diff options
Diffstat (limited to 'techlibs/gowin/synth_gowin.cc')
| -rw-r--r-- | techlibs/gowin/synth_gowin.cc | 40 |
1 files changed, 28 insertions, 12 deletions
diff --git a/techlibs/gowin/synth_gowin.cc b/techlibs/gowin/synth_gowin.cc index cfbc9b9a6..15a0c41e0 100644 --- a/techlibs/gowin/synth_gowin.cc +++ b/techlibs/gowin/synth_gowin.cc @@ -81,6 +81,11 @@ struct SynthGowinPass : public ScriptPass log(" -abc9\n"); log(" use new ABC9 flow (EXPERIMENTAL)\n"); log("\n"); + log(" -no-rw-check\n"); + log(" marks all recognized read ports as \"return don't-care value on\n"); + log(" read/write collision\" (same result as setting the no_rw_check\n"); + log(" attribute on all memories).\n"); + log("\n"); log("\n"); log("The following commands are executed by this synthesis command:\n"); help_script(); @@ -88,7 +93,7 @@ struct SynthGowinPass : public ScriptPass } string top_opt, vout_file, json_file; - bool retime, nobram, nolutram, flatten, nodffe, nowidelut, abc9, noiopads, noalu; + bool retime, nobram, nolutram, flatten, nodffe, nowidelut, abc9, noiopads, noalu, no_rw_check; void clear_flags() override { @@ -104,6 +109,7 @@ struct SynthGowinPass : public ScriptPass abc9 = false; noiopads = false; noalu = false; + no_rw_check = false; } void execute(std::vector<std::string> args, RTLIL::Design *design) override @@ -172,6 +178,10 @@ struct SynthGowinPass : public ScriptPass noiopads = true; continue; } + if (args[argidx] == "-no-rw-check") { + no_rw_check = true; + continue; + } break; } extra_args(args, argidx, design); @@ -189,6 +199,12 @@ struct SynthGowinPass : public ScriptPass void script() override { + std::string no_rw_check_opt = ""; + if (no_rw_check) + no_rw_check_opt = " -no-rw-check"; + if (help_mode) + no_rw_check_opt = " [-no-rw-check]"; + if (check_label("begin")) { run("read_verilog -specify -lib +/gowin/cells_sim.v"); @@ -205,20 +221,20 @@ struct SynthGowinPass : public ScriptPass if (check_label("coarse")) { - run("synth -run coarse"); - } - - if (!nobram && check_label("map_bram", "(skip if -nobram)")) - { - run("memory_bram -rules +/gowin/brams.txt"); - run("techmap -map +/gowin/brams_map.v"); + run("synth -run coarse" + no_rw_check_opt); } - if (!nolutram && check_label("map_lutram", "(skip if -nolutram)")) + if (check_label("map_ram")) { - run("memory_bram -rules +/gowin/lutrams.txt"); - run("techmap -map +/gowin/lutrams_map.v"); - run("setundef -params -zero t:RAM16S4"); + std::string args = ""; + if (nobram) + args += " -no-auto-block"; + if (nolutram) + args += " -no-auto-distributed"; + if (help_mode) + args += " [-no-auto-block] [-no-auto-distributed]"; + run("memory_libmap -lib +/gowin/lutrams.txt -lib +/gowin/brams.txt" + args, "(-no-auto-block if -nobram, -no-auto-distributed if -nolutram)"); + run("techmap -map +/gowin/lutrams_map.v -map +/gowin/brams_map.v"); } if (check_label("map_ffram")) |