ICH_GFPREG_BASE_MASK
sc->sc_ich8_flash_base = (reg & ICH_GFPREG_BASE_MASK) *
((reg >> 16) & ICH_GFPREG_BASE_MASK) + 1;
sc->sc_ich8_flash_bank_size -= (reg & ICH_GFPREG_BASE_MASK);