1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2023 Arm Ltd.
4 */
5
6 #ifndef _ASM_ARM64_POR_H
7 #define _ASM_ARM64_POR_H
8
9 #include <asm/sysreg.h>
10
11 #define POR_EL0_INIT POR_ELx_PERM_PREP(0, POE_RWX)
12
por_elx_allows_read(u64 por,u8 pkey)13 static inline bool por_elx_allows_read(u64 por, u8 pkey)
14 {
15 u8 perm = POR_ELx_PERM_GET(pkey, por);
16
17 return perm & POE_R;
18 }
19
por_elx_allows_write(u64 por,u8 pkey)20 static inline bool por_elx_allows_write(u64 por, u8 pkey)
21 {
22 u8 perm = POR_ELx_PERM_GET(pkey, por);
23
24 return perm & POE_W;
25 }
26
por_elx_allows_exec(u64 por,u8 pkey)27 static inline bool por_elx_allows_exec(u64 por, u8 pkey)
28 {
29 u8 perm = POR_ELx_PERM_GET(pkey, por);
30
31 return perm & POE_X;
32 }
33
34 #endif /* _ASM_ARM64_POR_H */
35