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60d330dc4d
Combining the EL2 and EL3 enablement code necessitates that it must be called at el3_exit, which is the only place with enough context to make the decision of what needs to be set. Decouple them to allow them to be called from elsewhere. Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com> Change-Id: I147764c42771e7d4100699ec8fae98dac0a505c0
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef SME_H
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#define SME_H
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#include <stdbool.h>
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#include <context.h>
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/*
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* Maximum value of LEN field in SMCR_ELx. This is different than the maximum
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* supported value which is platform dependent. In the first version of SME the
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* LEN field is limited to 4 bits but will be expanded in future iterations.
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* To support different versions, the code that discovers the supported vector
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* lengths will write the max value into SMCR_ELx then read it back to see how
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* many bits are implemented.
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*/
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#define SME_SMCR_LEN_MAX U(0x1FF)
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#if ENABLE_SME_FOR_NS
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void sme_enable(cpu_context_t *context);
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void sme_init_el3(void);
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void sme_init_el2_unused(void);
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void sme_disable(cpu_context_t *context);
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#else
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static inline void sme_enable(cpu_context_t *context)
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{
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}
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static inline void sme_init_el3(void)
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{
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}
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static inline void sme_init_el2_unused(void)
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{
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}
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static inline void sme_disable(cpu_context_t *context)
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{
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}
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#endif /* ENABLE_SME_FOR_NS */
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#endif /* SME_H */
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