+++ /dev/null
-#!/usr/bin/env perl
-#
-# Originaly from: https://github.com/raspberrypi/tools/blob/master/mkimage/mkknlimg
-# Original cset : f5642106425d430e1f82ee064121a5fd0e05a386
-#
-# ----------------------------------------------------------------------
-# mkknlimg by Phil Elwell for Raspberry Pi
-# based on extract-ikconfig by Dick Streefland
-#
-# (c) 2009,2010 Dick Streefland <dick@streefland.net>
-# (c) 2014,2015 Raspberry Pi (Trading) Limited <info@raspberrypi.org>
-#
-# Licensed under the terms of the GNU General Public License.
-# ----------------------------------------------------------------------
-
-use strict;
-use warnings;
-use integer;
-
-use constant FLAG_PI => 1;
-use constant FLAG_DTOK => 2;
-use constant FLAG_DDTK => 4;
-use constant FLAG_283X => 8;
-
-my $trailer_magic = 'RPTL';
-
-my $tmpfile1 = "/tmp/mkknlimg_$$.1";
-my $tmpfile2 = "/tmp/mkknlimg_$$.2";
-
-my $dtok = 0;
-my $ddtk = 0;
-my $is_283x = 0;
-
-while (@ARGV && ($ARGV[0] =~ /^-/))
-{
- my $arg = shift(@ARGV);
- if ($arg eq '--dtok')
- {
- $dtok = 1;
- }
- elsif ($arg eq '--ddtk')
- {
- $ddtk = 1;
- }
- elsif ($arg eq '--283x')
- {
- $is_283x = 1;
- }
- else
- {
- print ("* Unknown option '$arg'\n");
- usage();
- }
-}
-
-usage() if (@ARGV != 2);
-
-my $kernel_file = $ARGV[0];
-my $out_file = $ARGV[1];
-
-if (! -r $kernel_file)
-{
- print ("* File '$kernel_file' not found\n");
- usage();
-}
-
-my $wanted_configs =
-{
- 'CONFIG_BCM2708_DT' => FLAG_PI | FLAG_DTOK,
- 'CONFIG_ARCH_BCM2835' => FLAG_PI | FLAG_DTOK | FLAG_283X,
-};
-
-my $wanted_strings =
-{
- 'bcm2708_fb' => FLAG_PI,
- 'brcm,bcm2835-mmc' => FLAG_PI,
- 'brcm,bcm2835-sdhost' => FLAG_PI,
- 'brcm,bcm2708-pinctrl' => FLAG_PI | FLAG_DTOK,
- 'brcm,bcm2835-gpio' => FLAG_PI | FLAG_DTOK,
- 'brcm,bcm2835-pm-wdt' => FLAG_PI | FLAG_DTOK | FLAG_283X,
- 'of_overlay_apply' => FLAG_DTOK | FLAG_DDTK,
-};
-
-my $res = try_extract($kernel_file, $tmpfile1);
-$res ||= try_decompress('\037\213\010', 'xy', 'gunzip', 0,
- $kernel_file, $tmpfile1, $tmpfile2);
-$res ||= try_decompress('\3757zXZ\000', 'abcde', 'unxz --single-stream', -1,
- $kernel_file, $tmpfile1, $tmpfile2);
-$res ||= try_decompress('BZh', 'xy', 'bunzip2', 0,
- $kernel_file, $tmpfile1, $tmpfile2);
-$res ||= try_decompress('\135\0\0\0', 'xxx', 'unlzma', 0,
- $kernel_file, $tmpfile1, $tmpfile2);
-$res ||= try_decompress('\211\114\132', 'xy', 'lzop -d', 0,
- $kernel_file, $tmpfile1, $tmpfile2);
-$res ||= try_decompress('\002\041\114\030', 'xy', 'lz4 -d', 1,
- $kernel_file, $tmpfile1, $tmpfile2);
-
-my $append_trailer;
-my $trailer;
-my $kver = '?';
-
-$append_trailer = $dtok;
-
-if ($res)
-{
- $kver = $res->{'kver'} || '?';
- my $flags = $res->{'flags'};
- print("Version: $kver\n");
-
- if ($flags & FLAG_PI)
- {
- $append_trailer = 1;
- $dtok ||= ($flags & FLAG_DTOK) != 0;
- $is_283x ||= ($flags & FLAG_283X) != 0;
- $ddtk ||= ($flags & FLAG_DDTK) != 0;
- }
- else
- {
- print ("* This doesn't look like a Raspberry Pi kernel. In pass-through mode.\n");
- }
-}
-elsif (!$dtok)
-{
- print ("* Is this a valid kernel? In pass-through mode.\n");
-}
-
-if ($append_trailer)
-{
- printf("DT: %s\n", $dtok ? "y" : "n");
- printf("DDT: %s\n", $ddtk ? "y" : "n");
- printf("283x: %s\n", $is_283x ? "y" : "n");
-
- my @atoms;
-
- push @atoms, [ $trailer_magic, pack('V', 0) ];
- push @atoms, [ 'KVer', $kver ];
