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redbear |
//////////////////////////////////////////////////////////////////
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////
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////
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//// CRCAHB CORE BLOCK
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////
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////
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////
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//// This file is part of the APB to I2C project
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////
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//// http://www.opencores.org/cores/apbi2c/
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////
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////
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////
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//// Description
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////
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//// Implementation of APB IP core according to
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////
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//// crcahb IP core specification document.
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////
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////
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////
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//// To Do: Things are right here but always all block can suffer changes
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////
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////
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////
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////
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////
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//// Author(s): - Julio Cesar
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////
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/////////////////////////////////////////////////////////////////
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////
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////
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//// Copyright (C) 2009 Authors and OPENCORES.ORG
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////
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////
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////
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//// This source file may be used and distributed without
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////
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//// restriction provided that this copyright statement is not
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////
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//// removed from the file and that any derivative work contains
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//// the original copyright notice and the associated disclaimer.
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////
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////
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//// This source file is free software; you can redistribute it
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////
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//// and/or modify it under the terms of the GNU Lesser General
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////
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//// Public License as published by the Free Software Foundation;
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//// either version 2.1 of the License, or (at your option) any
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////
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//// later version.
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////
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////
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////
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//// This source is distributed in the hope that it will be
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////
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//// useful, but WITHOUT ANY WARRANTY; without even the implied
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////
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//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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////
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//// PURPOSE. See the GNU Lesser General Public License for more
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//// details.
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////
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////
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////
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//// You should have received a copy of the GNU Lesser General
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////
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//// Public License along with this source; if not, download it
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////
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//// from http://www.opencores.org/lgpl.shtml
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////
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////
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///////////////////////////////////////////////////////////////////
