diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/rtl/modexp.v | 77 | ||||
| -rw-r--r-- | src/rtl/modexp_core.v | 3 |
2 files changed, 45 insertions, 35 deletions
diff --git a/src/rtl/modexp.v b/src/rtl/modexp.v index 4e9fc51..65f4058 100644 --- a/src/rtl/modexp.v +++ b/src/rtl/modexp.v @@ -72,6 +72,14 @@ module modexp( //---------------------------------------------------------------- // Internal constant and parameter definitions. //---------------------------------------------------------------- + // The operand width is the internal operand width in bits. + // The address width is the size of the address space used. This + // value must be balances with OPERAND_WIDTH to allow a total + // of 8192 bits of data. OPERAND_WIDTH * (ADDRESS_WIDTH ** 2) + // is the formula. Note that the API data with is always 32 bits. + localparam OPERAND_WIDTH = 32; + localparam ADDRESS_WIDTH = 8; + localparam GENERAL_PREFIX = 4'h0; localparam ADDR_NAME0 = 8'h00; localparam ADDR_NAME1 = 8'h01; @@ -162,40 +170,41 @@ module modexp( //---------------------------------------------------------------- // core instantiations. //---------------------------------------------------------------- - modexp_core core_inst( - .clk(clk), - .reset_n(reset_n), - - .start(start_reg), - .ready(ready), - - .exponent_length(exponent_length_reg), - .modulus_length(modulus_length_reg), - - .cycles(cycles), - - .exponent_mem_api_cs(exponent_mem_api_cs), - .exponent_mem_api_wr(exponent_mem_api_wr), - .exponent_mem_api_rst(exponent_mem_api_rst), - .exponent_mem_api_write_data(write_data), - .exponent_mem_api_read_data(exponent_mem_api_read_data), - - .modulus_mem_api_cs(modulus_mem_api_cs), - .modulus_mem_api_wr(modulus_mem_api_wr), - .modulus_mem_api_rst(modulus_mem_api_rst), - .modulus_mem_api_write_data(write_data), - .modulus_mem_api_read_data(modulus_mem_api_read_data), - - .message_mem_api_cs(message_mem_api_cs), - .message_mem_api_wr(message_mem_api_wr), - .message_mem_api_rst(message_mem_api_rst), - .message_mem_api_write_data(write_data), - .message_mem_api_read_data(message_mem_api_read_data), - - .result_mem_api_cs(result_mem_api_cs), - .result_mem_api_rst(result_mem_api_rst), - .result_mem_api_read_data(result_mem_api_read_data) - ); + modexp_core #(.OPW(OPERAND_WIDTH), .ADW(ADDRESS_WIDTH)) + core_inst( + .clk(clk), + .reset_n(reset_n), + + .start(start_reg), + .ready(ready), + + .exponent_length(exponent_length_reg), + .modulus_length(modulus_length_reg), + + .cycles(cycles), + + .exponent_mem_api_cs(exponent_mem_api_cs), + .exponent_mem_api_wr(exponent_mem_api_wr), + .exponent_mem_api_rst(exponent_mem_api_rst), + .exponent_mem_api_write_data(write_data), + .exponent_mem_api_read_data(exponent_mem_api_read_data), + + .modulus_mem_api_cs(modulus_mem_api_cs), + .modulus_mem_api_wr(modulus_mem_api_wr), + .modulus_mem_api_rst(modulus_mem_api_rst), + .modulus_mem_api_write_data(write_data), + .modulus_mem_api_read_data(modulus_mem_api_read_data), + + .message_mem_api_cs(message_mem_api_cs), + .message_mem_api_wr(message_mem_api_wr), + .message_mem_api_rst(message_mem_api_rst), + .message_mem_api_write_data(write_data), + .message_mem_api_read_data(message_mem_api_read_data), + + .result_mem_api_cs(result_mem_api_cs), + .result_mem_api_rst(result_mem_api_rst), + .result_mem_api_read_data(result_mem_api_read_data) + ); //---------------------------------------------------------------- diff --git a/src/rtl/modexp_core.v b/src/rtl/modexp_core.v index b8c4403..aa8a758 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, |