From fda94311ee6e3ec8de0e85e91251a2744673abaf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marcin=20Ko=C5=9Bcielnicki?= Date: Fri, 16 Aug 2019 03:14:30 +0000 Subject: synth_xilinx: Support init values on Spartan 6 flip-flops properly. --- techlibs/xilinx/synth_xilinx.cc | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) (limited to 'techlibs/xilinx/synth_xilinx.cc') diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index bfc0ac2bf..e0e81ef1d 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -266,6 +266,14 @@ struct SynthXilinxPass : public ScriptPass void script() YS_OVERRIDE { + std::string ff_map_file; + if (help_mode) + ff_map_file = "+/xilinx/xc6s_ff_map.v"; + else if (family == "xc6s") + ff_map_file = "+/xilinx/xc6s_ff_map.v"; + else + ff_map_file = "+/xilinx/xc7_ff_map.v"; + if (check_label("begin")) { if (vpr) run("read_verilog -lib -D_EXPLICIT_CARRY +/xilinx/cells_sim.v"); @@ -416,11 +424,9 @@ struct SynthXilinxPass : public ScriptPass } if (check_label("map_ffs")) { - if (abc9 || help_mode) { - run("techmap -map +/xilinx/ff_map.v", "('-abc9' only)"); - run("dffinit -ff FDRE Q INIT -ff FDCE Q INIT -ff FDPE Q INIT -ff FDSE Q INIT " - "-ff FDRE_1 Q INIT -ff FDCE_1 Q INIT -ff FDPE_1 Q INIT -ff FDSE_1 Q INIT", "('-abc9' only)"); - } + if (abc9 || help_mode) { + run("techmap -map " + ff_map_file, "('-abc9' only)"); + } } if (check_label("map_luts")) { @@ -453,15 +459,12 @@ struct SynthXilinxPass : public ScriptPass run("xilinx_srl -fixed -minlen 3", "(skip if '-nosrl')"); std::string techmap_args = "-map +/xilinx/lut_map.v -map +/xilinx/cells_map.v"; if (help_mode) - techmap_args += " [-map +/xilinx/ff_map.v]"; + techmap_args += " [-map " + ff_map_file + "]"; else if (abc9) techmap_args += " -map +/xilinx/abc_unmap.v"; else - techmap_args += " -map +/xilinx/ff_map.v"; + techmap_args += " -map " + ff_map_file; run("techmap " + techmap_args); - if (!abc9 || help_mode) - run("dffinit -ff FDRE Q INIT -ff FDCE Q INIT -ff FDPE Q INIT -ff FDSE Q INIT " - "-ff FDRE_1 Q INIT -ff FDCE_1 Q INIT -ff FDPE_1 Q INIT -ff FDSE_1 Q INIT", "(without '-abc9' only)"); run("clean"); } -- cgit v1.2.3