mirror of
https://gitlab.alpinelinux.org/alpine/aports.git
synced 2026-01-03 07:42:10 +01:00
b97562ef09
- rpi bootloader needs specially marked binaries for device tree so use trimmed down markdt script to do it - move overlay dtbs to overlays subdirectory - make af_packet a module
56 lines
1.4 KiB
Perl
Executable File
56 lines
1.4 KiB
Perl
Executable File
#!/usr/bin/env perl
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# ----------------------------------------------------------------------
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# markdt by Timo Teräs
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# based on mkknlimg by Phil Elwell for Raspberry Pi
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# based on extract-ikconfig Dick Streefland
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#
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# (c) 2009,2010 Dick Streefland <dick@streefland.net>
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# (c) 2014,2015 Raspberry Pi (Trading) Limited <info@raspberrypi.org>
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# (c) 2015 Timo Teräs <timo.teras@iki.fi>
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#
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# Licensed under the terms of the GNU General Public License.
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# ----------------------------------------------------------------------
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use strict;
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use integer;
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usage() if (@ARGV != 1);
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my $out_file = $ARGV[0];
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my $trailer_magic = 'RPTL';
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my $trailer;
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my $dtok = 1;
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my $ofh;
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my $total_len = 0;
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sub pack_trailer
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{
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my ($atoms) = @_;
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my $trailer = pack('VV', 0, 0);
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for (my $i = $#$atoms; $i>=0; $i--)
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{
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my $atom = $atoms->[$i];
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$trailer .= pack('a*x!4Va4', $atom->[1], length($atom->[1]), $atom->[0]);
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}
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return $trailer;
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}
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# Construct the trailer
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my @atoms;
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push @atoms, [ $trailer_magic, pack('V', 0) ];
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push @atoms, [ 'DTOK', pack('V', $dtok) ];
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$trailer = pack_trailer(\@atoms);
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$atoms[0]->[1] = pack('V', length($trailer));
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$trailer = pack_trailer(\@atoms);
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# Write the trailer aligned to 4-byte boundary
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die "* Failed to open '$out_file' for append\n" if (!open($ofh, '>>', $out_file));
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$total_len = tell($ofh);
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syswrite($ofh, "\x000\x000\x000", (-$total_len & 0x3));
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syswrite($ofh, $trailer);
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close($ofh);
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exit(0);
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