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Diffstat (limited to 'techlibs/intel/cyclonev/cells_map.v')
| -rw-r--r-- | techlibs/intel/cyclonev/cells_map.v | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/techlibs/intel/cyclonev/cells_map.v b/techlibs/intel/cyclonev/cells_map.v new file mode 100644 index 00000000..bd60d4e1 --- /dev/null +++ b/techlibs/intel/cyclonev/cells_map.v @@ -0,0 +1,162 @@ +/* + * yosys -- Yosys Open SYnthesis Suite + * + * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ +// > c60k28 (Viacheslav, VT) [at] yandex [dot] com +// > Intel FPGA technology mapping. User must first simulate the generated \ +// > netlist before going to test it on board. +// > Changelog: 1) The missing power_up parameter in the techmap introduces a problem in Quartus mapper. Fixed. +// 2) Cyclone V 7-input LUT function was wrong implemented. Removed abc option to map this function \ +// and added the explanation in this file instead. Such function needs to be implemented. + +// Normal mode DFF negedge clk, negedge reset +module \$_DFF_N_ (input D, C, output Q); + parameter WYSIWYG="TRUE"; + parameter power_up=1'bx; + dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(1'b1), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0)); +endmodule +// Normal mode DFF +module \$_DFF_P_ (input D, C, output Q); + parameter WYSIWYG="TRUE"; + parameter power_up=1'bx; + dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(1'b1), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0)); +endmodule + +// Async Active Low Reset DFF +module \$_DFF_PN0_ (input D, C, R, output Q); + parameter WYSIWYG="TRUE"; + parameter power_up=1'bx; + dffeas #(.is_wysiwyg(WYSIWYG), .power_up("power_up")) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(R), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0)); +endmodule +// Async Active High Reset DFF +module \$_DFF_PP0_ (input D, C, R, output Q); + parameter WYSIWYG="TRUE"; + parameter power_up=1'bx; + wire R_i = ~ R; + dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(R_i), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(1'b0), .sload(1'b0)); +endmodule + +module \$__DFFE_PP0 (input D, C, E, R, output Q); + parameter WYSIWYG="TRUE"; + parameter power_up=1'bx; + wire E_i = ~ E; + dffeas #(.is_wysiwyg(WYSIWYG), .power_up(power_up)) _TECHMAP_REPLACE_ (.d(D), .q(Q), .clk(C), .clrn(R), .prn(1'b1), .ena(1'b1), .asdata(1'b0), .aload(1'b0), .sclr(E_i), .sload(1'b0)); +endmodule + +// Input buffer map +module \$__inpad (input I, output O); + cyclonev_io_ibuf _TECHMAP_REPLACE_ (.o(O), .i(I), .ibar(1'b0)); +endmodule + +// Output buffer map +module \$__outpad (input I, output O); + cyclonev_io_obuf _TECHMAP_REPLACE_ (.o(O), .i(I), .oe(1'b1)); +endmodule + +// LUT Map +module \$lut (A, Y); + parameter WIDTH = 0; + parameter LUT = 0; + input [WIDTH-1:0] A; + output Y; + wire VCC; + wire GND; + assign {VCC,GND} = {1'b1,1'b0}; + + generate + if (WIDTH == 1) begin + assign Y = ~A[0]; // Not need to spend 1 logic cell for such an easy function + end + else + if (WIDTH == 2) begin + cyclonev_lcell_comb #(.lut_mask({16{LUT}}), .shared_arith("off"), .extended_lut("off")) + _TECHMAP_REPLACE_ + (.combout(Y), + .dataa(A[0]), + .datab(A[1]), + .datac(VCC), + .datad(VCC), + .datae(VCC), + .dataf(VCC), + .datag(VCC)); + end + else + if(WIDTH == 3) begin + cyclonev_lcell_comb #(.lut_mask({8{LUT}}), .shared_arith("off"), .extended_lut("off")) + _TECHMAP_REPLACE_ + (.combout(Y), + .dataa(A[0]), + .datab(A[1]), + .datac(A[2]), + .datad(VCC), + .datae(VCC), + .dataf(VCC), + .datag(VCC)); + end + else + if(WIDTH == 4) begin + cyclonev_lcell_comb #(.lut_mask({4{LUT}}), .shared_arith("off"), .extended_lut("off")) + _TECHMAP_REPLACE_ + (.combout(Y), + .dataa(A[0]), + .datab(A[1]), + .datac(A[2]), + .datad(A[3]), + .datae(VCC), + .dataf(VCC), + .datag(VCC)); + end + else + if(WIDTH == 5) begin + cyclonev_lcell_comb #(.lut_mask({2{LUT}}), .shared_arith("off"), .extended_lut("off")) + _TECHMAP_REPLACE_ + (.combout(Y), + .dataa(A[0]), + .datab(A[1]), + .datac(A[2]), + .datad(A[3]), + .datae(A[4]), + .dataf(VCC), + .datag(VCC)); + end + else + if(WIDTH == 6) begin + cyclonev_lcell_comb #(.lut_mask(LUT), .shared_arith("off"), .extended_lut("off")) + _TECHMAP_REPLACE_ + (.combout(Y), + .dataa(A[0]), + .datab(A[1]), + .datac(A[2]), + .datad(A[3]), + .datae(A[4]), + .dataf(A[5]), + .datag(VCC)); + end + /*else + if(WIDTH == 7) begin + TODO: There's not a just 7-input function on Cyclone V, see the following note: + **Extended LUT Mode** + Use extended LUT mode to implement a specific set of 7-input functions. The set must + be a 2-to-1 multiplexer fed by two arbitrary 5-input functions sharing four inputs. + [source](Device Interfaces and Integration Basics for Cyclone V Devices). + end*/ + else + wire _TECHMAP_FAIL_ = 1; + endgenerate +endmodule // lut + + |