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2 |
julioameri |
module tb_crc_ip();
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//Memory Map
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localparam CRC_DR = 32'h0;
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localparam CRC_IDR = 32'h4;
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localparam CRC_CR = 32'h8;
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localparam CRC_INIT = 32'h10;
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localparam CRC_POL = 32'h14;
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//HTRANS Encoding
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localparam IDLE = 2'b00;
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localparam BUSY = 2'b01;
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localparam NON_SEQ = 2'b10;
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localparam SEQ = 2'b11;
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//HSIZE Encoding
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localparam BYTE = 2'b00;
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localparam HALF_WORD = 2'b01;
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localparam WORD = 2'b10;
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//CRC_CR Encoding
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localparam RESET = 32'h00000001;
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localparam POLY_SIZE_32 = 32'h00000000;
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localparam POLY_SIZE_16 = 32'h00000001 << 3;
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localparam POLY_SIZE_8 = 32'h00000001 << 4;
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localparam POLY_SIZE_7 = 32'h00000003 << 3;
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localparam REV_IN_NORMAL = 32'h00000000;
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localparam REV_IN_BYTE = 32'h00000001 << 5;
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localparam REV_IN_HALF_WORD = 32'h00000001 << 6;
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localparam REV_IN_WORD = 32'h00000003 << 5;
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localparam REV_OUT_NORMAL = 32'h00000000;
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localparam REV_OUT_REV = 32'h00000001 << 7;
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wire [31:0] HRDATA;
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wire HREADYOUT;
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wire HRESP;
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reg [31:0] HWDATA;
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reg [31:0] HADDR;
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reg [ 2:0] HSIZE;
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reg [ 1:0] HTRANS;
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reg HWRITE;
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reg HSElx;
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reg HREADY;
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reg HRESETn;
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reg HCLK;
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reg [31:0] result, golden;
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reg [31:0] data_init, data_crc;
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reg [31:0] data_rev;
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task reset;
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begin
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HWDATA = 0;
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HADDR = 0;
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HSIZE = 0;
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HTRANS = 0;
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HWRITE = 0;
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HSElx = 0;
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HREADY = 1;
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HRESETn = 0;
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HCLK = 0;
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@(posedge HCLK);
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@(posedge HCLK);
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HRESETn = 1;
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@(posedge HCLK);
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end
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endtask
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task write_ahb;
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input [31:0] addr;
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input [31:0] data;
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input [ 1:0] size;
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begin
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HADDR <= addr;
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HSElx <= 1;
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HTRANS <= NON_SEQ;
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HSIZE <= size;
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HWRITE <= 1;
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@(negedge HCLK);
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if(HREADYOUT == 0)
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@(posedge HREADYOUT);
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@(posedge HCLK);
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HWDATA <= data;
