656 lines
45 KiB
Python
Executable File
656 lines
45 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) 2024 Dolu1990 <charles.papon.90@gmail.com>
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# SPDX-License-Identifier: BSD-2-Clause
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from migen import *
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from migen.genlib.resetsync import AsyncResetSynchronizer
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from litex.gen import *
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from litex.build.io import DDROutput, SDROutput, SDRTristate
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from litex.build.generic_platform import Subsignal, Pins, Misc, IOStandard
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from litex_boards.platforms import efinix_ti375_c529_dev_kit
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from litex.soc.integration.soc_core import *
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from litex.soc.integration.soc import SoCRegion
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from litex.soc.integration.builder import *
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from litex.soc.interconnect import axi
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from litex.soc.cores.clock import *
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from litex.soc.cores.led import LedChaser
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from litex.soc.cores.bitbang import I2CMaster
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from litex.soc.cores.pwm import PWM
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from litex.soc.cores.usb_ohci import USBOHCI
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from liteeth.phy.trionrgmii import LiteEthPHYRGMII
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# Full stream debian demo :
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# --cpu-type=vexiiriscv --cpu-variant=debian --update-repo=no --with-jtag-tap --with-sdcard --with-coherent-dma --with-ohci --vexii-video "name=video"
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# --vexii-args="--fetch-l1-hardware-prefetch=nl --fetch-l1-refill-count=2 --fetch-l1-mem-data-width-min=128 --lsu-l1-mem-data-width-min=128 --lsu-software-prefetch --lsu-hardware-prefetch rpt --performance-counters 9 --lsu-l1-store-buffer-ops=32 --lsu-l1-refill-count 4 --lsu-l1-writeback-count 4 --lsu-l1-store-buffer-slots=4 --relaxed-div"
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# --l2-bytes=524288 --sys-clk-freq 100000000 --cpu-clk-freq 200000000 --with-cpu-clk --bus-standard axi-lite --cpu-count=4 --build
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# CRG ----------------------------------------------------------------------------------------------
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class _CRG(LiteXModule):
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def __init__(self, platform, sys_clk_freq, cpu_clk_freq):
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#self.rst = Signal()
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self.cd_sys = ClockDomain()
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self.cd_usb = ClockDomain()
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self.cd_video = ClockDomain()
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self.cd_cpu = ClockDomain()
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# # #
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# Clk/Rst.
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clk100 = platform.request("clk100")
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rst_n = platform.request("user_btn", 0)
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# PLL.
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self.pll = pll = TITANIUMPLL(platform)
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self.comb += pll.reset.eq(~rst_n)
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pll.register_clkin(clk100, 100e6)
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# You can use CLKOUT0 only for clocks with a maximum frequency of 4x
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# (integer) of the reference clock. If all your system clocks do not fall within
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# this range, you should dedicate one unused clock for CLKOUT0.
