up_deviceimage.c

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

/****************************************************************************
 * up_deviceimage.c
 *
 *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <[e-mail]>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the name Gregory Nutt 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.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#ifdef VFAT_STANDALONE
# include <stdio.h>
# include <stdlib.h>
# include <zlib.h>
#else
# include <nuttx/config.h>
# include <sys/types.h>
# include <stdlib.h>
# include <debug.h>
# include <zlib.h>
# include "up_internal.h"
#endif

/****************************************************************************
 * Private Definitions
 ****************************************************************************/

#ifdef VFAT_STANDALONE
# define sdbg(format, arg...) printf(format, ##arg)
#endif

/****************************************************************************
 * Private Types
 ****************************************************************************/

/****************************************************************************
 * Private Function Prototypes
 ****************************************************************************/

/****************************************************************************
 * Private Data
 ****************************************************************************/

/* This array holds a compressed VFAT file system created with:
 *
 *   /sbin/mkdosfs -C -F 32 -I -n "NuttXTestVol" -S 512 -v nuttx-test.vfat 1024
 *   sudo mkdir /mnt/loop
 *   sudo mount -o loop nuttx-test.vfat /mnt/loop
 *   mkdir /mnt/loop/TestDir
 *   echo "This is a test" >/mnt/loop/TestDir/TestFile.txt
 *   sudo umount /mnt/loop
 *   gzip nuttx-test.vfat
 *   xxd -g 1 nuttx-test.vfat.gz >some-file
 *
 * Then manually massaged from the gzip xxd output to zlib format.  See
 * http://www.faqs.org/rfcs/rfc1952.html.  This amounts to:
 *
 *   Remove all of the leading bytes through the null terminator of the file name
 *   Remove the last 8 bytes
 *   Add 0x08, 0x1d to the beginning.
 */

static const unsigned char g_vfatdata[] =
{
    0x08, 0x1d, 0xed, 0xdd, 0xcf, 0x6a, 0x13, 0x41, 0x18, 0x00, 0xf0, 0xa9, 0x16, 0x5b, 0x2a, 0x6d,
    0x73, 0x12, 0x3c, 0x39, 0x78, 0xf3, 0xb2, 0x87, 0x0a, 0x3d, 0x78, 0x32, 0xd0, 0x06, 0x0a, 0xa2,
    0xa5, 0xa6, 0xa5, 0x17, 0x95, 0x2d, 0xd9, 0x6a, 0x68, 0x4c, 0xda, 0xec, 0x8a, 0x2d, 0x78, 0xf3,
    0x01, 0xf4, 0x39, 0x8a, 0xb7, 0x7a, 0x13, 0xc5, 0x17, 0xe8, 0x5b, 0x78, 0xcb, 0xc5, 0x63, 0x4f,
    0xc6, 0x8d, 0x69, 0x8b, 0x45, 0xc4, 0x3f, 0x20, 0x51, 0xfc, 0xfd, 0xd8, 0xe1, 0xdb, 0xd9, 0x8f,
    0x81, 0x59, 0xe6, 0x63, 0x59, 0xd8, 0x85, 0xe9, 0xad, 0xbf, 0x7c, 0xbc, 0xd5, 0xe8, 0xe4, 0x9b,
    0x79, 0x08, 0xe7, 0xc6, 0x62, 0x38, 0x17, 0x42, 0x98, 0x3c, 0x0a, 0x21, 0x86, 0x9b, 0xe1, 0x44,
    0xe5, 0x38, 0x0e, 0x72, 0x63, 0xe1, 0x42, 0x38, 0xeb, 0xda, 0xf2, 0xbd, 0x3b, 0xb5, 0xdb, 0x4f,
    0x8a, 0x62, 0xbd, 0x9e, 0xe5, 0xc5, 0x5a, 0xa7, 0x56, 0xad, 0x5f, 0x9f, 0x8b, 0x31, 0xce, 0x5c,
    0x79, 0xf7, 0xf4, 0xd9, 0xab, 0xab, 0xef, 0x8b, 0x8b, 0x6b, 0xaf, 0x67, 0xde, 0x4c, 0x84, 0xc3,
    0xca, 0xfd, 0xde, 0xc7, 0xb9, 0x0f, 0x87, 0x97, 0x0e, 0x2f, 0xf7, 0x3e, 0xd5, 0x1f, 0x35, 0xf3,
    0x58, 0x1e, 0xed, 0x4e, 0x11, 0xd3, 0xb8, 0xd1, 0xe9, 0x14, 0xe9, 0x46, 0x2b, 0x8b, 0x8d, 0x66,
    0xbe, 0x95, 0xc4, 0xb8, 0xdc, 0xca, 0xd2, 0x3c, 0x8b, 0xcd, 0x76, 0x9e, 0x75, 0xcf, 0xe4, 0x37,
    0x5b, 0x9d, 0xed, 0xed, 0xbd, 0x98, 0xb6, 0x1b, 0xd3, 0x53, 0xdb, 0xdd, 0x2c, 0xcf, 0xcb, 0xd3,
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    0x83, 0xf9, 0x83, 0xf9, 0x61, 0x1c, 0xe6, 0xab, 0xf5, 0x90, 0x85, 0x3c, 0x14, 0x61, 0x21, 0xcc,
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