cfi_read
val = cfi_read(sc, ofs * sc->sc_width);
sc->sc_manid = cfi_read(sc, 0);
sc->sc_devid = cfi_read(sc, 2);
val = cfi_read(sc, ofs + i);
st = cfi_read(sc, ofs);
st0 = cfi_read(sc, ofs);
st = cfi_read(sc, ofs);
st = cfi_read(sc, sc->sc_wrofs + i);
if (cfi_read(sc, sc->sc_wrofs + i) == val)
uint32_t cfi_read(struct cfi_softc *, u_int);