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pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True)
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pll.create_clkout(self.cd_cpu, cpu_clk_freq)
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pll.create_clkout(self.cd_usb, 60e6, margin=0)
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pll.create_clkout(None, 800e6) # LPDDR4 ctrl
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pll.create_clkout(self.cd_video, 40e6)
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platform.add_false_path_constraints(self.cd_cpu.clk, self.cd_usb.clk)
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platform.add_false_path_constraints(self.cd_cpu.clk, self.cd_sys.clk)
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platform.add_false_path_constraints(self.cd_cpu.clk, self.cd_video.clk)
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platform.add_false_path_constraints(self.cd_sys.clk, self.cd_usb.clk)
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# BaseSoC ------------------------------------------------------------------------------------------
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class BaseSoC(SoCCore):
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mem_map = {**SoCCore.mem_map, **{
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"usb_ohci": 0xe0000000,
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}}
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def __init__(self, sys_clk_freq=100e6, cpu_clk_freq=100e6, with_ohci=False, **kwargs):
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platform = efinix_ti375_c529_dev_kit.Platform()
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# CRG --------------------------------------------------------------------------------------
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self.crg = _CRG(platform, sys_clk_freq, cpu_clk_freq)
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# SoCCore ----------------------------------------------------------------------------------
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SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on Efinix Ti375 C529 Dev Kit", **kwargs)
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if hasattr(self.cpu, "cpu_clk"):
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self.comb += self.cpu.cpu_clk.eq(self.crg.cd_cpu.clk)
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# Fan --------------------------------------------------------------------------------------
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self.fan_pwm = PWM(
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pwm=platform.request("fan_speed_control", 0),
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with_csr = True,
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default_enable = 1,
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default_width = 0x800,
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default_period = 0xfff,
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)
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# USB OHCI ---------------------------------------------------------------------------------
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if with_ohci:
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_usb_pmod_ios = [
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("usb_pmod1", 0,
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Subsignal("dp", Pins("pmod1:0", "pmod1:1", "pmod1:2", "pmod1:3")),
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Subsignal("dm", Pins("pmod1:4", "pmod1:5", "pmod1:6", "pmod1:7")),
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IOStandard("3.3_V_LVCMOS"), Misc("DRIVE_STRENGTH=8"),
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)
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]
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platform.add_extension(_usb_pmod_ios)
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self.submodules.usb_ohci = USBOHCI(platform, platform.request("usb_pmod1"), usb_clk_freq=int(60e6))
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self.bus.add_slave("usb_ohci_ctrl", self.usb_ohci.wb_ctrl, region=SoCRegion(origin=self.mem_map["usb_ohci"], size=0x100000, cached=False))
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self.dma_bus.add_master("usb_ohci_dma", master=self.usb_ohci.wb_dma)
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self.comb += self.cpu.interrupt[16].eq(self.usb_ohci.interrupt)
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# JTAG -------------------------------------------------------------------------------------
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if hasattr(self.cpu, "jtag_clk"):
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_jtag_io = [
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("jtag", 0,
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Subsignal("tck", Pins("pmod0:0")),
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Subsignal("tdi", Pins("pmod0:1")),
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Subsignal("tdo", Pins("pmod0:2")),
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Subsignal("tms", Pins("pmod0:3")),
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IOStandard("3.3_V_LVCMOS"),
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)
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]
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self.platform.add_extension(_jtag_io)
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jtag_pads = platform.request("jtag")
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self.comb += [
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self.cpu.jtag_clk.eq(jtag_pads.tck),
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self.cpu.jtag_tms.eq(jtag_pads.tms),
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self.cpu.jtag_tdi.eq(jtag_pads.tdi),
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jtag_pads.tdo.eq(self.cpu.jtag_tdo),
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]
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platform.add_false_path_constraints(self.crg.cd_sys.clk, jtag_pads.tck)
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# HDMI -------------------------------------------------------------------------------------
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if hasattr(self.cpu, "video_clk"):
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_hdmi_io = efinix_ti375_c529_dev_kit.hdmi_px("p1")
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self.platform.add_extension(_hdmi_io)
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self.submodules.videoi2c = I2CMaster(platform.request("hdmi_i2c"))
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self.videoi2c.add_init(addr=0x72>>1, init=[
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# # video input/output mode
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(0xD6, 0xC0),
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(0x15, 0x01),
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(0x16, 0x38),
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(0x18, 0xE7),
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(0x19, 0x34),
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(0x1A, 0x04),
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(0x1B, 0xAD),
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(0x1C, 0x00),
