generate images for old CFE based boards like the Davolink DV201

SVN-Revision: 14264

1 files changed, 162 insertions, 0 deletions

diff --git a/scripts/brcmImage.pl b/scripts/brcmImage.pl
new file mode 100644
index 0000000..9a3acb4
--- /dev/null
+++ b/scripts/brcmImage.pl
@@ -0,0 +1,162 @@
+#!/usr/bin/perl
+#
+#    Copyright (C) 2009	Henk Vergonet <Henk.Vergonet@gmail.com>
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, write to the Free Software
+#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+
+# Description:
+#   Replacement for brcmImagebuilder
+#
+# Disclaimer:
+#   Use this software at your own risk.
+#
+# Changelog:
+#   2009-01-01	Henk.Vergonet at gmail.com
+#
+use strict;
+use Getopt::Std;
+use Compress::Zlib;
+
+my $version = "0.1";
+my %arg = (
+	o => 'bcm963xx_fs_kernel',
+	b => 'OpenWrt',
+	c => '6348',
+	s => 64,
+	f => 0xbfc00000,
+	x => 0x00010000,
+	a => 0x80010000,
+	e => 0x80010000,
+	i => 2,
+);
+my $prog = $0;
+$prog =~ s/^.*\///;
+getopts("r:k:o:lc:b:s:f:i:a:e:tpvh", \%arg);
+
+die "usage: $prog ~opts~
+
+  -r <file>	: input rootfs file
+  -k <file>	: input kernel file
+  -o <file>	: output image file, default $arg{o}
+  -l		: littleendian system, default ".($arg{l} ? 'yes' : 'no')."
+  -c <chipid>	: default $arg{c} 
+  -b <boardid>	: default $arg{b} 
+  -s <size_kb>	: erase sise flash, default $arg{s} 
+  -f <baseaddr>	: flash base, default ".sprintf('0x%x', $arg{f})."
+  -x <cfelen>	: length of cfe, default ".sprintf('0x%x', $arg{x})."
+  -i		: 2=dual image, default $arg{i}
+
+  -a <loadaddr>	: Kernel load address, default ".sprintf('0x%x', $arg{a})."
+  -e <entryaddr>: Kernel entry address, default ".sprintf('0x%x', $arg{e})."
+  -t		: Prefix kernel with load,entry,size
+
+  -p		: Add a 'gOtO' partition 
+
+  -v		: be more verbose
+  -h		: help, version $version
+
+EXAMPLES:
+    $prog -k kern -r rootfs
+" if $arg{h} || !$arg{k} || !$arg{r};
+
+sub Read_Image
+{
+	open my $fh, $_[0] or die "open $_[0]: $!";
+	local $/;	# Set input to "slurp" mode.
+	my $buf = <$fh>;
+	close $fh;
+	return $buf;
+}
+
+sub Padlen
+{
+	my $p = $_[0] % $_[1];
+	return ($p ? $_[1] - $p : 0);
+}
+
+sub Pad
+{
+	my ($buf, $off, $bs) = @_[0..2];
+	$buf .= chr(255) x Padlen(length($buf) + $off, $bs);
+	return $buf;
+}
+
+sub bcmImage
+{
+	my ($k, $f) = @_[0..1];
+	my $tmp = $arg{x} + 0x100 + $arg{f};
+	
+	# regular: rootfs+kernel
+	my ($img, $fa, $ka) = ( $f.$k, $tmp, $tmp + length($f) );
+
+	# test: kernel+rootfs
+#	my ($img, $fa, $ka) = ( $k.$f, $tmp + length($k), $tmp );
+
+	$fa = 0 unless length($f);
+
+	my $hdr = pack("a4a20a14a6a16a2a10a12a10a12a10a12a10a2a2a74Na16",
+		'6',
+		'LinuxInside', 
+		'ver. 2.0', 
+		$arg{c},
+		$arg{b},
+		($arg{l} ? '0' : '1'),
+		length($img),
+		'0',
+		'0',
+		$fa,
+		length($f),
+		$ka,
+		length($k),
+		($arg{i}==2 ? '1' : '0'),
+		'',		# if 1, the image is INACTIVE; if 0, active
+		'',
+		~crc32($k, crc32($f)),
+		'');
+	$hdr .= pack('Na16', ~crc32($hdr), '');
+
+	printf "kernel at 0x%x length 0x%x(%u)\n", $ka, length($k), length($k)
+		if $arg{v};
+	printf "rootfs at 0x%x length 0x%x(%u)\n", $fa, length($f), length($f)
+		if $arg{v};
+
+	open(FO, ">$arg{o}");
+	print FO $hdr;
+	print FO $img;
+	close FO;
+}
+
+# MAIN
+
+my $kern = Read_Image $arg{k};
+my $root = Read_Image $arg{r};
+
+$kern = pack('NNN', $arg{a}, $arg{e}, length($kern)).$kern if $arg{t};
+
+# specific fixup for the CFE that expects rootfs-kernel order
+if ($arg{p}) {
+	$kern = Pad($kern, 0x10c, $arg{s} * 1024);
+	my $dummy_root = pack('a4NN',
+			'gOtO',
+			length($kern)+12,
+			length($root)+Padlen(length($root), $arg{s} * 1024)
+	);
+	$kern .= $root;
+	$root = $dummy_root;
+}
+
+bcmImage($kern, $root);
+