diff options
Diffstat (limited to 'techlibs/ecp5/synth_ecp5.cc')
| -rw-r--r-- | techlibs/ecp5/synth_ecp5.cc | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/techlibs/ecp5/synth_ecp5.cc b/techlibs/ecp5/synth_ecp5.cc index 2593546e0..1f5b1cb6b 100644 --- a/techlibs/ecp5/synth_ecp5.cc +++ b/techlibs/ecp5/synth_ecp5.cc @@ -89,6 +89,9 @@ struct SynthEcp5Pass : public ScriptPass log(" generate an output netlist (and BLIF file) suitable for VPR\n"); log(" (this feature is experimental and incomplete)\n"); log("\n"); + log(" -nodsp\n"); + log(" do not map multipliers to MULT18X18D\n"); + log("\n"); log("\n"); log("The following commands are executed by this synthesis command:\n"); help_script(); @@ -96,7 +99,7 @@ struct SynthEcp5Pass : public ScriptPass } string top_opt, blif_file, edif_file, json_file; - bool noccu2, nodffe, nobram, nolutram, nowidelut, flatten, retime, abc2, abc9, vpr; + bool noccu2, nodffe, nobram, nolutram, nowidelut, flatten, retime, abc2, abc9, nodsp, vpr; void clear_flags() YS_OVERRIDE { @@ -114,6 +117,7 @@ struct SynthEcp5Pass : public ScriptPass abc2 = false; vpr = false; abc9 = false; + nodsp = false; } void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE @@ -192,6 +196,10 @@ struct SynthEcp5Pass : public ScriptPass abc9 = true; continue; } + if (args[argidx] == "-nodsp") { + nodsp = true; + continue; + } break; } extra_args(args, argidx, design); @@ -218,17 +226,34 @@ struct SynthEcp5Pass : public ScriptPass run(stringf("hierarchy -check %s", help_mode ? "-top <top>" : top_opt.c_str())); } - if (flatten && check_label("flatten", "(unless -noflatten)")) + if (check_label("coarse")) { run("proc"); - run("flatten"); + if (flatten || help_mode) + run("flatten"); run("tribuf -logic"); run("deminout"); - } - - if (check_label("coarse")) - { - run("synth -run coarse"); + 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) { + run("techmap -map +/mul2dsp.v -map +/ecp5/dsp_map.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 -D DSP_NAME=$__MUL18X18", "(unless -nodsp)"); + run("chtype -set $mul t:$__soft_mul", "(unless -nodsp)"); + } + run("alumacc"); + run("opt"); + run("fsm"); + run("opt -fast"); + run("memory -nomap"); + run("opt_clean"); } if (!nobram && check_label("map_bram", "(skip if -nobram)")) |