diff options
| -rw-r--r-- | techlibs/xilinx/cells_map.v | 8 | ||||
| -rw-r--r-- | techlibs/xilinx/ff_map.v | 13 | ||||
| -rw-r--r-- | techlibs/xilinx/synth_xilinx.cc | 43 |
3 files changed, 30 insertions, 34 deletions
diff --git a/techlibs/xilinx/cells_map.v b/techlibs/xilinx/cells_map.v index 704ab21b1..b29238a12 100644 --- a/techlibs/xilinx/cells_map.v +++ b/techlibs/xilinx/cells_map.v @@ -17,6 +17,14 @@ * */ +// Convert negative-polarity reset to positive-polarity +module \$_DFF_NN0_ (input D, C, R, output Q); \$_DFF_NP0_ _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule +module \$_DFF_PN0_ (input D, C, R, output Q); \$_DFF_PP0_ _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule + +module \$_DFF_NN1_ (input D, C, R, output Q); \$_DFF_NP1 _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule +module \$_DFF_PN1_ (input D, C, R, output Q); \$_DFF_PP1 _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule + + module \$__SHREG_ (input C, input D, input E, output Q); parameter DEPTH = 0; parameter [DEPTH-1:0] INIT = 0; diff --git a/techlibs/xilinx/ff_map.v b/techlibs/xilinx/ff_map.v index c61fd7070..13beaa6ae 100644 --- a/techlibs/xilinx/ff_map.v +++ b/techlibs/xilinx/ff_map.v @@ -22,26 +22,21 @@ `ifndef _NO_FFS -`ifndef _NO_POS_SR module \$_DFF_N_ (input D, C, output Q); FDRE_1 #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .R(1'b0)); endmodule module \$_DFF_P_ (input D, C, output Q); FDRE #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .R(1'b0)); endmodule module \$_DFFE_NP_ (input D, C, E, output Q); FDRE_1 #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(E), .R(1'b0)); endmodule module \$_DFFE_PP_ (input D, C, E, output Q); FDRE #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(E), .R(1'b0)); endmodule +module \$_DFF_NN0_ (input D, C, R, output Q); FDCE_1 #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR(!R)); endmodule module \$_DFF_NP0_ (input D, C, R, output Q); FDCE_1 #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR( R)); endmodule +module \$_DFF_PN0_ (input D, C, R, output Q); FDCE #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR(!R)); endmodule module \$_DFF_PP0_ (input D, C, R, output Q); FDCE #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .CLR( R)); endmodule +module \$_DFF_NN1_ (input D, C, R, output Q); FDPE_1 #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE(!R)); endmodule module \$_DFF_NP1_ (input D, C, R, output Q); FDPE_1 #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE( R)); endmodule +module \$_DFF_PN1_ (input D, C, R, output Q); FDPE #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE(!R)); endmodule module \$_DFF_PP1_ (input D, C, R, output Q); FDPE #(.INIT(|0)) _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .CE(1'b1), .PRE( R)); endmodule -`endif - -module \$_DFF_NN0_ (input D, C, R, output Q); \$_DFF_NP0_ _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule -module \$_DFF_PN0_ (input D, C, R, output Q); \$_DFF_PP0_ _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule - -module \$_DFF_NN1_ (input D, C, R, output Q); \$_DFF_NP1 _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule -module \$_DFF_PN1_ (input D, C, R, output Q); \$_DFF_PP1 _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule -`endif `endif diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index c4c27d816..8aa7b508e 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -205,45 +205,41 @@ struct SynthXilinxPass : public ScriptPass } if (check_label("fine")) { - run("opt -fast"); + // shregmap -tech xilinx can cope with $shiftx and $mux + // cells for identifiying variable-length shift registers, + // so attempt to convert $pmux-es to the former + if (!nosrl || help_mode) + run("pmux2shiftx", "(skip if '-nosrl')"); + + run("opt -fast -full"); run("memory_map"); run("dffsr2dff"); run("dff2dffe"); + run("opt -full"); if (!vpr || help_mode) run("techmap -map +/xilinx/arith_map.v"); else run("techmap -map +/xilinx/arith_map.v -D _EXPLICIT_CARRY"); - run("hierarchy -check"); - run("opt -fast"); - } - - if (check_label("map_cells")) - { if (!nosrl || help_mode) { // shregmap operates on bit-level flops, not word-level, // so break those down here run("simplemap t:$dff t:$dffe", "(skip if '-nosrl')"); - // shregmap -tech xilinx can cope with $shiftx and $mux - // cells for identifiying variable-length shift registers, - // so attempt to convert $pmux-es to the former - run("pmux2shiftx", "(skip if '-nosrl')"); - // pmux2shiftx can leave behind a $pmux with a single entry - // -- need this to clean that up before shregmap - run("opt_expr -mux_undef", "(skip if '-nosrl')"); // shregmap with '-tech xilinx' infers variable length shift regs run("shregmap -tech xilinx -minlen 3", "(skip if '-nosrl')"); } - run("techmap -map +/xilinx/cells_map.v"); + run("techmap"); + run("opt -fast"); + } + + if (check_label("map_cells")) { + run("techmap -map +/techmap.v -map +/xilinx/cells_map.v"); run("clean"); } - if (check_label("map_luts")) - { - run("opt -full"); - run("techmap -map +/techmap.v -D _NO_POS_SR -map +/xilinx/ff_map.v"); + if (check_label("map_luts")) { if (help_mode) run("abc -luts 2:2,3,6:5,10,20 [-dff]"); else @@ -259,21 +255,18 @@ struct SynthXilinxPass : public ScriptPass run("clean"); } - if (check_label("check")) - { + if (check_label("check")) { run("hierarchy -check"); run("stat"); run("check -noinit"); } - if (check_label("edif")) - { + if (check_label("edif")) { if (!edif_file.empty() || help_mode) run(stringf("write_edif -pvector bra %s", edif_file.c_str())); } - if (check_label("blif")) - { + if (check_label("blif")) { if (!blif_file.empty() || help_mode) run(stringf("write_blif %s", edif_file.c_str())); } |