#define CP15_CR1_M_BIT 0
#define CP15_CR1_A_BIT 1
#define CP15_CR1_C_BIT 2
#define CP15_CR1_B_BIT 7
#define CP15_CR1_S_BIT 8
#define CP15_CR1_R_BIT 9
#define CP15_CR1_I_BIT 12
#define CP15_CR1_V_BIT 13
#define CP15_CR1_RR_BIT 14
#define CP15_CR1_L4_BIT 15