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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Will Robertson
*
* 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>
static FILE * openinfile( const char * filename )
{
FILE * F = fopen( filename, "rb" );
if( F == NULL )
{
fprintf( stderr, "Couldn't open input file %s\n", filename );
perror( "Error was " );
exit( -1 );
};
return F;
};
static FILE * openoutfile( const char * filename )
{
FILE * F = fopen( filename, "wb" );
if( F == NULL )
{
fprintf( stderr, "Couldn't open output file %s\n", filename );
perror( "Error was " );
exit( -1 );
};
return F;
};
unsigned long calc_csum(const unsigned char* pb, int cb)
{
unsigned long l = 0;
while (cb--)
l += *pb++;
return l;
}
int gigabeat_s_code(char *infile, char *outfile)
{
FILE *in, *out;
unsigned long size = 0;
unsigned long data;
int imagelength;
in = openinfile(infile);
out = openoutfile(outfile);
fseek(in, 0, SEEK_END);
size = ftell(in);
fseek(in, 0, SEEK_SET);
unsigned long *binptr = malloc(size);
if(binptr == NULL) {
fprintf(stderr, "Not enough memory to perform the requested operation. Aborting.\n" );
return 0;
}
fread(binptr, size/4, 4, in);
/* 15 bytes for header, three 12 byte headers, the data for the first three
* records, 12 byte header for code, code and the 12 byte footer
* However, the original nk.bin's length doesn't correspond with
* the length of the file, so I don't know what's up...
*/
unsigned long header[2];
header[0] = 0x88200000;
/* header[1] = 15 + 12 + 4 + 12 + 8 + 12 + 4 + 12 + size + 12; */
header[1] = 0xCC0CD8; /* The bootloader checks this value and compares */
fwrite("B000FF\n", 7, 1, out);
fwrite(header, sizeof(header), 1, out);
unsigned long record[4];
unsigned long extra;
/*First record*/
record[0] = 0x88200000;
record[1] = 4;
record[2] = 0x1eb;
record[3] = 0xEA0003FE;
fwrite(record, sizeof(record), 1, out);
/*Second record*/
record[0] = 0x88200040;
record[1] = 8;
record[2] = 0x3e9;
record[3] = 0x43454345;
extra = 0x88EBF274;
fwrite(record, sizeof(record), 1, out);
fwrite(&extra, sizeof(extra), 1, out);
/*Third record*/
record[0] = 0x88200048;
record[1] = 4;
record[2] = 0x231;
record[3] = 0x00CBF274;
fwrite(record, sizeof(record), 1, out);
/*Signature bypass record*/
unsigned long magic = 0xE3A00001;
record[0] = 0x88065A10;
record[1] = 4;
record[2] = calc_csum((unsigned char*)&magic,4);
record[3] = magic;
fwrite(record, sizeof(record), 1, out);
/*The actual code*/
header[0] = 0x88201000;
header[1] = size;
extra = calc_csum((unsigned char*)binptr, size);
fwrite(header, sizeof(header), 1, out);
fwrite(&extra, sizeof(extra), 1, out);
fwrite(binptr, size, 1, out);
/* Table of contents. It's a start, but it still won't boot.
* Looks like it needs the file/module info as well... */
binptr[0] = 0x02000000;
binptr[1] = 0x02000000;
binptr[2] = 0x88040000;
binptr[3] = 0x88076338;
binptr[4] = 0x1;
binptr[5] = 0x88080000;
binptr[6] = 0x8809C000;
binptr[7] = 0x88100000;
binptr[8] = 0x0;
binptr[9] = 0x0;
binptr[10] = 0x0;
binptr[11] = 0x0;
binptr[12] = 0x0;
binptr[13] = 0x0;
binptr[14] = 0x80808080;
binptr[15] = 0x0;
binptr[16] = 0x0;
binptr[17] = 0x201C2;
binptr[18] = 0x88050940;
binptr[19] = 0x0;
binptr[20] = 0x0;
header[0] = 0x88EBF274;
header[1] = 0x54;
extra = calc_csum((unsigned char*)binptr, 84);
fwrite(header, sizeof(header), 1, out);
fwrite(&extra, sizeof(extra), 1, out);
fwrite(binptr, 84, 1, out);
/*The footer*/
header[0] = 0;
header[1] = 0x88201000;
extra = 0;
fwrite(header, sizeof(header), 1, out);
fwrite(&extra, sizeof(extra), 1, out);
fprintf(stderr, "File processed successfully\n" );
fclose(in);
fclose(out);
return(0);
}
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