diff options
Diffstat (limited to 'src/rtl/modexp_core.v')
| -rw-r--r-- | src/rtl/modexp_core.v | 256 |
1 files changed, 134 insertions, 122 deletions
diff --git a/src/rtl/modexp_core.v b/src/rtl/modexp_core.v index b8c4403..c1a88d1 100644 --- a/src/rtl/modexp_core.v +++ b/src/rtl/modexp_core.v @@ -54,7 +54,8 @@ // //====================================================================== -module modexp_core( +module modexp_core #(parameter OPW = 32, parameter ADW = 8) + ( input wire clk, input wire reset_n, @@ -235,7 +236,8 @@ module modexp_core( reg residue_valid_new; reg residue_valid_int_validated; - wire [7 : 0] length_m1; + wire [7 : 0] modulus_length_m1; + wire [7 : 0] exponent_length_m1; //---------------------------------------------------------------- @@ -244,127 +246,137 @@ module modexp_core( assign ready = ready_reg; assign cycles = {cycle_ctr_high_reg, cycle_ctr_low_reg}; - assign length_m1 = modulus_length - 8'h1; + assign modulus_length_m1 = modulus_length - 8'h1; + assign exponent_length_m1 = exponent_length - 8'h1; //---------------------------------------------------------------- // core instantiations. //---------------------------------------------------------------- - montprod montprod_inst( - .clk(clk), - .reset_n(reset_n), - - .calculate(montprod_calc), - .ready(montprod_ready), - - .length(montprod_length), - - .opa_addr(montprod_opa_addr), - .opa_data(montprod_opa_data), - - .opb_addr(montprod_opb_addr), - .opb_data(montprod_opb_data), - - .opm_addr(montprod_opm_addr), - .opm_data(montprod_opm_data), - - .result_addr(montprod_result_addr), - .result_data(montprod_result_data), - .result_we(montprod_result_we) - ); - - - residue residue_inst( - .clk(clk), - .reset_n(reset_n), - .calculate(residue_calculate), - .ready(residue_ready), - .nn(residue_nn), - .length(residue_length), - .opa_rd_addr(residue_opa_rd_addr), - .opa_rd_data(residue_opa_rd_data), - .opa_wr_addr(residue_opa_wr_addr), - .opa_wr_data(residue_opa_wr_data), - .opa_wr_we(residue_opa_wr_we), - .opm_addr(residue_opm_addr), - .opm_data(residue_opm_data) - ); - - blockmem2r1w residue_mem( - .clk(clk), - .read_addr0(residue_opa_rd_addr), - .read_data0(residue_opa_rd_data), - .read_addr1(residue_mem_montprod_read_addr), - .read_data1(residue_mem_montprod_read_data), - .wr(residue_opa_wr_we), - .write_addr(residue_opa_wr_addr), - .write_data(residue_opa_wr_data) - ); - - - blockmem2r1w p_mem( - .clk(clk), - .read_addr0(p_mem_rd0_addr), - .read_data0(p_mem_rd0_data), - .read_addr1(p_mem_rd1_addr), - .read_data1(p_mem_rd1_data), - .wr(p_mem_we), - .write_addr(p_mem_wr_addr), - .write_data(p_mem_wr_data) - ); - - - blockmem2r1wptr exponent_mem( - .clk(clk), - .reset_n(reset_n), - .read_addr0(exponent_mem_int_rd_addr), - .read_data0(exponent_mem_int_rd_data), - .read_data1(exponent_mem_api_read_data), - .rst(exponent_mem_api_rst), - .cs(exponent_mem_api_cs), - .wr(exponent_mem_api_wr), - .write_data(exponent_mem_api_write_data) - ); - - - blockmem2r1wptr modulus_mem( - .clk(clk), - .reset_n(reset_n), - .read_addr0(modulus_mem_int_rd_addr), - .read_data0(modulus_mem_int_rd_data), - .read_data1(modulus_mem_api_read_data), - .rst(modulus_mem_api_rst), - .cs(modulus_mem_api_cs), - .wr(modulus_mem_api_wr), - .write_data(modulus_mem_api_write_data) - ); - - - blockmem2r1wptr message_mem( - .clk(clk), - .reset_n(reset_n), - .read_addr0(message_mem_int_rd_addr), - .read_data0(message_mem_int_rd_data), - .read_data1(message_mem_api_read_data), - .rst(message_mem_api_rst), - .cs(message_mem_api_cs), - .wr(message_mem_api_wr), - .write_data(message_mem_api_write_data) - ); - - - blockmem2rptr1w result_mem( - .clk(clk), - .reset_n(reset_n), - .read_addr0(result_mem_int_rd_addr[7 : 0]), - .read_data0(result_mem_int_rd_data), - .read_data1(result_mem_api_read_data), - .rst(result_mem_api_rst), - .cs(result_mem_api_cs), - .wr(result_mem_int_we), - .write_addr(result_mem_int_wr_addr), - .write_data(result_mem_int_wr_data) - ); + montprod #(.OPW(OPW), .ADW(ADW)) + montprod_inst( + .clk(clk), + .reset_n(reset_n), + + .calculate(montprod_calc), + .ready(montprod_ready), + + .length(montprod_length), + + .opa_addr(montprod_opa_addr), + .opa_data(montprod_opa_data), + + .opb_addr(montprod_opb_addr), + .opb_data(montprod_opb_data), + + .opm_addr(montprod_opm_addr), + .opm_data(montprod_opm_data), + + .result_addr(montprod_result_addr), + .result_data(montprod_result_data), + .result_we(montprod_result_we) + ); + + + residue #(.OPW(OPW), .ADW(ADW)) + residue_inst( + .clk(clk), + .reset_n(reset_n), + .calculate(residue_calculate), + .ready(residue_ready), + .nn(residue_nn), + .length(residue_length), + .opa_rd_addr(residue_opa_rd_addr), + .opa_rd_data(residue_opa_rd_data), + .opa_wr_addr(residue_opa_wr_addr), + .opa_wr_data(residue_opa_wr_data), + .opa_wr_we(residue_opa_wr_we), + .opm_addr(residue_opm_addr), + .opm_data(residue_opm_data) + ); + + + blockmem2r1w #(.OPW(OPW), .ADW(ADW)) + residue_mem( + .clk(clk), + .read_addr0(residue_opa_rd_addr), + .read_data0(residue_opa_rd_data), + .read_addr1(residue_mem_montprod_read_addr), + .read_data1(residue_mem_montprod_read_data), + .wr(residue_opa_wr_we), + .write_addr(residue_opa_wr_addr), + .write_data(residue_opa_wr_data) + ); + + + blockmem2r1w #(.OPW(OPW), .ADW(ADW)) + p_mem( + .clk(clk), + .read_addr0(p_mem_rd0_addr), + .read_data0(p_mem_rd0_data), + .read_addr1(p_mem_rd1_addr), + .read_data1(p_mem_rd1_data), + .wr(p_mem_we), + .write_addr(p_mem_wr_addr), + .write_data(p_mem_wr_data) + ); + + + blockmem2r1wptr #(.OPW(OPW), .ADW(ADW)) + exponent_mem( + .clk(clk), + .reset_n(reset_n), + .read_addr0(exponent_mem_int_rd_addr), + .read_data0(exponent_mem_int_rd_data), + .read_data1(exponent_mem_api_read_data), + .rst(exponent_mem_api_rst), + .cs(exponent_mem_api_cs), + .wr(exponent_mem_api_wr), + .write_data(exponent_mem_api_write_data) + ); + + + blockmem2r1wptr #(.OPW(OPW), .ADW(ADW)) + modulus_mem( + .clk(clk), + .reset_n(reset_n), + .read_addr0(modulus_mem_int_rd_addr), + .read_data0(modulus_mem_int_rd_data), + .read_data1(modulus_mem_api_read_data), + .rst(modulus_mem_api_rst), + .cs(modulus_mem_api_cs), + .wr(modulus_mem_api_wr), + .write_data(modulus_mem_api_write_data) + ); + + + blockmem2r1wptr #(.OPW(OPW), .ADW(ADW)) + message_mem( + .clk(clk), + .reset_n(reset_n), + .read_addr0(message_mem_int_rd_addr), + .read_data0(message_mem_int_rd_data), + .read_data1(message_mem_api_read_data), + .rst(message_mem_api_rst), + .cs(message_mem_api_cs), + .wr(message_mem_api_wr), + .write_data(message_mem_api_write_data) + ); + + + blockmem2rptr1w #(.OPW(OPW), .ADW(ADW)) + result_mem( + .clk(clk), + .reset_n(reset_n), + .read_addr0(result_mem_int_rd_addr[7 : 0]), + .read_data0(result_mem_int_rd_data), + .read_data1(result_mem_api_read_data), + .rst(result_mem_api_rst), + .cs(result_mem_api_cs), + .wr(result_mem_int_we), + .write_addr(result_mem_int_wr_addr), + .write_data(result_mem_int_wr_data) + ); //---------------------------------------------------------------- @@ -485,10 +497,10 @@ module modexp_core( one_new = 32'h00000000; b_one_new = 32'h00000000; - if (montprod_opa_addr == length_m1) + if (montprod_opa_addr == modulus_length_m1) one_new = 32'h00000001; - if (montprod_opb_addr == length_m1) + if (montprod_opb_addr == modulus_length_m1) b_one_new = 32'h00000001; end @@ -634,7 +646,7 @@ module modexp_core( loop_counter_new = 13'b0; loop_counter_we = 1'b0; - if (loop_counter_reg == {length_m1, 5'b11111}) + if (loop_counter_reg == {exponent_length_m1, 5'b11111}) last_iteration = 1'b1; else last_iteration = 1'b0; @@ -668,7 +680,7 @@ module modexp_core( begin : exponent_process // Accessing new instead of reg - pick up update at // CTRL_ITERATE_NEW to remove a pipeline stall. - E_word_index = length_m1 - loop_counter_new[ 12 : 5 ]; + E_word_index = exponent_length_m1 - loop_counter_new[ 12 : 5 ]; E_bit_index = loop_counter_reg[ 04 : 0 ]; |