rtas_progress
void rtas_progress(char *s, unsigned short hex);
rtas_progress ((char *)progress_led, hex);
EXPORT_SYMBOL_GPL(rtas_progress); /* needed by rtas_flash module */
rtas_progress("Flashing \n", 0x0);
rtas_progress("Please Wait... ", 0x0);
.progress = rtas_progress,
ppc_md.progress = rtas_progress;
.progress = rtas_progress,