forked from len0rd/rockbox
da6d7e9b44
Neo firmware image. The Open Neo project used to call this tool 'add_header'. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4136 a1c6a512-1295-4272-9138-f99709370657
112 lines
3 KiB
C
112 lines
3 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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* $Id$
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*
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* Copyright (C) 2003 by Open Neo
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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 <stdio.h>
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#include <stdlib.h>
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#define MY_FIRMWARE_TYPE "Rockbox"
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#define MY_HEADER_VERSION 1
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int main (int argc, char** argv)
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{
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unsigned long length,i,slen;
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unsigned char *inbuf;
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unsigned short checksum=0;
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unsigned char *iname = argv[1];
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unsigned char *oname = argv[2];
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unsigned char header[17];
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FILE* file;
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if (argc < 3) {
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printf("usage: %s <input file> <output file>\n",argv[0]);
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return -1;
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}
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/* open file */
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file = fopen(iname,"rb");
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if (!file) {
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perror(iname);
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return -1;
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}
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fseek(file,0,SEEK_END);
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length = ftell(file);
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length = (length + 3) & ~3; /* Round up to nearest 4 byte boundary */
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if (length >= 0x32000) {
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printf("error: max firmware size is 200KB!\n");
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fclose(file);
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return -1;
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}
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fseek(file,0,SEEK_SET);
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inbuf = malloc(length);
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if ( !inbuf ) {
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printf("out of memory!\n");
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return -1;
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}
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/* read file */
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i=fread(inbuf,1,length,file);
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if ( !i ) {
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perror(iname);
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return -1;
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}
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fclose(file);
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/* calculate checksum */
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for (i=0;i<length;i++)
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checksum+=inbuf[i];
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/* make header */
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memset(header, 0, sizeof(header));
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strncpy(header,MY_FIRMWARE_TYPE,9);
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header[9]='\0'; /*shouldn't have to, but to be SURE */
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header[10]=MY_HEADER_VERSION&0xFF;
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header[11]=(checksum>>8)&0xFF;
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header[12]=checksum&0xFF;
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header[13]=(sizeof(header)>>24)&0xFF;
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header[14]=(sizeof(header)>>16)&0xFF;
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header[15]=(sizeof(header)>>8)&0xFF;
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header[16]=sizeof(header)&0xFF;
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/* write file */
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file = fopen(oname,"wb");
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if ( !file ) {
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perror(oname);
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return -1;
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}
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if ( !fwrite(header,sizeof(header),1,file) ) {
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perror(oname);
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return -1;
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}
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if ( !fwrite(inbuf,length,1,file) ) {
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perror(oname);
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return -1;
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}
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fclose(file);
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free(inbuf);
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printf("\r\nHeader Info:\r\n\t"
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"Header Type:\t\t%s\r\n\t"
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"Header Version:\t\t%d\r\n\t"
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"Header Checksum:\t0x%x\r\n\t"
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"Data Start:\t\t0x%x\r\n\r\n",
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header,header[10],checksum,sizeof(header));
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return 0;
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}
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