#!/usr/bin/env python3 # # This file is part of LiteX-Boards. # # Copyright (c) 2014-2015 Sebastien Bourdeauducq # Copyright (c) 2014-2020 Florent Kermarrec # Copyright (c) 2014-2015 Yann Sionneau # SPDX-License-Identifier: BSD-2-Clause import os from migen import * from litex.gen import * from litex_boards.platforms import xilinx_kc705 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 MT8JTF12864 from litedram.phy import s7ddrphy from liteeth.phy import LiteEthPHY from litepcie.phy.s7pciephy import S7PCIEPHY from litepcie.software import generate_litepcie_software # CRG ---------------------------------------------------------------------------------------------- class _CRG(LiteXModule): def __init__(self, platform, sys_clk_freq): self.rst = Signal() self.cd_sys = ClockDomain() self.cd_sys4x = ClockDomain() self.cd_idelay = ClockDomain() # # # self.pll = pll = S7MMCM(speedgrade=-2) self.comb += pll.reset.eq(platform.request("cpu_reset") | self.rst) pll.register_clkin(platform.request("clk200"), 200e6) pll.create_clkout(self.cd_sys, sys_clk_freq) pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq) pll.create_clkout(self.cd_idelay, 200e6) platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst. self.idelayctrl = S7IDELAYCTRL(self.cd_idelay) # BaseSoC ------------------------------------------------------------------------------------------ class BaseSoC(SoCCore): def __init__(self, sys_clk_freq=125e6, with_ethernet = False, with_led_chaser = True, with_spi_flash = False, with_pcie = False, with_sata = False, **kwargs): platform = xilinx_kc705.Platform() # CRG -------------------------------------------------------------------------------------- self.crg = _CRG(platform, sys_clk_freq) # SoCCore ---------------------------------------------------------------------------------- SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on KC705", **kwargs) # DDR3 SDRAM ------------------------------------------------------------------------------- if not self.integrated_main_ram_size: self.ddrphy = s7ddrphy.K7DDRPHY(platform.request("ddram"), memtype = "DDR3", nphases = 4, sys_clk_freq = sys_clk_freq) self.add_sdram("sdram", phy = self.ddrphy, module = MT8JTF12864(sys_clk_freq, "1:4"), l2_cache_size = kwargs.get("l2_size", 8192) ) # Ethernet --------------------------------------------------------------------------------- if with_ethernet: self.ethphy = LiteEthPHY( clock_pads = self.platform.request("eth_clocks"), pads = self.platform.request("eth"), clk_freq = self.clk_freq) self.add_ethernet(phy=self.ethphy) # SPI Flash -------------------------------------------------------------------------------- if with_spi_flash: from litespi.modules import N25Q128A13 from litespi.opcodes import SpiNorFlashOpCodes as Codes self.add_spi_flash(mode="4x", module=N25Q128A13(Codes.READ_1_1_4), rate="1:1", with_master=True) # PCIe ------------------------------------------------------------------------------------- if with_pcie: self.pcie_phy = S7PCIEPHY(platform, platform.request("pcie_x4"), data_width = 128, bar0_size = 0x20000) self.add_pcie(phy=self.pcie_phy, ndmas=1) # SATA ------------------------------------------------------------------------------------- if with_sata: from litex.build.generic_platform import Subsignal, Pins from litesata.phy import LiteSATAPHY # IOs _sata_io = [ # SFP 2 SATA Adapter / https://shop.trenz-electronic.de/en/TE0424-01-SFP-2-SATA-Adapter ("sfp2sata", 0, Subsignal("tx_p", Pins("H2")), Subsignal("tx_n", Pins("H1")), Subsignal("rx_p", Pins("G4")), Subsignal("rx_n", Pins("G3")), ), ] platform.add_extension(_sata_io) # RefClk, Generate 150MHz from PLL. self.cd_sata_refclk = ClockDomain() self.crg.pll.create_clkout(self.cd_sata_refclk, 150e6) sata_refclk = ClockSignal("sata_refclk") platform.add_platform_command("set_property SEVERITY {{Warning}} [get_drc_checks REQP-52]") # PHY self.sata_phy = LiteSATAPHY(platform.device, refclk = sata_refclk, pads = platform.request("sfp2sata"), gen = "gen2", clk_freq = sys_clk_freq, data_width = 16) # Core self.add_sata(phy=self.sata_phy, mode="read+write") # Leds ------------------------------------------------------------------------------------- if with_led_chaser: 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=xilinx_kc705.Platform, description="LiteX SoC on KC705.") parser.add_target_argument("--sys-clk-freq", default=125e6, type=float, help="System clock frequency.") parser.add_target_argument("--with-ethernet", action="store_true", help="Enable Ethernet support.") parser.add_target_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed).") parser.add_target_argument("--with-pcie", action="store_true", help="Enable PCIe support.") parser.add_target_argument("--driver", action="store_true", help="Generate PCIe driver.") parser.add_target_argument("--with-sata", action="store_true", help="Enable SATA support (over SFP2SATA).") args = parser.parse_args() soc = BaseSoC( sys_clk_freq = args.sys_clk_freq, with_ethernet = args.with_ethernet, with_spi_flash = args.with_spi_flash, with_pcie = args.with_pcie, with_sata = args.with_sata, **parser.soc_argdict ) builder = Builder(soc, **parser.builder_argdict) if args.build: builder.build(**parser.toolchain_argdict) if args.driver: generate_litepcie_software(soc, os.path.join(builder.output_dir, "driver")) if args.load: prog = soc.platform.create_programmer() prog.load_bitstream(builder.get_bitstream_filename(mode="sram")) if __name__ == "__main__": main()