diff options
Diffstat (limited to 'flash/extract/extract.c')
-rw-r--r-- | flash/extract/extract.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/flash/extract/extract.c b/flash/extract/extract.c deleted file mode 100644 index 2389f9290e..0000000000 --- a/flash/extract/extract.c +++ /dev/null | |||
@@ -1,147 +0,0 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2003 by Jörg Hohensohn | ||
11 | * | ||
12 | * Tool to extract the scrambled image out of an Archos flash ROM dump | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | #include <stdio.h> | ||
25 | #include <stdlib.h> | ||
26 | #include <inttypes.h> | ||
27 | |||
28 | #define UINT8 unsigned char | ||
29 | #define UINT16 unsigned short | ||
30 | #define UINT32 unsigned long | ||
31 | |||
32 | #define IMAGE_HEADER 0x6000 // a 32 byte header in front of the software image | ||
33 | #define IMAGE_START 0x6020 // software image position in Flash | ||
34 | |||
35 | |||
36 | // place a 32 bit value into memory, big endian | ||
37 | void Write32(UINT8* pByte, UINT32 value) | ||
38 | { | ||
39 | pByte[0] = (UINT8)(value >> 24); | ||
40 | pByte[1] = (UINT8)(value >> 16); | ||
41 | pByte[2] = (UINT8)(value >> 8); | ||
42 | pByte[3] = (UINT8)(value); | ||
43 | } | ||
44 | |||
45 | |||
46 | // read a 32 bit value from memory, big endian | ||
47 | UINT32 Read32(UINT8* pByte) | ||
48 | { | ||
49 | UINT32 value = 0; | ||
50 | |||
51 | value |= (UINT32)pByte[0] << 24; | ||
52 | value |= (UINT32)pByte[1] << 16; | ||
53 | value |= (UINT32)pByte[2] << 8; | ||
54 | value |= (UINT32)pByte[3]; | ||
55 | |||
56 | return value; | ||
57 | } | ||
58 | |||
59 | |||
60 | // entry point | ||
61 | int main(int argc, char* argv[]) | ||
62 | { | ||
63 | FILE* pInFile; | ||
64 | FILE* pOutFile; | ||
65 | UINT8 aHeader[6]; | ||
66 | UINT8 aImage[256*1024]; | ||
67 | UINT32 i; | ||
68 | UINT32 uiSize, uiStart; | ||
69 | UINT16 usChecksum = 0; | ||
70 | |||
71 | if (argc < 2) | ||
72 | { | ||
73 | printf("Extract the software image out of an original Archos Flash ROM dump.\n"); | ||
74 | printf("Result is a scrambled file, use the descramble tool to get the binary,\n"); | ||
75 | printf(" always without the -fm option, even if processing an FM software.\n\n"); | ||
76 | printf("Usage: extract <flash dump file> <output file>\n"); | ||
77 | printf("Example: extract internal_rom_2000000-203FFFF.bin archos.ajz\n"); | ||
78 | exit(0); | ||
79 | } | ||
80 | |||
81 | pInFile = fopen(argv[1], "rb"); | ||
82 | if (pInFile == NULL) | ||
83 | { | ||
84 | printf("Error opening input file %s\n", argv[1]); | ||
85 | exit(1); | ||
86 | } | ||
87 | |||
88 | if (fread(aImage, 1, sizeof(aImage), pInFile) != sizeof(aImage)) | ||
89 | { | ||
90 | printf("Error reading input file %s, must be 256kB in size.\n", argv[1]); | ||
91 | fclose(pInFile); | ||
92 | exit(2); | ||
93 | } | ||
94 | fclose(pInFile); | ||
95 | |||
96 | // find out about the type | ||
97 | uiStart = Read32(aImage + 8); | ||
98 | uiSize = Read32(aImage + 12); // booted ROM image | ||
99 | if (uiStart == 0x02000100 && uiSize > 20000) | ||
100 | { // Player has no loader, starts directly with the image | ||
101 | uiStart = 0x0100; | ||
102 | } | ||
103 | else | ||
104 | { // Recorder / FM / V2 Recorder | ||
105 | uiStart = IMAGE_START; | ||
106 | uiSize = Read32(aImage + IMAGE_HEADER + 4); // size record of header | ||
107 | } | ||
108 | |||
109 | // sanity check | ||
110 | if (uiSize > sizeof(aImage) - uiStart || uiSize < 40000) | ||
111 | { | ||
112 | printf("Error: Impossible image size %d bytes.\n", uiSize); | ||
113 | exit(3); | ||
114 | } | ||
115 | |||
116 | // generate checksum | ||
117 | for (i=0; i<uiSize; i++) | ||
118 | { | ||
119 | UINT8 byte; | ||
120 | byte = aImage[uiStart + i]; | ||
121 | byte = ~((byte >> 1) | ((byte << 7) & 0x80)); /* poor man's ROR */ | ||
122 | usChecksum += byte; | ||
123 | } | ||
124 | |||
125 | // make header | ||
126 | Write32(aHeader + 2, usChecksum); // checksum in 5th and 6th byte | ||
127 | Write32(aHeader, uiSize); // size in first 4 bytes | ||
128 | |||
129 | pOutFile = fopen(argv[2], "wb"); | ||
130 | if (pOutFile == NULL) | ||
131 | { | ||
132 | printf("Error opening output file %s\n", argv[2]); | ||
133 | exit(4); | ||
134 | } | ||
135 | |||
136 | if (fwrite(aHeader, 1, sizeof(aHeader), pOutFile) != sizeof(aHeader) | ||
137 | || fwrite(aImage + uiStart, 1, uiSize, pOutFile) != uiSize) | ||
138 | { | ||
139 | printf("Write error\n"); | ||
140 | fclose(pOutFile); | ||
141 | exit(5); | ||
142 | } | ||
143 | |||
144 | fclose(pOutFile); | ||
145 | |||
146 | return 0; | ||
147 | } | ||