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(0x1D, 0x00),
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(0x1E, 0x1C),
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(0x1F, 0x1B),
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(0x20, 0x1D),
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(0x21, 0xDC),
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(0x22, 0x04),
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(0x23, 0xAD),
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(0x24, 0x1F),
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(0x25, 0x24),
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(0x26, 0x01),
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(0x27, 0x35),
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(0x28, 0x00),
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(0x29, 0x00),
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(0x2A, 0x04),
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(0x2B, 0xAD),
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(0x2C, 0x08),
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(0x2D, 0x7C),
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(0x2E, 0x1B),
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(0x2F, 0x77),
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(0x41, 0x10),
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(0x48, 0x08), # (right justified
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(0x55, 0x00),
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(0x56, 0x28),
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(0x96, 0xC0),
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(0x98, 0x03),
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(0x9A, 0xE0),
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(0x9C, 0x30),
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(0x9D, 0x61),
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(0xA2, 0xA4),
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(0xA3, 0xA4),
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(0xAF, 0x06),
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(0xBA, 0x60),
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(0xD6, 0xC0),
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(0xE0, 0xD0),
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(0xDF, 0x01),
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(0x9A, 0xE0),
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(0xFD, 0xE0),
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(0xFE, 0x80),
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(0xF9, 0x00),
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(0x7F, 0x00),
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(0x94, 0x00),
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(0xE2, 0x01),
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(0x41, 0x10),
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])
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clk_video = self.crg.cd_video.clk
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self.comb += self.cpu.video_clk.eq(self.crg.cd_video.clk)
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video_data = platform.request("hdmi_data")
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self.specials += DDROutput(i1=Signal(reset=0b0), i2=Signal(reset=0b1), o=video_data.clk, clk=clk_video)
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self.specials += DDROutput(i1=self.cpu.video_color_en, i2=self.cpu.video_color_en, o=video_data.de, clk=clk_video)
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for i in range(self.cpu.video_color.nbits):
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self.specials += DDROutput(i1=self.cpu.video_color[i], i2=self.cpu.video_color[i], o=video_data.d[i], clk=clk_video)
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video_sync = platform.request("hdmi_sync")
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self.specials += SDRTristate(io=video_sync.vsync, o=Signal(reset=0b0), oe=self.cpu.video_vsync, i=Signal(), clk=clk_video)
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self.specials += SDRTristate(io=video_sync.hsync, o=Signal(reset=0b0), oe=self.cpu.video_hsync, i=Signal(), clk=clk_video)
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# _debug_io = [
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# ("debug_io", 0,
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# Subsignal("p0", Pins("pmod2:0")),
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# Subsignal("p1", Pins("pmod2:1")),
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# Subsignal("p2", Pins("pmod2:2")),
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# Subsignal("p3", Pins("pmod2:3")),
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# Subsignal("p4", Pins("pmod2:4")),
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# Subsignal("p5", Pins("pmod2:5")),
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# Subsignal("p6", Pins("pmod2:6")),
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# Subsignal("p7", Pins("pmod2:7")),
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# IOStandard("3.3_V_LVCMOS"),
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# )
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# ]
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# LPDDR4 SDRAM -----------------------------------------------------------------------------
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if not self.integrated_main_ram_size:
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# DRAM / PLL Blocks.
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# ------------------
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from litex.build.efinix import InterfaceWriterBlock, InterfaceWriterXMLBlock
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import xml.etree.ElementTree as et
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data_width = 512
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axi_bus = axi.AXIInterface(data_width=data_width, address_width=30, id_width=8) # 256MB.
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# self.platform.add_extension(_debug_io)
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# debug_io = platform.request("debug_io")
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# self.sync += debug_io.p0.eq(axi_bus.ar.valid)
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# self.sync += debug_io.p1.eq(axi_bus.r.valid)
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# self.sync += debug_io.p2.eq(axi_bus.ar.ready)
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# self.sync += debug_io.p3.eq(axi_bus.r.ready)
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# self.sync += debug_io.p4.eq(axi_bus.aw.valid)
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# self.sync += debug_io.p5.eq(axi_bus.b.valid)
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# self.sync += debug_io.p6.eq(axi_bus.aw.ready)
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# self.sync += debug_io.p7.eq(axi_bus.b.ready)
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axi_clk = self.crg.cd_cpu.clk.name_override
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class DRAMXMLBlock(InterfaceWriterXMLBlock):
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@staticmethod
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def generate(root, namespaces):
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# CHECKME: Switch to DDRDesignService?
