diff options
Diffstat (limited to 'rtl/modexpng_parameters.vh')
| -rw-r--r-- | rtl/modexpng_parameters.vh | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/rtl/modexpng_parameters.vh b/rtl/modexpng_parameters.vh new file mode 100644 index 0000000..514fc21 --- /dev/null +++ b/rtl/modexpng_parameters.vh @@ -0,0 +1,71 @@ +`include "modexpng_parameters_x8.vh" + +function integer cryptech_clog2; + input integer value; + integer temp_value; + integer result; + // + begin + temp_value = value - 1; + for (result = 0; temp_value > 0; result = result + 1) + temp_value = temp_value >> 1; + cryptech_clog2 = result; + end + // +endfunction + +localparam WORD_W = 16; +localparam WORD_EXT_W = 18; +localparam MAC_W = 47; + +localparam MAX_OP_W = 4096; + +localparam BANK_ADDR_W = 3; +localparam OP_ADDR_W = cryptech_clog2(MAX_OP_W / WORD_W); +localparam COL_INDEX_W = OP_ADDR_W - cryptech_clog2(NUM_MULTS); + +localparam MAC_INDEX_W = cryptech_clog2(NUM_MULTS); + +localparam RDCT_CARRY_W = WORD_EXT_W - WORD_W; + +localparam [RDCT_CARRY_W-1:0] RDCT_CARRY_ZEROES = {RDCT_CARRY_W{1'b0}}; + +localparam [BANK_ADDR_W-1:0] BANK_WIDE_A = 3'd0; +localparam [BANK_ADDR_W-1:0] BANK_WIDE_B = 3'd1; +localparam [BANK_ADDR_W-1:0] BANK_WIDE_C = 3'd2; +localparam [BANK_ADDR_W-1:0] BANK_WIDE_D = 3'd3; +localparam [BANK_ADDR_W-1:0] BANK_WIDE_E = 3'd4; +localparam [BANK_ADDR_W-1:0] BANK_WIDE_N = 3'd5; +localparam [BANK_ADDR_W-1:0] BANK_WIDE_L = 3'd6; +localparam [BANK_ADDR_W-1:0] BANK_WIDE_H = 3'd7; + +localparam [BANK_ADDR_W-1:0] BANK_NARROW_A = 3'd0; +localparam [BANK_ADDR_W-1:0] BANK_NARROW_B = 3'd1; +localparam [BANK_ADDR_W-1:0] BANK_NARROW_C = 3'd2; +localparam [BANK_ADDR_W-1:0] BANK_NARROW_D = 3'd3; +localparam [BANK_ADDR_W-1:0] BANK_NARROW_E = 3'd4; +localparam [BANK_ADDR_W-1:0] BANK_NARROW_COEFF = 3'd5; +localparam [BANK_ADDR_W-1:0] BANK_NARROW_Q = 3'd6; +localparam [BANK_ADDR_W-1:0] BANK_NARROW_EXT = 3'd7; // [0] -> COEFF', [1] -> Q' + +localparam [BANK_ADDR_W-1:0] BANK_RCMB_ML = 3'd0; +localparam [BANK_ADDR_W-1:0] BANK_RCMB_MH = 3'd1; +localparam [BANK_ADDR_W-1:0] BANK_RCMB_EXT = 3'd2; // [0] -> MH' + +localparam [BANK_ADDR_W-1:0] BANK_DONT_CARE = {BANK_ADDR_W{1'bX}}; + +localparam [OP_ADDR_W-1:0] OP_ADDR_EXT_COEFF = 0; +localparam [OP_ADDR_W-1:0] OP_ADDR_EXT_Q = 1; + +localparam [OP_ADDR_W-1:0] OP_ADDR_ZERO = {OP_ADDR_W{1'b0}}; +localparam [OP_ADDR_W-1:0] OP_ADDR_ONE = {{(OP_ADDR_W-1){1'b0}}, 1'b1}; +localparam [OP_ADDR_W-1:0] OP_ADDR_DONT_CARE = {OP_ADDR_W{1'bX}}; + +localparam [WORD_W-1:0] WORD_NULL = {WORD_W{1'b0}}; +localparam [WORD_EXT_W-1:0] WORD_EXT_NULL = {WORD_EXT_W{1'b0}}; + +localparam [WORD_EXT_W-1:0] WORD_EXT_DONT_CARE = {WORD_EXT_W{1'bX}}; + +localparam [MAC_INDEX_W-1:0] MAC_INDEX_DONT_CARE = {MAC_INDEX_W{1'bX}}; + +localparam [NUM_MULTS-1:0] MULT_BITMAP_ZEROES = {NUM_MULTS{1'b0}};
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