summaryrefslogtreecommitdiffstats
path: root/flash/extract/extract.c
diff options
context:
space:
mode:
Diffstat (limited to 'flash/extract/extract.c')
-rw-r--r--flash/extract/extract.c147
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 @@
-/***************************************************************************
- * __________ __ ___.
- * Open \______ \ ____ ____ | | _\_ |__ _______ ___
- * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
- * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
- * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
- * \/ \/ \/ \/ \/
- * $Id$
- *
- * Copyright (C) 2003 by Jörg Hohensohn
- *
- * Tool to extract the scrambled image out of an Archos flash ROM dump
- *
- * 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.
- *
- ****************************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <inttypes.h>
-
-#define UINT8 unsigned char
-#define UINT16 unsigned short
-#define UINT32 unsigned long
-
-#define IMAGE_HEADER 0x6000 // a 32 byte header in front of the software image
-#define IMAGE_START 0x6020 // software image position in Flash
-
-
-// place a 32 bit value into memory, big endian
-void Write32(UINT8* pByte, UINT32 value)
-{
- pByte[0] = (UINT8)(value >> 24);
- pByte[1] = (UINT8)(value >> 16);
- pByte[2] = (UINT8)(value >> 8);
- pByte[3] = (UINT8)(value);
-}
-
-
-// read a 32 bit value from memory, big endian
-UINT32 Read32(UINT8* pByte)
-{
- UINT32 value = 0;
-
- value |= (UINT32)pByte[0] << 24;
- value |= (UINT32)pByte[1] << 16;
- value |= (UINT32)pByte[2] << 8;
- value |= (UINT32)pByte[3];
-
- return value;
-}
-
-
-// entry point
-int main(int argc, char* argv[])
-{
- FILE* pInFile;
- FILE* pOutFile;
- UINT8 aHeader[6];
- UINT8 aImage[256*1024];
- UINT32 i;
- UINT32 uiSize, uiStart;
- UINT16 usChecksum = 0;
-
- if (argc < 2)
- {
- printf("Extract the software image out of an original Archos Flash ROM dump.\n");
- printf("Result is a scrambled file, use the descramble tool to get the binary,\n");
- printf(" always without the -fm option, even if processing an FM software.\n\n");
- printf("Usage: extract <flash dump file> <output file>\n");
- printf("Example: extract internal_rom_2000000-203FFFF.bin archos.ajz\n");
- exit(0);
- }
-
- pInFile = fopen(argv[1], "rb");
- if (pInFile == NULL)
- {
- printf("Error opening input file %s\n", argv[1]);
- exit(1);
- }
-
- if (fread(aImage, 1, sizeof(aImage), pInFile) != sizeof(aImage))
- {
- printf("Error reading input file %s, must be 256kB in size.\n", argv[1]);
- fclose(pInFile);
- exit(2);
- }
- fclose(pInFile);
-
- // find out about the type
- uiStart = Read32(aImage + 8);
- uiSize = Read32(aImage + 12); // booted ROM image
- if (uiStart == 0x02000100 && uiSize > 20000)
- { // Player has no loader, starts directly with the image
- uiStart = 0x0100;
- }
- else
- { // Recorder / FM / V2 Recorder
- uiStart = IMAGE_START;
- uiSize = Read32(aImage + IMAGE_HEADER + 4); // size record of header
- }
-
- // sanity check
- if (uiSize > sizeof(aImage) - uiStart || uiSize < 40000)
- {
- printf("Error: Impossible image size %d bytes.\n", uiSize);
- exit(3);
- }
-
- // generate checksum
- for (i=0; i<uiSize; i++)
- {
- UINT8 byte;
- byte = aImage[uiStart + i];
- byte = ~((byte >> 1) | ((byte << 7) & 0x80)); /* poor man's ROR */
- usChecksum += byte;
- }
-
- // make header
- Write32(aHeader + 2, usChecksum); // checksum in 5th and 6th byte
- Write32(aHeader, uiSize); // size in first 4 bytes
-
- pOutFile = fopen(argv[2], "wb");
- if (pOutFile == NULL)
- {
- printf("Error opening output file %s\n", argv[2]);
- exit(4);
- }
-
- if (fwrite(aHeader, 1, sizeof(aHeader), pOutFile) != sizeof(aHeader)
- || fwrite(aImage + uiStart, 1, uiSize, pOutFile) != uiSize)
- {
- printf("Write error\n");
- fclose(pOutFile);
- exit(5);
- }
-
- fclose(pOutFile);
-
- return 0;
-}