diff --git a/litex_boards/platforms/aliexpress_xc7k70t.py b/litex_boards/platforms/aliexpress_xc7k70t.py new file mode 100644 index 0000000..16d7e16 --- /dev/null +++ b/litex_boards/platforms/aliexpress_xc7k70t.py @@ -0,0 +1,243 @@ +# +# This file is part of LiteX-Boards. +# +# Copyright (c) 2023 Hans Baier +# SPDX-License-Identifier: BSD-2-Clause + +from litex.build.generic_platform import * +from litex.build.xilinx import Xilinx7SeriesPlatform +from litex.build.openocd import OpenOCD + +# This board is available here: +# https://www.aliexpress.com/item/1005005572549665.html + +# IOs ---------------------------------------------------------------------------------------------- + +_io = [ + # Clk / Rst + ("clk50", 0, Pins("E11"), IOStandard("LVCMOS33")), + ("sma_global_clock", 0, Pins("C12"), IOStandard("LVCMOS33")), + ("sma_global_clock", 1, Pins("C11"), IOStandard("LVCMOS33")), + + # Leds + ("user_led", 0, Pins("AD9"), IOStandard("LVCMOS18")), + ("user_led", 1, Pins("AD8"), IOStandard("LVCMOS18")), + ("user_led", 2, Pins("AC9"), IOStandard("LVCMOS18")), + ("user_led", 3, Pins("AC8"), IOStandard("LVCMOS18")), + + # Buttons + ("user_btn_n", 0, Pins("AF7"), IOStandard("LVCMOS18")), + ("user_btn_n", 1, Pins("AF8"), IOStandard("LVCMOS18")), + ("user_btn_n", 2, Pins("AE8"), IOStandard("LVCMOS18")), + ("user_btn_n", 3, Pins("AF9"), IOStandard("LVCMOS18")), + + + # Serial + ("serial", 0, + Subsignal("tx", Pins("HR_IO:0")), + Subsignal("rx", Pins("HR_IO:1")), + IOStandard("LVCMOS33") + ), + + # SDRAM + ("sdram_clock", 0, Pins("P23"), IOStandard("LVCMOS33"), Misc("SLEW=FAST")), + ("sdram", 0, + Subsignal("a", Pins("L25 L24 K23 M26 G25 F24 H26 F23 E23 J26 M25 G24")), + Subsignal("dq", Pins("T23 T25 T24 R25 R23 R26 P24 P25 F25 H24 E26 H23 E25 J24 D26 J23")), + Subsignal("ba", Pins("K25 M24")), + Subsignal("dm", Pins("N23 G26")), + Subsignal("ras_n", Pins("N24")), + Subsignal("cas_n", Pins("K26")), + Subsignal("we_n", Pins("P26")), + Subsignal("cs_n", Pins("N26")), + Subsignal("cke", Pins("J25")), + IOStandard("LVCMOS33"), + Misc("SLEW = FAST") + ), + + ("spiflash4x", 0, # clock needs to be accessed through STARTUPE2 + Subsignal("cs_n", Pins("C23")), + Subsignal("dq", Pins("B24 A25 B22 A22")), + IOStandard("LVCMOS33") + ), + ("spiflash8x", 0, + Subsignal("clk", Pins("A14")), + Subsignal("cs_n", Pins("B11")), + Subsignal("dq", Pins("A13 A10 B10 B14 A15 B12 A12 B15")), + IOStandard("LVCMOS33") + ), + + # RGMII Ethernet + ("eth_clocks", 0, + Subsignal("tx", Pins("AF13"), IOStandard("LVCMOS18")), + Subsignal("rx", Pins("AB11"), IOStandard("LVCMOS18")) + ), + ("eth", 0, + # Subsignal("rst_n", Pins("")), + Subsignal("mdio", Pins("AD13")), + Subsignal("mdc", Pins("AC13")), + Subsignal("rx_ctl", Pins("AF10")), + Subsignal("rx_data", Pins("AE10 AE11 AF12 AE12")), + Subsignal("tx_ctl", Pins("AE13")), + Subsignal("tx_data", Pins("AD10 AD11 AC11 AC12")), + IOStandard("LVCMOS18") + ), + + # camera connector I2C, has pull up resistors + ("i2c", 0, + Subsignal("scl", Pins("C13")), + Subsignal("sda", Pins("C16")), + IOStandard("LVCMOS33"), + ), + + ("camera", 0, + Subsignal("d", Pins("C17 B16 A17 B17 A18 D16 C18 D13")), + Subsignal("vsync", Pins("C14")), + Subsignal("xclk", Pins("C19")), + Subsignal("pclk", Pins("E18")), + Subsignal("pwdn", Pins("D11")), + Subsignal("reset", Pins("D15")), + Subsignal("href", Pins("D14")), + IOStandard("LVCMOS33"), + ), + + # HDMI