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248 lines
7.1 KiB
Diff
248 lines
7.1 KiB
Diff
From 8a51551a8e90b0af9ca4d1519e4ab3c4e3f0e672 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 11 Nov 2015 11:38:59 +0000
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Subject: [PATCH 089/304] scripts: Multi-platform support for mkknlimg and
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knlinfo
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The firmware uses tags in the kernel trailer to choose which dtb file
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to load. Current firmware loads bcm2835-*.dtb if the '283x' tag is true,
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otherwise it loads bcm270*.dtb. This scheme breaks if an image supports
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multiple platforms.
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This patch adds '270X' and '283X' tags to indicate support for RPi and
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upstream platforms, respectively. '283x' (note lower case 'x') is left
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for old firmware, and is only set if the image only supports upstream
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builds.
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---
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scripts/knlinfo | 2 +
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scripts/mkknlimg | 136 +++++++++++++++++++++++++++++++------------------------
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2 files changed, 80 insertions(+), 58 deletions(-)
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--- a/scripts/knlinfo
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+++ b/scripts/knlinfo
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@@ -18,6 +18,8 @@ my %atom_formats =
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(
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'DTOK' => \&format_bool,
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'KVer' => \&format_string,
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+ '270X' => \&format_bool,
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+ '283X' => \&format_bool,
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'283x' => \&format_bool,
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);
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--- a/scripts/mkknlimg
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+++ b/scripts/mkknlimg
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@@ -13,12 +13,20 @@ use strict;
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use warnings;
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use integer;
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+use constant FLAG_PI => 0x01;
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+use constant FLAG_DTOK => 0x02;
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+use constant FLAG_DDTK => 0x04;
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+use constant FLAG_270X => 0x08;
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+use constant FLAG_283X => 0x10;
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+
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my $trailer_magic = 'RPTL';
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my $tmpfile1 = "/tmp/mkknlimg_$$.1";
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my $tmpfile2 = "/tmp/mkknlimg_$$.2";
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my $dtok = 0;
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+my $ddtk = 0;
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+my $is_270x = 0;
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my $is_283x = 0;
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while (@ARGV && ($ARGV[0] =~ /^-/))
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@@ -28,6 +36,14 @@ while (@ARGV && ($ARGV[0] =~ /^-/))
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{
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$dtok = 1;
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}
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+ elsif ($arg eq '--ddtk')
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+ {
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+ $ddtk = 1;
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+ }
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+ elsif ($arg eq '--270x')
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+ {
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+ $is_270x = 1;
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+ }
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elsif ($arg eq '--283x')
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{
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$is_283x = 1;
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@@ -50,30 +66,33 @@ if (! -r $kernel_file)
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usage();
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}
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-my @wanted_strings =
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-(
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- 'bcm2708_fb',
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- 'brcm,bcm2835-mmc',
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- 'brcm,bcm2835-sdhost',
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- 'brcm,bcm2708-pinctrl',
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- 'brcm,bcm2835-gpio',
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- 'brcm,bcm2835',
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- 'brcm,bcm2836'
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-);
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+my $wanted_strings =
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+{
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+ 'bcm2708_fb' => FLAG_PI,
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+ 'brcm,bcm2835-mmc' => FLAG_PI,
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+ 'brcm,bcm2835-sdhost' => FLAG_PI,
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+ 'brcm,bcm2708-pinctrl' => FLAG_PI | FLAG_DTOK,
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+ 'brcm,bcm2835-gpio' => FLAG_PI | FLAG_DTOK,
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+ 'brcm,bcm2708' => FLAG_PI | FLAG_DTOK | FLAG_270X,
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+ 'brcm,bcm2709' => FLAG_PI | FLAG_DTOK | FLAG_270X,
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+ 'brcm,bcm2835' => FLAG_PI | FLAG_DTOK | FLAG_283X,
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+ 'brcm,bcm2836' => FLAG_PI | FLAG_DTOK | FLAG_283X,
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+ 'of_overlay_apply' => FLAG_DTOK | FLAG_DDTK,
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+};
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my $res = try_extract($kernel_file, $tmpfile1);
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-$res = try_decompress('\037\213\010', 'xy', 'gunzip', 0,
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- $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
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-$res = try_decompress('\3757zXZ\000', 'abcde', 'unxz --single-stream', -1,
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- $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
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-$res = try_decompress('BZh', 'xy', 'bunzip2', 0,
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- $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
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-$res = try_decompress('\135\0\0\0', 'xxx', 'unlzma', 0,
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- $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
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-$res = try_decompress('\211\114\132', 'xy', 'lzop -d', 0,
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- $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
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-$res = try_decompress('\002\041\114\030', 'xy', 'lz4 -d', 1,
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- $kernel_file, $tmpfile1, $tmpfile2) if (!$res);
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+$res ||= try_decompress('\037\213\010', 'xy', 'gunzip', 0,
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+ $kernel_file, $tmpfile1, $tmpfile2);
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+$res ||= try_decompress('\3757zXZ\000', 'abcde', 'unxz --single-stream', -1,
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+ $kernel_file, $tmpfile1, $tmpfile2);
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+$res ||= try_decompress('BZh', 'xy', 'bunzip2', 0,
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+ $kernel_file, $tmpfile1, $tmpfile2);
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+$res ||= try_decompress('\135\0\0\0', 'xxx', 'unlzma', 0,
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+ $kernel_file, $tmpfile1, $tmpfile2);
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+$res ||= try_decompress('\211\114\132', 'xy', 'lzop -d', 0,
