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gowin: add and test dff init values

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This commit is contained in:
Pepijn de Vos 2019-11-25 14:33:21 +01:00
parent db2268703f
commit 6c79abbf5a
4 changed files with 495 additions and 41 deletions
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15
techlibs/gowin/synth_gowin.cc
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@ -67,6 +67,9 @@ struct SynthGowinPass : public ScriptPass
log(" -nowidelut\n");
log(" do not use muxes to implement LUTs larger than LUT4s\n");
log("\n");
log(" -noiopads\n");
log(" do not emit IOB at top level ports\n");
log("\n");
log(" -abc9\n");
log(" use new ABC9 flow (EXPERIMENTAL)\n");
log("\n");
@ -77,7 +80,7 @@ struct SynthGowinPass : public ScriptPass
}
string top_opt, vout_file;
bool retime, nobram, nodram, flatten, nodffe, nowidelut, abc9;
bool retime, nobram, nodram, flatten, nodffe, nowidelut, abc9, noiopads;
void clear_flags() YS_OVERRIDE
{
@ -90,6 +93,7 @@ struct SynthGowinPass : public ScriptPass
nodram = false;
nowidelut = false;
abc9 = false;
noiopads = false;
}
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
@ -144,6 +148,10 @@ struct SynthGowinPass : public ScriptPass
abc9 = true;
continue;
}
if (args[argidx] == "-noiopads") {
noiopads = true;
continue;
}
break;
}
extra_args(args, argidx, design);
@ -236,8 +244,9 @@ struct SynthGowinPass : public ScriptPass
run("techmap -map +/gowin/cells_map.v");
run("setundef -undriven -params -zero");
run("hilomap -singleton -hicell VCC V -locell GND G");
run("iopadmap -bits -inpad IBUF O:I -outpad OBUF I:O "
"-toutpad TBUF OEN:I:O -tinoutpad IOBUF OEN:O:I:IO", "(unless -noiopads)");
if (!noiopads || help_mode)
run("iopadmap -bits -inpad IBUF O:I -outpad OBUF I:O "
"-toutpad TBUF OEN:I:O -tinoutpad IOBUF OEN:O:I:IO", "(unless -noiopads)");
run("clean");
}