litex-boards/litex_boards/targets/sitlinv_stlv7325.py

#!/usr/bin/env python3

#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2022 Andrew Gillham <gillham@roadsign.com>
# Copyright (c) 2014-2015 Sebastien Bourdeauducq <sb@m-labs.hk>
# Copyright (c) 2014-2020 Florent Kermarrec <florent@enjoy-digital.fr>
# Copyright (c) 2014-2015 Yann Sionneau <ys@m-labs.hk>
# SPDX-License-Identifier: BSD-2-Clause

import os

from migen import *

from litex.gen import *

from litex_boards.platforms import sitlinv_stlv7325

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 litex.soc.cores.bitbang import I2CMaster

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()

        # # #

        # Clk/Rst.
        clk200 = platform.request("clk200")
        rst_n  = platform.request("cpu_reset_n")

        # PLL.
        self.pll = pll = S7PLL(speedgrade=-2)
        self.comb += pll.reset.eq(~rst_n | self.rst)
        pll.register_clkin(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=100e6,
        with_ethernet   = False,
        with_etherbone  = False,
        local_ip        = "192.168.1.50",
        remote_ip       = "",
        eth_dynamic_ip  = False,
        with_led_chaser = True,
        with_pcie       = False,
        with_sata       = False,
        with_jtagbone   = True,
        **kwargs):
        platform = sitlinv_stlv7325.Platform()

        # CRG --------------------------------------------------------------------------------------
        self.crg = _CRG(platform, sys_clk_freq)

        # SoCCore ----------------------------------------------------------------------------------
        SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on Sitlinv STLV7325", **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),
            )

        # Jtagbone ---------------------------------------------------------------------------------
        if with_jtagbone:
            self.add_jtagbone()

        # Ethernet / Etherbone ---------------------------------------------------------------------
        if with_ethernet or with_etherbone:
            self.ethphy = LiteEthPHY(
                clock_pads = self.platform.request("eth_clocks", 0),
                pads       = self.platform.request("eth", 0),
                clk_freq   = self.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)

        if local_ip:
            local_ip = local_ip.split(".")
            self.add_constant("LOCALIP1", int(local_ip[0]))
            self.add_constant("LOCALIP2", int(local_ip[1]))
            self.add_constant("LOCALIP3", int(local_ip[2]))
            self.add_constant("LOCALIP4", int(local_ip[3]))

        if remote_ip:
            remote_ip = remote_ip.split(".")
            self.add_constant("REMOTEIP1", int(remote_ip[0]))
            self.add_constant("REMOTEIP2", int(remote_ip[1]))
            self.add_constant("REMOTEIP3", int(remote_ip[2]))
            self.add_constant("REMOTEIP4", int(remote_ip[3]))

        # 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)

        # TODO verify / test
        # SATA -------------------------------------------------------------------------------------
        if with_sata:
            from litex.build.generic_platform import Subsignal, Pins
            from litesata.phy import LiteSATAPHY

            # 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("sata", 0),
                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_n"),
                sys_clk_freq = sys_clk_freq)

        # I2C --------------------------------------------------------------------------------------
        self.i2c = I2CMaster(platform.request("i2c"))

# Build --------------------------------------------------------------------------------------------

def main():
    from litex.build.parser import LiteXArgumentParser
    parser = LiteXArgumentParser(platform=sitlinv_stlv7325.Platform, description="LiteX SoC on AliExpress STLV7325.")
    parser.add_target_argument("--sys-clk-freq",  default=100e6, type=float, help="System clock frequency.")
    ethopts = parser.target_group.add_mutually_exclusive_group()
    ethopts.add_argument("--with-ethernet",         action="store_true",    help="Enable Ethernet support.")
    ethopts.add_argument("--with-etherbone",        action="store_true",    help="Enable Etherbone support.")
    parser.add_target_argument("--remote-ip",       default="192.168.1.100",help="Remote IP address of TFTP server.")
    parser.add_target_argument("--local-ip",        default="192.168.1.50", help="Local IP address.")
    parser.add_target_argument("--eth-dynamic-ip",  action="store_true",    help="Enable dynamic Ethernet IP addresses setting.")
    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.")
    parser.add_target_argument("--with-jtagbone",   action="store_true",    help="Enable Jtagbone support.")
    sdopts = parser.target_group.add_mutually_exclusive_group()
    sdopts.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.")
    sdopts.add_argument("--with-sdcard",     action="store_true", help="Enable SDCard support.")
    args = parser.parse_args()

    assert not (args.with_etherbone and args.eth_dynamic_ip)

    soc = BaseSoC(
        sys_clk_freq   = args.sys_clk_freq,
        with_ethernet  = args.with_ethernet,
        with_etherbone = args.with_etherbone,
        local_ip       = args.local_ip,
        remote_ip      = args.remote_ip,
        eth_dynamic_ip = args.eth_dynamic_ip,
        with_pcie      = args.with_pcie,
        with_sata      = args.with_sata,
        with_jtagbone  = args.with_jtagbone,
        **parser.soc_argdict
    )
    if args.with_spi_sdcard:
        soc.add_spi_sdcard()
    if args.with_sdcard:
        soc.add_sdcard()
    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()