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+ $kernel_file, $tmpfile1, $tmpfile2);
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+$res ||= try_decompress('\002\041\114\030', 'xy', 'lz4 -d', 1,
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+ $kernel_file, $tmpfile1, $tmpfile2);
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my $append_trailer;
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my $trailer;
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@@ -83,27 +102,21 @@ $append_trailer = $dtok;
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if ($res)
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{
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- $kver = $res->{''} || '?';
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+ $kver = $res->{'kver'} || '?';
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+ my $flags = $res->{'flags'};
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print("Version: $kver\n");
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- $append_trailer = $dtok;
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- if (!$dtok)
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+ if ($flags & FLAG_PI)
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{
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- if (config_bool($res, 'bcm2708_fb') ||
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- config_bool($res, 'brcm,bcm2835-mmc') ||
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- config_bool($res, 'brcm,bcm2835-sdhost'))
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- {
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- $dtok ||= config_bool($res, 'brcm,bcm2708-pinctrl');
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- $dtok ||= config_bool($res, 'brcm,bcm2835-gpio');
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- $is_283x ||= config_bool($res, 'brcm,bcm2835');
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- $is_283x ||= config_bool($res, 'brcm,bcm2836');
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- $dtok ||= $is_283x;
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- $append_trailer = 1;
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- }
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- else
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- {
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- print ("* This doesn't look like a Raspberry Pi kernel. In pass-through mode.\n");
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- }
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+ $append_trailer = 1;
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+ $dtok ||= ($flags & FLAG_DTOK) != 0;
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+ $is_270x ||= ($flags & FLAG_270X) != 0;
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+ $is_283x ||= ($flags & FLAG_283X) != 0;
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+ $ddtk ||= ($flags & FLAG_DDTK) != 0;
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+ }
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+ else
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+ {
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+ print ("* This doesn't look like a Raspberry Pi kernel. In pass-through mode.\n");
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}
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}
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elsif (!$dtok)
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@@ -114,6 +127,8 @@ elsif (!$dtok)
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if ($append_trailer)
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{
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printf("DT: %s\n", $dtok ? "y" : "n");
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+ printf("DDT: %s\n", $ddtk ? "y" : "n") if ($ddtk);
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+ printf("270x: %s\n", $is_270x ? "y" : "n");
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printf("283x: %s\n", $is_283x ? "y" : "n");
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my @atoms;
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@@ -121,7 +136,10 @@ if ($append_trailer)
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push @atoms, [ $trailer_magic, pack('V', 0) ];
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push @atoms, [ 'KVer', $kver ];
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push @atoms, [ 'DTOK', pack('V', $dtok) ];
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- push @atoms, [ '283x', pack('V', $is_283x) ];
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+ push @atoms, [ 'DDTK', pack('V', $ddtk) ] if ($ddtk);
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+ push @atoms, [ '270X', pack('V', $is_270x) ];
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+ push @atoms, [ '283X', pack('V', $is_283x) ];
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+ push @atoms, [ '283x', pack('V', $is_283x && !$is_270x) ];
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$trailer = pack_trailer(\@atoms);
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$atoms[0]->[1] = pack('V', length($trailer));
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@@ -175,7 +193,7 @@ END {
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sub usage
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{
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- print ("Usage: mkknlimg [--dtok] [--283x] <vmlinux|zImage|bzImage> <outfile>\n");
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+ print ("Usage: mkknlimg [--dtok] [--270x] [--283x] <vmlinux|zImage|bzImage> <outfile>\n");
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exit(1);
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}
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@@ -189,15 +207,8 @@ sub try_extract
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chomp($ver);
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- my $res = { ''=>$ver };
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- my $string_pattern = '^('.join('|', @wanted_strings).')$';
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-
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- my @matches = `strings \"$knl\" | grep -E \"$string_pattern\"`;
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- foreach my $match (@matches)
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- {
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- chomp($match);
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- $res->{$match} = 1;
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- }
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+ my $res = { 'kver'=>$ver };
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+ $res->{'flags'} = strings_to_flags($knl, $wanted_strings);
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return $res;
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}
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@@ -224,6 +235,22 @@ sub try_decompress
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return undef;
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}
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+sub strings_to_flags
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+{
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+ my ($knl, $strings) = @_;
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+ my $string_pattern = '^('.join('|', keys(%$strings)).')$';
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+ my $flags = 0;
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+
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+ my @matches = `strings \"$knl\" | grep -E \"$string_pattern\"`;
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+ foreach my $match (@matches)
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+ {
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+ chomp($match);
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+ $flags |= $strings->{$match};
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+ }
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+
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+ return $flags;
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+}
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+
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sub pack_trailer
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{
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my ($atoms) = @_;
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@@ -235,10 +262,3 @@ sub pack_trailer
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}
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return $trailer;
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}
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-
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-sub config_bool
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-{
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- my ($configs, $wanted) = @_;
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- my $val = $configs->{$wanted} || 'n';
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- return (($val eq 'y') || ($val eq '1'));
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-}
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