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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0090-scripts-Multi-platform-support-for-mkknlimg-and-knli.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0090-scripts-Multi-platform-support-for-mkknlimg-and-knli.patch247
1 files changed, 247 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0090-scripts-Multi-platform-support-for-mkknlimg-and-knli.patch b/target/linux/brcm2708/patches-4.4/0090-scripts-Multi-platform-support-for-mkknlimg-and-knli.patch
new file mode 100644
index 0000000000..12f1290d0d
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0090-scripts-Multi-platform-support-for-mkknlimg-and-knli.patch
@@ -0,0 +1,247 @@
+From 7740825fc5e8324d362566ecc61f95fbdc38370a Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 11 Nov 2015 11:38:59 +0000
+Subject: [PATCH 090/127] scripts: Multi-platform support for mkknlimg and
+ knlinfo
+
+The firmware uses tags in the kernel trailer to choose which dtb file
+to load. Current firmware loads bcm2835-*.dtb if the '283x' tag is true,
+otherwise it loads bcm270*.dtb. This scheme breaks if an image supports
+multiple platforms.
+
+This patch adds '270X' and '283X' tags to indicate support for RPi and
+upstream platforms, respectively. '283x' (note lower case 'x') is left
+for old firmware, and is only set if the image only supports upstream
+builds.
+---
+ scripts/knlinfo | 2 +
+ scripts/mkknlimg | 136 +++++++++++++++++++++++++++++++------------------------
+ 2 files changed, 80 insertions(+), 58 deletions(-)
+
+--- a/scripts/knlinfo
++++ b/scripts/knlinfo
+@@ -18,6 +18,8 @@ my %atom_formats =
+ (
+ 'DTOK' => \&format_bool,
+ 'KVer' => \&format_string,
++ '270X' => \&format_bool,
++ '283X' => \&format_bool,
+ '283x' => \&format_bool,
+ );
+
+--- a/scripts/mkknlimg
++++ b/scripts/mkknlimg
+@@ -13,12 +13,20 @@ use strict;
+ use warnings;
+ use integer;
+
++use constant FLAG_PI => 0x01;
++use constant FLAG_DTOK => 0x02;
++use constant FLAG_DDTK => 0x04;
++use constant FLAG_270X => 0x08;
++use constant FLAG_283X => 0x10;
++
+ my $trailer_magic = 'RPTL';
+
+ my $tmpfile1 = "/tmp/mkknlimg_$$.1";
+ my $tmpfile2 = "/tmp/mkknlimg_$$.2";
+
+ my $dtok = 0;
++my $ddtk = 0;
++my $is_270x = 0;
+ my $is_283x = 0;
+
+ while (@ARGV && ($ARGV[0] =~ /^-/))
+@@ -28,6 +36,14 @@ while (@ARGV && ($ARGV[0] =~ /^-/))
+ {
+ $dtok = 1;
+ }
++ elsif ($arg eq '--ddtk')
++ {
++ $ddtk = 1;
++ }
++ elsif ($arg eq '--270x')
++ {
++ $is_270x = 1;
++ }
+ elsif ($arg eq '--283x')
+ {
+ $is_283x = 1;
+@@ -50,30 +66,33 @@ if (! -r $kernel_file)
+ usage();
+ }
+
+-my @wanted_strings =
+-(
+- 'bcm2708_fb',
+- 'brcm,bcm2835-mmc',
+- 'brcm,bcm2835-sdhost',
+- 'brcm,bcm2708-pinctrl',
+- 'brcm,bcm2835-gpio',
+- 'brcm,bcm2835',
+- 'brcm,bcm2836'
+-);
++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,bcm2708' => FLAG_PI | FLAG_DTOK | FLAG_270X,
++ 'brcm,bcm2709' => FLAG_PI | FLAG_DTOK | FLAG_270X,
++ 'brcm,bcm2835' => FLAG_PI | FLAG_DTOK | FLAG_283X,
++ 'brcm,bcm2836' => 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('\002\041\114\030', 'xy', 'lz4 -d', 1,
+- $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;
+@@ -83,27 +102,21 @@ $append_trailer = $dtok;
+
+ if ($res)
+ {
+- $kver = $res->{''} || '?';
++ $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') ||
+- config_bool($res, 'brcm,bcm2835-mmc') ||
+- config_bool($res, 'brcm,bcm2835-sdhost'))
+- {
+- $dtok ||= config_bool($res, 'brcm,bcm2708-pinctrl');
+- $dtok ||= config_bool($res, 'brcm,bcm2835-gpio');
+- $is_283x ||= config_bool($res, 'brcm,bcm2835');
+- $is_283x ||= config_bool($res, 'brcm,bcm2836');
+- $dtok ||= $is_283x;
+- $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;
++ $is_270x ||= ($flags & FLAG_270X) != 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 (!$dtok)
+@@ -114,6 +127,8 @@ elsif (!$dtok)
+ if ($append_trailer)
+ {
+ printf("DT: %s\n", $dtok ? "y" : "n");
++ printf("DDT: %s\n", $ddtk ? "y" : "n") if ($ddtk);
++ printf("270x: %s\n", $is_270x ? "y" : "n");
+ printf("283x: %s\n", $is_283x ? "y" : "n");
+
+ my @atoms;
+@@ -121,7 +136,10 @@ if ($append_trailer)
+ push @atoms, [ $trailer_magic, pack('V', 0) ];
+ push @atoms, [ 'KVer', $kver ];
+ push @atoms, [ 'DTOK', pack('V', $dtok) ];
+- push @atoms, [ '283x', pack('V', $is_283x) ];
++ push @atoms, [ 'DDTK', pack('V', $ddtk) ] if ($ddtk);
++ push @atoms, [ '270X', pack('V', $is_270x) ];
++ push @atoms, [ '283X', pack('V', $is_283x) ];
++ push @atoms, [ '283x', pack('V', $is_283x && !$is_270x) ];
+
+ $trailer = pack_trailer(\@atoms);
+ $atoms[0]->[1] = pack('V', length($trailer));
+@@ -175,7 +193,7 @@ END {
+
+ sub usage
+ {
+- print ("Usage: mkknlimg [--dtok] [--283x] <vmlinux|zImage|bzImage> <outfile>\n");
++ print ("Usage: mkknlimg [--dtok] [--270x] [--283x] <vmlinux|zImage|bzImage> <outfile>\n");
+ exit(1);
+ }
+
+@@ -189,15 +207,8 @@ sub try_extract
+
+ 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 $res = { 'kver'=>$ver };
++ $res->{'flags'} = strings_to_flags($knl, $wanted_strings);
+
+ return $res;
+ }
+@@ -224,6 +235,22 @@ sub try_decompress
+ return undef;
+ }
+
++sub strings_to_flags
++{
++ my ($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 $flags;
++}
++
+ sub pack_trailer
+ {
+ my ($atoms) = @_;
+@@ -235,10 +262,3 @@ sub pack_trailer
+ }
+ return $trailer;
+ }
+-
+-sub config_bool
+-{
+- my ($configs, $wanted) = @_;
+- my $val = $configs->{$wanted} || 'n';
+- return (($val eq 'y') || ($val eq '1'));
+-}