diff --git a/litex_boards/targets/xilinx_zynq_xc7z010.py b/litex_boards/targets/xilinx_zynq_xc7z010.py new file mode 100644 index 0000000..1e70cfb --- /dev/null +++ b/litex_boards/targets/xilinx_zynq_xc7z010.py @@ -0,0 +1,86 @@ +#!/usr/bin/env python3 + +# +# This file is part of LiteX-Boards. +# +# Copyright (c) 2019-2020 Florent Kermarrec , +# SPDX-License-Identifier: BSD-2-Clause + +import os +import argparse + +from migen import * + +from litex_boards.platforms import zynq_xc7z010 +from litex.build.xilinx.vivado import vivado_build_args, vivado_build_argdict + +from litex.soc.interconnect import axi +from litex.soc.interconnect import wishbone + +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() + + self.submodules.pll = pll = S7PLL(speedgrade=-1) + self.comb += pll.reset.eq(self.rst)# | platform.request("cpu_reset")) + pll.register_clkin(platform.request("clk100"), 100e6) + 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(100e6), with_led_chaser=True, **kwargs): + platform = zynq_xc7z010.Platform() + + #if kwargs["uart_name"] == "serial": kwargs["uart_name"] = "usb_uart" # Use USB-UART Pmod on JB. + kwargs["uart_name"] = "serial" + + # SoCCore ---------------------------------------------------------------------------------- + SoCCore.__init__(self, platform, sys_clk_freq, + ident = "LiteX SoC on zynq xc7z010", + 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 zynq xc7z010") + 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=100e6, help="System clock frequency (default: 100MHz)") + builder_args(parser) + soc_core_args(parser) + vivado_build_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(**vivado_build_argdict(args), run=args.build) + + if args.load: + prog = soc.platform.create_programmer() + prog.load_bitstream(os.path.join(builder.gateware_dir, soc.build_name + ".bit"), device=1) + +if __name__ == "__main__": + main()