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ddr_info = root.find("efxpt:ddr_info", namespaces)
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ddr = et.SubElement(ddr_info, "efxpt:adv_ddr",
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name = "ddr_inst1",
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ddr_def = "DDR_0",
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clkin_sel = "0",
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data_width = "32",
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physical_rank = "1",
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mem_type = "LPDDR4x",
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mem_density = "8G",
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)
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axi_target0 = et.SubElement(ddr, "efxpt:axi_target0",is_axi_width_256="false", is_axi_enable="true")
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gen_pin_target0 = et.SubElement(axi_target0, "efxpt:gen_pin_axi")
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et.SubElement(gen_pin_target0, "efxpt:pin", name=axi_clk, type_name=f"ACLK_0", is_bus="false", is_clk="true", is_clk_invert="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_apcmd", type_name="ARAPCMD_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_ready", type_name="ARREADY_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_valid", type_name="ARVALID_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_qos", type_name="ARQOS_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_apcmd", type_name="AWAPCMD_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_allstrb", type_name="AWALLSTRB_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_awcobuf", type_name="AWCOBUF_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_ready", type_name="AWREADY_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_valid", type_name="AWVALID_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_lock", type_name="AWLOCK_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_qos", type_name="AWQOS_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_b_ready", type_name="BREADY_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_b_valid", type_name="BVALID_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_r_last", type_name="RLAST_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_r_ready", type_name="RREADY_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_r_valid", type_name="RVALID_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_w_last", type_name="WLAST_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_w_ready", type_name="WREADY_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_w_valid", type_name="WVALID_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_addr", type_name="ARADDR_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_burst", type_name="ARBURST_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_id", type_name="ARID_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_len", type_name="ARLEN_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_size", type_name="ARSIZE_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_ar_lock", type_name="ARLOCK_0", is_bus="false")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_addr", type_name="AWADDR_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_burst", type_name="AWBURST_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_id", type_name="AWID_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_len", type_name="AWLEN_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_size", type_name="AWSIZE_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_aw_cache", type_name="AWCACHE_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_b_id", type_name="BID_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_b_resp", type_name="BRESP_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_r_data", type_name="RDATA_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_r_id", type_name="RID_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_r_resp", type_name="RRESP_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_w_data", type_name="WDATA_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_w_strb", type_name="WSTRB_0", is_bus="true")
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et.SubElement(gen_pin_target0, "efxpt:pin", name="ddr0_resetn", type_name="ARSTN_0", is_bus="false")
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axi_target1 = et.SubElement(ddr, "efxpt:axi_target1",is_axi_width_256="false", is_axi_enable="false")
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gen_pin_target1 = et.SubElement(axi_target1, "efxpt:gen_pin_axi")
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et.SubElement(gen_pin_target1, "efxpt:pin", name=axi_clk, type_name=f"ACLK_1", is_bus="false", is_clk="true", is_clk_invert="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_apcmd", type_name="ARAPCMD_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_ready", type_name="ARREADY_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_valid", type_name="ARVALID_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_qos", type_name="ARQOS_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_apcmd", type_name="AWAPCMD_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_allstrb", type_name="AWALLSTRB_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_awcobuf", type_name="AWCOBUF_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_ready", type_name="AWREADY_1", is_bus="false")
