105 lines
3.7 KiB
Python
105 lines
3.7 KiB
Python
# This file is Copyright (c) 2015 Florent Kermarrec <florent@enjoy-digital.fr>
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# License: BSD
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import os
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import subprocess
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import shutil
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from migen.fhdl.structure import _Fragment
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from migen.build.generic_platform import *
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from migen.build import tools
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from migen.build.lattice import common
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def _format_constraint(c):
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if isinstance(c, Pins):
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return ("LOCATE COMP ", " SITE " + "\"" + c.identifiers[0] + "\"")
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elif isinstance(c, IOStandard):
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return ("IOBUF PORT ", " IO_TYPE=" + c.name)
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elif isinstance(c, Misc):
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return c.misc
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def _format_lpf(signame, pin, others, resname):
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fmt_c = [_format_constraint(c) for c in ([Pins(pin)] + others)]
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r = ""
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for pre, suf in fmt_c:
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r += pre + "\"" + signame + "\"" + suf + ";\n"
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return r
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def _build_lpf(named_sc, named_pc):
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r = "BLOCK RESETPATHS;\n"
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r += "BLOCK ASYNCPATHS;\n"
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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_lpf(sig + "[" + str(i) + "]", p, others, resname)
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else:
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r += _format_lpf(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_files(device, sources, vincpaths, build_name):
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tcl = []
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tcl.append("prj_project new -name \"{}\" -impl \"implementation\" -dev {} -synthesis \"synplify\"".format(build_name, device))
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for path in vincpaths:
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tcl.append("prj_impl option {include path} {\"" + path + "\"}")
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for filename, language, library in sources:
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tcl.append("prj_src add \"" + filename + "\" -work " + library)
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tcl.append("prj_run Synthesis -impl implementation -forceOne")
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tcl.append("prj_run Translate -impl implementation")
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tcl.append("prj_run Map -impl implementation")
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tcl.append("prj_run PAR -impl implementation")
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tcl.append("prj_run Export -impl implementation -task Bitgen")
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tools.write_to_file(build_name + ".tcl", "\n".join(tcl))
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def _run_diamond(build_name, source, ver=None):
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if sys.platform == "win32" or sys.platform == "cygwin":
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build_script_contents = "REM Autogenerated by Migen\n"
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build_script_contents = "pnmainc " + build_name + ".tcl\n"
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build_script_file = "build_" + build_name + ".bat"
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tools.write_to_file(build_script_file, build_script_contents)
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r = subprocess.call([build_script_file])
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shutil.copy(os.path.join("implementation", build_name + "_implementation.bit"), build_name + ".bit")
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else:
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raise NotImplementedError
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if r != 0:
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raise OSError("Subprocess failed")
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class LatticeDiamondToolchain:
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def build(self, platform, fragment, build_dir="build", build_name="top",
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diamond_path="/opt/Diamond", run=True):
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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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v_output = platform.get_verilog(fragment)
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named_sc, named_pc = platform.resolve_signals(v_output.ns)
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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", "work")}
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_build_files(platform.device, sources, platform.verilog_include_paths, build_name)
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tools.write_to_file(build_name + ".lpf", _build_lpf(named_sc, named_pc))
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if run:
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_run_diamond(build_name, diamond_path)
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os.chdir("..")
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return v_output.ns
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def add_period_constraint(self, platform, clk, period):
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# TODO: handle differential clk
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platform.add_platform_command("""FREQUENCY PORT "{clk}" {freq} MHz;""".format(freq=str(float(1/period)*1000), clk="{clk}"), clk=clk)
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