out + ("hdmi_out", 0, + Subsignal("clk_p", Pins("E10"), IOStandard("TMDS_33")), + Subsignal("clk_n", Pins("D10"), IOStandard("TMDS_33")), + Subsignal("data0_p", Pins("D9"), IOStandard("TMDS_33")), + Subsignal("data0_n", Pins("D8"), IOStandard("TMDS_33")), + Subsignal("data1_p", Pins("C9"), IOStandard("TMDS_33")), + Subsignal("data1_n", Pins("B9"), IOStandard("TMDS_33")), + Subsignal("data2_p", Pins("A9"), IOStandard("TMDS_33")), + Subsignal("data2_n", Pins("A8"), IOStandard("TMDS_33")), + ), + + # PCIe + ("pcie_x1", 0, + Subsignal("rst_n", Pins("F8"), IOStandard("LVCMOS33")), + Subsignal("clk_p", Pins("F5")), + Subsignal("clk_n", Pins("F6")), + Subsignal("rx_p", Pins("B6")), + Subsignal("rx_n", Pins("B5")), + Subsignal("tx_p", Pins("A4")), + Subsignal("tx_n", Pins("A3")) + ), + ("pcie_x2", 0, + Subsignal("rst_n", Pins("F8"), IOStandard("LVCMOS33")), + Subsignal("clk_p", Pins("F5")), + Subsignal("clk_n", Pins("F6")), + Subsignal("rx_p", Pins("B6 C4")), + Subsignal("rx_n", Pins("B5 C3")), + Subsignal("tx_p", Pins("A4 B2")), + Subsignal("tx_n", Pins("A3 B1")) + ), + ("pcie_x4", 0, + Subsignal("rst_n", Pins("F8"), IOStandard("LVCMOS33")), + Subsignal("clk_p", Pins("F5")), + Subsignal("clk_n", Pins("F6")), + Subsignal("rx_p", Pins("B6 C4 E4 G4")), + Subsignal("rx_n", Pins("B5 C3 E3 G3")), + Subsignal("tx_p", Pins("A4 B2 D2 F2")), + Subsignal("tx_n", Pins("A3 B1 D1 F1")) + ), +] + +# Connectors --------------------------------------------------------------------------------------- + +_connectors = [ + # 1.8V + ("HP_IO", { + "0_P" : "AE6", + "0_N" : "AE5", + "1_P" : "AD6", + "1_N" : "AD5", + "2_P" : "AF5", + "2_N" : "AF4", + "3_P" : "AD4", + "3_N" : "AD3", + "4_P" : "AF3", + "4_N" : "AF2", + "5_P" : "AE3", + "5_N" : "AE2", + "6_P" : "AB2", + "6_N" : "AC2", + "7_P" : "V2", + "7_N" : "V1", + "8_P" : "AA3", + "8_N" : "AA2", + "9_P" : "AB1", + "9_N" : "AC1", + "10_P" : "W1", + "10_N" : "Y1", + "11_P" : "AD1", + "11_N" : "AE1", + }), + + # 3.3V + ("HR_IO", { + 0 : "D19", + 1 : "D18", + 2 : "C21", + 3 : "D20", + 4 : "C22", + 5 : "D21", + 6 : "C24", + 7 : "D23", + 8 : "D24", + 9 : "A19", + 10 : "B19", + 11 : "A20", + 12 : "B20", + 13 : "B21", + 14 : "A23", + 15 : "A24", + 16 : "B25", + 17 : "B26", + 18 : "C26", + 19 : "D25", + }), + + # 3.3V + ("CAM", { + 3 : "C14", + 4 : "C13", # has pull up resistor + 5 : "D14", + 6 : "C16", # has pull up resistor + 7 : "D15", + 8 : "C17", + 9 : "B16", + 10 : "A17", + 11 : "B17", + 12 : "A18", + 13 : "D16", + 14 : "C18", + 15 : "D13", + 16 : "E18", + 17 : "C19", + 18 : "D11", + }) +] +# Platform ----------------------------------------------------------------------------------------- + +class Platform(Xilinx7SeriesPlatform): + default_clk_name = "clk50" + default_clk_period = 1e9/50e6 + + def __init__(self): + Xilinx7SeriesPlatform.