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et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_valid", type_name="AWVALID_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_lock", type_name="AWLOCK_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_qos", type_name="AWQOS_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_b_ready", type_name="BREADY_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_b_valid", type_name="BVALID_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_r_last", type_name="RLAST_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_r_ready", type_name="RREADY_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_r_valid", type_name="RVALID_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_w_last", type_name="WLAST_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_w_ready", type_name="WREADY_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_w_valid", type_name="WVALID_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_addr", type_name="ARADDR_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_burst", type_name="ARBURST_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_id", type_name="ARID_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_len", type_name="ARLEN_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_size", type_name="ARSIZE_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_ar_lock", type_name="ARLOCK_1", is_bus="false")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_addr", type_name="AWADDR_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_burst", type_name="AWBURST_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_id", type_name="AWID_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_len", type_name="AWLEN_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_size", type_name="AWSIZE_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_aw_cache", type_name="AWCACHE_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_b_id", type_name="BID_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_b_resp", type_name="BRESP_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_r_data", type_name="RDATA_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_r_id", type_name="RID_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_r_resp", type_name="RRESP_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_w_data", type_name="WDATA_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_w_strb", type_name="WSTRB_1", is_bus="true")
|
|
et.SubElement(gen_pin_target1, "efxpt:pin", name="ddr1_resetn", type_name="ARSTN_1", is_bus="false")
|
|
|
|
gen_pin_controller = et.SubElement(ddr, "efxpt:gen_pin_controller")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_CLK", is_bus="false", is_clk="true", is_clk_invert="false")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_INT", is_bus="false")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_MEM_RST_VALID", is_bus="false")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_REFRESH", is_bus="false")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_BUSY", is_bus="false")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_CMD_Q_ALMOST_FULL", is_bus="false")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_DP_IDLE", is_bus="false")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_CKE", is_bus="true")
|
|
et.SubElement(gen_pin_controller,"efxpt:pin", name="", type_name="CTRL_PORT_BUSY", is_bus="true")
|
|
|
|
gen_pin_cfg_ctrl = et.SubElement(ddr, "efxpt:gen_pin_cfg_ctrl")
|
|
et.SubElement(gen_pin_cfg_ctrl,"efxpt:pin", name="cfg_done", type_name="CFG_DONE", is_bus="false")
|
|
et.SubElement(gen_pin_cfg_ctrl,"efxpt:pin", name="cfg_start", type_name="CFG_START", is_bus="false")
|
|
et.SubElement(gen_pin_cfg_ctrl,"efxpt:pin", name="cfg_reset", type_name="CFG_RESET", is_bus="false")
|
|
et.SubElement(gen_pin_cfg_ctrl,"efxpt:pin", name="cfg_sel", type_name="CFG_SEL", is_bus="false")
|
|
|
|
ctrl_reg_inf = et.SubElement(ddr, "efxpt:ctrl_reg_inf", is_reg_ena= "false")
|
|
gen_pin_ctrl_reg_inf = et.SubElement(ctrl_reg_inf, "efxpt:gen_pin_ctrl_reg_inf")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="axi0_ACLK", type_name="CR_ACLK", is_bus="false", is_clk="true", is_clk_invert="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARESETn", type_name="CR_ARESETN", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARVALID", type_name="CR_ARVALID", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARREADY", type_name="CR_ARREADY", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regAWVALID", type_name="CR_AWVALID", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regAWREADY", type_name="CR_AWREADY", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regBVALID", type_name="CR_BVALID", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regBREADY", type_name="CR_BREADY", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regRLAST", type_name="CR_RLAST", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regRVALID", type_name="CR_RVALID", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regRREADY", type_name="CR_RREADY", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regWLAST", type_name="CR_WLAST", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regWVALID", type_name="CR_WVALID", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regWREADY", type_name="CR_WREADY", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARADDR", type_name="CR_ARADDR", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARID", type_name="CR_ARID", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARLEN", type_name="CR_ARLEN", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARSIZE", type_name="CR_ARSIZE", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regARBURST", type_name="CR_ARBURST", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regAWADDR", type_name="CR_AWADDR", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regAWID", type_name="CR_AWID", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regAWLEN", type_name="CR_AWLEN", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regAWSIZE", type_name="CR_AWSIZE", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regAWBURST", type_name="CR_AWBURST", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regBID", type_name="CR_BID", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regBRESP", type_name="CR_BRESP", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regRDATA", type_name="CR_RDATA", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regRID", type_name="CR_RID", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regRRESP", type_name="CR_RRESP", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regWDATA", type_name="CR_WDATA", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="regWSTRB", type_name="CR_WSTRB", is_bus="true")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="" , type_name="CFG_PHY_RSTN", is_bus="false")
|
|
et.SubElement(gen_pin_ctrl_reg_inf,"efxpt:pin", name="" , type_name="CTRL_RSTN", is_bus="false")
