1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2018 Andrew Turner 5 * 6 * This software was developed by SRI International and the University of 7 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 8 * ("CTSRD"), as part of the DARPA CRASH research programme. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34#ifndef _PSCI_SMCCC_H_ 35#define _PSCI_SMCCC_H_ 36 37#define SMCCC_VERSION_MAJOR(ver) (((ver) >> 16) & 0x7fff) 38#define SMCCC_VERSION_MINOR(ver) ((ver) & 0xffff) 39 40#define SMCCC_FUNC_ID(type, call_conv, range, func) \ 41 (((type) << 31) | \ 42 ((call_conv) << 30) | \ 43 (((range) & 0x3f) << 24) | \ 44 ((func) & 0xffff)) 45 46#define SMCCC_YIELDING_CALL 0 47#define SMCCC_FAST_CALL 1 48 49#define SMCCC_32BIT_CALL 0 50#define SMCCC_64BIT_CALL 1 51 52/* 53 * Arm Architecture Calls. 54 * These are documented in the document ARM DEN 0070A. 55 */ 56#define SMCCC_VERSION \ 57 SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0) 58#define SMCCC_ARCH_FEATURES \ 59 SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 1) 60#define SMCCC_ARCH_WORKAROUND_1 \ 61 SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0x8000) 62#define SMCCC_ARCH_WORKAROUND_2 \ 63 SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0x7fff) 64 65/* The return values from ARM DEN 0070A. */ 66#define SMCCC_RET_SUCCESS 0 67#define SMCCC_RET_NOT_SUPPORTED -1 68#define SMCCC_RET_NOT_REQUIRED -2 69 70int32_t smccc_arch_features(uint32_t); 71int smccc_arch_workaround_1(void); 72int smccc_arch_workaround_2(int); 73 74 75#endif /* _PSCI_SMCCC_H_ */ 76