| johpow01 | 9baade3 | 2021-07-08 14:14:00 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #ifndef SME_H |
| 8 | #define SME_H |
| 9 | |
| 10 | #include <stdbool.h> |
| 11 | |
| 12 | #include <context.h> |
| 13 | |
| 14 | /* |
| 15 | * Maximum value of LEN field in SMCR_ELx. This is different than the maximum |
| 16 | * supported value which is platform dependent. In the first version of SME the |
| 17 | * LEN field is limited to 4 bits but will be expanded in future iterations. |
| 18 | * To support different versions, the code that discovers the supported vector |
| 19 | * lengths will write the max value into SMCR_ELx then read it back to see how |
| 20 | * many bits are implemented. |
| 21 | */ |
| 22 | #define SME_SMCR_LEN_MAX U(0x1FF) |
| 23 | |
| 24 | void sme_enable(cpu_context_t *context); |
| 25 | void sme_disable(cpu_context_t *context); |
| 26 | |
| 27 | #endif /* SME_H */ |