1f651b525SAndrew Turner /*- 2f651b525SAndrew Turner * SPDX-License-Identifier: BSD-2-Clause 3f651b525SAndrew Turner * 4f651b525SAndrew Turner * Copyright (c) 2018 Andrew Turner 5f651b525SAndrew Turner * 6f651b525SAndrew Turner * This software was developed by SRI International and the University of 7f651b525SAndrew Turner * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 8f651b525SAndrew Turner * ("CTSRD"), as part of the DARPA CRASH research programme. 9f651b525SAndrew Turner * 10f651b525SAndrew Turner * Redistribution and use in source and binary forms, with or without 11f651b525SAndrew Turner * modification, are permitted provided that the following conditions 12f651b525SAndrew Turner * are met: 13f651b525SAndrew Turner * 1. Redistributions of source code must retain the above copyright 14f651b525SAndrew Turner * notice, this list of conditions and the following disclaimer. 15f651b525SAndrew Turner * 2. Redistributions in binary form must reproduce the above copyright 16f651b525SAndrew Turner * notice, this list of conditions and the following disclaimer in the 17f651b525SAndrew Turner * documentation and/or other materials provided with the distribution. 18f651b525SAndrew Turner * 19f651b525SAndrew Turner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20f651b525SAndrew Turner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21f651b525SAndrew Turner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22f651b525SAndrew Turner * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23f651b525SAndrew Turner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24f651b525SAndrew Turner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25f651b525SAndrew Turner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26f651b525SAndrew Turner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27f651b525SAndrew Turner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28f651b525SAndrew Turner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29f651b525SAndrew Turner * SUCH DAMAGE. 30f651b525SAndrew Turner */ 31f651b525SAndrew Turner 32f651b525SAndrew Turner #ifndef _PSCI_SMCCC_H_ 33f651b525SAndrew Turner #define _PSCI_SMCCC_H_ 34f651b525SAndrew Turner 35f651b525SAndrew Turner #define SMCCC_VERSION_MAJOR(ver) (((ver) >> 16) & 0x7fff) 36f651b525SAndrew Turner #define SMCCC_VERSION_MINOR(ver) ((ver) & 0xffff) 37f651b525SAndrew Turner 38f651b525SAndrew Turner #define SMCCC_FUNC_ID(type, call_conv, range, func) \ 39f651b525SAndrew Turner (((type) << 31) | \ 40f651b525SAndrew Turner ((call_conv) << 30) | \ 41f651b525SAndrew Turner (((range) & 0x3f) << 24) | \ 42f651b525SAndrew Turner ((func) & 0xffff)) 43f651b525SAndrew Turner 44f651b525SAndrew Turner #define SMCCC_YIELDING_CALL 0 45f651b525SAndrew Turner #define SMCCC_FAST_CALL 1 46f651b525SAndrew Turner 47f651b525SAndrew Turner #define SMCCC_32BIT_CALL 0 48f651b525SAndrew Turner #define SMCCC_64BIT_CALL 1 49f651b525SAndrew Turner 507722d8c7SRuslan Bukin #define SMCCC_ARM_ARCH_CALLS 0 517722d8c7SRuslan Bukin #define SMCCC_CPU_SERVICE_CALLS 1 527722d8c7SRuslan Bukin #define SMCCC_SIP_SERVICE_CALLS 2 537722d8c7SRuslan Bukin #define SMCCC_OEM_SERVICE_CALLS 3 547722d8c7SRuslan Bukin #define