#!/usr/bin/env python3 # # This file is part of LiteX-Boards. # # Copyright (c) 2021 Antmicro # Copyright (c) 2022 IBM Corp. # SPDX-License-Identifier: BSD-2-Clause import os import math from migen import * from litex.gen import LiteXModule from litex_boards.platforms import antmicro_artix_dc_scm from litex.soc.cores.clock import * from litex.soc.integration.soc_core import * from litex.soc.integration.builder import * from litex.soc.cores.led import LedChaser from litedram.modules import MT41K128M16 from litedram.phy import s7ddrphy from liteeth.phy import LiteEthS7PHYRGMII from litepcie.phy.s7pciephy import S7PCIEPHY # CRG ---------------------------------------------------------------------------------------------- class _CRG(LiteXModule): def __init__(self, platform, sys_clk_freq): self.rst = Signal() self.cd_sys = ClockDomain() self.cd_sys4x = ClockDomain(reset_less=True) self.cd_sys4x_dqs = ClockDomain(reset_less=True) self.cd_idelay = ClockDomain() self.cd_ulpi0 = ClockDomain() self.cd_ulpi1 = ClockDomain() # ulpi0 clock domain (60MHz from ulpi0) self.comb += self.cd_ulpi0.clk.eq(platform.request("ulpi_clock", 0)) # ulpi1 clock domain (60MHz from ulpi1) self.comb += self.cd_ulpi1.clk.eq(platform.request("ulpi_clock", 1)) # # # self.pll = pll = S7PLL(speedgrade=-1) # self.comb += pll.reset.eq(~platform.request("cpu_reset") | self.rst) self.comb += pll.reset.eq(self.rst) pll.register_clkin(platform.request("clk100"), 100e6) 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) pll.create_clkout(self.cd_idelay, 200e6) self.idelayctrl = S7IDELAYCTRL(self.cd_idelay) # BaseSoC ------------------------------------------------------------------------------------------ class BaseSoC(SoCCore): def __init__(self, *, device, with_pcie, with_etherbone, with_ethernet, with_sdram, eth_dynamic_ip, eth_reset_time, toolchain="vivado", sys_clk_freq=int(100e6), eth_ip="192.168.1.120", **kwargs): platform = antmicro_artix_dc_scm.Platform(device=device, toolchain=toolchain) # CRG -------------------------------------------------------------------------------------- self.crg = _CRG(platform, sys_clk_freq) # SoCCore ---------------------------------------------------------------------------------- SoCCore.__init__(self, platform, sys_clk_freq, ident = "LiteX SoC on Artix DC-SCM", **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 = LiteEthS7PHYRGMII( clock_pads = self.platform.request("eth_clocks"), pads = self.platform.request("eth"), 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) platform.add_platform_command("set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets main_ethphy_eth_rx_clk_ibuf]") # PCIe ------------------------------------------------------------------------------------- if with_pcie: self.pcie_phy = S7PCIEPHY(platform, platform.request("pcie_x1"), data_width = 128, bar0_size = 0x20000) self.add_pcie(phy=self.pcie_phy, ndmas=1) # Leds ------------------------------------------------------------------------------------- self.leds = LedChaser( pads = platform.request_all("user_led"), sys_clk_freq = sys_clk_freq) # Build -------------------------------------------------------------------------------------------- def main(): from litex.build.parser import LiteXArgumentParser parser = LiteXArgumentParser(platform=antmicro_artix_dc_scm.Platform, description="LiteX SoC on Artix DC-SCM") parser.add_target_argument("--flash", action="store_true", help="Flash bitstream") parser.add_target_argument("--sys-clk-freq", default=100e6, help="System clock frequency.") parser.add_target_argument("--device", default="xc7a100tfgg484-1", choices=["xc7a100tfgg484-1", "xc7a15tfgg484-1"]) parser.add_target_argument("--with-pcie", action="store_true", help="Add PCIe") 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-sdram", action="store_true", help="Add SDRAM") parser.add_target_argument("--with-emmc", action="store_true", help="Add eMMC") args = parser.parse_args() assert not (args.with_etherbone and args.eth_dynamic_ip) soc = BaseSoC( toolchain = args.toolchain, device = args.device, sys_clk_freq = int(float(args.sys_clk_freq)), with_pcie = args.with_pcie, with_ethernet = args.with_ethernet, with_etherbone = args.with_etherbone, eth_ip = args.eth_ip, eth_dynamic_ip = args.eth_dynamic_ip, with_sdram = args.with_sdram, eth_reset_time = args.eth_reset_time, **parser.soc_argdict ) if args.with_emmc: soc.add_sdcard(software_debug=False) 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 args.flash: prog = soc.platform.create_programmer() prog.flash(0, builder.get_bitstream_filename(mode="flash")) if __name__ == "__main__": main()