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69 lines
2.2 KiB
69 lines
2.2 KiB
/*
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* Copyright (c) 2016-2018, 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 __SMCCC_H__
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#define __SMCCC_H__
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#include <utils_def.h>
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#define SMCCC_VERSION_MAJOR_SHIFT U(16)
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#define SMCCC_VERSION_MAJOR_MASK U(0x7FFF)
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#define SMCCC_VERSION_MINOR_SHIFT U(0)
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#define SMCCC_VERSION_MINOR_MASK U(0xFFFF)
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#define MAKE_SMCCC_VERSION(_major, _minor) \
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((((uint32_t)(_major) & SMCCC_VERSION_MAJOR_MASK) << \
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SMCCC_VERSION_MAJOR_SHIFT) \
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| (((uint32_t)(_minor) & SMCCC_VERSION_MINOR_MASK) << \
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SMCCC_VERSION_MINOR_SHIFT))
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#if SMCCC_MAJOR_VERSION == 1
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# define SMCCC_MINOR_VERSION U(1)
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# include <smccc_v1.h>
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#elif SMCCC_MAJOR_VERSION == 2
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# define SMCCC_MINOR_VERSION U(0)
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# include <smccc_v2.h>
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#else
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# error "Unsupported version of SMCCC."
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#endif
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/* Various flags passed to SMC handlers */
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#define SMC_FROM_SECURE (U(0) << 0)
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#define SMC_FROM_NON_SECURE (U(1) << 0)
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#ifndef __ASSEMBLY__
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#include <cassert.h>
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#include <stdint.h>
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#define is_caller_non_secure(_f) (((_f) & SMC_FROM_NON_SECURE) != U(0))
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#define is_caller_secure(_f) (!is_caller_non_secure(_f))
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/* The macro below is used to identify a Standard Service SMC call */
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#define is_std_svc_call(_fid) (GET_SMC_OEN(_fid) == OEN_STD_START)
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/* The macro below is used to identify a Arm Architectural Service SMC call */
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#define is_arm_arch_svc_call(_fid) (GET_SMC_OEN(_fid) == OEN_ARM_START)
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/* The macro below is used to identify a valid Fast SMC call */
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#define is_valid_fast_smc(_fid) ((!(((_fid) >> 16) & U(0xff))) && \
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(GET_SMC_TYPE(_fid) == SMC_TYPE_FAST))
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/*
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* Macro to define UUID for services. Apart from defining and initializing a
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* uuid_t structure, this macro verifies that the first word of the defined UUID
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* does not equal SMC_UNK. This is to ensure that the caller won't mistake the
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* returned UUID in x0 for an invalid SMC error return
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*/
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#define DEFINE_SVC_UUID(_name, _tl, _tm, _th, _cl, _ch, \
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_n0, _n1, _n2, _n3, _n4, _n5) \
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CASSERT((uint32_t)(_tl) != (uint32_t) SMC_UNK, invalid_svc_uuid);\
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static const uuid_t _name = { \
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_tl, _tm, _th, _cl, _ch, \
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{ _n0, _n1, _n2, _n3, _n4, _n5 } \
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}
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#endif /*__ASSEMBLY__*/
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#endif /* __SMCCC_H__ */
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