commit c7fb33379a2d118598df786ba37ea158203f582c Author: Sebastien Bourdeauducq Date: Sat Apr 11 17:39:16 2020 +0800 initial commit, simple RTIO gateware diff --git a/zc706.py b/zc706.py new file mode 100755 index 0000000..e51c94c --- /dev/null +++ b/zc706.py @@ -0,0 +1,73 @@ +#!/usr/bin/env python + +import argparse + +from migen import * + +from migen_axi.integration.soc_core import SoCCore +from migen_axi.platforms import zc706 +from misoc.integration import cpu_interface + +from artiq.gateware import rtio +from artiq.gateware.rtio.phy import ttl_simple + + +class ZC706(SoCCore): + def __init__(self): + platform = zc706.Platform() + SoCCore.__init__(self, platform=platform) + + platform.add_platform_command("create_clock -name clk_fpga_0 -period 8 [get_pins \"PS7/FCLKCLK[0]\"]") + platform.add_platform_command("set_input_jitter clk_fpga_0 0.24") + self.clock_domains.cd_rtio = ClockDomain() + self.comb += [ + self.cd_rtio.clk.eq(self.ps7.cd_sys.clk), + self.cd_rtio.rst.eq(self.ps7.cd_sys.rst) + ] + + rtio_channels = [] + for i in range(4): + pad = platform.request("user_led", i) + phy = ttl_simple.InOut(pad) + self.submodules += phy + rtio_channels.append(rtio.Channel.from_phy(phy)) + self.add_rtio(rtio_channels) + + def add_rtio(self, rtio_channels): + self.submodules.rtio_tsc = rtio.TSC("async", glbl_fine_ts_width=3) + self.submodules.rtio_core = rtio.Core(self.rtio_tsc, rtio_channels) + self.csr_devices.append("rtio_core") + self.submodules.rtio = rtio.KernelInitiator(self.rtio_tsc) + self.csr_devices.append("rtio") + + self.comb += self.rtio.cri.connect(self.rtio_core.cri) + + +def write_csr_file(soc, filename): + with open(filename, "w") as f: + f.write(cpu_interface.get_csr_rust( + soc.get_csr_regions(), soc.get_csr_groups(), soc.get_constants())) + + +def main(): + parser = argparse.ArgumentParser( + description="ARTIQ port to the ZC706 Zynq development kit") + parser.add_argument("action", metavar="ACTION", nargs="*", + default="gateware rustif".split(), + help="actions to perform, default: %(default)s") + args = parser.parse_args() + + soc = ZC706() + soc.finalize() + + for action in args.action: + if action == "gateware": + soc.build() + elif action == "rustif": + write_csr_file(soc, "pl.rs") + else: + raise ValueError("invalid action", action) + + +if __name__ == "__main__": + main()