193 lines
7.7 KiB
Python
Executable File
193 lines
7.7 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
#
|
|
# This file is part of LiteX-Boards.
|
|
#
|
|
# Copyright (c) 2015-2019 Florent Kermarrec <florent@enjoy-digital.fr>
|
|
# Copyright (c) 2020 Antmicro <www.antmicro.com>
|
|
# Copyright (c) 2022 Victor Suarez Rovere <suarezvictor@gmail.com>
|
|
# Copyright (c) 2024 Lone Dynamics Corporation <info@lonedynamics.com>
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause
|
|
#
|
|
|
|
import os
|
|
import sys
|
|
import json
|
|
|
|
from migen import *
|
|
|
|
from litex.gen import *
|
|
|
|
from litex_boards.platforms import machdyne_mozart_mx2
|
|
|
|
from litex.build.io import DDROutput
|
|
|
|
from migen.genlib.resetsync import AsyncResetSynchronizer
|
|
|
|
from litex.soc.cores.clock import *
|
|
from litex.soc.cores.usb_ohci import USBOHCI
|
|
from litex.soc.cores.video import VideoS7HDMIPHY
|
|
|
|
from litex.soc.integration.soc_core import *
|
|
from litex.soc.integration.builder import *
|
|
from litex.soc.interconnect.csr_eventmanager import *
|
|
|
|
from litedram.phy import s7ddrphy
|
|
from litedram.modules import MT41J256M16
|
|
|
|
from litex.soc.integration.soc import SoCRegion
|
|
|
|
# CRG ---------------------------------------------------------------------------------------------
|
|
|
|
class _CRG(LiteXModule):
|
|
def __init__(self, platform, sys_clk_freq):
|
|
self.rst = Signal()
|
|
self.cd_por = ClockDomain()
|
|
self.cd_sys = ClockDomain()
|
|
self.cd_sys2x = ClockDomain()
|
|
self.cd_sys4x = ClockDomain()
|
|
self.cd_sys4x_dqs = ClockDomain()
|
|
self.cd_init = ClockDomain()
|
|
self.cd_eth = ClockDomain()
|
|
self.cd_video = ClockDomain()
|
|
self.cd_video5x = ClockDomain()
|
|
self.cd_idelay = ClockDomain()
|
|
self.cd_usb_12 = ClockDomain()
|
|
self.cd_usb = ClockDomain()
|
|
self.cd_usb_48 = ClockDomain()
|
|
|
|
|
|
self.stop = Signal()
|
|
self.reset = Signal()
|
|
|
|
# Clk / Rst
|
|
clk48 = platform.request("clk48")
|
|
clk50 = platform.request("clk50")
|
|
|
|
# Power on reset
|
|
por_count = Signal(16, reset=2**16-1)
|
|
por_done = Signal()
|
|
self.comb += self.cd_por.clk.eq(clk48)
|
|
self.comb += por_done.eq(por_count == 0)
|
|
self.sync.por += If(~por_done, por_count.eq(por_count - 1))
|
|
|
|
# PLL
|
|
self.pll = pll = S7PLL()
|
|
self.comb += pll.reset.eq(~por_done | self.rst)
|
|
pll.register_clkin(clk50, 50e6)
|
|
pll.create_clkout(self.cd_sys, sys_clk_freq)
|
|
pll.create_clkout(self.cd_sys2x, 2*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)
|
|
|
|
self.pll2 = pll2 = S7PLL()
|
|
pll2.register_clkin(clk50, 50e6)
|
|
pll2.create_clkout(self.cd_eth, 50e6)
|
|
pll2.create_clkout(self.cd_video, 25e6)
|
|
pll2.create_clkout(self.cd_video5x, 125e6)
|
|
|
|
self.cd_usb_48 = self.cd_usb
|
|
|
|
self.pll3 = pll3 = S7PLL()
|
|
self.comb += pll3.reset.eq(~por_done)
|
|
pll3.register_clkin(clk48, 48e6)
|
|
pll3.create_clkout(self.cd_usb, 48e6)
|
|
pll3.create_clkout(self.cd_usb_12, 12e6)
|
|
|
|
# BaseSoC ------------------------------------------------------------------------------------------
|
|
|
|
class BaseSoC(SoCCore):
|
|
mem_map = {**SoCCore.mem_map, **{
|
|
"usb_ohci": 0xc0000000,
|
|
}}
|
|
def __init__(self, revision="v0", variant="a7-35", toolchain="vivado", sys_clk_freq=int(75e6), with_usb_host=False, with_ethernet=False, with_xadc=False, **kwargs):
|
|
platform = machdyne_mozart_mx2.Platform(revision=revision, variant=variant, toolchain=toolchain)
|
|
|
|
