slugimage.pl

#!/usr/bin/env perl
# 
# SlugImage : Manipulate NSLU2 firmware images
#             Dwayne Fontenot (jacques)
#             Rod Whitby (rwhitby)
#	      www.nslu2-linux.org
#
# Copyright (c) 2004, 2006, Dwayne Fontenot & Rod Whitby
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 
# Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# Neither the name of the NSLU2-Linux Development Team nor the names
# of its contributors may be used to endorse or promote products
# derived from this software without specific prior written
# permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

use strict;
use warnings;

use Getopt::Long qw(:config no_ignore_case);
use POSIX qw(tmpnam);

my($debug) = 0;
my($quiet) = 0;
my($flash_start)    = 0x50000000;
my($flash_len)      = 0x00800000;
my($block_size)     = 0x00020000;
my($kernel_offset)  = 0x00060000;
my($kernel_size)    = 0x00100000;
my($ramdisk_offset) = 0x00160000;
my(@cleanup);

# The last 70 bytes of the SercommRedBootTrailer (i.e. excluding MAC
# address).  Needed to create an image with an empty RedBoot partition
# since the Sercomm upgrade tool checks for this trailer.
# http://www.nslu2-linux.org/wiki/Info/SercommRedBootTrailer
my @sercomm_redboot_trailer = (0x4573, 0x4372, 0x4d6f, 0x006d, 0x0001,
       0x0400, 0x3170, 0x5895, 0x0010, 0x0000, 0x0000, 0x0000, 0x0000,
       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
       0x0000, 0x0000, 0x0001, 0x0000, 0x0000, 0x0000, 0x0003, 0x2300,
       0x0063, 0x0000, 0x7320, 0x7245, 0x6f43, 0x6d4d);

# There's a 16 byte Sercomm trailer at the end of the flash. It is used
# by RedBoot to detect a Sercomm flash layout and to configure the
# Sercomm upgrade system.
# http://www.nslu2-linux.org/wiki/Info/SercommFlashTrailer
my @sercomm_flash_trailer = (0x0100, 0x0000, 0x6323, 0xf790, 0x5265,
                             0x4f63, 0x4d6d, 0xb400);