prom_map_phys
if (prom_map_phys(-1, size, virt, physaddr) == -1) {
if (prom_map_phys(-1, size, virt, physaddr) != 0) {
extern int prom_map_phys(int mode, size_t size, caddr_t virt,
err = prom_map_phys(-1, MMU_PAGESIZE, virt, phys);
if (prom_map_phys(-1, PANICBUFSIZE, panicbuf, pa) != 0)
extern int prom_map_phys(int mode, size_t size, caddr_t virt,
extern int prom_map_phys(int mode, size_t size, caddr_t virt,