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Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [or1k_startup/] [sw/] [srec2v.pl] - Blame information for rev 228

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Line No. Rev Author Line
1 2 marcus.erl
#!/usr/bin/perl -w
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use strict;
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use IO::File;
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# (C) 2003-2007 Willem Jan Hengeveld <itsme@xs4all.nl>
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# Web: http://www.xs4all.nl/~itsme/
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#      http://wiki.xda-developers.com/
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#
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# $Id$
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# 
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# perl script to decode srecord files.
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# 
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# specifically written to decode the radio part updates for the 
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# xda1/ htc-wallaby.
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#
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#   perl srec.pl RSUpgrade.cp64 -l 4 -w -o rsu
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#   perl srec.pl monitor_ul_bs.m0 -o mon
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use Getopt::Long;
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my $outfile="out";
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my $lenlen=2;
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my $dowordswap= 0;
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my $maxgap= 1;
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GetOptions(
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    "o=s" => \$outfile,
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    "l=i" => \$lenlen,
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    "m=s" => sub { $maxgap= eval($_[1]) },
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    "w" => \$dowordswap)
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    or die "Usage: srec [-o=OUTPREFIX] [-l={4|2}] [-w {swap}] [-m=MAXGAP]\n";
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my %data;
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# s-records have the following format:
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#   "S" + 1 byte  type
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#   2 hex digits :  length  ( of rest of line - incl address and checksum )
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#   4,6,8 hex digits address ( for type 1, 2, 3 )
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#   hex data [ 0..64 bytes ]
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#   checksum [ 1 byte ]   such that unpack('%8C*', pack('H*', $line))==0xff
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#            ( or checksum=0xff-sum(otherbytes)
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#
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#
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#   type S0 : version  : char mname[10], byte ver, byte rev, char description[18]
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#           or usually : 00 00 + 'HDR'
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#   type S1 : 2 byte address + data
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#   type S2 : 3 byte address + data
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#   type S3 : 4 byte address + data
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#   type S5 : 2 byte count of S1, S2, S3 records transmitted
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#   type S7 : 4 byte entrypoint address
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#   type S8 : 3 byte entrypoint address
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#   type S9 : 2 byte entrypoint address
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while (<>) {
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    my $type= hex(substr($_, 1,1));
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    my $length= hex(substr($_,2,$lenlen));
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    my $adrlen= $type eq "1" ? 4 : $type eq "2" ? 6 :  $type eq "3" ? 8 : 0;
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    next if (!$adrlen);
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    my $address= hex(substr($_,2+$lenlen,$adrlen));
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    my $data= pack("H*", substr($_,2+$lenlen+$adrlen, 2*$length-$adrlen-2));
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    if ($dowordswap) {
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        $data= pack('v*', unpack('n*',$data));
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    }
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    $data{$address}= $data;
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}
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#     |---------|...|
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#                  |-----|
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#
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my @addrs= sort { $a <=> $b } keys %data;
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my $fh;
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for (0..$#addrs) {
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    my $startcur= $addrs[$_];
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    if ($_>0) {
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        my $startlast= $addrs[$_-1];
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        my $endlast= length($data{$startlast})+ $startlast;
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        if ($endlast +$maxgap <= $startcur) {
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            printf("  %08lx-%08lx .. gap .. %08lx\n", $startlast, $endlast, $startcur);
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            $fh->close();
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            undef $fh;
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        }
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        elsif ($endlast < $startcur ) {
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            $fh->seek($startcur-$endlast, SEEK_CUR);
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        }
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        elsif ($endlast > $startcur) {
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            printf("WARNING: overlap found: %08lx-%08lx ~ %08lx\n", $startlast, $endlast, $startcur);
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            $fh->close();
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            undef $fh;
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        }
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    }
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    if (!$fh) {
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        $fh= IO::File->new(sprintf("%s-%08lx.bin", $outfile, $startcur), "w");
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        binmode($fh);
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    }
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    $fh->print($data{$startcur});
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}
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$fh->close();
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#print map { $data{$_} } sort keys %data;
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