CCB_BASE
CCB_BASE, CCB_SIZE, &sc->sc_bsh);
bus_space_write_4(bst, bsh, CCB_BASE + RNG_BASE + RNG_INT_MASK, RNG_INT_OFF);
bus_space_write_4(bst, bsh, CCB_BASE + RNG_BASE + RNG_CTRL,
bus_space_read_4(bst, bsh, CCB_BASE + RNG_BASE + RNG_CTRL) | RNG_RBGEN);