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| 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 | |
| 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 | |
| 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 | |
| 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 |
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