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HSElx <= 0;
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HTRANS <= IDLE;
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end
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endtask
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task read_ahb;
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input [31:0] addr;
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output [31:0] data_rd;
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begin
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HADDR <= addr;
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HSElx <= 1;
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HTRANS <= NON_SEQ;
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HWRITE <= 0;
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@(posedge HCLK);
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@(negedge HCLK);
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if(HREADYOUT == 0)
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@(posedge HREADYOUT);
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@(negedge HCLK);
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//@(posedge HCLK);
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data_rd = HRDATA;
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HSElx = 0;
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HTRANS = IDLE;
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end
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endtask
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task compare;
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input [31:0] golden;
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input [31:0] result;
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begin
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if(golden != result)
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begin
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$display("Error Founded...Expected %x, obtained %x", golden, result);
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$stop;
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end
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end
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endtask
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crc_ip CRC_IP
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(
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.HRDATA ( HRDATA ),
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.HREADYOUT ( HREADYOUT ),
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.HRESP ( HRESP ),
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.HWDATA ( HWDATA ),
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.HADDR ( HADDR ),
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.HSIZE ( HSIZE ),
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.HTRANS ( HTRANS ),
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.HWRITE ( HWRITE ),
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.HSElx ( HSElx ),
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.HREADY ( HREADY ),
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.HRESETn ( HRESETn ),
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.HCLK ( HCLK )
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);
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initial
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begin
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reset;
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write_ahb(CRC_DR, 32'h01020304, WORD);
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write_ahb(3'h1, 32'h05060708, WORD);
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write_ahb(3'h2, 32'h090a0b0c, WORD);
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write_ahb(3'h3, 32'h0d0e0f00, WORD);
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write_ahb(3'h4, 32'h00112233, WORD);
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read_ahb(CRC_DR, result);
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write_ahb(CRC_IDR, 32'h89abcdef, WORD);
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read_ahb(CRC_IDR, result);
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//Test Case 1: Write and Read in IDR
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golden = 32'h89abcdee;
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write_ahb(CRC_IDR, golden, WORD);
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read_ahb(CRC_IDR, result);
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compare(32'hff & golden, result);
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golden = 32'hffeeddcc;
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write_ahb(CRC_IDR, golden, BYTE);
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read_ahb(CRC_IDR, result);
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compare(32'hff & golden, result);
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//Test Case 2: Write and Read in CR
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golden = 32'hffeeddcc;
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//Test Case 2: Write and Read in CR
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golden = 32'hffeeddcc;
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write_ahb(CRC_CR, golden, WORD);
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read_ahb(CRC_CR, result);
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compare(32'hf8 & golden, result);
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golden = 32'hffeeddff;
