1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ARCH_ARM_FAULT_H
3 #define __ARCH_ARM_FAULT_H
4 
5 /*
6  * Fault status register encodings.  We steal bit 31 for our own purposes.
7  */
8 #define FSR_LNX_PF		(1 << 31)
9 #define FSR_CM			(1 << 13)
10 #define FSR_WRITE		(1 << 11)
11 #define FSR_FS4			(1 << 10)
12 #define FSR_FS3_0		(15)
13 #define FSR_FS5_0		(0x3f)
14 
15 #ifdef CONFIG_ARM_LPAE
16 #define FSR_FS_AEA		17
17 #define FS_TRANS_NOLL		0x4
18 #define FS_PERM_NOLL		0xC
19 #define FS_MMU_NOLL_MASK	0x3C
20 
fsr_fs(unsigned int fsr)21 static inline int fsr_fs(unsigned int fsr)
22 {
23 	return fsr & FSR_FS5_0;
24 }
25 #else
26 #define FSR_FS_AEA		22
27 #define FS_L1_TRANS		0x5
28 #define FS_L2_TRANS		0x7
29 #define FS_L1_PERM		0xD
30 #define FS_L2_PERM		0xF
31 
fsr_fs(unsigned int fsr)32 static inline int fsr_fs(unsigned int fsr)
33 {
34 	return (fsr & FSR_FS3_0) | (fsr & FSR_FS4) >> 6;
35 }
36 #endif
37 
38 void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs);
39 void early_abt_enable(void);
40 
41 #endif	/* __ARCH_ARM_FAULT_H */
42