packages: clean up the package folder
[openwrt.org/openwrt.git] / package / system / mtd / src / seama.h
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/* vi: set sw=4 ts=4: */
/*
 *      (SEA)ttle i(MA)ge is the image which used in project seattle.
 *
 *      Created by David Hsieh <david_hsieh@alphanetworks.com>
 *      Copyright (C) 2008-2009 Alpha Networks, Inc.
 *
 *      This file is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU Lesser General Public
 *      License as published by the Free Software Foundation; either'
 *      version 2.1 of the License, or (at your option) any later version.
 *
 *      The GNU C Library 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
 *      Lesser General Public License for more details.
 *
 *      You should have received a copy of the GNU Lesser General Public
 *      License along with the GNU C Library; if not, write to the Free
 *      Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 *      02111-1307 USA.
 */
 
#ifndef __SEAMA_HEADER_FILE__
#define __SEAMA_HEADER_FILE__
 
#include <stdint.h>
 
#define SEAMA_MAGIC             0x5EA3A417
 
/*
 *      SEAMA looks like the following map.
 *      All the data of the header should be in network byte order.
 *
 *  +-------------+-------------+------------
 *      | SEAMA magic               |     ^
 *  +-------------+-------------+     |
 *      | reserved    | meta size   |     |
 *  +-------------+-------------+   header
 *      | image size (0 bytes)      |     |
 *  +-------------+-------------+     |
 *      ~ Meta data                 ~     v
 *  +-------------+-------------+------------
 *      | SEAMA magic               |   ^     ^
 *  +-------------+-------------+   |     |
 *      | reserved    | meta size   |   |     |
 *  +-------------+-------------+   |     |
 *      | image size                |   |     |
 *  +-------------+-------------+ header  |
 *      |                           |   |     |
 *      | 16 bytes of MD5 digest    |   |     |
 *      |                           |   |     |
 *      |                           |   |     |
 *  +-------------+-------------+   |     |
 *      ~ Meta data                 ~   v     |
 *  +-------------+-------------+-------  |
 *      |                           |         |
 *      | Image of the 1st entity   |         |
 *      ~                           ~ 1st entity
 *      |                           |         |
 *      |                           |         v
 *  +-------------+-------------+-------------
 *      | SEAMA magic               |   ^     ^
 *  +-------------+-------------+   |     |
 *      | reserved    | meta size   |   |     |
 *  +-------------+-------------+   |     |
 *      | image size                |   |     |
 *  +-------------+-------------+ header  |
 *      |                           |   |     |
 *      | 16 bytes of MD5 digest    |   |     |
 *      |                           |   |     |
 *      |                           |   |     |
 *  +-------------+-------------+   |     |
 *      ~ Meta data                 ~   v     |
 *  +-------------+-------------+-------  |
 *      |                           |         |
 *      | Image of the 2nd entity   |         |
 *      ~                           ~ 2nd entity
 *      |                           |         |
 *      |                           |         v
 *  +-------------+-------------+-------------
 */
 
 
/*
 *      SEAMA header
 *
 *      |<-------- 32 bits -------->|
 *  +-------------+-------------+
 *      | SEAMA magic               |
 *  +-------------+-------------+
 *      | reserved    | meta size   |
 *  +-------------+-------------+
 *      | image size                |
 *  +-------------+-------------+
 */
/* seama header */
typedef struct seama_hdr        seamahdr_t;
struct seama_hdr
{
        uint32_t        magic;                  /* should always be SEAMA_MAGIC. */
        uint16_t        reserved;               /* reserved for  */
        uint16_t        metasize;               /* size of the META data */
        uint32_t        size;                   /* size of the image */
} __attribute__ ((packed));
 
 
#endif
 
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