diff options
Diffstat (limited to 'techlibs/xilinx/synth_xilinx.cc')
| -rw-r--r-- | techlibs/xilinx/synth_xilinx.cc | 81 |
1 files changed, 68 insertions, 13 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index 546d67337..2bd8570ec 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -63,14 +63,17 @@ struct SynthXilinxPass : 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(" -ise\n"); + log(" generate an output netlist suitable for ISE (enables -iopad)\n"); + log("\n"); log(" -nobram\n"); - log(" disable inference of block rams\n"); + log(" do not use block RAM cells in output netlist\n"); log("\n"); - log(" -nodram\n"); - log(" disable inference of distributed rams\n"); + log(" -nolutram\n"); + log(" do not use distributed RAM cells in output netlist\n"); log("\n"); log(" -nosrl\n"); - log(" disable inference of shift registers\n"); + log(" do not use distributed SRL cells in output netlist\n"); log("\n"); log(" -nocarry\n"); log(" do not use XORCY/MUXCY/CARRY4 cells in output netlist\n"); @@ -80,6 +83,14 @@ struct SynthXilinxPass : public ScriptPass log("\n"); log(" -nodsp\n"); log(" do not use DSP48E1s to implement multipliers and associated logic\n"); + log(" -iopad\n"); + log(" enable I/O buffer insertion (selected automatically by -ise)\n"); + log("\n"); + log(" -noiopad\n"); + log(" disable I/O buffer insertion (only useful with -ise)\n"); + log("\n"); + log(" -noclkbuf\n"); + log(" disable automatic clock buffer insertion\n"); log("\n"); log(" -widemux <int>\n"); log(" enable inference of hard multiplexer resources (MUXF[78]) for muxes at or\n"); @@ -108,6 +119,8 @@ struct SynthXilinxPass : public ScriptPass std::string top_opt, edif_file, blif_file, family; bool flatten, retime, vpr, nobram, nodram, nosrl, nocarry, nowidelut, nodsp, abc9; + bool flatten, retime, vpr, ise, iopad, noiopad, noclkbuf, nobram, nolutram, nosrl, nocarry, nowidelut, nodsp, abc9; + bool flatten_before_abc; int widemux; void clear_flags() YS_OVERRIDE @@ -119,14 +132,19 @@ struct SynthXilinxPass : public ScriptPass flatten = false; retime = false; vpr = false; + ise = false; + iopad = false; + noiopad = false; + noclkbuf = false; nocarry = false; nobram = false; - nodram = false; + nolutram = false; nosrl = false; nocarry = false; nowidelut = false; nodsp = false; abc9 = false; + flatten_before_abc = false; widemux = 0; } @@ -166,6 +184,10 @@ struct SynthXilinxPass : public ScriptPass flatten = true; continue; } + if (args[argidx] == "-flatten_before_abc") { + flatten_before_abc = true; + continue; + } if (args[argidx] == "-retime") { retime = true; continue; @@ -182,6 +204,22 @@ struct SynthXilinxPass : public ScriptPass vpr = true; continue; } + if (args[argidx] == "-ise") { + ise = true; + continue; + } + if (args[argidx] == "-iopad") { + iopad = true; + continue; + } + if (args[argidx] == "-noiopad") { + noiopad = true; + continue; + } + if (args[argidx] == "-noclkbuf") { + noclkbuf = true; + continue; + } if (args[argidx] == "-nocarry") { nocarry = true; continue; @@ -190,8 +228,8 @@ struct SynthXilinxPass : public ScriptPass nobram = true; continue; } - if (args[argidx] == "-nodram") { - nodram = true; + if (args[argidx] == "-nolutram" || /*deprecated alias*/ args[argidx] == "-nodram") { + nolutram = true; continue; } if (args[argidx] == "-nosrl") { @@ -306,7 +344,7 @@ struct SynthXilinxPass : public ScriptPass run("opt_clean"); } - if (check_label("bram", "(skip if '-nobram')")) { + if (check_label("map_bram", "(skip if '-nobram')")) { if (help_mode) { run("memory_bram -rules +/xilinx/{family}_brams.txt"); run("techmap -map +/xilinx/{family}_brams_map.v"); @@ -323,20 +361,23 @@ struct SynthXilinxPass : public ScriptPass } } - if (check_label("dram", "(skip if '-nodram')")) { - if (!nodram || help_mode) { - run("memory_bram -rules +/xilinx/drams.txt"); - run("techmap -map +/xilinx/drams_map.v"); + if (check_label("map_lutram", "(skip if '-nolutram')")) { + if (!nolutram || help_mode) { + run("memory_bram -rules +/xilinx/lutrams.txt"); + run("techmap -map +/xilinx/lutrams_map.v"); } } - if (check_label("fine")) { + if (check_label("map_ffram")) { if (widemux > 0) run("opt -fast -mux_bool -undriven -fine"); // Necessary to omit -mux_undef otherwise muxcover // performs less efficiently else run("opt -fast -full"); run("memory_map"); + } + + if (check_label("fine")) { run("dffsr2dff"); run("dff2dffe"); if (help_mode) { @@ -404,6 +445,8 @@ struct SynthXilinxPass : public ScriptPass if (check_label("map_luts")) { run("opt_expr -mux_undef"); + if (flatten_before_abc) + run("flatten"); if (help_mode) run("abc -luts 2:2,3,6:5[,10,20] [-dff]", "(option for 'nowidelut', option for '-retime')"); else if (abc9) { @@ -432,6 +475,18 @@ struct SynthXilinxPass : public ScriptPass run("clean"); } + if (check_label("finalize")) { + bool do_iopad = iopad || (ise && !noiopad); + if (help_mode || !noclkbuf) { + if (help_mode || do_iopad) + run("clkbufmap -buf BUFG O:I -inpad IBUFG O:I", "(skip if '-noclkbuf', '-inpad' passed if '-iopad' or '-ise' and not '-noiopad')"); + else + run("clkbufmap -buf BUFG O:I"); + } + if (do_iopad) + run("iopadmap -bits -outpad OBUF I:O -inpad IBUF O:I A:top", "(only if '-iopad' or '-ise' and not '-noiopad')"); + } + if (check_label("check")) { run("hierarchy -check"); run("stat -tech xilinx"); |