--- /dev/null
+#!/usr/bin/env perl
+#
+# Originaly from: https://github.com/raspberrypi/tools/blob/master/mkimage/mkknlimg
+# Original cset : 92a2df13b887f4799554bf92c4fc78d53668c868
+
+use strict;
+use integer;
+
+my $trailer_magic = 'RPTL';
+
+my $tmpfile1 = "/tmp/mkknlimg_$$.1";
+my $tmpfile2 = "/tmp/mkknlimg_$$.2";
+
+my $dtok = 0;
+
+while ($ARGV[0] =~ /^-/)
+{
+ my $arg = shift(@ARGV);
+ if ($arg eq '--dtok')
+ {
+ $dtok = 1;
+ }
+ else
+ {
+ print ("* Unknown option '$arg'\n");
+ usage();
+ }
+}
+
+usage() if (@ARGV != 2);
+
+my $kernel_file = $ARGV[0];
+my $out_file = $ARGV[1];
+
+my @wanted_config_lines =
+(
+ 'CONFIG_BCM2708_DT'
+);
+
+my @wanted_strings =
+(
+ 'bcm2708_fb',
+ 'brcm,bcm2708-pinctrl',
+ 'brcm,bcm2835-gpio',
+ 'of_find_property'
+);
+
+my $res = try_extract($kernel_file, $tmpfile1);
+
+$res = try_decompress('\037\213\010', 'xy', 'gunzip', 0,
+ $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
+$res = try_decompress('\3757zXZ\000', 'abcde', 'unxz --single-stream', -1,
+ $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
+$res = try_decompress('BZh', 'xy', 'bunzip2', 0,
+ $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
+$res = try_decompress('\135\0\0\0', 'xxx', 'unlzma', 0,
+ $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
+$res = try_decompress('\211\114\132', 'xy', 'lzop -d', 0,
+ $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
+
+my $append_trailer;
+my $trailer;
+
+if ($res)
+{
+ print("Version: $res->{''}\n");
+
+ $append_trailer = $dtok;
+ if (!$dtok)
+ {
+ if (config_bool($res, 'bcm2708_fb'))
+ {
+ $dtok ||= config_bool($res, 'CONFIG_BCM2708_DT');
+ $dtok ||= config_bool($res, 'brcm,bcm2708-pinctrl');
+ $dtok ||= config_bool($res, 'brcm,bcm2835-gpio');
+ $append_trailer = 1;
+ }
+ else
+ {
+ print ("* This doesn't look like a Raspberry Pi kernel. In pass-through mode.\n");
+ }
+ }
+}
+else
+{
+ print ("* Is this a valid kernel? In pass-through mode.\n");
+}
+
+if ($append_trailer)
+{
+ printf("DT: %s\n", $dtok ? "y" : "n");
+
+ my @atoms;
+
+ push @atoms, [ $trailer_magic, pack('V', 0) ];
+ push @atoms, [ 'KVer', $res->{''} ];
+ push @atoms, [ 'DTOK', pack('V', $dtok) ];
+
+ $trailer = pack_trailer(\@atoms);
+ $atoms[0]->[1] = pack('V', length($trailer));
+
+ $trailer = pack_trailer(\@atoms);
+}
+
+die "* Failed to open '$kernel_file'\n" if (!open(my $ifh, '<', $kernel_file));
+die "* Failed to create '$out_file'\n" if (!open(my $ofh, '>', $out_file));
+
+my $copybuf;
+my $total_len = 0;
+while (1)
+{
+ my $bytes = sysread($ifh, $copybuf, 64*1024);
+ last if (!$bytes);
+ syswrite($ofh, $copybuf, $bytes);
+ $total_len += $bytes;
+}
+
+if ($trailer)
+{
+ # Pad to word-alignment
+ syswrite($ofh, "\x000\x000\x000", (-$total_len & 0x3));
+ syswrite($ofh, $trailer);
+}
+
+close($ifh);
+close($ofh);
+
+exit($trailer ? 0 : 1);
+
+END {
+ unlink($tmpfile1) if ($tmpfile1);
+ unlink($tmpfile2) if ($tmpfile2);
+}
+
+
+sub usage
+{
+ print ("Usage: mkknlimg [--dtok] <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 $res = { ''=>$ver };
+ my $string_pattern = '^('.join('|', @wanted_strings).')$';
+
+ my @matches = `strings \"$knl\" | grep -E \"$string_pattern\"`;
+ foreach my $match (@matches)
+ {
+ chomp($match);
+ $res->{$match} = 1;
+ }
+
+ my $config_pattern = '^('.join('|', @wanted_config_lines).')=(.*)$';
+ my $cf1 = 'IKCFG_ST\037\213\010';
+ my $cf2 = '0123456789';
+
+ 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);
+ $res->{$1} = $2 if ($line =~ /$config_pattern/);
+ }
+
+ close($fh);
+ }
+ }
+ }
+
+ 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];
+ $pos =~ s/:.*[\r\n]*$//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, $tmp1);
+ }
+
+ return undef;
+}
+
+sub pack_trailer
+{
+ my ($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 $trailer;
+}
+
+sub config_bool
+{
+ my ($configs, $wanted) = @_;
+ return (($configs->{$wanted} eq 'y') || ($configs->{$wanted} eq '1'));
+}
Code Review / packages / trusty / cirros-testvm.git / blobdiff