ID_AA64MMFR1_LO_SHIFT
#define ID_AA64MMFR1_LO_MASK (0xf << ID_AA64MMFR1_LO_SHIFT)
#define ID_AA64MMFR1_LO_NONE (0x0 << ID_AA64MMFR1_LO_SHIFT)
#define ID_AA64MMFR1_LO_IMPL (0x1 << ID_AA64MMFR1_LO_SHIFT)