Subversion Repositories openrisc_2011-10-31

//////////////////////////////////////////////////////////////////////

////                                                              ////

////  OR1K_startup                                                ////

////                                                              ////

////  This file is part of the OR1K startup IP core project       ////

////  http://www.opencores.org/                                   ////

////                                                              ////

////  Author(s):                                                  ////

////      - Michael Unneback (unneback@opencores.org)             ////

////                                                              ////

////  All additional information is avaliable in the Readme.txt   ////

////  file.                                                       ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2009 Authors                                   ////

////                                                              ////

//// This source file may be used and distributed without         ////

//// restriction provided that this copyright statement is not    ////

//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

////                                                              ////

//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 2.1 of the License, or (at your option) any   ////

//// later version.                                               ////

////                                                              ////

//// This source is distributed in the hope that it will be       ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////

//// PURPOSE.  See the GNU Lesser General Public License for more ////

//// details.                                                     ////

////                                                              ////

//// You should have received a copy of the GNU Lesser General    ////

//// Public License along with this source; if not, download it   ////

//// from http://www.opencores.org/lgpl.shtml                     ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

module OR1K_startup

  (

    input [6:2]       wb_adr_i,

    input             wb_stb_i,

    input             wb_cyc_i,

    output reg [31:0] wb_dat_o,

    output reg        wb_ack_o,

    input             wb_clk,

    input             wb_rst

   );

   always @ (posedge wb_clk or posedge wb_rst)

     if (wb_rst)

       wb_dat_o <= 32'h15000000;

     else

       case (wb_adr_i)

          1 : wb_dat_o <= 32'hA8200000;

          2 : wb_dat_o <= 32'h1880B000;

          3 : wb_dat_o <= 32'hA8A00520;

          4 : wb_dat_o <= 32'hA8600001;

          5 : wb_dat_o <= 32'h04000014;

          6 : wb_dat_o <= 32'hD4041818;

          7 : wb_dat_o <= 32'h04000012;

          8 : wb_dat_o <= 32'hD4040000;

          9 : wb_dat_o <= 32'hE0431804;

         10 : wb_dat_o <= 32'h0400000F;

         11 : wb_dat_o <= 32'h9C210008;

         12 : wb_dat_o <= 32'h0400000D;

         13 : wb_dat_o <= 32'hE1031804;

         14 : wb_dat_o <= 32'hE4080000;

         15 : wb_dat_o <= 32'h0FFFFFFB;

         16 : wb_dat_o <= 32'hD4081800;

         17 : wb_dat_o <= 32'h04000008;

         18 : wb_dat_o <= 32'h9C210004;

         19 : wb_dat_o <= 32'hD4011800;

         20 : wb_dat_o <= 32'hE4011000;

         21 : wb_dat_o <= 32'h0FFFFFFC;

         22 : wb_dat_o <= 32'hA8C00100;

         23 : wb_dat_o <= 32'h44003000;

         24 : wb_dat_o <= 32'hD4040018;

         25 : wb_dat_o <= 32'hD4042810;

         26 : wb_dat_o <= 32'h84640010;

         27 : wb_dat_o <= 32'hBC030520;

         28 : wb_dat_o <= 32'h13FFFFFE;

         29 : wb_dat_o <= 32'h15000000;

         30 : wb_dat_o <= 32'h44004800;

         31 : wb_dat_o <= 32'h84640000;

       endcase

   always @ (posedge wb_clk or posedge wb_rst)

     if (wb_rst)

       wb_ack_o <= 1'b0;

     else

       wb_ack_o <= wb_stb_i & wb_cyc_i & !wb_ack_o;

endmodule