57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2009 by Karl Kurbjun
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* $Id$
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdlib.h>
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extern int decrypt_array[];
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extern int encrypt_array[];
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/* Notes about the header:
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* The magic_name should always be "OIMCFWUP"
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* Header length is always 18 bytes
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* The flags have the following mask:
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* CHECK_CRC 0x01 : Tells the firmware whether or not to check CRC
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* ENDIAN_MODE 0x02 : Tells the OF whether to re-order the bytes
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* The rest are unknown
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* The image length is in bytes and is always 0x007F0000
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*/
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struct olympus_header {
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int8_t magic_name[8];
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uint32_t unknown;
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uint16_t header_length;
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uint16_t flags;
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uint32_t unknown_zeros;
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uint32_t image_length;
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} __attribute__((__packed__));
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/* Patch entries should be saved in little endian format */
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struct patch_single {
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off_t offset;
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uint32_t value;
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};
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int mr500_patch_file(char *, struct patch_single *, int);
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int mr500_save_header(char *, struct olympus_header *);
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int mr500_read_header(char *, struct olympus_header *);
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int mr500_save_crc(char *, off_t, uint32_t *);
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int mr500_read_crc(char *, off_t, uint32_t *);
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int mr500_calculate_crc(char *, off_t, unsigned int, uint32_t *);
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int mr500_save_data(char *, char *, off_t, unsigned int, int*);
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int mr500_init(void);
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