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write_ahb(CRC_CR, golden, WORD);
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read_ahb(CRC_CR, result);
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compare(32'hf8 & golden, result);
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//Test Case 3: Write and Read in INIT
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golden = 32'hffeeddcc;
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write_ahb(CRC_INIT, golden, WORD);
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read_ahb(CRC_INIT, result);
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compare(golden, result);
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golden = 32'hffeeddff;
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write_ahb(CRC_INIT, golden, WORD);
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read_ahb(CRC_INIT, result);
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compare(golden, result);
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//Test Case 4: Write and Read in POL
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golden = 32'h11235813;
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write_ahb(CRC_POL, golden, WORD);
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read_ahb(CRC_POL, result);
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compare(golden, result);
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| 270 |
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golden = 32'h24161614;
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write_ahb(CRC_POL, golden, WORD);
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read_ahb(CRC_POL, result);
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compare(golden, result);
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| 275 |
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//Test Case 5: Programmable Initial CRC Value
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| 276 |
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//POLY_SIZE_32, Data_32
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| 277 |
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data_init = 32'h14635287;
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| 278 |
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data_crc = 32'haabbccdd;
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| 279 |
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golden = //crc_32(32'hddccbbaa, data_init);
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crc_32(data_crc[31:24], crc_32(data_crc[23:16], crc_32(data_crc[15:8], crc_32(data_crc[7:0], data_init))));
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| 281 |
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write_ahb(CRC_POL, 32'h04c11db7, WORD);
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| 282 |
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write_ahb(CRC_CR, POLY_SIZE_32 | RESET, WORD);
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| 283 |
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write_ahb(CRC_INIT, data_init, WORD);
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| 284 |
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write_ahb(CRC_DR, data_crc, WORD);
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| 285 |
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read_ahb(CRC_DR, result);
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| 286 |
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compare(golden, result);
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| 287 |
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$display("%x", golden);
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| 288 |
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| 289 |
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//POLY_SIZE_32, Data_16
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| 290 |
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data_init = 32'h14635287;
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| 291 |
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data_crc = 32'h11223344;
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| 292 |
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golden = crc_32(data_crc[15:8], crc_32(data_crc[7:0], data_init));
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| 293 |
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write_ahb(CRC_POL, 32'h04c11db7, WORD);
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| 294 |
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write_ahb(CRC_CR, POLY_SIZE_32 | RESET, WORD);
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| 295 |
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write_ahb(CRC_INIT, data_init, WORD);
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| 296 |
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write_ahb(CRC_DR, data_crc, HALF_WORD);
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| 297 |
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read_ahb(CRC_DR, result);
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| 298 |
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compare(golden, result);
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| 299 |
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$display("%x", golden);
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| 300 |
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| 301 |
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//POLY_SIZE_32, Data_8
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| 302 |