|
|
|
|
cs_fpga = et.SubElement(ddr, "efxpt:cs_fpga")
|
|
et.SubElement(cs_fpga,"efxpt:param", name="DQ_PULLDOWN_DRV", value="34.3", value_type="str")
|
|
et.SubElement(cs_fpga,"efxpt:param", name="DQ_PULLDOWN_ODT", value="60", value_type="str")
|
|
et.SubElement(cs_fpga,"efxpt:param", name="DQ_PULLUP_DRV", value="34.3", value_type="str")
|
|
et.SubElement(cs_fpga,"efxpt:param", name="DQ_PULLUP_ODT", value="Hi-Z", value_type="str")
|
|
et.SubElement(cs_fpga,"efxpt:param", name="FPGA_VREF_RANGE0", value="22.040", value_type="float")
|
|
et.SubElement(cs_fpga,"efxpt:param", name="FPGA_VREF_RANGE1", value="23.000", value_type="float")
|
|
et.SubElement(cs_fpga,"efxpt:param", name="MEM_FPGA_VREF_RANGE", value="Range 1", value_type="str")
|
|
|
|
cs_memory = et.SubElement(ddr, "efxpt:cs_memory")
|
|
et.SubElement(cs_memory,"efxpt:param", name="BLEN", value="BL=16 Sequential", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="CA_ODT_CS0", value="RZQ/4", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="CA_ODT_CS1", value="Disable", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="CA_VREF_RANGE0", value="27.200", value_type="float")
|
|
et.SubElement(cs_memory,"efxpt:param", name="CA_VREF_RANGE1", value="22.000", value_type="float")
|
|
et.SubElement(cs_memory,"efxpt:param", name="DQ_ODT_CS0", value="RZQ/4", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="DQ_ODT_CS1", value="Disable", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="DQ_VREF_RANGE0", value="20.000", value_type="float")
|
|
et.SubElement(cs_memory,"efxpt:param", name="DQ_VREF_RANGE1", value="27.200", value_type="float")
|
|
et.SubElement(cs_memory,"efxpt:param", name="MEM_CA_RANGE", value="RANGE[1]", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="MEM_DQ_RANGE", value="RANGE[1]", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="NWR", value="nWR=6", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="ODTD_CA_CS0", value="Obeys ODT_CA Bond Pad", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="ODTD_CA_CS1", value="Obeys ODT_CA Bond Pad", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="ODTE_CK_CS0", value="Override Disabled", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="ODTE_CK_CS1", value="Override Disabled", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="ODTE_CS_CS0", value="Override Disabled", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="ODTE_CS_CS1", value="Override Disabled", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="PDDS_CS0", value="RZQ/6", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="PDDS_CS1", value="RFU", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="RL_DBI_READ", value="Yes", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="RL_DBI_READ_DISABLED", value="RL=6,nRTP=8", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="RL_DBI_READ_ENABLED", value="RL=6,nRTP=8", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="RL_DBI_WRITE", value="Yes", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="WL_SET", value="Set A", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="WL_SET_A", value="WL=4", value_type="str")
|
|
et.SubElement(cs_memory,"efxpt:param", name="WL_SET_B", value="WL=4", value_type="str")
|
|
|
|
cs_memory_timing = et.SubElement(ddr, "efxpt:cs_memory_timing")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tCCD", value="8", value_type="int")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tCCDMW", value="32", value_type="int")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tFAW", value="40.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tPPD", value="4", value_type="int")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tRAS", value="42.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tRCD", value="18.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tRPab", value="21.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tRPpb", value="18.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tRRD", value="10.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tRTP", value="7.500", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tSR", value="15.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tWR", value="18.000", value_type="float")
|
|
et.SubElement(cs_memory_timing,"efxpt:param", name="tWTR", value="10.000", value_type="float")
|
|
|
|
|
|
pin_swap = et.SubElement(ddr, "efxpt:pin_swap")
|
|
et.SubElement(pin_swap,"efxpt:param", name="CA[0]", value="CA[0]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="CA[1]", value="CA[1]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="CA[2]", value="CA[2]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="CA[3]", value="CA[3]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="CA[4]", value="CA[4]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="CA[5]", value="CA[5]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DM[0]", value="DM[0]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DM[1]", value="DM[1]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DM[2]", value="DM[2]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DM[3]", value="DM[3]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[0]", value="DQ[3]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[10]", value="DQ[12]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[11]", value="DQ[11]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[12]", value="DQ[8]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[13]", value="DQ[10]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[14]", value="DQ[13]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[15]", value="DQ[14]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[16]", value="DQ[22]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[17]", value="DQ[17]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[18]", value="DQ[18]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[19]", value="DQ[19]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[1]", value="DQ[6]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[20]", value="DQ[16]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[21]", value="DQ[20]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[22]", value="DQ[21]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[23]", value="DQ[23]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[24]", value="DQ[29]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[25]", value="DQ[31]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[26]", value="DQ[28]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[27]", value="DQ[30]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[28]", value="DQ[25]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[29]", value="DQ[27]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[2]", value="DQ[4]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[30]", value="DQ[26]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[31]", value="DQ[24]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[3]", value="DQ[5]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[4]", value="DQ[0]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[5]", value="DQ[1]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[6]", value="DQ[7]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[7]", value="DQ[2]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[8]", value="DQ[15]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="DQ[9]", value="DQ[9]", value_type="str")
|
|
et.SubElement(pin_swap,"efxpt:param", name="ENABLE_PIN_SWAP", value="true", value_type="bool")
|
|
|
|
platform.toolchain.ifacewriter.xml_blocks.append(DRAMXMLBlock())
|
|
|
|
# DRAM AXI-Ports.
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# --------------
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ios = [(f"ddr0", 0,
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Subsignal("ar_valid", Pins(1)),
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Subsignal("ar_ready", Pins(1)),
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Subsignal("ar_addr", Pins(33)),
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Subsignal("ar_id", Pins(6)),
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Subsignal("ar_len", Pins(8)),
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Subsignal("ar_size", Pins(3)),
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Subsignal("ar_burst", Pins(2)),
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Subsignal("ar_lock", Pins(1)),
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Subsignal("ar_apcmd", Pins(1)),
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Subsignal("ar_qos", Pins(1)),
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Subsignal("aw_valid", Pins(1)),
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Subsignal("aw_ready", Pins(1)),
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Subsignal("aw_addr", Pins(33)),
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Subsignal("aw_id", Pins(6)),
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Subsignal("aw_len", Pins(8)),
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Subsignal("aw_size", Pins(3)),
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Subsignal("aw_burst", Pins(2)),
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Subsignal("aw_lock", Pins(1)),
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Subsignal("aw_cache", Pins(4)),
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Subsignal("aw_qos", Pins(1)),
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Subsignal("aw_allstrb", Pins(1)),
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Subsignal("aw_apcmd", Pins(1)),
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Subsignal("awcobuf", Pins(1)),
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Subsignal("w_valid", Pins(1)),
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Subsignal("w_ready", Pins(1)),
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Subsignal("w_data", Pins(data_width)),
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Subsignal("w_strb", Pins(data_width//8)),
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Subsignal("w_last", Pins(1)),
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Subsignal("b_valid", Pins(1)),
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Subsignal("b_ready", Pins(1)),
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Subsignal("b_resp", Pins(1)),
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Subsignal("b_id", Pins(6)),
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Subsignal("r_valid", Pins(1)),
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Subsignal("r_ready", Pins(1)),
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Subsignal("r_data", Pins(data_width)),
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Subsignal("r_id", Pins(6)),
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Subsignal("r_resp", Pins(2)),
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Subsignal("r_last", Pins(1)),
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Subsignal("resetn", Pins(1)),
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)]
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if hasattr(self.cpu, "add_memory_buses"):
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self.cpu.add_memory_buses(address_width = 32, data_width = data_width)
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assert len(self.cpu.memory_buses) == 1
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mbus = self.cpu.memory_buses[0]
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self.comb +=mbus.connect(axi_bus)
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io = platform.add_iface_ios(ios)
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self.comb += [
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io.ar_valid.eq(axi_bus.ar.valid),
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axi_bus.ar.ready.eq(io.ar_ready),
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io.ar_addr.eq(axi_bus.ar.addr),
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io.ar_id.eq(axi_bus.ar.id),
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io.ar_len.eq(axi_bus.ar.len),
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io.ar_size.eq(axi_bus.ar.size),
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io.ar_burst.eq(axi_bus.ar.burst),
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io.ar_lock.eq(axi_bus.ar.lock),
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io.ar_apcmd.eq(0),
