58e92b394e
This is a utility library closely modeled after ArmSmcLib, that allows hypervisor call (HVC) instructions to be issued from C code. Change-Id: I5f5c65f83e910ff98dbb2f5b031dad8c4f663daa Contributed-under: TianoCore Contribution Agreement 1.0 Acked-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16088 6f19259b-4bc3-4df7-8a09-765794883524
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/** @file
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*
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* Copyright (c) 2012-2014, ARM Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#ifndef __ARM_HVC_LIB__
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#define __ARM_HVC_LIB__
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/**
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* The size of the HVC arguments are different between AArch64 and AArch32.
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* The native size is used for the arguments.
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*/
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typedef struct {
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UINTN Arg0;
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UINTN Arg1;
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UINTN Arg2;
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UINTN Arg3;
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UINTN Arg4;
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UINTN Arg5;
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UINTN Arg6;
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UINTN Arg7;
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} ARM_HVC_ARGS;
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/**
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Trigger an HVC call
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HVC calls can take up to 8 arguments and return up to 4 return values.
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Therefore, the 4 first fields in the ARM_HVC_ARGS structure are used
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for both input and output values.
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**/
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VOID
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ArmCallHvc (
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IN OUT ARM_HVC_ARGS *Args
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);
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#endif
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