196 lines
6.4 KiB
Python
196 lines
6.4 KiB
Python
import os
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import subprocess
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import sys
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from migen.fhdl.std import *
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from migen.fhdl.structure import _Fragment
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from mibuild.generic_platform import *
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from mibuild import tools
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from mibuild.xilinx import common
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def _format_constraint(c):
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if isinstance(c, Pins):
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return "LOC=" + c.identifiers[0]
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elif isinstance(c, IOStandard):
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return "IOSTANDARD=" + c.name
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elif isinstance(c, Drive):
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return "DRIVE=" + str(c.strength)
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elif isinstance(c, Misc):
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return c.misc
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def _format_ucf(signame, pin, others, resname):
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fmt_c = []
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for c in [Pins(pin)] + others:
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fc = _format_constraint(c)
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if fc is not None:
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fmt_c.append(fc)
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fmt_r = resname[0] + ":" + str(resname[1])
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if resname[2] is not None:
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fmt_r += "." + resname[2]
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return "NET \"" + signame + "\" " + " | ".join(fmt_c) + "; # " + fmt_r + "\n"
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def _build_ucf(named_sc, named_pc):
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r = ""
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for sig, pins, others, resname in named_sc:
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if len(pins) > 1:
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for i, p in enumerate(pins):
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r += _format_ucf(sig + "(" + str(i) + ")", p, others, resname)
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else:
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r += _format_ucf(sig, pins[0], others, resname)
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if named_pc:
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r += "\n" + "\n\n".join(named_pc)
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return r
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def _build_xst_files(device, sources, vincpaths, build_name, xst_opt):
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prj_contents = ""
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for filename, language in sources:
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prj_contents += language + " work " + filename + "\n"
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tools.write_to_file(build_name + ".prj", prj_contents)
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xst_contents = """run
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-ifn {build_name}.prj
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-top top
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{xst_opt}
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-ofn {build_name}.ngc
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-p {device}
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""".format(build_name=build_name, xst_opt=xst_opt, device=device)
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for path in vincpaths:
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xst_contents += "-vlgincdir " + path + "\n"
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tools.write_to_file(build_name + ".xst", xst_contents)
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def _run_yosys(device, sources, vincpaths, build_name):
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ys_contents = ""
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incflags = ""
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for path in vincpaths:
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incflags += " -I" + path
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for filename, language in sources:
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ys_contents += "read_{}{} {}\n".format(language, incflags, filename)
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if device[:2] == "xc":
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archcode = device[2:4]
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else:
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archcode = device[0:2]
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arch = {
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"6s": "spartan6",
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"7a": "artix7",
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"7k": "kintex7",
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"7v": "virtex7",
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"7z": "zynq7000"
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}[archcode]
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ys_contents += """hierarchy -check -top top
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proc; memory; opt; fsm; opt
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synth_xilinx -arch {arch} -top top -edif {build_name}.edif""".format(arch=arch, build_name=build_name)
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ys_name = build_name + ".ys"
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tools.write_to_file(ys_name, ys_contents)
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r = subprocess.call(["yosys", ys_name])
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if r != 0:
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raise OSError("Subprocess failed")
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def _run_ise(build_name, ise_path, source, mode, ngdbuild_opt,
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bitgen_opt, ise_commands, map_opt, par_opt, ver=None):
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if sys.platform == "win32" or sys.platform == "cygwin":
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source = False
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build_script_contents = "# Autogenerated by mibuild\nset -e\n"
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if source:
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settings = common.settings(ise_path, ver, "ISE_DS")
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build_script_contents += "source " + settings + "\n"
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if mode == "edif":
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ext = "edif"
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else:
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ext = "ngc"
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build_script_contents += """
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xst -ifn {build_name}.xst
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"""
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build_script_contents += """
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ngdbuild {ngdbuild_opt} -uc {build_name}.ucf {build_name}.{ext} {build_name}.ngd
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map {map_opt} -o {build_name}_map.ncd {build_name}.ngd {build_name}.pcf
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par {par_opt} {build_name}_map.ncd {build_name}.ncd {build_name}.pcf
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bitgen {bitgen_opt} {build_name}.ncd {build_name}.bit
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"""
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build_script_contents = build_script_contents.format(build_name=build_name,
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ngdbuild_opt=ngdbuild_opt, bitgen_opt=bitgen_opt, ext=ext,
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par_opt=par_opt, map_opt=map_opt)
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build_script_contents += ise_commands.format(build_name=build_name)
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build_script_file = "build_" + build_name + ".sh"
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tools.write_to_file(build_script_file, build_script_contents, force_unix=True)
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r = subprocess.call(["bash", build_script_file])
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if r != 0:
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raise OSError("Subprocess failed")
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class XilinxISEToolchain:
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def __init__(self):
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self.xst_opt = """-ifmt MIXED
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-opt_mode SPEED
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-register_balancing yes"""
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self.map_opt = "-ol high -w"
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self.par_opt = "-ol high -w"
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self.ngdbuild_opt = ""
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self.bitgen_opt = "-g LCK_cycle:6 -g Binary:Yes -w"
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self.ise_commands = ""
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def build(self, platform, fragment, build_dir="build", build_name="top",
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ise_path="/opt/Xilinx", source=True, run=True, mode="xst"):
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tools.mkdir_noerror(build_dir)
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os.chdir(build_dir)
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if not isinstance(fragment, _Fragment):
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fragment = fragment.get_fragment()
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platform.finalize(fragment)
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ngdbuild_opt = self.ngdbuild_opt
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vns = None
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if mode == "xst" or mode == "yosys":
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v_output = platform.get_verilog(fragment)
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vns = v_output.ns
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named_sc, named_pc = platform.resolve_signals(vns)
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v_file = build_name + ".v"
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v_output.write(v_file)
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sources = platform.sources | {(v_file, "verilog")}
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if mode == "xst":
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_build_xst_files(platform.device, sources, platform.verilog_include_paths, build_name, self.xst_opt)
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isemode = "xst"
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else:
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_run_yosys(platform.device, sources, platform.verilog_include_paths, build_name)
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isemode = "edif"
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ngdbuild_opt += "-p " + platform.device
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if mode == "mist":
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from mist import synthesize
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synthesize(fragment, platform.constraint_manager.get_io_signals())
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if mode == "edif" or mode == "mist":
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e_output = platform.get_edif(fragment)
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vns = e_output.ns
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named_sc, named_pc = platform.resolve_signals(vns)
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e_file = build_name + ".edif"
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e_output.write(e_file)
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isemode = "edif"
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tools.write_to_file(build_name + ".ucf", _build_ucf(named_sc, named_pc))
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if run:
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_run_ise(build_name, ise_path, source, isemode,
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ngdbuild_opt, self.bitgen_opt, self.ise_commands,
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self.map_opt, self.par_opt)
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os.chdir("..")
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return vns
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def add_period_constraint(self, platform, clk, period):
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platform.add_platform_command("""NET "{clk}" TNM_NET = "GRP{clk}";
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TIMESPEC "TS{clk}" = PERIOD "GRP{clk}" """+str(period)+""" ns HIGH 50%;""", clk=clk)
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