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io.ar_qos.eq(axi_bus.ar.qos),
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io.aw_valid.eq(axi_bus.aw.valid),
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axi_bus.aw.ready.eq(io.aw_ready),
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io.aw_addr.eq(axi_bus.aw.addr),
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io.aw_id.eq(axi_bus.aw.id),
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io.aw_len.eq(axi_bus.aw.len),
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io.aw_size.eq(axi_bus.aw.size),
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io.aw_burst.eq(axi_bus.aw.burst),
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io.aw_lock.eq(axi_bus.aw.lock),
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io.aw_cache.eq(axi_bus.aw.cache),
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io.aw_qos.eq(axi_bus.aw.qos),
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io.aw_allstrb.eq(0 if not hasattr(self.cpu, "mBus_awallStrb") else self.cpu.mBus_awallStrb),
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io.aw_apcmd.eq(0),
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io.awcobuf.eq(0),
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io.w_valid.eq(axi_bus.w.valid),
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axi_bus.w.ready.eq(io.w_ready),
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io.w_data.eq(axi_bus.w.data),
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io.w_strb.eq(axi_bus.w.strb),
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io.w_last.eq(axi_bus.w.last),
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axi_bus.b.valid.eq(io.b_valid),
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io.b_ready.eq(axi_bus.b.ready),
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axi_bus.b.resp.eq(io.b_resp),
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axi_bus.b.id.eq(io.b_id),
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axi_bus.r.valid.eq(io.r_valid),
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io.r_ready.eq(axi_bus.r.ready),
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axi_bus.r.data.eq(io.r_data),
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axi_bus.r.id.eq(io.r_id),
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axi_bus.r.resp.eq(io.r_resp),
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axi_bus.r.last.eq(io.r_last),
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io.resetn.eq(~self.crg.cd_sys.rst),
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]
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cfgs = [(f"cfg", 0,
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Subsignal("start", Pins(1)),
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Subsignal("reset", Pins(1)),
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Subsignal("sel", Pins(1)),
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Subsignal("done", Pins(1)),
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)]
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cfg = platform.add_iface_ios(cfgs)
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self.cfg_state = Signal(1, reset=0)
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self.cfg_count = Signal(8, reset=0)
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self.comb += [
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cfg.sel.eq(0),
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cfg.reset.eq(self.cfg_state == 0),
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cfg.start.eq(self.cfg_state != 0),
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]
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self.sync += self.cfg_count.eq(self.cfg_count + (self.cfg_count != 0xFF))
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self.sync += self.cfg_state.eq(self.cfg_state | (self.cfg_count == 0xFF))
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# Use DRAM's target0 port as Main Ram.
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self.bus.add_region("main_ram", SoCRegion(
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origin = 0x4000_0000,
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size = 0x4000_0000, # 1GB.
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mode ="rwx",
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))
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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=efinix_ti375_c529_dev_kit.Platform, description="LiteX SoC on Efinix Ti375 C529 Dev Kit.")
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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("--cpu-clk-freq", default=100e6, type=float, help="System clock frequency.")
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parser.add_target_argument("--with-ohci", action="store_true", help="Enable USB OHCI.")
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sdopts = parser.target_group.add_mutually_exclusive_group()
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sdopts.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.")
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sdopts.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.")
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args = parser.parse_args()
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soc = BaseSoC(
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sys_clk_freq = args.sys_clk_freq,
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cpu_clk_freq = args.cpu_clk_freq,
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with_ohci = args.with_ohci,
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**parser.soc_argdict)
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if args.with_spi_sdcard:
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soc.add_spi_sdcard()
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if args.with_sdcard:
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soc.add_sdcard()
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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 __name__ == "__main__":
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main()
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