# CRG --------------------------------------------------------------------------------------
|
|
self.crg = _CRG(platform, sys_clk_freq)
|
|
|
|
# SoCCore ----------------------------------------------------------------------------------
|
|
SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on Mozart MX1", **kwargs)
|
|
|
|
# DRAM -------------------------------------------------------------------------------------
|
|
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 = MT41J256M16(sys_clk_freq, "1:4"),
|
|
l2_cache_size = kwargs.get("l2_size", 8192)
|
|
)
|
|
|
|
# XADC -------------------------------------------------------------------------------------
|
|
if with_xadc:
|
|
self.xadc = XADC()
|
|
|
|
# SPI Flash --------------------------------------------------------------------------------
|
|
from litespi.modules import W25Q32
|
|
from litespi.opcodes import SpiNorFlashOpCodes as Codes
|
|
self.add_spi_flash(mode="4x", module=W25Q32(Codes.READ_1_1_1), with_master=False)
|
|
|
|
# DDMI Framebuffer -------------------------------------------------------------------------------------
|
|
self.videophy = VideoS7HDMIPHY(platform.request("ddmi"), clock_domain="video")
|
|
self.add_video_framebuffer(phy=self.videophy, timings="640x480@60Hz", clock_domain="video", format="rgb565")
|
|
|
|
# USB Host ---------------------------------------------------------------------------------
|
|
if with_usb_host:
|
|
self.usb_ohci = USBOHCI(platform, platform.request("usb_host"), usb_clk_freq=int(48e6))
|
|
self.bus.add_slave("usb_ohci_ctrl", self.usb_ohci.wb_ctrl, region=SoCRegion(origin=self.mem_map["usb_ohci"], size=0x100000, cached=False))
|
|
self.dma_bus.add_master("usb_ohci_dma", master=self.usb_ohci.wb_dma)
|
|
self.comb += self.cpu.interrupt[16].eq(self.usb_ohci.interrupt)
|
|
|
|
# Ethernet ---------------------------------------------------------------------------------
|
|
if with_ethernet:
|
|
from liteeth.phy.rmii import LiteEthPHYRMII
|
|
self.ethphy = LiteEthPHYRMII(
|
|
clock_pads = None,
|
|
pads = platform.request("eth"),
|
|
with_hw_init_reset = True,
|
|
refclk_cd = "eth")
|
|
self.add_ethernet(phy=self.ethphy)
|
|
|
|
# Build --------------------------------------------------------------------------------------------
|
|
|
|
def main():
|
|
from litex.build.parser import LiteXArgumentParser
|
|
parser = LiteXArgumentParser(platform=machdyne_mozart_mx2.Platform, description="LiteX SoC on Mozart MX2.")
|
|
parser.add_argument("--sys-clk-freq", default=75e6, help="System clock frequency.")
|
|
parser.add_argument("--revision", default="v0", help="Board Revision (v0).")
|
|
parser.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.")
|
|
parser.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.")
|
|
parser.add_argument("--with-usb-host", action="store_true", help="Enable USB host support.")
|
|
parser.add_argument("--with-ethernet", action="store_true", help="Enable ethernet support.")
|
|
|
|
args = parser.parse_args()
|
|
|
|
soc = BaseSoC(
|
|
toolchain = args.toolchain,
|
|
revision = args.revision,
|
|
sys_clk_freq = int(float(args.sys_clk_freq)),
|
|
with_usb_host = args.with_usb_host,
|
|
with_ethernet = args.with_ethernet,
|
|
**parser.soc_argdict)
|
|
|
|
if args.with_sdcard:
|
|
soc.add_sdcard()
|
|
|
|
if args.with_spi_sdcard:
|
|
soc.add_spi_sdcard()
|
|
|
|
builder = Builder(soc, **parser.builder_argdict)
|
|
|
|
if args.build:
|
|
builder.build(**parser.toolchain_argdict)
|
|
|
|
if __name__ == "__main__":
|
|
main()
|