ArmPkg/Include/Library/ArmHvcLib.h

   1 /** @file
   2 *
   3 *  Copyright (c) 2012-2014, ARM Limited. All rights reserved.
   4 *
   5 *  SPDX-License-Identifier: BSD-2-Clause-Patent
   6 *
   7 **/
   8
   9 #ifndef __ARM_HVC_LIB__
  10 #define __ARM_HVC_LIB__
  11
  12 /**
  13  * The size of the HVC arguments are different between AArch64 and AArch32.
  14  * The native size is used for the arguments.
  15  */
  16 typedef struct {
  17   UINTN  Arg0;
  18   UINTN  Arg1;
  19   UINTN  Arg2;
  20   UINTN  Arg3;
  21   UINTN  Arg4;
  22   UINTN  Arg5;
  23   UINTN  Arg6;
  24   UINTN  Arg7;
  25 } ARM_HVC_ARGS;
  26
  27 /**
  28   Trigger an HVC call
  29
  30   HVC calls can take up to 8 arguments and return up to 4 return values.
  31   Therefore, the 4 first fields in the ARM_HVC_ARGS structure are used
  32   for both input and output values.
  33
  34 **/
  35 VOID
  36 ArmCallHvc (
  37   IN OUT ARM_HVC_ARGS *Args
  38   );
  39
  40 #endif