diff --git a/litex_boards/platforms/xilinx_zcu106.py b/litex_boards/platforms/xilinx_zcu106.py new file mode 100644 index 0000000..45958ff --- /dev/null +++ b/litex_boards/platforms/xilinx_zcu106.py @@ -0,0 +1,55 @@ +# +# This file is part of LiteX-Boards. +# +# Copyright (c) 2022 Florent Kermarrec +# SPDX-License-Identifier: BSD-2-Clause + +from litex.build.generic_platform import * +from litex.build.xilinx import XilinxPlatform, VivadoProgrammer + +# IOs ---------------------------------------------------------------------------------------------- + +_io = [ + # Clk / Rst + ("rst", 0, Pins("G13"), IOStandard("LVCMOS18")), + ("clk125", 0, + Subsignal("p", Pins("H9"), IOStandard("DIFF_SSTL15")), + Subsignal("n", Pins("G9"), IOStandard("DIFF_SSTL15")), + ), + + # Leds + ("user_led", 0, Pins("AL11"), IOStandard("LVCMOS12")), + ("user_led", 1, Pins("AL13"), IOStandard("LVCMOS12")), + ("user_led", 2, Pins("AK13"), IOStandard("LVCMOS12")), + ("user_led", 3, Pins("AE15"), IOStandard("LVCMOS12")), + ("user_led", 4, Pins("AM8"), IOStandard("LVCMOS12")), + ("user_led", 5, Pins("AM9"), IOStandard("LVCMOS12")), + ("user_led", 6, Pins("AM10"), IOStandard("LVCMOS12")), + ("user_led", 7, Pins("AM11"), IOStandard("LVCMOS12")), + + # Serial + ("serial", 0, + Subsignal("cts", Pins("AP17")), + Subsignal("rts", Pins("AM15")), + Subsignal("tx", Pins("AL17")), + Subsignal("rx", Pins("AH17")), + IOStandard("LVCMOS12") + ), +] + + +# Platform ----------------------------------------------------------------------------------------- + +class Platform(XilinxPlatform): + default_clk_name = "clk125" + default_clk_period = 1e9/125e6 + + def __init__(self): + XilinxPlatform.__init__(self, "xczu7ev-ffvc1156-2-e", _io, toolchain="vivado") + + def create_programmer(self): + return VivadoProgrammer() + + def do_finalize(self, fragment): + XilinxPlatform.do_finalize(self, fragment) + self.add_period_constraint(self.lookup_request("clk125", loose=True), 1e9/125e6) diff --git a/litex_boards/targets/xilinx_zcu106.py b/litex_boards/targets/xilinx_zcu106.py new file mode 100755 index 0000000..adff449 --- /dev/null +++ b/litex_boards/targets/xilinx_zcu106.py @@ -0,0 +1,84 @@ +#!/usr/bin/env python3 + +# +# This file is part of LiteX-Boards. +# +# Copyright (c) 2022 Florent Kermarrec +# SPDX-License-Identifier: BSD-2-Clause + +import os +import argparse + +from migen import * +from migen.genlib.resetsync import AsyncResetSynchronizer + +from litex_boards.platforms import zcu106 + +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 + +# CRG ---------------------------------------------------------------------------------------------- + +class _CRG(Module): + def __init__(self, platform, sys_clk_freq): + self.rst = Signal() + self.clock_domains.cd_sys = ClockDomain() + + # # # + + clk125 = platform.request("clk125") + rst = platform.request("rst") + + self.submodules.pll = pll = USMMCM(speedgrade=-2) + self.comb += pll.reset.eq(self.rst | ~rst) + pll.register_clkin(clk125, 125e6) + pll.create_clkout(self.cd_sys, sys_clk_freq) + platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst. + +# BaseSoC ------------------------------------------------------------------------------------------ + +class BaseSoC(SoCCore): + def __init__(self, sys_clk_freq=int(125e6), with_led_chaser=True, **kwargs): + platform = zcu106.Platform() + + # SoCCore ---------------------------------------------------------------------------------- + SoCCore.__init__(self, platform, sys_clk_freq, + ident = "LiteX SoC on ZCU106", + ident_version = True, + **kwargs) + + # CRG -------------------------------------------------------------------------------------- + self.submodules.crg = _CRG(platform, sys_clk_freq) + + # Leds ------------------------------------------------------------------------------------- + if with_led_chaser: + self.submodules.leds = LedChaser( + pads = platform.request_all("user_led"), + sys_clk_freq = sys_clk_freq) + +# Build -------------------------------------------------------------------------------------------- + +def main(): + parser = argparse.ArgumentParser(description="LiteX SoC on ZCU106") + parser.add_argument("--build", action="store_true", help="Build bitstream.") + parser.add_argument("--load", action="store_true", help="Load bitstream.") + parser.add_argument("--sys-clk-freq", default=125e6, help="System clock frequency.") + builder_args(parser) + soc_core_args(parser) + args = parser.parse_args() + + soc = BaseSoC( + sys_clk_freq = int(float(args.sys_clk_freq)), + **soc_core_argdict(args) + ) + builder = Builder(soc, **builder_argdict(args)) + builder.build(run=args.build) + + if args.load: + prog = soc.platform.create_programmer() + prog.load_bitstream(os.path.join(builder.gateware_dir, soc.build_name + ".bit")) + +if __name__ == "__main__": + main()