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eth_dynamic_ip = False,
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eth_reset_time = "10e-3",
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eth_ip = "192.168.1.120",
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**kwargs):
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platform = antmicro_artix_dc_scm.Platform(device=device, toolchain=toolchain)
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# CRG --------------------------------------------------------------------------------------
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self.crg = _CRG(platform, sys_clk_freq)
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# SoCCore ----------------------------------------------------------------------------------
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SoCCore.__init__(self, platform, sys_clk_freq, ident = "LiteX SoC on Artix DC-SCM", **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 = 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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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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platform.add_platform_command("set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets main_ethphy_eth_rx_clk_ibuf]")
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# PCIe -------------------------------------------------------------------------------------
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if with_pcie:
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self.pcie_phy = S7PCIEPHY(platform, platform.request("pcie_x1"),
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data_width = 128,
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bar0_size = 0x20000)
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self.add_pcie(phy=self.pcie_phy, ndmas=1)
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# Leds -------------------------------------------------------------------------------------
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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_artix_dc_scm.Platform, description="LiteX SoC on Artix DC-SCM.")
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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("--device", default="xc7a100tfgg484-1", choices=["xc7a100tfgg484-1", "xc7a15tfgg484-1"])
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parser.add_target_argument("--with-pcie", action="store_true", help="Add PCIe.")
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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-sdram", action="store_true", help="Add SDRAM.")
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parser.add_target_argument("--with-emmc", action="store_true", help="Add eMMC.")
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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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toolchain = args.toolchain,
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device = args.device,
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sys_clk_freq = args.sys_clk_freq,
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with_pcie = args.with_pcie,
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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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eth_reset_time = args.eth_reset_time,
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**parser.soc_argdict
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)
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if args.with_emmc:
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soc.add_sdcard(software_debug=False)
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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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