1 /* 2 * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef __SMCCC_H__ 8 #define __SMCCC_H__ 9 10 #include <utils_def.h> 11 12 #define SMCCC_VERSION_MAJOR_SHIFT U(16) 13 #define SMCCC_VERSION_MAJOR_MASK U(0x7FFF) 14 #define SMCCC_VERSION_MINOR_SHIFT U(0) 15 #define SMCCC_VERSION_MINOR_MASK U(0xFFFF) 16 #define MAKE_SMCCC_VERSION(_major, _minor) \ 17 ( (((uint32_t)(_major) & SMCCC_VERSION_MAJOR_MASK) << SMCCC_VERSION_MAJOR_SHIFT) \ 18 | (((uint32_t)(_minor) & SMCCC_VERSION_MINOR_MASK) << SMCCC_VERSION_MINOR_SHIFT)) 19 20 #if SMCCC_MAJOR_VERSION == 1 21 # define SMCCC_MINOR_VERSION U(1) 22 # include <smccc_v1.h> 23 #elif SMCCC_MAJOR_VERSION == 2 24 # define SMCCC_MINOR_VERSION U(0) 25 # include <smccc_v2.h> 26 #else 27 # error "Unsupported version of SMCCC." 28 #endif 29 30 /* Various flags passed to SMC handlers */ 31 #define SMC_FROM_SECURE (U(0) << 0) 32 #define SMC_FROM_NON_SECURE (U(1) << 0) 33 34 #ifndef __ASSEMBLY__ 35 36 #include <cassert.h> 37 #include <stdint.h> 38 39 #define is_caller_non_secure(_f) (((_f) & SMC_FROM_NON_SECURE) != U(0)) 40 #define is_caller_secure(_f) (!is_caller_non_secure(_f)) 41 42 /* The macro below is used to identify a Standard Service SMC call */ 43 #define is_std_svc_call(_fid) (GET_SMC_OEN(_fid) == OEN_STD_START) 44 45 /* The macro below is used to identify a Arm Architectural Service SMC call */ 46 #define is_arm_arch_svc_call(_fid) (GET_SMC_OEN(_fid) == OEN_ARM_START) 47 48 /* The macro below is used to identify a valid Fast SMC call */ 49 #define is_valid_fast_smc(_fid) ((!(((_fid) >> 16) & U(0xff))) && \ 50 (GET_SMC_TYPE(_fid) == SMC_TYPE_FAST)) 51 52 /* 53 * Macro to define UUID for services. Apart from defining and initializing a 54 * uuid_t structure, this macro verifies that the first word of the defined UUID 55 * does not equal SMC_UNK. This is to ensure that the caller won't mistake the 56 * returned UUID in x0 for an invalid SMC error return 57 */ 58 #define DEFINE_SVC_UUID(_name, _tl, _tm, _th, _cl, _ch, \ 59 _n0, _n1, _n2, _n3, _n4, _n5) \ 60 CASSERT((uint32_t)(_tl) != (uint32_t) SMC_UNK, invalid_svc_uuid);\ 61 static const uuid_t _name = { \ 62 _tl, _tm, _th, _cl, _ch, \ 63 { _n0, _n1, _n2, _n3, _n4, _n5 } \ 64 } 65 66 #endif /*__ASSEMBLY__*/ 67 #endif /* __SMCCC_H__ */ 68