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//======================================================================
//
// Copyright (c) 2018, NORDUnet A/S All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// - Neither the name of the NORDUnet nor the names of its contributors may
// be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//======================================================================`timescale 1ns 1ps
module ed25519_microcode
(
input wire clk,
input wire [UOP_ADDR_WIDTH-1:0] addr,
output reg [UOP_DATA_WIDTH-1:0] data
);
`include "ed25519_uop.v"
always @(posedge clk)
//
case (addr)
// Initialization
6'd00: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_ZERO, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R0_X};
6'd01: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_ONE, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R0_Y};
6'd02: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_ONE, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R0_Z};
6'd03: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_ZERO, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R0_T};
6'd04: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_G_X, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R1_X};
6'd05: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_G_Y, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R1_Y};
6'd06: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_ONE, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R1_Z};
6'd07: data <= {UOP_OPCODE_COPY, UOP_BANKS_HI2LO, UOP_OPERAND_CONST_G_T, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_R1_T};
6'd08: data <= {UOP_OPCODE_STOP, UOP_BANKS_DUMMY, UOP_OPERAND_DONTCARE, UOP_OPERAND_DONTCARE, UOP_OPERAND_DONTCARE};
// Before Round when k = 1
6'd09: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_X, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_X};
6'd10: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_Y, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_Y};
6'd11: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_Z, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_Z};
6'd12: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_T, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_T};
6'd13: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_X, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_X};
6'd14: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_Y, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_Y};
6'd15: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_Z, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_Z};
6'd16: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_T, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_T};
6'd17: data <= {UOP_OPCODE_STOP, UOP_BANKS_DUMMY, UOP_OPERAND_DONTCARE, UOP_OPERAND_DONTCARE, UOP_OPERAND_DONTCARE};
// Before Round when k = 0
6'd18: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_X, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_X};
6'd19: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_Y, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_Y};
6'd20: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_Z, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_Z};
6'd21: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R0_T, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_V_T};
6'd22: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_X, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_X};
6'd23: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_Y, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_Y};
6'd24: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_Z, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_Z};
6'd25: data <= {UOP_OPCODE_COPY, UOP_BANKS_LO2HI, UOP_OPERAND_CYCLE_R1_T, UOP_OPERAND_DONTCARE, UOP_OPERAND_CYCLE_U_T};
6'd26: data <= {UOP_OPCODE_STOP, UOP_BANKS_DUMMY, UOP_OPERAND_DONTCARE, UOP_OPERAND_DONTCARE, UOP_OPERAND_DONTCARE};
endcase
endmodule
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