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jt_eaton |
eval 'exec `which perl` -S $0 ${1+"$@"}'
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if 0;
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#/**********************************************************************/
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#/* */
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#/* ------- */
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#/* / SOC \ */
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#/* / GEN \ */
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#/* / TOOL \ */
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#/* ============== */
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#/* | | */
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#/* |____________| */
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#/* */
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#/* Converts a intel hex file into a 12 bit verilog readmemh format */
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#/* */
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#/* */
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#/* Author(s): */
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#/* - John Eaton, jt_eaton@opencores.org */
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#/* */
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#/**********************************************************************/
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#/* */
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#/* Copyright (C) <2010> */
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#/* */
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#/* This source file may be used and distributed without */
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#/* restriction provided that this copyright statement is not */
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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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#/* This source file is free software; you can redistribute it */
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#/* and/or modify it under the terms of the GNU Lesser General */
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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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#/* later version. */
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#/* */
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#/* This source is distributed in the hope that it will be */
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#/* useful, but WITHOUT ANY WARRANTY; without even the implied */
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#/* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR */
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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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#/* You should have received a copy of the GNU Lesser General */
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#/* Public License along with this source; if not, download it */
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#/* from http://www.opencores.org/lgpl.shtml */
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#/* */
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#/**********************************************************************/
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# ToDO: add handling unaligned words
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############################################################################
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# General PERL config
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############################################################################
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use Getopt::Long;
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use English;
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use File::Basename;
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$OUTPUT_AUTOFLUSH = 1; # set autoflush of stdout to TRUE.
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############################################################################
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### Process the options
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############################################################################
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Getopt::Long::config("require_order", "prefix=-");
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GetOptions("h"
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) || die "(use '$program_name -h' for help)";
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##############################################################################
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## Help option
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##############################################################################
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if ( ($opt_h eq "1") )
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{ print "\n type test filename ( no extension)";
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print "\n";
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exit 1;
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}
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#############################################################################
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##
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## open intel hex file and read into array
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##
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#############################################################################
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my $prog_name = $ARGV[0];
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my $input_file = ${prog_name}.".hex";
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my $output_file = ${prog_name}.".abs12";
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print "Reading hex File $input_file\n";
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print "Writing abs File $output_file\n";
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open VERILOG , "> $output_file";
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open FILE, $input_file;
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open DEFINES , "> ROM_defines.v";
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while(){push @intel_hex, $_ ;}
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#############################################################################
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##
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## Clear a storage area for the 12 bit words
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##
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#############################################################################
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my $x=0;
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while( $x <= 65535)
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{
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@Mem[$x] = "000";
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$x = $x+1;
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}
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#############################################################################
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##
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## Parse Data into storage converting from 8 bit bytes to 16 bit words
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##
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#############################################################################
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my $pointer = 0;
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my $max_pointer = 0;
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my $start_address = 65536;
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| 130 |
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foreach $line (@intel_hex)
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{
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$colon = substr($line, 0,1);
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$length = (cvt(substr($line, 1,1))* 16) + cvt(substr($line, 2,1));
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$address = cvt(substr($line, 3,1));
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$address = cvt(substr($line, 4,1))+($address *16) ;
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$address = cvt(substr($line, 5,1))+($address *16) ;
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$address = cvt(substr($line, 6,1))+($address *16) ;
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$type = substr($line, 7,2);
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if(($type eq "00") )
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{
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if( $address <= $start_address) {$start_address = $address;}
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$x=9;
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while( $x <= 7+($length *2))
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{
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$value_E = substr($line, $x,2);
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$value_O = substr($line, $x+3,1);
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$pointer = (($address/2) +($x-9)/4);
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if( $pointer > $max_pointer ) {$max_pointer = $pointer}
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@Mem[$pointer] = $value_O.$value_E;
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$x= $x+4;
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}
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}
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}
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#############################################################################
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##
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## dump out up to the last word, undefined space is 000
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##
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#############################################################################
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$x = ($start_address/2);
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while( $x <= ($max_pointer))
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{
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printf VERILOG ("%s\n",@Mem[$x]);
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$x = $x+1;
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}
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$words = ($max_pointer) - ($start_address/2)+1;
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printf DEFINES ("`define PROG_FILE /${prog_name}.abs12\n" );
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printf DEFINES ("`define ROM_WIDTH 12\n" );
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printf DEFINES ("`define ROM_WORDS $words \n" );
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#############################################################################
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##
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## convert 0-9,A-F to decimal or 0 if out of range
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##
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#############################################################################
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sub cvt {
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$temp = ord($_[0]);
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if( $temp <= 48) { return 0 }
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if( $temp <= 58) { return $temp - 48 }
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if( $temp <= 64) { return 0 }
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if( $temp <= 70) { return ($temp - 65)+10 }
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return 0;
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}
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1
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