void file_load_postload( const gchar *filename, int pc )
{
gchar *bootstrap_file = lxdream_get_global_config_path_value(CONFIG_BOOTSTRAP);
if( bootstrap_file != NULL && bootstrap_file[0] != '\0' ) {
/* Load in a bootstrap before the binary, to initialize everything
* correctly
*/
if( mem_load_block( bootstrap_file, BOOTSTRAP_LOAD_ADDR, BOOTSTRAP_SIZE ) == 0 ) {
dreamcast_program_loaded( filename, BOOTSTRAP_ENTRY_ADDR );
g_free(bootstrap_file);
return;
}
}
dreamcast_program_loaded( filename, pc );
g_free(bootstrap_file);
}
gboolean bios_boot_gdrom_disc( void )
{
cdrom_disc_t disc = gdrom_get_current_disc();
int status = gdrom_get_drive_status();
if( status == CDROM_DISC_NONE ) {
ERROR( "No disc in drive" );
return FALSE;
}
/* Find the bootable data track (if present) */
cdrom_track_t track = gdrom_disc_get_boot_track(disc);
if( track == NULL ) {
ERROR( "Disc is not bootable" );
return FALSE;
}
uint32_t lba = track->lba;
uint32_t sectors = cdrom_disc_get_track_size(disc,track);
if( sectors < MIN_ISO_SECTORS ) {
ERROR( "Disc is not bootable" );
return FALSE;
}
/* Load the initial bootstrap into DC ram at 8c008000 */
size_t length = BOOTSTRAP_SIZE;
unsigned char *bootstrap = mem_get_region(BOOTSTRAP_LOAD_ADDR);
if( cdrom_disc_read_sectors( disc, track->lba, BOOTSTRAP_SIZE/2048,
CDROM_READ_DATA|CDROM_READ_MODE2_FORM1, bootstrap, &length ) !=
CDROM_ERROR_OK ) {
ERROR( "Disc is not bootable" );
return FALSE;
}
/* Check the magic just to be sure */
dc_bootstrap_head_t metadata = (dc_bootstrap_head_t)bootstrap;
if( memcmp( metadata->magic, BOOTSTRAP_MAGIC, BOOTSTRAP_MAGIC_SIZE ) != 0 ) {
ERROR( "Disc is not bootable (missing dreamcast bootstrap)" );
return FALSE;
}
/* Get the initial program from the bootstrap (usually 1ST_READ.BIN) */
char program_name[18] = "/";
memcpy(program_name+1, metadata->boot_file, 16);
program_name[17] = '\0';
for( int i=16; i >= 0 && program_name[i] == ' '; i-- ) {
program_name[i] = '\0';
}
/* Bootstrap is good. Now find the program in the actual filesystem... */
unsigned char *program = mem_get_region(BINARY_LOAD_ADDR);
gboolean isGDROM = (disc->disc_type == CDROM_DISC_GDROM );
if( !bios_load_ipl( disc, track, program_name, program, !isGDROM ) )
return FALSE;
asic_enable_ide_interface(isGDROM);
dreamcast_program_loaded( "", BOOTSTRAP_ENTRY_ADDR );
return TRUE;
}