SMCCC_STD_SECURE_SERVICE_CALLS 4 557722d8c7SRuslan Bukin #define SMCCC_STD_HYP_SERVICE_CALLS 5 567722d8c7SRuslan Bukin #define SMCCC_VENDOR_HYP_SERVICE_CALLS 6 577722d8c7SRuslan Bukin 587722d8c7SRuslan Bukin struct arm_smccc_res { 597722d8c7SRuslan Bukin register_t a0; 607722d8c7SRuslan Bukin register_t a1; 617722d8c7SRuslan Bukin register_t a2; 627722d8c7SRuslan Bukin register_t a3; 637722d8c7SRuslan Bukin }; 647722d8c7SRuslan Bukin 6509d1a08dSAndrew Turner /* 6609d1a08dSAndrew Turner * Arm Architecture Calls. 6709d1a08dSAndrew Turner * These are documented in the document ARM DEN 0070A. 6809d1a08dSAndrew Turner */ 69f651b525SAndrew Turner #define SMCCC_VERSION \ 7095c4b3c7SAndrew Turner SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0) 71f651b525SAndrew Turner #define SMCCC_ARCH_FEATURES \ 7295c4b3c7SAndrew Turner SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 1) 73f651b525SAndrew Turner #define SMCCC_ARCH_WORKAROUND_1 \ 7495c4b3c7SAndrew Turner SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0x8000) 750594061eSAndrew Turner #define SMCCC_ARCH_WORKAROUND_2 \ 760594061eSAndrew Turner SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0x7fff) 77f651b525SAndrew Turner 7809d1a08dSAndrew Turner /* The return values from ARM DEN 0070A. */ 7909d1a08dSAndrew Turner #define SMCCC_RET_SUCCESS 0 8009d1a08dSAndrew Turner #define SMCCC_RET_NOT_SUPPORTED -1 8109d1a08dSAndrew Turner #define SMCCC_RET_NOT_REQUIRED -2 8209d1a08dSAndrew Turner 830600af1fSAndrew Turner void smccc_init(void); 840600af1fSAndrew Turner uint32_t smccc_get_version(void); 85f651b525SAndrew Turner int32_t smccc_arch_features(uint32_t); 86f651b525SAndrew Turner int smccc_arch_workaround_1(void); 87100a6d19SAndrew Turner int smccc_arch_workaround_2(int); 88f651b525SAndrew Turner 897722d8c7SRuslan Bukin int arm_smccc_smc(register_t, register_t, register_t, register_t, register_t, 907722d8c7SRuslan Bukin register_t, register_t, register_t, struct arm_smccc_res *res); 917722d8c7SRuslan Bukin int arm_smccc_hvc(register_t, register_t, register_t, register_t, register_t, 927722d8c7SRuslan Bukin register_t, register_t, register_t, struct arm_smccc_res *res); 93f651b525SAndrew Turner 947a58bf04SWei Hu struct arm_smccc_1_2_regs { 957a58bf04SWei Hu register_t a0; 967a58bf04SWei Hu register_t a1; 977a58bf04SWei Hu register_t a2; 987a58bf04SWei Hu register_t a3; 997a58bf04SWei Hu register_t a4; 1007a58bf04SWei Hu register_t a5; 1017a58bf04SWei Hu register_t a6; 1027a58bf04SWei Hu register_t a7; 1037a58bf04SWei Hu register_t a8; 1047a58bf04SWei Hu register_t a9; 1057a58bf04SWei Hu register_t a10; 1067a58bf04SWei Hu register_t a11; 1077a58bf04SWei Hu register_t a12; 1087a58bf04SWei Hu register_t a13; 1097a58bf04SWei Hu register_t a14; 1107a58bf04SWei Hu register_t a15; 1117a58bf04SWei Hu register_t a16; 1127a58bf04SWei Hu register_t a17; 1137a58bf04SWei Hu }; 1147a58bf04SWei Hu 1157a58bf04SWei Hu int arm_smccc_1_2_hvc(const struct arm_smccc_1_2_regs *args, 1167a58bf04SWei Hu struct arm_smccc_1_2_regs *res); 1177a58bf04SWei Hu int arm_smccc_1_2_smc(const struct arm_smccc_1_2_regs *args, 1187a58bf04SWei Hu struct arm_smccc_1_2_regs *res); 119f651b525SAndrew Turner #endif /* _PSCI_SMCCC_H_ */ 120