#!/usr/bin/env perl
#
# Originaly from: https://github.com/raspberrypi/tools/blob/master/mkimage/mkknlimg
-# Original cset : 92a2df13b887f4799554bf92c4fc78d53668c868
+# 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[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");
my $kernel_file = $ARGV[0];
my $out_file = $ARGV[1];
-my @wanted_config_lines =
-(
- 'CONFIG_BCM2708_DT'
-);
+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',
- 'brcm,bcm2708-pinctrl',
- 'brcm,bcm2835-gpio',
- 'of_find_property'
-);
+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, $tmpfile2) if (!$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);
+$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)
{
- print("Version: $res->{''}\n");
+ $kver = $res->{'kver'} || '?';
+ my $flags = $res->{'flags'};
+ print("Version: $kver\n");
- $append_trailer = $dtok;
- if (!$dtok)
+ if ($flags & FLAG_PI)
{
- if (config_bool($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");
- }
+ $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");
}
}
-else
+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', $res->{''} ];
+ 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));
$trailer = pack_trailer(\@atoms);
}
-die "* Failed to open '$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 $ofh;
my $total_len = 0;
-while (1)
+
+if ($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 ($trailer)
syswrite($ofh, $trailer);
}
-close($ifh);
close($ofh);
exit($trailer ? 0 : 1);
sub usage
{
- print ("Usage: mkknlimg [--dtok] <vmlinux|zImage|bzImage> <outfile>\n");
+ print ("Usage: mkknlimg [--dtok] [--283x] <vmlinux|zImage|bzImage> <outfile>\n");
exit(1);
}
chomp($ver);
- my $res = { ''=>$ver };
- my $string_pattern = '^('.join('|', @wanted_strings).')$';
+ 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);
- $res->{$match} = 1;
+ $flags |= $strings->{$match};
}
- my $config_pattern = '^('.join('|', @wanted_config_lines).')=(.*)$';
+ 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)
while (my $line = <$fh>)
{
chomp($line);
- $res->{$1} = $2 if ($line =~ /$config_pattern/);
+ if (($line =~ /$config_pattern/) &&
+ (($2 eq 'y') || ($2 eq 'm')))
+ {
+ $flags |= $configs->{$1};
+ }
}
close($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;
+ return $flags;
}
sub pack_trailer
}
return $trailer;
}
-
-sub config_bool
-{
- my ($configs, $wanted) = @_;
- return (($configs->{$wanted} eq 'y') || ($configs->{$wanted} eq '1'));
-}
projects / buildroot.git / commitdiff