diff options
Diffstat (limited to 'techlibs/xilinx/synth_xilinx.cc')
| -rw-r--r-- | techlibs/xilinx/synth_xilinx.cc | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index 0a30848aa..db0cbb644 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -77,6 +77,9 @@ struct SynthXilinxPass : public ScriptPass log(" -nowidelut\n"); log(" do not use MUXF[78] resources to implement LUTs larger than LUT6s\n"); log("\n"); + log(" -nodsp\n"); + log(" do not use DSP48E1s to implement multipliers and associated logic\n"); + log("\n"); log(" -widemux <int>\n"); log(" enable inference of hard multiplexer resources (MuxFx) for muxes at or\n"); log(" above this number of inputs (minimum value 5).\n"); @@ -103,7 +106,7 @@ struct SynthXilinxPass : public ScriptPass } std::string top_opt, edif_file, blif_file, family; - bool flatten, retime, vpr, nobram, nodram, nosrl, nocarry, nowidelut, abc9; + bool flatten, retime, vpr, nobram, nodram, nosrl, nocarry, nowidelut, nodsp, abc9; int widemux; void clear_flags() YS_OVERRIDE @@ -121,6 +124,7 @@ struct SynthXilinxPass : public ScriptPass nosrl = false; nocarry = false; nowidelut = false; + nodsp = false; abc9 = false; widemux = 0; } @@ -201,6 +205,10 @@ struct SynthXilinxPass : public ScriptPass abc9 = true; continue; } + if (args[argidx] == "-nodsp") { + nodsp = true; + continue; + } break; } extra_args(args, argidx, design); @@ -239,10 +247,31 @@ struct SynthXilinxPass : public ScriptPass } if (check_label("coarse")) { - if (help_mode) - run("synth -run coarse [-flatten]", "(with '-flatten')"); - else - run("synth -run coarse" + std::string(flatten ? "" : " -flatten"), "(with '-flatten')"); + run("proc"); + if (flatten || help_mode) + run("flatten", "(with '-flatten')"); + run("opt_expr"); + run("opt_clean"); + run("check"); + run("opt"); + run("wreduce"); + run("peepopt"); + run("opt_clean"); + run("share"); + run("techmap -map +/cmp2lut.v -D LUT_WIDTH=4"); + run("opt_expr"); + run("opt_clean"); + if (!nodsp || help_mode) { + run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=25 -D DSP_B_MAXWIDTH=18 -D DSP_NAME=$__MUL25X18"); + run("clean"); + run("techmap -map +/xilinx/dsp_map.v"); + } + run("alumacc"); + run("opt"); + run("fsm"); + run("opt -fast"); + run("memory -nomap"); + run("opt_clean"); if (widemux > 0 || help_mode) run("muxpack", " ('-widemux' only)"); |