1/* $NetBSD: exynos_smc.S,v 1.2 2014/09/05 08:01:05 skrll Exp $ */ 2 3/*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Reinoud Zandijk. 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 33#include <arm/asm.h> 34#include <arm/armreg.h> 35 36RCSID("$NetBSD: exynos_smc.S,v 1.2 2014/09/05 08:01:05 skrll Exp $") 37 38 .arch armv7-a 39 .arch_extension sec 40/* 41 * void 42 * exynos_smc(uint32_t cmd, uint32_t arg1, uint32_t arg2, uint32_t arg3) 43 */ 44 45 .global _C_LABEL(exynos_smc) 46_C_LABEL(exynos_smc): 47 stmfd sp!, {r4-r11, lr} 48 dsb /* Data Synchronisation Barrier */ 49 smc #0 /* Call firmware for all permissions */ 50 ldmfd sp!, {r4-r11, pc} 51END(_C_LABEL(exynos_smc)) 52 53