TTB_IRGN_WT        16 arch/arm/mm/proc-v7-2level.S #define TTB_IRGN_WT	((1 << 0) | (0 << 6))
TTB_IRGN_WT        14 arch/arm/mm/proc-v7-3level.S #define TTB_IRGN_WT	(2 << 8)