diff options
Diffstat (limited to 'rtl/modexpng_microcode.vh')
| -rw-r--r-- | rtl/modexpng_microcode.vh | 70 |
1 files changed, 38 insertions, 32 deletions
diff --git a/rtl/modexpng_microcode.vh b/rtl/modexpng_microcode.vh index 6296e9b..9d7099e 100644 --- a/rtl/modexpng_microcode.vh +++ b/rtl/modexpng_microcode.vh @@ -5,64 +5,61 @@ localparam UOP_AUX_W = 1; localparam UOP_LADDER_W = 2; localparam UOP_SEL_W = 4 * BANK_ADDR_W; -localparam UOP_ADDR_W = 6; // 64 instructions - -localparam [UOP_ADDR_W -1:0] UOP_ADDR_OFFSET_USING_CRT = 6'd0; -localparam [UOP_ADDR_W -1:0] UOP_ADDR_OFFSET_WITHOUT_CRT = 6'd31; +localparam UOP_ADDR_W = 7; // 128 instructions +localparam [UOP_ADDR_W -1:0] UOP_ADDR_OFFSET_USING_CRT = 7'd0; +localparam [UOP_ADDR_W -1:0] UOP_ADDR_OFFSET_WITHOUT_CRT = 7'd64; // 5 1 1 1 2 4*3=12 localparam UOP_W = UOP_OPCODE_W + UOP_CRT_W + UOP_NPQ_W + UOP_AUX_W + UOP_LADDER_W + UOP_SEL_W; // [21:17] [16] [15] [14] [13:12] [11:9][8:6][5:3][2:0] +// // OPCODE -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_STOP = 5'd0; +// +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_STOP = 5'd00; /* all fields are don't care */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_WIDE = 5'd1; -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_NARROW = 5'd2; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_WIDE = 5'd01; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_NARROW = 5'd02; /* CRT tells into which of the dual MMM to write * NPQ specifies the width of the operand * AUX specifies from which INPUT to read - * LADDER is don't care - * source WIDE is always don't care - * destination NARROW is don't care for _WIDE opcode and vice versa - * -*/ + * LADDER is don't care + */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_OUTPUT_FROM_NARROW = 5'd3; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_OUTPUT_FROM_NARROW = 5'd03; /* CRT tells from which of the dual MMM to read * NPQ specifies the width of the operand * AUX is don't care * LADDER is don't care - * source and destination WIDE are don't care */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_COPY_CRT_Y2X = 5'd4; -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_COPY_LADDERS_X2Y = 5'd5; -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_CROSS_LADDERS_X2Y = 5'd7; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_COPY_CRT_Y2X = 5'd04; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_COPY_LADDERS_X2Y = 5'd05; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_CROSS_LADDERS_X2Y = 5'd06; /* CRT is don't care * NPQ specifies the width of the operand * AUX is don't care * LADDER is don't care */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_MULTIPLY = 5'd8; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_MULTIPLY = 5'd07; /* CRT is don't care * NPQ specifies the width of the operand * AUX = AUX_2 forces B input to 1 (AUX_1 reads from source NARROW as usual) * LADDER specifies Montgomery ladder mode */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_SUBTRACT = 5'd9; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_SUBTRACT = 5'd08; /* CRT is don't care * NPQ specifies the width of the operand * AUX is don't care * LADDER is don't care */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_REDUCE_INIT = 5'd10; -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_REDUCE_PROC = 5'd11; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_REDUCE_INIT = 5'd09; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_REDUCE_PROC = 5'd10; /* CRT * NPQ * AUX @@ -70,7 +67,7 @@ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_REDUCE_PROC = 5'd11; */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_PROPAGATE_CARRIES = 5'd12; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_PROPAGATE_CARRIES = 5'd11; /* CRT is don't care * NPQ specifies the width of the operand * AUX is don't care @@ -78,43 +75,52 @@ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_PROPAGATE_CARRIES = 5'd12; * source and destination WIDE are don't care */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MERGE_LH = 5'd13; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MERGE_LH = 5'd12; +/* + */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_REGULAR_MULTIPLY = 5'd14; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_REGULAR_MULTIPLY = 5'd13; +/* + */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_REGULAR_ADD_UNEVEN = 5'd15; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_REGULAR_ADD_UNEVEN = 5'd14; +/* + */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_LADDER_INIT = 5'd16; -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_LADDER_STEP = 5'd17; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_LADDER_INIT = 5'd15; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_LADDER_STEP = 5'd16; /* CRT is don't care * NPQ is don't care * AUX is don't care * LADDER is don't care - * WIDE and NARROW are don't care */ +// // CRT +// localparam [UOP_CRT_W -1:0] UOP_CRT_X = 1'b0; localparam [UOP_CRT_W -1:0] UOP_CRT_Y = 1'b1; localparam [UOP_CRT_W -1:0] UOP_CRT_DNC = 1'bX; +// // NPQ +// localparam [UOP_NPQ_W -1:0] UOP_NPQ_N = 1'b0; localparam [UOP_NPQ_W -1:0] UOP_NPQ_PQ = 1'b1; localparam [UOP_NPQ_W -1:0] UOP_NPQ_DNC = 1'bX; +// // AUX +// localparam [UOP_AUX_W -1:0] UOP_AUX_1 = 1'b0; localparam [UOP_AUX_W -1:0] UOP_AUX_2 = 1'b1; localparam [UOP_AUX_W -1:0] UOP_AUX_DNC = 1'bX; +// // LADDER +// localparam [UOP_LADDER_W -1:0] UOP_LADDER_00 = 2'b00; localparam [UOP_LADDER_W -1:0] UOP_LADDER_11 = 2'b11; localparam [UOP_LADDER_W -1:0] UOP_LADDER_D = 2'b01; localparam [UOP_LADDER_W -1:0] UOP_LADDER_PQ = 2'b10; localparam [UOP_LADDER_W -1:0] UOP_LADDER_DNC = 2'bXX; - - -// SEL -localparam [UOP_SEL_W -1:0] UOP_SEL_DNC_ALL = {4{BANK_DNC}}; |