Subversion Repositories socgen

eval 'exec `which perl` -S $0 ${1+"$@"}'
   if 0;

#/**********************************************************************/
#/*                                                                    */
#/*             -------                                                */
#/*            /   SOC  \                                              */
#/*           /    GEN   \                                             */
#/*          /    TOOL    \                                            */
#/*          ==============                                            */
#/*          |            |                                            */
#/*          |____________|                                            */
#/*                                                                    */
#/*  Converts a intel hex file into a 12 bit verilog readmemh format   */
#/*                                                                    */
#/*                                                                    */
#/*  Author(s):                                                        */
#/*      - John Eaton, jt_eaton@opencores.org                          */
#/*                                                                    */
#/**********************************************************************/
#/*                                                                    */
#/*    Copyright (C) <2010>  <Ouabache Design Works>                   */
#/*                                                                    */
#/*  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                          */
#/*                                                                    */
#/**********************************************************************/

# ToDO: add handling unaligned words


############################################################################
# General PERL config
############################################################################
use Getopt::Long;
use English;
use File::Basename;

$OUTPUT_AUTOFLUSH = 1; # set autoflush of stdout to TRUE.


############################################################################
### Process the options
############################################################################

Getopt::Long::config("require_order", "prefix=-");
GetOptions("h"
) || die "(use '$program_name -h' for help)";


##############################################################################
## Help option
##############################################################################
if ( ($opt_h eq "1") ) 
  { print "\n type test filename ( no extension)";
    print "\n";
    exit 1;
  }



#############################################################################
## 
##  open intel hex  file  and read into array
## 
#############################################################################

  my $prog_name         = $ARGV[0];

  my $input_file   = ${prog_name}.".hex";
  my $output_file  = ${prog_name}.".abs12";


  print "Reading hex File  $input_file\n";  
  print "Writing abs File  $output_file\n";  


  open  VERILOG , ">  $output_file";
  open   FILE, $input_file;

  open  DEFINES , ">  ROM_defines.v";

  while(<FILE>){push @intel_hex, $_  ;}


#############################################################################
## 
##  Clear a storage area for the 12 bit words
## 
#############################################################################


   my  $x=0;
      while( $x <= 65535) 
           {    
           @Mem[$x] = "000";
            $x = $x+1;
           }


#############################################################################
## 
##  Parse Data  into storage converting from 8 bit bytes to 16 bit words
## 
#############################################################################
 
my  $pointer     = 0;
my $max_pointer = 0;
my $start_address = 65536;


  foreach $line (@intel_hex)
    {
    $colon     = substr($line, 0,1);
    $length    = (cvt(substr($line, 1,1))* 16) +   cvt(substr($line, 2,1));
    $address   = cvt(substr($line, 3,1));
    $address   = cvt(substr($line, 4,1))+($address *16)  ;
    $address   = cvt(substr($line, 5,1))+($address *16)  ;
    $address   = cvt(substr($line, 6,1))+($address *16)  ;
    $type      = substr($line, 7,2);



    if(($type eq  "00")          )

      {
      if( $address <= $start_address) {$start_address = $address;}
      $x=9;
      while( $x <= 7+($length *2)) 
           {    
           $value_E = substr($line, $x,2);
           $value_O = substr($line, $x+3,1);
           $pointer = (($address/2) +($x-9)/4);
           if( $pointer > $max_pointer ) {$max_pointer = $pointer}
           @Mem[$pointer] = $value_O.$value_E;
           $x= $x+4;
           }


     }




    }


#############################################################################
## 
##  dump out up to the last word, undefined space is 000
## 
#############################################################################

      $x = ($start_address/2);
      while( $x <= ($max_pointer)) 
           {    
           printf VERILOG ("%s\n",@Mem[$x]);
           $x = $x+1;
           }


        $words =  ($max_pointer) - ($start_address/2)+1;
       printf DEFINES ("`define PROG_FILE  /${prog_name}.abs12\n"  );
       printf DEFINES ("`define ROM_WIDTH 12\n"  );
       printf DEFINES ("`define ROM_WORDS $words \n"  );


#############################################################################
## 
##  convert 0-9,A-F to decimal or 0 if out of range
## 
#############################################################################


sub cvt { 

$temp =    ord($_[0]);
if( $temp <= 48) { return 0 }
if( $temp <= 58) { return $temp - 48 }
if( $temp <= 64) { return 0 }
if( $temp <= 70) { return ($temp - 65)+10 }
return 0;



}




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