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data_init = 32'h11223344;
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| 303 |
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data_crc = 32'h01463528;
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| 304 |
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golden = crc_32(data_crc[7:0], data_init);
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| 305 |
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write_ahb(CRC_POL, 32'h04c11db7, WORD);
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| 306 |
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write_ahb(CRC_CR, POLY_SIZE_32 | RESET, WORD);
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| 307 |
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write_ahb(CRC_INIT, data_init, WORD);
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| 308 |
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write_ahb(CRC_DR, data_crc, BYTE);
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| 309 |
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read_ahb(CRC_DR, result);
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| 310 |
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compare(golden, result);
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| 311 |
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$display("%x", golden);
|
| 312 |
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| 313 |
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//POLY_SIZE_16, Data_32
|
| 314 |
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data_init = 32'hadefbc89;
|
| 315 |
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data_crc = 32'h01463528;
|
| 316 |
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golden = crc_16(data_crc[31:24], crc_16(data_crc[23:16], crc_16(data_crc[15:8], crc_16(data_crc[7:0], data_init))));
|
| 317 |
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write_ahb(CRC_POL, 32'h00018005, WORD);
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| 318 |
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write_ahb(CRC_CR, POLY_SIZE_16 | RESET, WORD);
|
| 319 |
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write_ahb(CRC_INIT, data_init, WORD);
|
| 320 |
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write_ahb(CRC_DR, data_crc, WORD);
|
| 321 |
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read_ahb(CRC_DR, result);
|
| 322 |
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compare(golden, result);
|
| 323 |
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$display("%x", golden);
|
| 324 |
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| 325 |
|
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//POLY_SIZE_16, Data_16
|
| 326 |
|
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data_init = 32'h01463528;
|
| 327 |
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data_crc = 32'hadefbc89;
|
| 328 |
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golden = crc_16(data_crc[15:8], crc_16(data_crc[7:0], data_init));
|
| 329 |
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write_ahb(CRC_POL, 32'h00018005, WORD);
|
| 330 |
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write_ahb(CRC_CR, POLY_SIZE_16 | RESET, WORD);
|
| 331 |
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write_ahb(CRC_INIT, data_init, WORD);
|
| 332 |
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write_ahb(CRC_DR, data_crc, HALF_WORD);
|
| 333 |
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read_ahb(CRC_DR, result);
|
| 334 |
|
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compare(golden, result);
|
| 335 |
|
|
$display("%x", golden);
|
| 336 |
|
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|
| 337 |
|
|
//POLY_SIZE_16, Data_8
|
| 338 |
|
|
data_init = 32'h01463d28;
|
| 339 |
|
|
data_crc = 32'haedfbc89;
|
| 340 |
|
|
golden = crc_16(data_crc[7:0], data_init);
|
| 341 |
|
|
write_ahb(CRC_POL, 32'h00018005, WORD);
|
| 342 |
|
|
write_ahb(CRC_CR, POLY_SIZE_16 | RESET, WORD);
|
| 343 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 344 |
|
|
write_ahb(CRC_DR, data_crc, BYTE);
|
| 345 |
|
|
read_ahb(CRC_DR, result);
|
| 346 |
|
|
compare(golden, result);
|
| 347 |
|
|
$display("%x", golden);
|
| 348 |
|
|
|
| 349 |
|
|
//POLY_SIZE_8, Data_32
|
| 350 |
|
|
data_init = 32'h11453028;
|
| 351 |
|
|
data_crc = 32'haed7bc39;
|
| 352 |
|
|
golden = crc_8(data_crc[31:24], crc_8(data_crc[23:16], crc_8(data_crc[15:8], crc_8(data_crc[7:0], data_init))));
|
| 353 |
|
|
write_ahb(CRC_POL, 32'h00000107, WORD);
|
| 354 |
|
|
write_ahb(CRC_CR, POLY_SIZE_8 | RESET, WORD);
|
| 355 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 356 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 357 |
|
|
read_ahb(CRC_DR, result);
|
| 358 |
|
|
compare(golden, result);
|
| 359 |
|
|
$display("%x", golden);
|
| 360 |
|
|
|
| 361 |
|
|
//POLY_SIZE_8, Data_16
|
| 362 |
|
|
data_init = 32'h11003028;
|
| 363 |
|
|
data_crc = 32'haed70039;
|
| 364 |
|
|
golden = crc_8(data_crc[15:8], crc_8(data_crc[7:0], data_init));
|
| 365 |
|
|
write_ahb(CRC_POL, 32'h00000107, WORD);
|
| 366 |
|
|
write_ahb(CRC_CR, POLY_SIZE_8 | RESET, WORD);
|
| 367 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 368 |
|
|
write_ahb(CRC_DR, data_crc, HALF_WORD);
|
| 369 |
|
|
read_ahb(CRC_DR, result);
|
| 370 |
|
|
compare(golden, result);
|
| 371 |
|
|
$display("%x", golden);
|
| 372 |
|
|
|
| 373 |
|
|
//POLY_SIZE_8, Data_8
|
| 374 |
|
|
data_init = 32'h11000028;
|
| 375 |
|
|
data_crc = 32'hafdfff39;
|
| 376 |
|
|
golden = crc_8(data_crc[7:0], data_init);
