diff options
Diffstat (limited to 'techlibs/intel/cyclonev')
-rwxr-xr-x | techlibs/intel/cyclonev/cells_arith.v | 65 | ||||
-rwxr-xr-x | techlibs/intel/cyclonev/cells_map.v | 151 | ||||
-rwxr-xr-x | techlibs/intel/cyclonev/cells_sim.v | 144 |
3 files changed, 360 insertions, 0 deletions
diff --git a/techlibs/intel/cyclonev/cells_arith.v b/techlibs/intel/cyclonev/cells_arith.v new file mode 100755 index 000000000..470b686bb --- /dev/null +++ b/techlibs/intel/cyclonev/cells_arith.v @@ -0,0 +1,65 @@ +/* + * 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. + * + */ + +// NOTE: This is still WIP. +(* techmap_celltype = "$alu" *) +module _80_altera_a10gx_alu (A, B, CI, BI, X, Y, CO); + parameter A_SIGNED = 0; + parameter B_SIGNED = 0; + parameter A_WIDTH = 1; + parameter B_WIDTH = 1; + parameter Y_WIDTH = 1; + + input [A_WIDTH-1:0] A; + input [B_WIDTH-1:0] B; + output [Y_WIDTH-1:0] X, Y; + + input CI, BI; + //output [Y_WIDTH-1:0] CO; + output CO; + + wire _TECHMAP_FAIL_ = Y_WIDTH <= 4; + + wire [Y_WIDTH-1:0] A_buf, B_buf; + \$pos #(.A_SIGNED(A_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); + \$pos #(.A_SIGNED(B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); + + wire [Y_WIDTH-1:0] AA = A_buf; + wire [Y_WIDTH-1:0] BB = BI ? ~B_buf : B_buf; + //wire [Y_WIDTH:0] C = {CO, CI}; + wire [Y_WIDTH+1:0] COx; + wire [Y_WIDTH+1:0] C = {COx, CI}; + + /* Start implementation */ + (* keep *) fiftyfivenm_lcell_comb #(.lut_mask(16'b0000_0000_1010_1010), .sum_lutc_input("cin")) carry_start (.cout(COx[0]), .dataa(C[0]), .datab(1'b1), .datac(1'b1), .datad(1'b1)); + + genvar i; + generate for (i = 0; i < Y_WIDTH; i = i + 1) begin: slice + if(i==Y_WIDTH-1) begin + (* keep *) fiftyfivenm_lcell_comb #(.lut_mask(16'b1111_0000_1110_0000), .sum_lutc_input("cin")) carry_end (.combout(COx[Y_WIDTH]), .dataa(1'b1), .datab(1'b1), .datac(1'b1), .datad(1'b1), .cin(C[Y_WIDTH])); + assign CO = COx[Y_WIDTH]; + end + else + fiftyfivenm_lcell_comb #(.lut_mask(16'b1001_0110_1110_1000), .sum_lutc_input("cin")) arith_cell (.combout(Y[i]), .cout(COx[i+1]), .dataa(AA[i]), .datab(BB[i]), .datac(1'b1), .datad(1'b1), .cin(C[i+1])); + end: slice + endgenerate + /* End implementation */ + assign X = AA ^ BB; + +endmodule diff --git a/techlibs/intel/cyclonev/cells_map.v b/techlibs/intel/cyclonev/cells_map.v new file mode 100755 index 000000000..b3927ea4a --- /dev/null +++ b/techlibs/intel/cyclonev/cells_map.v @@ -0,0 +1,151 @@ +/* + * 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. + * + */ +// Normal mode DFF negedge clk, negedge reset +module \$_DFF_N_ (input D, C, output Q); + parameter WYSIWYG="TRUE"; + dffeas #(.is_wysiwyg(WYSIWYG)) _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"; + dffeas #(.is_wysiwyg(WYSIWYG)) _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"; + dffeas #(.is_wysiwyg(WYSIWYG)) _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"; + wire R_i = ~ R; + dffeas #(.is_wysiwyg(WYSIWYG)) _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"; + wire E_i = ~ E; + dffeas #(.is_wysiwyg(WYSIWYG)) _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; + 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(1'b1), + .datad(1'b1), + .datae(1'b1), + .dataf(1'b1), + .datag(1'b1)); + 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(1'b1), + .datae(1'b1), + .dataf(1'b1), + .datag(1'b1)); + 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(1'b1), + .dataf(1'b1), + .datag(1'b1)); + 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(1'b1), + .datag(1'b1)); + 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(1'b1)); + end + else + if(WIDTH == 7) 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(A[6])); + end + else + wire _TECHMAP_FAIL_ = 1; + endgenerate +endmodule // lut + + diff --git a/techlibs/intel/cyclonev/cells_sim.v b/techlibs/intel/cyclonev/cells_sim.v new file mode 100755 index 000000000..363310e54 --- /dev/null +++ b/techlibs/intel/cyclonev/cells_sim.v @@ -0,0 +1,144 @@ +/* + * 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. + * + */ +module VCC (output V); + assign V = 1'b1; +endmodule // VCC + +module GND (output G); + assign G = 1'b0; +endmodule // GND + +/* Altera Cyclone V devices Input Buffer Primitive */ +module cyclonev_io_ibuf + (output o, input i, input ibar); + assign ibar = ibar; + assign o = i; +endmodule // cyclonev_io_ibuf + +/* Altera Cyclone V devices Output Buffer Primitive */ +module cyclonev_io_obuf + (output o, input i, input oe); + assign o = i; + assign oe = oe; +endmodule // cyclonev_io_obuf + +/* Altera Cyclone V LUT Primitive */ +module cyclonev_lcell_comb + (output combout, cout, sumout, shareout, + input dataa, datab, datac, datad, + input datae, dataf, datag, cin, + input sharein); + + parameter lut_mask = 64'hFFFFFFFFFFFFFFFF; + parameter dont_touch = "off"; + parameter lpm_type = "cyclonev_lcell_comb"; + parameter shared_arith = "off"; + parameter extended_lut = "off"; + + // Internal variables + // Sub mask for fragmented LUTs + wire [15:0] mask_a, mask_b, mask_c, mask_d; + // Independant output for fragmented LUTs + wire output_0, output_1, output_2, output_3; + // Extended mode uses mux to define the output + wire mux_0, mux_1; + // Input for hold the shared LUT mode value + wire shared_lut_alm; + + // Simulation model of 4-input LUT + function lut4; + input [15:0] mask; + input dataa, datab, datac, datad; + reg [7:0] s3; + reg [3:0] s2; + reg [1:0] s1; + begin + s3 = datad ? mask[15:8] : mask[7:0]; + s2 = datac ? s3[7:4] : s3[3:0]; + s1 = datab ? s2[3:2] : s2[1:0]; + lut4 = dataa ? s1[1] : s1[0]; + end + endfunction // lut4 + + // Simulation model of 5-input LUT + function lut5; + input [31:0] mask; // wp-01003.pdf, page 3: "a 5-LUT can be built with two 4-LUTs and a multiplexer. + input dataa, datab, datac, datad, datae; + reg upper_lut_value; + reg lower_lut_value; + begin + upper_lut_value = lut4(mask[31:16], dataa, datab, datac, datad); + lower_lut_value = lut4(mask[15:0], dataa, datab, datac, datad); + lut5 = (datae) ? upper_mask_value : lower_mask_value; + end + endfunction // lut5 + + // Simulation model of 6-input LUT + function lut6; + input [63:0] mask; + input dataa, datab, datac, datad, datae, dataf; + reg upper_lut_value; + reg lower_lut_value; + begin + upper_lut_value = lut5(mask[63:32], dataa, datab, datac, datad, datae); + lower_lut_value = lut5(mask[31:0], dataa, datab, datac, datad, datae); + lut6 = (dataf) ? upper_mask_value : lower_mask_value; + end + endfunction // lut6 + + assign {mask_a, mask_b, mask_c, mask_d} = {lut_mask[15:0], lut_mask[31:16], lut_mask[47:32], lut_mask[63:48]}; + + always @(*) begin + if(extended_lut == "on") + shared_lut_alm = datag; + else + shared_lut_alm = datac; + // Build the ALM behaviour + out_0 = lut4(mask_a, dataa, datab, datac, datad); + out_1 = lut4(mask_b, dataa, datab, shared_lut_alm, datad); + out_2 = lut4(mask_c, dataa, datab, datac, datad); + out_3 = lut4(mask_d, dataa, datab, shared_lut_alm, datad); + end +endmodule // cyclonev_lcell_comb + + +/* Altera D Flip-Flop Primitive */ +module dffeas + (output q, + input d, clk, clrn, prn, ena, + input asdata, aload, sclr, sload); + + // Timing simulation is not covered + parameter power_up="dontcare"; + parameter is_wysiwyg="false"; + + reg q_tmp; + wire reset; + reg [7:0] debug_net; + + assign reset = (prn && sclr && ~clrn && ena); + assign q = q_tmp & 1'b1; + + always @(posedge clk, posedge aload) begin + if(reset) q_tmp <= 0; + else q_tmp <= d; + end + assign q = q_tmp; + +endmodule // dffeas |