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53 lines
2.0 KiB
ArmAsm
53 lines
2.0 KiB
ArmAsm
/* $NetBSD: exynos_smc.S,v 1.3 2014/12/27 15:52:42 skrll Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Reinoud Zandijk.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <arm/asm.h>
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#include <arm/armreg.h>
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RCSID("$NetBSD: exynos_smc.S,v 1.3 2014/12/27 15:52:42 skrll Exp $")
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.arch armv7-a
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.arch_extension sec
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/*
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* void
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* exynos_smc(uint32_t cmd, uint32_t arg1, uint32_t arg2, uint32_t arg3)
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*/
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.global _C_LABEL(exynos_smc)
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_C_LABEL(exynos_smc):
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stmfd sp!, {r4-r11, lr}
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dsb /* Data Synchronisation Barrier */
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smc #0 /* Call firmware for all permissions */
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ldmfd sp!, {r4-r11, pc}
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END(_C_LABEL(exynos_smc))
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