53 lines
1.1 KiB
Plaintext
53 lines
1.1 KiB
Plaintext
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#!/usr/bin/perl
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use strict;
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use warnings;
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use IO::File;
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sub usage() {
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print STDERR "Usage: unscramble SileadTouch.fw gsl_ts.fw\n";
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print STDERR "Converts a scrambled Silead Windows driver firmware image into legacy binary format.\n";
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-1;
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}
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my $scrfile = $ARGV[0] or exit usage;
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my $fwfile = $ARGV[1] or exit usage;
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my $scrambled = '';
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do {
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my $in = IO::File->new($scrfile, 'r') or die "Can't open $scrfile: $!";
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$in->binmode();
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local $/;
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$scrambled = <$in>;
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defined $scrambled or die "Can't read firmware: $!";
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$in->close();
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};
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my $unscrambled = '';
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for my $char (split //, $scrambled) {
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$unscrambled .= chr(ord($char) ^ 0x88);
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}
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my $out = IO::File->new($fwfile, 'w') or die "Can't open $fwfile: $!";
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my $cfg = 0;
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for my $line (split /\n/, $unscrambled) {
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if ($cfg and $line =~ /};/) {
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$cfg = 0;
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}
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if ($line =~ /TS_CFG_DATA/) {
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$cfg = 1;
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}
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if ($cfg) {
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$line =~ s/\s//g;
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$line = lc($line);
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if ($line =~ /{0x([0-9a-f]+),0x([0-9a-f]+)},/) {
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my $address = hex($1);
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my $data = hex($2);
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print $out pack('(LL)<', $address, $data) or die "Can't write to output: $!";;
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}
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}
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}
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$out->close();
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