| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _ASM_POWERPC_ARCHRANDOM_H |
| 3 | #define _ASM_POWERPC_ARCHRANDOM_H |
| 4 | |
| 5 | #ifdef CONFIG_ARCH_RANDOM |
| 6 | |
| 7 | #include <asm/machdep.h> |
| 8 | |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 9 | static inline bool __must_check arch_get_random_long(unsigned long *v) |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 10 | { |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 11 | return false; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 12 | } |
| 13 | |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 14 | static inline bool __must_check arch_get_random_int(unsigned int *v) |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 15 | { |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 16 | return false; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 17 | } |
| 18 | |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 19 | static inline bool __must_check arch_get_random_seed_long(unsigned long *v) |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 20 | { |
| 21 | if (ppc_md.get_random_seed) |
| 22 | return ppc_md.get_random_seed(v); |
| 23 | |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 24 | return false; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 25 | } |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 26 | |
| 27 | static inline bool __must_check arch_get_random_seed_int(unsigned int *v) |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 28 | { |
| 29 | unsigned long val; |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 30 | bool rc; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 31 | |
| Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 32 | rc = arch_get_random_seed_long(&val); |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 33 | if (rc) |
| 34 | *v = val; |
| 35 | |
| 36 | return rc; |
| 37 | } |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 38 | #endif /* CONFIG_ARCH_RANDOM */ |
| 39 | |
| 40 | #ifdef CONFIG_PPC_POWERNV |
| 41 | int powernv_hwrng_present(void); |
| 42 | int powernv_get_random_long(unsigned long *v); |
| 43 | int powernv_get_random_real_mode(unsigned long *v); |
| 44 | #else |
| 45 | static inline int powernv_hwrng_present(void) { return 0; } |
| 46 | static inline int powernv_get_random_real_mode(unsigned long *v) { return 0; } |
| 47 | #endif |
| 48 | |
| 49 | #endif /* _ASM_POWERPC_ARCHRANDOM_H */ |