ARTIQ Zynq-based core device support
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artiq-zynq/src/zc706.py

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#!/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()
platform.toolchain.bitstream_commands.extend([
"set_property BITSTREAM.GENERAL.COMPRESS True [current_design]",
])
SoCCore.__init__(self, platform=platform, ident="RTIO_ZC706")
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.Output(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, now64=True)
self.csr_devices.append("rtio")
self.comb += self.rtio.cri.connect(self.rtio_core.cri)
self.submodules.rtio_moninj = rtio.MonInj(rtio_channels)
self.csr_devices.append("rtio_moninj")
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("-r", default=None,
help="build Rust interface into the specified file")
parser.add_argument("-g", default=None,
help="build gateware into the specified directory")
args = parser.parse_args()
soc = ZC706()
soc.finalize()
if args.g is not None:
soc.build(build_dir=args.g)
if args.r is not None:
write_csr_file(soc, args.r)
if __name__ == "__main__":
main()