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Diffstat (limited to 'flash/extract/extract.c')
| -rw-r--r-- | flash/extract/extract.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/flash/extract/extract.c b/flash/extract/extract.c deleted file mode 100644 index 2a8a7b3ec7..0000000000 --- a/flash/extract/extract.c +++ /dev/null @@ -1,145 +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 - * - * All files in this archive are subject to the GNU General Public License. - * See the file COPYING in the source tree root for full license agreement. - * - * 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 <memory.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; -}
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