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xilinx: Add URAM288 mapping for xcup

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2019-10-18 14:02:57 +01:00
parent 6769d31ddb
commit 3506eaf290
5 changed files with 92 additions and 2 deletions
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24
techlibs/xilinx/synth_xilinx.cc
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@ -93,6 +93,9 @@ struct SynthXilinxPass : public ScriptPass
log(" -noclkbuf\n");
log(" disable automatic clock buffer insertion\n");
log("\n");
log(" -uram\n");
log(" infer URAM288s for large memories (xcup only)\n");
log("\n");
log(" -widemux <int>\n");
log(" enable inference of hard multiplexer resources (MUXF[78]) for muxes at or\n");
log(" above this number of inputs (minimum value 2, recommended value >= 5).\n");
@ -119,7 +122,7 @@ struct SynthXilinxPass : public ScriptPass
}
std::string top_opt, edif_file, blif_file, family;
bool flatten, retime, vpr, ise, iopad, noiopad, noclkbuf, nobram, nolutram, nosrl, nocarry, nowidelut, nodsp, abc9;
bool flatten, retime, vpr, ise, iopad, noiopad, noclkbuf, nobram, nolutram, nosrl, nocarry, nowidelut, nodsp, uram, abc9;
bool flatten_before_abc;
int widemux;
@ -143,6 +146,7 @@ struct SynthXilinxPass : public ScriptPass
nocarry = false;
nowidelut = false;
nodsp = false;
uram = false;
abc9 = false;
flatten_before_abc = false;
widemux = 0;
@ -248,6 +252,10 @@ struct SynthXilinxPass : public ScriptPass
nodsp = true;
continue;
}
if (args[argidx] == "-uram") {
uram = true;
continue;
}
break;
}
extra_args(args, argidx, design);
@ -410,6 +418,20 @@ struct SynthXilinxPass : public ScriptPass
run("opt_clean");
}
if (check_label("map_uram", "(only if '-uram')")) {
if (help_mode) {
run("memory_bram -rules +/xilinx/{family}_urams.txt");
run("techmap -map +/xilinx/{family}_urams_map.v");
} else if (uram) {
if (family == "xcup") {
run("memory_bram -rules +/xilinx/xcup_urams.txt");
run("techmap -map +/xilinx/xcup_urams_map.v");
} else {
log_warning("UltraRAM inference not supported for family %s.\n", family.c_str());
}
}
}
if (check_label("map_bram", "(skip if '-nobram')")) {
if (help_mode) {
run("memory_bram -rules +/xilinx/{family}_brams.txt");