1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* mkamsboot.h - a tool for merging bootloader code into an Sansa V2
* (AMS) firmware file
*
* Copyright (C) 2008 Dave Chapman
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef MKAMSBOOT_H
#define MKAMSBOOT_H
#include <stdint.h>
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Supported models */
enum {
MODEL_UNKNOWN = -1,
MODEL_FUZE = 0,
MODEL_CLIP,
MODEL_CLIPV2,
MODEL_E200V2,
MODEL_M200V4,
MODEL_C200V2,
MODEL_CLIPPLUS,
};
/* Holds info about the OF */
struct md5sums {
int model;
char *version;
char *md5;
};
extern const unsigned short hw_revisions[];
extern const unsigned short fw_revisions[];
extern const char* model_names[];
extern const int bootloader_sizes[];
/* load_rockbox_file()
*
* Loads a rockbox bootloader file into memory
*
* ARGUMENTS
*
* filename : bootloader file to load
* model : a 4 characters string representing the Sansa model
* ("fuze", "clip", "e2v2", "m2v4", or "c2v2")
* bootloader_size : set to the uncompressed bootloader size
* rb_packed_size : set to the size of compressed bootloader
* errstr : provided buffer to store an eventual error
* errstrsize : size of provided error buffer
*
* RETURN VALUE
* pointer to allocated memory containing the content of compressed bootloader
* or NULL in case of error (errstr will hold a description of the error)
*/
unsigned char* load_rockbox_file(
char* filename, int model, int* bootloader_size, int* rb_packedsize,
char* errstr, int errstrsize);
/* load_of_file()
*
* Loads a Sansa AMS Original Firmware file into memory
*
* ARGUMENTS
*
* filename : firmware file to load
* bufsize : set to firmware file size
* md5sum : set to file md5sum, must be at least 33 bytes long
* model : set to firmware model (MODEL_XXX)
* fw_version : set to firmware format version (1 or 2)
* firmware_size : set to firmware block's size
* of_packed : pointer to allocated memory containing the compressed
* original firmware block
* of_packedsize : size of compressed original firmware block
* errstr : provided buffer to store an eventual error
* errstrsize : size of provided error buffer
*
* RETURN VALUE
* pointer to allocated memory containing the content of Original Firmware
* or NULL in case of error (errstr will hold a description of the error)
*/
unsigned char* load_of_file(
char* filename, off_t* bufsize, struct md5sums *sum,
int* firmware_size, unsigned char** of_packed,
int* of_packedsize, char* errstr, int errstrsize);
/* patch_firmware()
*
* Patches a Sansa AMS Original Firmware file
*
* ARGUMENTS
*
* model : firmware model (MODEL_XXX)
* fw_version : firmware format version (1 or 2)
* firmware_size : size of uncompressed original firmware block
* buf : pointer to original firmware file
* len : size of original firmware file
* of_packed : pointer to compressed original firmware block
* of_packedsize : size of compressed original firmware block
* rb_packed : pointer to compressed rockbox bootloader
* rb_packed_size : size of compressed rockbox bootloader
*/
void patch_firmware(
int model, int fw_version, int firmware_size, unsigned char* buf,
int len, unsigned char* of_packed, int of_packedsize,
unsigned char* rb_packed, int rb_packedsize);
/* total_size()
*
* Calculates the size of the new firmware block
*
* ARGUMENTS
*
* model : firmware model (MODEL_XXX)
* rb_packed_size : size of compressed rockbox bootloader
* of_packedsize : size of compressed original firmware block
*
* RETURN VALUE
* Size of new firmware block
*/
int total_size(int model, int rb_packedsize, int of_packedsize);
/* firmware_revision()
*
* returns the firmware revision for a particular model
*
* ARGUMENTS
*
* model : firmware model (MODEL_XXX)
*
* RETURN VALUE
* firmware version
*/
int firmware_revision(int model);
#ifdef __cplusplus
};
#endif
#endif
|