__init__(self, "xc7k70t-fbg676-1", _io, _connectors, toolchain="vivado") + self.add_platform_command(""" +set_property CFGBVS VCCO [current_design] +set_property CONFIG_VOLTAGE 3.3 [current_design] +set_property BITSTREAM.GENERAL.COMPRESS TRUE [current_design] +""") + self.toolchain.bitstream_commands = ["set_property BITSTREAM.CONFIG.SPI_BUSWIDTH 4 [current_design]"] + self.toolchain.additional_commands = ["write_cfgmem -force -format bin -interface spix4 -size 16 -loadbit \"up 0x0 {build_name}.bit\" -file {build_name}.bin"] + + def create_programmer(self): + return OpenOCD("openocd_xc7_ft4232.cfg", "bscan_spi_xc7k70t.bit") + + def do_finalize(self, fragment): + Xilinx7SeriesPlatform.do_finalize(self, fragment) + self.add_period_constraint(self.lookup_request("eth_clocks:rx", 0, loose=True), 1e9/125e6) + self.add_period_constraint(self.lookup_request("eth_clocks:tx", 0, loose=True), 1e9/125e6) diff --git a/litex_boards/targets/aliexpress_xc7k70t.py b/litex_boards/targets/aliexpress_xc7k70t.py new file mode 100755 index 0000000..2cd61d0 --- /dev/null +++ b/litex_boards/targets/aliexpress_xc7k70t.py @@ -0,0 +1,166 @@ +#!/usr/bin/env python3 + +# +# This file is part of LiteX-Boards. +# +# Copyright (c) 2021 Nathaniel Lewis +# Copyright (c) 2023 Hans Baier +# SPDX-License-Identifier: BSD-2-Clause +from migen import * + +from litex.gen import * + +from litex.build.io import DDROutput +from litex_boards.platforms import aliexpress_xc7k70t + +from litex.soc.interconnect.csr import * +from litex.soc.integration.soc_core import * +from litex.soc.integration.builder import * + +from litex.soc.cores.clock import * +from litex.soc.cores.video import VideoS7HDMIPHY +from litex.soc.cores.led import LedChaser + +from litedram.modules import W9812G6JB, SDRModule +from litedram.phy import GENSDRPHY, HalfRateGENSDRPHY + +# CRG ---------------------------------------------------------------------------------------------- + +class CRG(LiteXModule): + def __init__(self, platform, sys_clk_freq, sdram_rate="1:1"): + self.rst = Signal() + self.cd_sys = ClockDomain() + self.cd_hdmi = ClockDomain() + self.cd_hdmi5x = ClockDomain() + if sdram_rate == "1:2": + self.cd_sys2x = ClockDomain() + self.cd_sys2x_ps = ClockDomain() + else: + self.cd_sys_ps = ClockDomain() + + # Clk/Rst + clk50 = platform.request("clk50") + + # PLL + self.pll = pll = S7PLL() + self.comb += pll.reset.eq(self.rst) + pll.register_clkin(clk50, 50e6) + pll.create_clkout(self.cd_sys, sys_clk_freq) + pll.create_clkout(self.cd_hdmi, 25e6, margin=0) + pll.create_clkout(self.cd_hdmi5x, 125e6, margin=0) + if sdram_rate == "1:2": + pll.create_clkout(self.cd_sys2x, 2*sys_clk_freq) + pll.create_clkout(self.cd_sys2x_ps, 2*sys_clk_freq, phase=90) + else: + pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90) + +# BaseSoC ----------------------------------------------------------------------------------------- + +class BaseSoC(SoCCore): + def __init__(self, sys_clk_freq=100e6, sdram_rate="1:1", + with_hdmi = False, + with_ethernet = False, + with_jtagbone = False, + with_pcie = False, + with_sdram = True, + with_led_chaser = True, + with_video_terminal = False, + with_video_framebuffer = False, + with_video_colorbars = False, + **kwargs): + platform = aliexpress_xc7k70t.Platform() + + # CRG -------------------------------------------------------------------------------------- + self.crg = CRG(platform, sys_clk_freq, sdram_rate) + + # SoCCore ---------------------------------------------------------------------------------- + SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on Alchitry Mojo", **kwargs) + + # Add SDRAM if a shield with RAM has been added + if not self.integrated_main_ram_size: + sdram_clk = ClockSignal("sys2x_ps" if sdram_rate == "1:2" else "sys_ps") + self.crg.specials += DDROutput(1, 0, platform.request("sdram_clock"), sdram_clk) + + sdrphy_cls = HalfRateGENSDRPHY if sdram_rate == "1:2" else GENSDRPHY + self.sdrphy = sdrphy_cls(platform.request("sdram"), sys_clk_freq) + self.add_sdram("sdram", + phy = self.sdrphy, + module = W9812G6JB(sys_clk_freq, sdram_rate), + l2_cache_size = kwargs.get("l2_size", 1024) + ) + + # HDMI Options ----------------------------------------------------------------------------- + if with_hdmi and (with_video_colorbars or with_video_framebuffer or with_video_terminal): + self.videophy = VideoS7HDMIPHY(platform.request("hdmi_out"), clock_domain="hdmi") + if with_video_colorbars: + self.add_video_colorbars(phy=self.videophy, timings="640x480@60Hz", clock_domain="hdmi") + if with_video_terminal: + self.add_video_terminal(phy=self.videophy, timings="640x480@60Hz", clock_domain="hdmi") + if with_video_framebuffer: + self.add_video_framebuffer(phy=self.videophy, timings="640x480@60Hz", clock_domain="hdmi") + + # Jtagbone --------------------------------------------------------------------------------- + if with_jtagbone: + self.add_jtagbone() + + # Ethernet / Etherbone --------------------------------------------------------------------- + if with_ethernet: + self.ethphy = LiteEthPHYRGMII( + clock_pads = self.platform.request("eth_clocks", 0), + pads = self.platform.request("eth", 0), + tx_delay = 1.417e-9, + rx_delay = 1.417e-9, + ) + self.add_ethernet(phy=self.ethphy) + + # 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) + + # 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=aliexpress_xc7k70t.Platform, description="LiteX SoC on AliExpress XC7K70T PCIe board.") + parser.add_target_argument("--sys-clk-freq", default=90e6, type=float, help="System clock frequency.") + parser.add_target_argument("--sdram-rate", default="1:1", help="SDRAM Rate: (1:1 Full Rate or 1:2 Half Rate).") + parser.add_argument("--with-ethernet", action="store_true", help="Enable ethernet") + parser.add_argument("--with-jtagbone", action="store_true", help="Enable JTAGbone") + parser.add_argument("--with-pcie", action="store_true", help="Enable PCIe") + parser.add_argument("--with-hdmi", action="store_true", help="Enable HDMI") + viopts = parser.target_group.add_mutually_exclusive_group() + viopts.add_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI).") + viopts.add_argument("--with-video-framebuffer", action="store_true", help="Enable Video Framebuffer (HDMI).") + viopts.add_argument("--with-video-colorbars", action="store_true", help="Enable Video Colorbars (HDMI).") + args = parser.parse_args() + + # Note: baudrate is fixed because regardless of USB->TTL baud, the AVR <-> FPGA baudrate is + # set to a fixed rate of 500 kilobaud. + soc = BaseSoC( + sys_clk_freq = args.sys_clk_freq, + sdram_rate = args.sdram_rate, + with_ethernet = args.with_ethernet, + with_pcie = args.with_pcie, + with_jtagbone = args.with_jtagbone, + with_hdmi = args.with_hdmi, + with_video_terminal = args.with_video_terminal, + with_video_framebuffer = args.with_video_framebuffer, + with_video_colorbars = args.with_video_colorbars, + **parser.soc_argdict + ) + + builder = Builder(soc, **parser.builder_argdict) + if args.build: + builder.build(**parser.toolchain_argdict) + +if __name__ == "__main__": + main()