|
| 377 |
|
|
write_ahb(CRC_POL, 32'h00000107, WORD);
|
| 378 |
|
|
write_ahb(CRC_CR, POLY_SIZE_8 | RESET, WORD);
|
| 379 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 380 |
|
|
write_ahb(CRC_DR, data_crc, BYTE);
|
| 381 |
|
|
read_ahb(CRC_DR, result);
|
| 382 |
|
|
compare(golden, result);
|
| 383 |
|
|
$display("%x", golden);
|
| 384 |
|
|
|
| 385 |
|
|
//POLY_SIZE_7, Data_32
|
| 386 |
|
|
data_init = 32'h11453087;
|
| 387 |
|
|
data_crc = 32'haed7bcfd;
|
| 388 |
|
|
golden = crc_7(data_crc[31:24], crc_7(data_crc[23:16], crc_7(data_crc[15:8], crc_7(data_crc[7:0], data_init))));
|
| 389 |
|
|
write_ahb(CRC_POL, 32'h00000087, WORD);
|
| 390 |
|
|
write_ahb(CRC_CR, POLY_SIZE_7 | RESET, WORD);
|
| 391 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 392 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 393 |
|
|
read_ahb(CRC_DR, result);
|
| 394 |
|
|
compare(golden, result);
|
| 395 |
|
|
$display("%x", golden);
|
| 396 |
|
|
|
| 397 |
|
|
//POLY_SIZE_7, Data_16
|
| 398 |
|
|
data_init = 32'h00453057;
|
| 399 |
|
|
data_crc = 32'haed773fd;
|
| 400 |
|
|
golden = crc_7(data_crc[15:8], crc_7(data_crc[7:0], data_init));
|
| 401 |
|
|
write_ahb(CRC_POL, 32'h00000087, WORD);
|
| 402 |
|
|
write_ahb(CRC_CR, POLY_SIZE_7 | RESET, WORD);
|
| 403 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 404 |
|
|
write_ahb(CRC_DR, data_crc, HALF_WORD);
|
| 405 |
|
|
read_ahb(CRC_DR, result);
|
| 406 |
|
|
compare(golden, result);
|
| 407 |
|
|
$display("%x", golden);
|
| 408 |
|
|
|
| 409 |
|
|
//POLY_SIZE_7, Data_8
|
| 410 |
|
|
data_init = 32'h0045301d;
|
| 411 |
|
|
data_crc = 32'haed7732a;
|
| 412 |
|
|
golden = crc_7(data_crc[7:0], data_init);
|
| 413 |
|
|
write_ahb(CRC_POL, 32'h00000087, WORD);
|
| 414 |
|
|
write_ahb(CRC_CR, POLY_SIZE_7 | RESET, WORD);
|
| 415 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 416 |
|
|
write_ahb(CRC_DR, data_crc, BYTE);
|
| 417 |
|
|
read_ahb(CRC_DR, result);
|
| 418 |
|
|
compare(golden, result);
|
| 419 |
|
|
$display("%x", golden);
|
| 420 |
|
|
|
| 421 |
|
|
//Test Case 6: Test REV_IN configuratin
|
| 422 |
|
|
//REV_IN_BYTE
|
| 423 |
|
|
data_init = 32'h14635287;
|
| 424 |
|
|
data_crc = 32'h1a2b3c4d;
|
| 425 |
|
|
data_rev = 32'h58d43cb2;
|
| 426 |
|
|
golden = crc_32(data_rev[31:24], crc_32(data_rev[23:16], crc_32(data_rev[15:8], crc_32(data_rev[7:0], data_init))));
|
| 427 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 428 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET | REV_IN_BYTE, WORD);
|
| 429 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 430 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 431 |
|
|
read_ahb(CRC_DR, result);
|
| 432 |
|
|
compare(golden, result);
|
| 433 |
|
|
$display("%x", golden);
|
| 434 |
|
|
|
| 435 |
|
|
//REV_IN_HALF_WORD
|
| 436 |
|
|
data_init = 32'h14635287;
|
| 437 |
|
|
data_crc = 32'h1a2b3c4d;
|
| 438 |
|
|
data_rev = 32'hd458b23c;
|
| 439 |
|
|
golden = crc_32(data_rev[31:24], crc_32(data_rev[23:16], crc_32(data_rev[15:8], crc_32(data_rev[7:0], data_init))));
|
| 440 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 441 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET | REV_IN_HALF_WORD, WORD);
|
| 442 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 443 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 444 |
|
|
read_ahb(CRC_DR, result);
|
| 445 |
|
|
compare(golden, result);
|
| 446 |
|
|
$display("%x", golden);
|
| 447 |
|
|
|
| 448 |
|
|
//REV_IN_WORD
|
| 449 |
|
|
data_init = 32'h14635287;
|
| 450 |
|
|
data_crc = 32'h1a2b3c4d;
|
| 451 |
|
|
data_rev = 32'hb23cd458;
|
| 452 |
|
|
golden = crc_32(data_rev[31:24], crc_32(data_rev[23:16], crc_32(data_rev[15:8], crc_32(data_rev[7:0], data_init))));
|
| 453 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 454 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET | REV_IN_WORD, WORD);
|
| 455 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 456 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 457 |
|
|
read_ahb(CRC_DR, result);
|
| 458 |
|
|
compare(golden, result);
|
| 459 |
|
|
$display("%x", golden);
|
| 460 |
|
|
|
| 461 |
|
|
//Test Case 7: Test REV_OUT configuratin
|
| 462 |
|
|
//REV_IN_BYTE
|
| 463 |
|
|
data_init = 32'h14635287;
|
| 464 |
|
|
data_crc = 32'h1a2b3c4d;
|
| 465 |
|
|
golden = rev_out(crc_32(data_crc[31:24], crc_32(data_crc[23:16], crc_32(data_crc[15:8], crc_32(data_crc[7:0], data_init)))));
|
| 466 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 467 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET | REV_OUT_REV, WORD);
|
| 468 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 469 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 470 |
|
|
read_ahb(CRC_DR, result);
|
| 471 |
|
|
compare(golden, result);
|
| 472 |
|
|
$display("%x", golden);
|
| 473 |
|
|
|
| 474 |
|
|
//Test Case 8: Test RESET, Data 32
|
| 475 |
|
|
data_init = 32'h14635287;
|
| 476 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 477 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET, WORD);
|
| 478 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 479 |
|
|
|
| 480 |
|
|
//Data 1
|
| 481 |
|
|
data_crc = 32'h00112233;
|
| 482 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 483 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 484 |
|
|
|
| 485 |
|
|
//Data 2
|
| 486 |
|
|
data_crc = 32'h44556677;
|
| 487 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 488 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 489 |
|
|
|
| 490 |
|
|
//Data 3
|
| 491 |
|
|
data_crc = 32'h8899aabb;
|
| 492 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 493 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 494 |
