litex/mibuild/lattice/diamond.py

105 lines
3.7 KiB
Python

# This file is Copyright (c) 2015 Florent Kermarrec <florent@enjoy-digital.fr>
# License: BSD
import os
import subprocess
import shutil
from migen.fhdl.structure import _Fragment
from mibuild.generic_platform import *
from mibuild import tools
from mibuild.lattice import common
def _format_constraint(c):
if isinstance(c, Pins):
return ("LOCATE COMP ", " SITE " + "\"" + c.identifiers[0] + "\"")
elif isinstance(c, IOStandard):
return ("IOBUF PORT ", " IO_TYPE=" + c.name)
elif isinstance(c, Misc):
return c.misc
def _format_lpf(signame, pin, others, resname):
fmt_c = [_format_constraint(c) for c in ([Pins(pin)] + others)]
r = ""
for pre, suf in fmt_c:
r += pre + "\"" + signame + "\"" + suf + ";\n"
return r
def _build_lpf(named_sc, named_pc):
r = "BLOCK RESETPATHS;\n"
r += "BLOCK ASYNCPATHS;\n"
for sig, pins, others, resname in named_sc:
if len(pins) > 1:
for i, p in enumerate(pins):
r += _format_lpf(sig + "[" + str(i) + "]", p, others, resname)
else:
r += _format_lpf(sig, pins[0], others, resname)
if named_pc:
r += "\n" + "\n\n".join(named_pc)
return r
def _build_files(device, sources, vincpaths, build_name):
tcl = []
tcl.append("prj_project new -name \"{}\" -impl \"implementation\" -dev {} -synthesis \"synplify\"".format(build_name, device))
for path in vincpaths:
tcl.append("prj_impl option {include path} {\"" + path + "\"}")
for filename, language, library in sources:
tcl.append("prj_src add \"" + filename + "\" -work " + library)
tcl.append("prj_run Synthesis -impl implementation -forceOne")
tcl.append("prj_run Translate -impl implementation")
tcl.append("prj_run Map -impl implementation")
tcl.append("prj_run PAR -impl implementation")
tcl.append("prj_run Export -impl implementation -task Bitgen")
tools.write_to_file(build_name + ".tcl", "\n".join(tcl))
def _run_diamond(build_name, source, ver=None):
if sys.platform == "win32" or sys.platform == "cygwin":
build_script_contents = "REM Autogenerated by mibuild\n"
build_script_contents = "pnmainc " + build_name + ".tcl\n"
build_script_file = "build_" + build_name + ".bat"
tools.write_to_file(build_script_file, build_script_contents)
r = subprocess.call([build_script_file])
shutil.copy(os.path.join("implementation", build_name + "_implementation.bit"), build_name + ".bit")
else:
raise NotImplementedError
if r != 0:
raise OSError("Subprocess failed")
class LatticeDiamondToolchain:
def build(self, platform, fragment, build_dir="build", build_name="top",
diamond_path="/opt/Diamond", run=True):
tools.mkdir_noerror(build_dir)
os.chdir(build_dir)
if not isinstance(fragment, _Fragment):
fragment = fragment.get_fragment()
platform.finalize(fragment)
v_output = platform.get_verilog(fragment)
named_sc, named_pc = platform.resolve_signals(v_output.ns)
v_file = build_name + ".v"
v_output.write(v_file)
sources = platform.sources | {(v_file, "verilog", "work")}
_build_files(platform.device, sources, platform.verilog_include_paths, build_name)
tools.write_to_file(build_name + ".lpf", _build_lpf(named_sc, named_pc))
if run:
_run_diamond(build_name, diamond_path)
os.chdir("..")
return v_output.ns
def add_period_constraint(self, platform, clk, period):
# TODO: handle differential clk
platform.add_platform_command("""FREQUENCY PORT "{clk}" {freq} MHz;""".format(freq=str(float(1/period)*1000), clk="{clk}"), clk=clk)