- push @atoms, [ 'DTOK', pack('V', $dtok) ];
- push @atoms, [ 'DDTK', pack('V', $ddtk) ];
- push @atoms, [ '283x', pack('V', $is_283x) ];
-
- $trailer = pack_trailer(\@atoms);
- $atoms[0]->[1] = pack('V', length($trailer));
-
- $trailer = pack_trailer(\@atoms);
-}
-
-my $ofh;
-my $total_len = 0;
-
-if ($out_file eq $kernel_file)
-{
- die "* Failed to open '$out_file' for append\n"
- if (!open($ofh, '>>', $out_file));
- $total_len = tell($ofh);
-}
-else
-{
- die "* Failed to open '$kernel_file'\n"
- if (!open(my $ifh, '<', $kernel_file));
- die "* Failed to create '$out_file'\n"
- if (!open($ofh, '>', $out_file));
-
- my $copybuf;
- while (1)
- {
- my $bytes = sysread($ifh, $copybuf, 64*1024);
- last if (!$bytes);
- syswrite($ofh, $copybuf, $bytes);
- $total_len += $bytes;
- }
- close($ifh);
-}
-
-if ($trailer)
-{
- # Pad to word-alignment
- syswrite($ofh, "\x000\x000\x000", (-$total_len & 0x3));
- syswrite($ofh, $trailer);
-}
-
-close($ofh);
-
-exit($trailer ? 0 : 1);
-
-END {
- unlink($tmpfile1) if ($tmpfile1);
- unlink($tmpfile2) if ($tmpfile2);
-}
-
-
-sub usage
-{
- print ("Usage: mkknlimg [--dtok] [--283x] <vmlinux|zImage|bzImage> <outfile>\n");
- exit(1);
-}
-
-sub try_extract
-{
- my ($knl, $tmp) = @_;
-
- my $ver = `strings "$knl" | grep -a -E "^Linux version [1-9]"`;
-
- return undef if (!$ver);
-
- chomp($ver);
-
- my $res = { 'kver'=>$ver };
- $res->{'flags'} = strings_to_flags($knl, $wanted_strings) |
- configs_to_flags($knl, $tmp, $wanted_configs);
-
- return $res;
-}
-
-
-sub try_decompress
-{
- my ($magic, $subst, $zcat, $idx, $knl, $tmp1, $tmp2) = @_;
-
- my $pos = `tr "$magic\n$subst" "\n$subst=" < "$knl" | grep -abo "^$subst"`;
- if ($pos)
- {
- chomp($pos);
- $pos = (split(/[\r\n]+/, $pos))[$idx];
- return undef if (!defined($pos));
- $pos =~ s/:.*[\r\n]*$//s;
- my $cmd = "tail -c+$pos \"$knl\" | $zcat > $tmp2 2> /dev/null";
- my $err = (system($cmd) >> 8);
- return undef if (($err != 0) && ($err != 2));
-
- return try_extract($tmp2, $tmp1);
- }
-
- return undef;
-}
-
-
-sub strings_to_flags
-{
- my ($knl, $strings) = @_;
- my $string_pattern = '^('.join('|', keys(%$strings)).')$';
- my $flags = 0;
-
- my @matches = `strings \"$knl\" | grep -E \"$string_pattern\"`;
- foreach my $match (@matches)
- {
- chomp($match);
- $flags |= $strings->{$match};
- }
-
- return $flags;
-}
-
-sub configs_to_flags
-{
- my ($knl, $tmp, $configs) = @_;
- my $config_pattern = '^('.join('|', keys(%$configs)).')=(.*)$';
- my $cf1 = 'IKCFG_ST\037\213\010';
- my $cf2 = '0123456789';
- my $flags = 0;
-
- my $pos = `tr "$cf1\n$cf2" "\n$cf2=" < "$knl" | grep -abo "^$cf2"`;
- if ($pos)
- {
- $pos =~ s/:.*[\r\n]*$//s;
- $pos += 8;
- my $err = (system("tail -c+$pos \"$knl\" | zcat > $tmp 2> /dev/null") >> 8);
- if (($err == 0) || ($err == 2))
- {
- if (open(my $fh, '<', $tmp))
- {
- while (my $line = <$fh>)
- {
- chomp($line);
- if (($line =~ /$config_pattern/) &&
- (($2 eq 'y') || ($2 eq 'm')))
- {
- $flags |= $configs->{$1};
- }
- }
-
- close($fh);
- }
- }
- }
-
- return $flags;
-}
-
-sub pack_trailer
-{
- my ($atoms) = @_;
- my $trailer = pack('VV', 0, 0);
- for (my $i = $#$atoms; $i>=0; $i--)
- {
- my $atom = $atoms->[$i];
- $trailer .= pack('a*x!4Va4', $atom->[1], length($atom->[1]), $atom->[0]);
- }
- return $trailer;
-}
projects / buildroot.git / commitdiff