diff options
Diffstat (limited to 'rtl/modexpng_microcode.vh')
| -rw-r--r-- | rtl/modexpng_microcode.vh | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/rtl/modexpng_microcode.vh b/rtl/modexpng_microcode.vh index 2e591e7..f68c559 100644 --- a/rtl/modexpng_microcode.vh +++ b/rtl/modexpng_microcode.vh @@ -1,8 +1,8 @@ -localparam UOP_OPCODE_W = 4; +localparam UOP_OPCODE_W = 5; localparam UOP_CRT_W = 1; localparam UOP_NPQ_W = 1; localparam UOP_AUX_W = 1; -localparam UOP_LADDER_W = 1; +localparam UOP_LADDER_W = 2; localparam UOP_SEL_W = 4 * BANK_ADDR_W; localparam UOP_ADDR_W = 6; // 64 instructions @@ -11,17 +11,17 @@ 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; -// 4 1 1 1 2 4*3=12 +// 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; -// [20:17] [16] [15] [14] [13:12] [11:9][8:6][5:3][2:0] +// [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 = 4'd0; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_STOP = 5'd0; /* all fields are don't care */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_WIDE = 4'd1; -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_NARROW = 4'd2; +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; /* CRT tells into which of the dual MMM to write * NPQ specifies the width of the operand * AUX specifies from which INPUT to read @@ -31,7 +31,7 @@ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_NARROW = 4'd2; * */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_OUTPUT_FROM_NARROW = 4'd3; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_OUTPUT_FROM_NARROW = 5'd3; /* CRT tells from which of the dual MMM to read * NPQ specifies the width of the operand * AUX is don't care @@ -39,27 +39,45 @@ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_OUTPUT_FROM_NARROW = 4'd3; * source and destination WIDE are don't care */ -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_COPY_CRT_Y2X = 4'd4; +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; /* 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 = 4'd8; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_MULTIPLY = 5'd8; /* 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_REDUCE_INIT = 5'd10; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_REDUCE_PROC = 5'd11; +/* CRT + * NPQ + * AUX + * LADDER is don't care + */ + -localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_PROPAGATE_CARRIES = 4'd11; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_PROPAGATE_CARRIES = 5'd12; /* CRT is don't care * 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_LADDER_INIT = 5'd16; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_LADDER_STEP = 5'd17; +/* 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; |