1dc78e62dSjohpow01 /* 245007acdSJayanth Dodderi Chidanand * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved. 3dc78e62dSjohpow01 * 4dc78e62dSjohpow01 * SPDX-License-Identifier: BSD-3-Clause 5dc78e62dSjohpow01 */ 6dc78e62dSjohpow01 7dc78e62dSjohpow01 #ifndef SME_H 8dc78e62dSjohpow01 #define SME_H 9dc78e62dSjohpow01 10dc78e62dSjohpow01 #include <stdbool.h> 11dc78e62dSjohpow01 #include <context.h> 12dc78e62dSjohpow01 13dc78e62dSjohpow01 /* 14dc78e62dSjohpow01 * Maximum value of LEN field in SMCR_ELx. This is different than the maximum 15dc78e62dSjohpow01 * supported value which is platform dependent. In the first version of SME the 16dc78e62dSjohpow01 * LEN field is limited to 4 bits but will be expanded in future iterations. 17dc78e62dSjohpow01 * To support different versions, the code that discovers the supported vector 18dc78e62dSjohpow01 * lengths will write the max value into SMCR_ELx then read it back to see how 19dc78e62dSjohpow01 * many bits are implemented. 20dc78e62dSjohpow01 */ 21dc78e62dSjohpow01 #define SME_SMCR_LEN_MAX U(0x1FF) 22dc78e62dSjohpow01 2345007acdSJayanth Dodderi Chidanand #if ENABLE_SME_FOR_NS 2460d330dcSBoyan Karatotev void sme_init_el3(void); 2560d330dcSBoyan Karatotev void sme_init_el2_unused(void); 26*461c0a5dSElizabeth Ho void sme_enable(cpu_context_t *context); 27dc78e62dSjohpow01 void sme_disable(cpu_context_t *context); 28*461c0a5dSElizabeth Ho void sme_enable_per_world(per_world_context_t *per_world_ctx); 29*461c0a5dSElizabeth Ho void sme_disable_per_world(per_world_context_t *per_world_ctx); 3045007acdSJayanth Dodderi Chidanand #else sme_init_el3(void)3160d330dcSBoyan Karatotevstatic inline void sme_init_el3(void) 3260d330dcSBoyan Karatotev { 3360d330dcSBoyan Karatotev } sme_init_el2_unused(void)3460d330dcSBoyan Karatotevstatic inline void sme_init_el2_unused(void) 3560d330dcSBoyan Karatotev { 3660d330dcSBoyan Karatotev } sme_enable(cpu_context_t * context)37*461c0a5dSElizabeth Hostatic inline void sme_enable(cpu_context_t *context) 38*461c0a5dSElizabeth Ho { 39*461c0a5dSElizabeth Ho } sme_disable(cpu_context_t * context)4045007acdSJayanth Dodderi Chidanandstatic inline void sme_disable(cpu_context_t *context) 4145007acdSJayanth Dodderi Chidanand { 4245007acdSJayanth Dodderi Chidanand } sme_enable_per_world(per_world_context_t * per_world_ctx)43*461c0a5dSElizabeth Hostatic inline void sme_enable_per_world(per_world_context_t *per_world_ctx) 44*461c0a5dSElizabeth Ho { 45*461c0a5dSElizabeth Ho } sme_disable_per_world(per_world_context_t * per_world_ctx)46*461c0a5dSElizabeth Hostatic inline void sme_disable_per_world(per_world_context_t *per_world_ctx) 47*461c0a5dSElizabeth Ho { 48*461c0a5dSElizabeth Ho } 4945007acdSJayanth Dodderi Chidanand #endif /* ENABLE_SME_FOR_NS */ 50dc78e62dSjohpow01 51dc78e62dSjohpow01 #endif /* SME_H */ 52