|
|
|
| 495 |
|
|
//Data 4
|
| 496 |
|
|
data_crc = 32'hccddeeff;
|
| 497 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 498 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 499 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 500 |
|
|
|
| 501 |
|
|
|
| 502 |
|
|
read_ahb(CRC_DR, result);
|
| 503 |
|
|
golden = crc_32(data_crc[31:24], crc_32(data_crc[23:16], crc_32(data_crc[15:8], crc_32(data_crc[7:0], data_init))));
|
| 504 |
|
|
compare(golden, result);
|
| 505 |
|
|
$display("%x", golden);
|
| 506 |
|
|
|
| 507 |
|
|
//Test Case 9: Test RESET, Data 16
|
| 508 |
|
|
data_init = 32'h14635287;
|
| 509 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 510 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET, WORD);
|
| 511 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 512 |
|
|
|
| 513 |
|
|
//Data 1
|
| 514 |
|
|
data_crc = 32'h00112233;
|
| 515 |
|
|
write_ahb(CRC_DR, data_crc, HALF_WORD);
|
| 516 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 517 |
|
|
|
| 518 |
|
|
//Data 2
|
| 519 |
|
|
data_crc = 32'h44556677;
|
| 520 |
|
|
write_ahb(CRC_DR, data_crc, HALF_WORD);
|
| 521 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 522 |
|
|
|
| 523 |
|
|
//Data 3
|
| 524 |
|
|
data_crc = 32'h8899aabb;
|
| 525 |
|
|
write_ahb(CRC_DR, data_crc, HALF_WORD);
|
| 526 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 527 |
|
|
|
| 528 |
|
|
//Data 4
|
| 529 |
|
|
data_crc = 32'hccddeeff;
|
| 530 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 531 |
|
|
write_ahb(CRC_DR, data_crc, HALF_WORD);
|
| 532 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 533 |
|
|
|
| 534 |
|
|
|
| 535 |
|
|
read_ahb(CRC_DR, result);
|
| 536 |
|
|
golden = crc_32(data_crc[15:8], crc_32(data_crc[7:0], data_init));
|
| 537 |
|
|
compare(golden, result);
|
| 538 |
|
|
$display("%x", golden);
|
| 539 |
|
|
|
| 540 |
|
|
//Test Case 10: Test RESET, Data 8
|
| 541 |
|
|
data_init = 32'h14635287;
|
| 542 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 543 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET, WORD);
|
| 544 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 545 |
|
|
|
| 546 |
|
|
//Data 1
|
| 547 |
|
|
data_crc = 32'h00112233;
|
| 548 |
|
|
write_ahb(CRC_DR, data_crc, BYTE);
|
| 549 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 550 |
|
|
|
| 551 |
|
|
//Data 2
|
| 552 |
|
|
data_crc = 32'h44556677;
|
| 553 |
|
|
write_ahb(CRC_DR, data_crc, BYTE);
|
| 554 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 555 |
|
|
|
| 556 |
|
|
//Data 3
|
| 557 |
|
|
data_crc = 32'h8899aabb;
|
| 558 |
|
|
write_ahb(CRC_DR, data_crc, BYTE);
|
| 559 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 560 |
|
|
|
| 561 |
|
|
//Data 4
|
| 562 |
|
|
data_crc = 32'hccddeeff;
|
| 563 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 564 |
|
|
write_ahb(CRC_DR, data_crc, BYTE);
|
| 565 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 566 |
|
|
|
| 567 |
|
|
|
| 568 |
|
|
read_ahb(CRC_DR, result);
|
| 569 |
|
|
golden = crc_32(data_crc[7:0], data_init);
|
| 570 |
|
|
compare(golden, result);
|
| 571 |
|
|
$display("%x", golden);
|
| 572 |
|
|
|
| 573 |
|
|
//Test Case 11: Write-Write-Reset
|
| 574 |
|
|
data_init = 32'h146352dd;
|
| 575 |
|
|
write_ahb(CRC_POL, 32'h04c11db7, WORD);
|
| 576 |
|
|
write_ahb(CRC_CR, POLY_SIZE_32 | RESET, WORD);
|
| 577 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 578 |
|
|
|
| 579 |
|
|
//Data 1
|
| 580 |
|
|
data_crc = 32'h55112233;
|
| 581 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 582 |
|
|
golden = crc_32(data_crc[31:24], crc_32(data_crc[23:16], crc_32(data_crc[15:8], crc_32(data_crc[7:0], data_init))));
|
| 583 |
|
|
|
| 584 |
|
|
//Data 2
|
| 585 |
|
|
data_crc = 32'h44006677;
|
| 586 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 587 |
|
|
write_ahb(CRC_CR, RESET, WORD);
|
| 588 |
|
|
|
| 589 |
|
|
read_ahb(CRC_DR, result);
|
| 590 |
|
|
golden = crc_32(data_crc[31:24], crc_32(data_crc[23:16], crc_32(data_crc[15:8], crc_32(data_crc[7:0], golden))));
|
| 591 |
|
|
compare(golden, result);
|
| 592 |
|
|
$display("%x", golden);
|
| 593 |
|
|
|
| 594 |
|
|
//Data 3
|
| 595 |
|
|
data_crc = 32'h44005127;
|
| 596 |
|
|
data_init = 32'h11112222;
|
| 597 |
|
|
write_ahb(CRC_INIT, data_init, WORD);
|
| 598 |
|
|
write_ahb(CRC_DR, data_crc, WORD);
|
| 599 |
|
|
read_ahb(CRC_DR, result);
|
| 600 |
|
|
golden = crc_32(data_crc[31:24], crc_32(data_crc[23:16], crc_32(data_crc[15:8], crc_32(data_crc[7:0], data_init))));
|
| 601 |
|
|
compare(golden, result);
|
| 602 |
|
|
$display("%x", golden);
|
| 603 |
|
|
$stop;
|
| 604 |
|
|
end
|
| 605 |
|
|
|
| 606 |
|
|
always #10
|
| 607 |
|
|
HCLK = !HCLK;
|
| 608 |
|
|
|
| 609 |
|
|
function [31:0] rev_out;
|
| 610 |
|
|
input [31:0] in;
|
| 611 |
|
|
integer i;
|
| 612 |
|
|
begin
|
| 613 |
|
|
for(i = 0; i < 32; i = i + 1)
|
| 614 |
|
|
rev_out[i] = in[31 - i];
|
| 615 |
|
|
end
|
| 616 |
|
|
endfunction
|
| 617 |
|
|
|
| 618 |
|
|
function [31:0] crc_32;
|
| 619 |
|
|
|
| 620 |
|
|
input [7:0] Data;
|
| 621 |
|
|
input [31:0] crc;
|
| 622 |
|
|
reg [7:0] d;
|
| 623 |
|
|
reg [31:0] c;
|
| 624 |
|
|
reg [31:0] newcrc;
|
| 625 |
|
|
begin
|
| 626 |
|
|
d = Data;
|
| 627 |
|
|
c = crc;
|
| 628 |
|
|
|
| 629 |
|
|
newcrc[0] = d[6] ^ d[0] ^ c[24] ^ c[30];
|
| 630 |
|
|
newcrc[1] = d[7] ^ d[6] ^ d[1] ^ d[0] ^ c[24] ^ c[25] ^ c[30] ^ c[31];
|
| 631 |
|
|
newcrc[2] = d[7] ^ d[6] ^ d[2] ^ d[1] ^ d[0] ^ c[24] ^ c[25] ^ c[26] ^ c[30] ^ c[31];
|
| 632 |
|
|
newcrc[3] = d[7] ^ d[3] ^ d[2] ^ d[1] ^ c[25] ^ c[26] ^ c[27] ^ c[31];
|
| 633 |
|
|
newcrc[4] = d[6] ^ d[4] ^ d[3] ^ d[2] ^ d[0] ^ c[24] ^ c[26] ^ c[27] ^ c[28] ^ c[30];
