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/*
* fwimagen.c
*
* program to build a netloadable firmware image
*
*
* inputs:
*
* pal - stripped object file for pal code
* firmware - stripped image file for firmware
* image - output file name
*
*/
/*
* output format
*
* 0000 0000 - 0000 3fff firmware pal code
* 0000 4000 - upwards firmware code + data
*/
/*
* must figure out where data segment sits, can we control it with
* a loader switch?
*/
#include <stdio.h>
#include <io.h>
#include <fcntl.h>
#define PAL_SIZ 0x4000
//
// format: argv[0] palname firmware output
//
main( argc, argv )
int argc;
char **argv;
{
FILE *fdpal, *fdfirm, *fdimage;
int inbytes=0, palbytes, ldrbytes, kernbytes, in, out;
unsigned char zero = 0;
unsigned char data;
if( argc != 4 ){
fprintf( stderr, "usage: %s pal firmware output\n", argv[0] );
exit(0);
}
if( (fdpal = fopen( argv[1], "rb" )) == NULL ){
fprintf( stderr, "error opening %s\n", argv[1] );
exit(0);
}
if( (fdfirm = fopen( argv[2], "rb" )) == NULL ){
fprintf( stderr, "error opening %s\n", argv[2] );
exit(0);
}
if( (fdimage = fopen( argv[3], "wb" )) == NULL ){
fprintf( stderr, "error opening %s for output\n", argv[3] );
exit(0);
}
/* write out the pal code */
inbytes = 0;
fprintf( stdout, "writing palcode ....\t" );
while( (in = fread( &data, sizeof(data), 1, fdpal) == sizeof(data) )){
inbytes += in;
if( (out = fwrite( &data, sizeof(data), 1, fdimage)) != sizeof(data) ){
fprintf( stderr, "error writing pal to %s: line %d\n", argv[3], __LINE__ );
exit(0);
}
}
inbytes += in;
if (in != 0) {
if( (out = fwrite( &data, in, 1, fdimage)) != in ){
fprintf( stderr, "error writing pal to %s: line %d\n", argv[3], __LINE__ );
fprintf( stderr, "write was %d, wrote %d\n", in, out);
exit(0);
}
}
if( inbytes > PAL_SIZ ){
fprintf( stderr, "pal exceeded %d bytes = %d, aborting...\n",
PAL_SIZ, inbytes );
exit(0);
}
fprintf( stdout, "%6x %d bytes\n", inbytes, inbytes );
palbytes = inbytes;
fprintf( stdout, "padding palcode ....\t" );
/* pad output to PAL_SIZ bytes */
while( inbytes++ < (PAL_SIZ) )
if( (out = fwrite( &zero, 1, 1, fdimage)) != 1 ){
fprintf( stderr, "error padding after pal to %s\n", argv[3] );
exit(0);
}
fprintf( stdout, "%6x %d bytes\n", inbytes - palbytes -1, inbytes - palbytes -1 );
/* write the firmware into the output file */
fprintf( stdout, "writing firmware ....\t" );
inbytes = 0;
while( (in = fread( &data, sizeof(data), 1, fdfirm) == sizeof(data) )){
inbytes += in;
if( (out = fwrite( &data, sizeof(data), 1, fdimage)) != sizeof(data) ){
fprintf( stderr, "error writing firmware to %s\n", argv[3] );
exit(0);
}
}
inbytes += in;
if ( in != 0 ) {
if( (out = fwrite( &data, in, 1, fdimage)) != in ){
fprintf( stderr, "error writing firmwaer to %s\n", argv[3] );
exit(0);
}
}
fprintf( stdout, "%6x %d bytes\n", inbytes, inbytes );
}
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