1 /* $NetBSD: smccc.h,v 1.2 2021/08/07 21:21:49 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2021 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _ARM_SMCCC_H 30 #define _ARM_SMCCC_H 31 32 /* 33 * SMCCC return codes 34 */ 35 #define SMCCC_SUCCESS 0 36 #define SMCCC_NOT_SUPPORTED -1 37 #define SMCCC_NOT_REQUIRED -2 38 #define SMCCC_INVALID_PARAMETER -3 39 40 /* 41 * Returns true if SMCCC is supported. 42 */ 43 bool smccc_probe(void); 44 45 /* 46 * Get SMCCC version. 47 */ 48 int smccc_version(void); 49 50 /* 51 * Call an SMC/HVC service. 52 */ 53 int smccc_call(uint32_t, register_t, register_t, register_t, register_t, 54 register_t *, register_t *, register_t *, register_t *); 55 56 #endif /* _ARM_SMCCC_H */ 57