|
| 634 |
|
|
newcrc[5] = d[7] ^ d[6] ^ d[5] ^ d[4] ^ d[3] ^ d[1] ^ d[0] ^ c[24] ^ c[25] ^ c[27] ^ c[28] ^ c[29] ^ c[30] ^ c[31];
|
| 635 |
|
|
newcrc[6] = d[7] ^ d[6] ^ d[5] ^ d[4] ^ d[2] ^ d[1] ^ c[25] ^ c[26] ^ c[28] ^ c[29] ^ c[30] ^ c[31];
|
| 636 |
|
|
newcrc[7] = d[7] ^ d[5] ^ d[3] ^ d[2] ^ d[0] ^ c[24] ^ c[26] ^ c[27] ^ c[29] ^ c[31];
|
| 637 |
|
|
newcrc[8] = d[4] ^ d[3] ^ d[1] ^ d[0] ^ c[0] ^ c[24] ^ c[25] ^ c[27] ^ c[28];
|
| 638 |
|
|
newcrc[9] = d[5] ^ d[4] ^ d[2] ^ d[1] ^ c[1] ^ c[25] ^ c[26] ^ c[28] ^ c[29];
|
| 639 |
|
|
newcrc[10] = d[5] ^ d[3] ^ d[2] ^ d[0] ^ c[2] ^ c[24] ^ c[26] ^ c[27] ^ c[29];
|
| 640 |
|
|
newcrc[11] = d[4] ^ d[3] ^ d[1] ^ d[0] ^ c[3] ^ c[24] ^ c[25] ^ c[27] ^ c[28];
|
| 641 |
|
|
newcrc[12] = d[6] ^ d[5] ^ d[4] ^ d[2] ^ d[1] ^ d[0] ^ c[4] ^ c[24] ^ c[25] ^ c[26] ^ c[28] ^ c[29] ^ c[30];
|
| 642 |
|
|
newcrc[13] = d[7] ^ d[6] ^ d[5] ^ d[3] ^ d[2] ^ d[1] ^ c[5] ^ c[25] ^ c[26] ^ c[27] ^ c[29] ^ c[30] ^ c[31];
|
| 643 |
|
|
newcrc[14] = d[7] ^ d[6] ^ d[4] ^ d[3] ^ d[2] ^ c[6] ^ c[26] ^ c[27] ^ c[28] ^ c[30] ^ c[31];
|
| 644 |
|
|
newcrc[15] = d[7] ^ d[5] ^ d[4] ^ d[3] ^ c[7] ^ c[27] ^ c[28] ^ c[29] ^ c[31];
|
| 645 |
|
|
newcrc[16] = d[5] ^ d[4] ^ d[0] ^ c[8] ^ c[24] ^ c[28] ^ c[29];
|
| 646 |
|
|
newcrc[17] = d[6] ^ d[5] ^ d[1] ^ c[9] ^ c[25] ^ c[29] ^ c[30];
|
| 647 |
|
|
newcrc[18] = d[7] ^ d[6] ^ d[2] ^ c[10] ^ c[26] ^ c[30] ^ c[31];
|
| 648 |
|
|
newcrc[19] = d[7] ^ d[3] ^ c[11] ^ c[27] ^ c[31];
|
| 649 |
|
|
newcrc[20] = d[4] ^ c[12] ^ c[28];
|
| 650 |
|
|
newcrc[21] = d[5] ^ c[13] ^ c[29];
|
| 651 |
|
|
newcrc[22] = d[0] ^ c[14] ^ c[24];
|
| 652 |
|
|
newcrc[23] = d[6] ^ d[1] ^ d[0] ^ c[15] ^ c[24] ^ c[25] ^ c[30];
|
| 653 |
|
|
newcrc[24] = d[7] ^ d[2] ^ d[1] ^ c[16] ^ c[25] ^ c[26] ^ c[31];
|
| 654 |
|
|
newcrc[25] = d[3] ^ d[2] ^ c[17] ^ c[26] ^ c[27];
|
| 655 |
|
|
newcrc[26] = d[6] ^ d[4] ^ d[3] ^ d[0] ^ c[18] ^ c[24] ^ c[27] ^ c[28] ^ c[30];
|
| 656 |
|
|
newcrc[27] = d[7] ^ d[5] ^ d[4] ^ d[1] ^ c[19] ^ c[25] ^ c[28] ^ c[29] ^ c[31];
|
| 657 |
|
|
newcrc[28] = d[6] ^ d[5] ^ d[2] ^ c[20] ^ c[26] ^ c[29] ^ c[30];
|
| 658 |
|
|
newcrc[29] = d[7] ^ d[6] ^ d[3] ^ c[21] ^ c[27] ^ c[30] ^ c[31];
|
| 659 |
|
|
newcrc[30] = d[7] ^ d[4] ^ c[22] ^ c[28] ^ c[31];
|
| 660 |
|
|
newcrc[31] = d[5] ^ c[23] ^ c[29];
|
| 661 |
|
|
crc_32 = newcrc;
|
| 662 |
|
|
end
|
| 663 |
|
|
endfunction
|
| 664 |
|
|
|
| 665 |
|
|
function [15:0] crc_16;
|
| 666 |
|
|
|
| 667 |
|
|
input [7:0] Data;
|
| 668 |
|
|
input [15:0] crc;
|
| 669 |
|
|
reg [7:0] d;
|
| 670 |
|
|
reg [15:0] c;
|
| 671 |
|
|
reg [15:0] newcrc;
|
| 672 |
|
|
begin
|
| 673 |
|
|
d = Data;
|
| 674 |
|
|
c = crc;
|
| 675 |
|
|
|
| 676 |
|
|
newcrc[0] = d[7] ^ d[6] ^ d[5] ^ d[4] ^ d[3] ^ d[2] ^ d[1] ^ d[0] ^ c[8] ^ c[9] ^ c[10] ^ c[11] ^ c[12] ^ c[13] ^ c[14] ^ c[15];
|
| 677 |
|
|
newcrc[1] = d[7] ^ d[6] ^ d[5] ^ d[4] ^ d[3] ^ d[2] ^ d[1] ^ c[9] ^ c[10] ^ c[11] ^ c[12] ^ c[13] ^ c[14] ^ c[15];
|
| 678 |
|
|
newcrc[2] = d[1] ^ d[0] ^ c[8] ^ c[9];
|
| 679 |
|
|
newcrc[3] = d[2] ^ d[1] ^ c[9] ^ c[10];
|
| 680 |
|
|
newcrc[4] = d[3] ^ d[2] ^ c[10] ^ c[11];
|
| 681 |
|
|
newcrc[5] = d[4] ^ d[3] ^ c[11] ^ c[12];
|
| 682 |
|
|
newcrc[6] = d[5] ^ d[4] ^ c[12] ^ c[13];
|
| 683 |
|
|
newcrc[7] = d[6] ^ d[5] ^ c[13] ^ c[14];
|
| 684 |
|
|
newcrc[8] = d[7] ^ d[6] ^ c[0] ^ c[14] ^ c[15];
|
| 685 |
|
|
newcrc[9] = d[7] ^ c[1] ^ c[15];
|
| 686 |
|
|
newcrc[10] = c[2];
|
| 687 |
|
|
newcrc[11] = c[3];
|
| 688 |
|
|
newcrc[12] = c[4];
|
| 689 |
|
|
newcrc[13] = c[5];
|
| 690 |
|
|
newcrc[14] = c[6];
|
| 691 |
|
|
newcrc[15] = d[7] ^ d[6] ^ d[5] ^ d[4] ^ d[3] ^ d[2] ^ d[1] ^ d[0] ^ c[7] ^ c[8] ^ c[9] ^ c[10] ^ c[11] ^ c[12] ^ c[13] ^ c[14] ^ c[15];
|
| 692 |
|
|
crc_16 = newcrc;
|
| 693 |
|
|
end
|
| 694 |
|
|
endfunction
|
| 695 |
|
|
|
| 696 |
|
|
function [7:0] crc_8;
|
| 697 |
|
|
|
| 698 |
|
|
input [7:0] Data;
|
| 699 |
|
|
input [7:0] crc;
|
| 700 |
|
|
reg [7:0] d;
|
| 701 |
|
|
reg [7:0] c;
|
| 702 |
|
|
reg [7:0] newcrc;
|
| 703 |
|
|
begin
|
| 704 |
|
|
d = Data;
|
| 705 |
|
|
c = crc;
|
| 706 |
|
|
|
| 707 |
|
|
newcrc[0] = d[7] ^ d[6] ^ d[0] ^ c[0] ^ c[6] ^ c[7];
|
| 708 |
|
|
newcrc[1] = d[6] ^ d[1] ^ d[0] ^ c[0] ^ c[1] ^ c[6];
|
| 709 |
|
|
newcrc[2] = d[6] ^ d[2] ^ d[1] ^ d[0] ^ c[0] ^ c[1] ^ c[2] ^ c[6];
|
| 710 |
|
|
newcrc[3] = d[7] ^ d[3] ^ d[2] ^ d[1] ^ c[1] ^ c[2] ^ c[3] ^ c[7];
|
| 711 |
|
|
newcrc[4] = d[4] ^ d[3] ^ d[2] ^ c[2] ^ c[3] ^ c[4];
|
| 712 |
|
|
newcrc[5] = d[5] ^ d[4] ^ d[3] ^ c[3] ^ c[4] ^ c[5];
|
| 713 |
|
|
newcrc[6] = d[6] ^ d[5] ^ d[4] ^ c[4] ^ c[5] ^ c[6];
|
| 714 |
|
|
newcrc[7] = d[7] ^ d[6] ^ d[5] ^ c[5] ^ c[6] ^ c[7];
|
| 715 |
|
|
crc_8 = newcrc;
|
| 716 |
|
|
end
|
| 717 |
|
|
endfunction
|
| 718 |
|
|
|
| 719 |
|
|
function [6:0] crc_7;
|
| 720 |
|
|
|
| 721 |
|
|
input [7:0] Data;
|
| 722 |
|
|
input [6:0] crc;
|
| 723 |
|
|
reg [7:0] d;
|
| 724 |
|
|
reg [6:0] c;
|
| 725 |
|
|
reg [6:0] newcrc;
|
| 726 |
|
|
begin
|
| 727 |
|
|
d = Data;
|
| 728 |
|
|
c = crc;
|
| 729 |
|
|
|
| 730 |
|
|
newcrc[0] = d[7] ^ d[6] ^ d[5] ^ d[0] ^ c[4] ^ c[5] ^ c[6];
|
| 731 |
|
|
newcrc[1] = d[5] ^ d[1] ^ d[0] ^ c[0] ^ c[4];
|
| 732 |
|
|
newcrc[2] = d[7] ^ d[5] ^ d[2] ^ d[1] ^ d[0] ^ c[0] ^ c[1] ^ c[4] ^ c[6];
|
| 733 |
|
|
newcrc[3] = d[6] ^ d[3] ^ d[2] ^ d[1] ^ c[0] ^ c[1] ^ c[2] ^ c[5];
|
| 734 |
|
|
newcrc[4] = d[7] ^ d[4] ^ d[3] ^ d[2] ^ c[1] ^ c[2] ^ c[3] ^ c[6];
|
| 735 |
|
|
newcrc[5] = d[5] ^ d[4] ^ d[3] ^ c[2] ^ c[3] ^ c[4];
|
| 736 |
|
|
newcrc[6] = d[6] ^ d[5] ^ d[4] ^ c[3] ^ c[4] ^ c[5];
|
| 737 |
|
|
crc_7 = newcrc;
|
| 738 |
|
|
end
|
| 739 |
|
|
endfunction
|
| 740 |
|
|
endmodule
|
