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fabulous: add -clkbuf-map option, map to $__FABULOUS_GBUF

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Signed-off-by: Leo Moser <leomoser99@gmail.com>
This commit is contained in:
Leo Moser 2026-06-24 14:29:14 +02:00
parent ec8155e040
commit d72cca2945
1 changed files with 20 additions and 1 deletions
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21
techlibs/fabulous/synth_fabulous.cc
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@ -58,6 +58,9 @@ struct SynthPass : public ScriptPass
log(" -ff <cell_type_pattern> <init_values>\n");
log(" convert FFs to cell types via dfflegalize (can be specified multiple times).\n");
log("\n");
log(" -clkbuf-map <clkbuf_map>\n");
log(" insert clock buffers using clkbufmap and map to the specified Verilog file.\n");
log("\n");
log(" -extra-plib <primitive_library.v>\n");
log(" use the specified Verilog file for extra primitives (can be specified multiple\n");
log(" times).\n");
@ -109,7 +112,7 @@ struct SynthPass : public ScriptPass
log("\n");
}
string top_module, json_file, blif_file, fsm_opts, memory_opts, carry_mode;
string top_module, json_file, blif_file, fsm_opts, memory_opts, carry_mode, clkbuf_map;
std::vector<string> extra_plib, extra_map, extra_mlibmap;
std::vector<std::pair<string, string>> extra_ffs;
@ -176,6 +179,10 @@ struct SynthPass : public ScriptPass
extra_ffs.push_back({cell, init});
continue;
}
if (args[argidx] == "-clkbuf-map" && argidx+1 < args.size()) {
clkbuf_map = args[++argidx];
continue;
}
if (args[argidx] == "-extra-plib" && argidx+1 < args.size()) {
extra_plib.push_back(args[++argidx]);
continue;
@ -361,6 +368,18 @@ struct SynthPass : public ScriptPass
run(stringf("techmap -D LUT_K=%d -map +/fabulous/cells_map.v", lut));
run("clean");
}
if (check_label("map_clkbufs")) {
if (help_mode) {
run("clkbufmap -buf $__FABULOUS_GBUF OUT:IN", "(if -clkbuf-map <clkbuf_map.v>)");
run("techmap -map <clkbuf_map.v>", "(if -clkbuf-map <clkbuf_map.v>)");
} else if (clkbuf_map != "") {
run("clkbufmap -buf $__FABULOUS_GBUF OUT:IN");
run(stringf("techmap -map %s", clkbuf_map));
run("clean");
}
}
if (check_label("check")) {
run("hierarchy -check");
run("stat");