| /* |
| * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #ifndef SME_H |
| #define SME_H |
| |
| #include <stdbool.h> |
| #include <context.h> |
| |
| /* |
| * Maximum value of LEN field in SMCR_ELx. This is different than the maximum |
| * supported value which is platform dependent. In the first version of SME the |
| * LEN field is limited to 4 bits but will be expanded in future iterations. |
| * To support different versions, the code that discovers the supported vector |
| * lengths will write the max value into SMCR_ELx then read it back to see how |
| * many bits are implemented. |
| */ |
| #define SME_SMCR_LEN_MAX U(0x1FF) |
| |
| #if ENABLE_SME_FOR_NS |
| void sme_enable(cpu_context_t *context); |
| void sme_init_el3(void); |
| void sme_init_el2_unused(void); |
| void sme_disable(cpu_context_t *context); |
| #else |
| static inline void sme_enable(cpu_context_t *context) |
| { |
| } |
| static inline void sme_init_el3(void) |
| { |
| } |
| static inline void sme_init_el2_unused(void) |
| { |
| } |
| static inline void sme_disable(cpu_context_t *context) |
| { |
| } |
| #endif /* ENABLE_SME_FOR_NS */ |
| |
| #endif /* SME_H */ |