1*dc78e62dSjohpow01 /* 2*dc78e62dSjohpow01 * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. 3*dc78e62dSjohpow01 * 4*dc78e62dSjohpow01 * SPDX-License-Identifier: BSD-3-Clause 5*dc78e62dSjohpow01 */ 6*dc78e62dSjohpow01 7*dc78e62dSjohpow01 #ifndef SME_H 8*dc78e62dSjohpow01 #define SME_H 9*dc78e62dSjohpow01 10*dc78e62dSjohpow01 #include <stdbool.h> 11*dc78e62dSjohpow01 12*dc78e62dSjohpow01 #include <context.h> 13*dc78e62dSjohpow01 14*dc78e62dSjohpow01 /* 15*dc78e62dSjohpow01 * Maximum value of LEN field in SMCR_ELx. This is different than the maximum 16*dc78e62dSjohpow01 * supported value which is platform dependent. In the first version of SME the 17*dc78e62dSjohpow01 * LEN field is limited to 4 bits but will be expanded in future iterations. 18*dc78e62dSjohpow01 * To support different versions, the code that discovers the supported vector 19*dc78e62dSjohpow01 * lengths will write the max value into SMCR_ELx then read it back to see how 20*dc78e62dSjohpow01 * many bits are implemented. 21*dc78e62dSjohpow01 */ 22*dc78e62dSjohpow01 #define SME_SMCR_LEN_MAX U(0x1FF) 23*dc78e62dSjohpow01 24*dc78e62dSjohpow01 void sme_enable(cpu_context_t *context); 25*dc78e62dSjohpow01 void sme_disable(cpu_context_t *context); 26*dc78e62dSjohpow01 27*dc78e62dSjohpow01 #endif /* SME_H */ 28