diff options
Diffstat (limited to 'techlibs/xilinx/synth_xilinx.cc')
| -rw-r--r-- | techlibs/xilinx/synth_xilinx.cc | 53 |
1 files changed, 45 insertions, 8 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index 6f8254b59..6566da832 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -343,14 +343,51 @@ struct SynthXilinxPass : public ScriptPass if (!nodsp || help_mode) { run("memory_dff"); // xilinx_dsp will merge registers, reserve memory port registers first // NB: Xilinx multipliers are signed only - run("techmap -map +/mul2dsp.v -map +/xilinx/dsp_map.v -D DSP_A_MAXWIDTH=25 " - "-D DSP_A_MAXWIDTH_PARTIAL=18 -D DSP_B_MAXWIDTH=18 " // Partial multipliers are intentionally - // limited to 18x18 in order to take - // advantage of the (PCOUT << 17) -> PCIN - // dedicated cascade chain capability - "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers - "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller - "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18"); + if (help_mode) + run("techmap -map +/mul2dsp.v -map +/xilinx/{family}_dsp_map.v {options}"); + else if (family == "xc2v" || family == "xc3s" || family == "xc3se" || family == "xc3sa") + run("techmap -map +/mul2dsp.v -map +/xilinx/xc3s_mult_map.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 " + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL18X18"); + else if (family == "xc3sda") + run("techmap -map +/mul2dsp.v -map +/xilinx/xc3sda_dsp_map.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 " + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL18X18"); + else if (family == "xc6s") + run("techmap -map +/mul2dsp.v -map +/xilinx/xc6s_dsp_map.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 " + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL18X18"); + else if (family == "xc4v") + run("techmap -map +/mul2dsp.v -map +/xilinx/xc4v_dsp_map.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 " + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL18X18"); + else if (family == "xc5v") + run("techmap -map +/mul2dsp.v -map +/xilinx/xc5v_dsp_map.v -D DSP_A_MAXWIDTH=25 -D DSP_B_MAXWIDTH=18 " + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18"); + else if (family == "xc6v" || family == "xc7") + run("techmap -map +/mul2dsp.v -map +/xilinx/xc7_dsp_map.v -D DSP_A_MAXWIDTH=25 -D DSP_B_MAXWIDTH=18 " + "-D DSP_A_MAXWIDTH_PARTIAL=18 " // Partial multipliers are intentionally + // limited to 18x18 in order to take + // advantage of the (PCOUT << 17) -> PCIN + // dedicated cascade chain capability + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18"); + else if (family == "xcu" || family == "xcup") + run("techmap -map +/mul2dsp.v -map +/xilinx/xcu_dsp_map.v -D DSP_A_MAXWIDTH=27 -D DSP_B_MAXWIDTH=18 " + "-D DSP_A_MAXWIDTH_PARTIAL=18 " // Partial multipliers are intentionally + // limited to 18x18 in order to take + // advantage of the (PCOUT << 17) -> PCIN + // dedicated cascade chain capability + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL27X18"); run("select a:mul2dsp"); run("setattr -unset mul2dsp"); run("opt_expr -fine"); |