UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / ArmPkg / Library / ArmSmcLib / ArmSmc.c

/** @file\r
  SMC helper functions.\r
\r
  Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Library/ArmSmcLib.h>\r
#include <Library/BaseMemoryLib.h>\r
\r
/** Triggers an SMC call with 3 arguments.\r
\r
  @param Function The SMC function.\r
  @param Arg1     Argument/result.\r
  @param Arg2     Argument/result.\r
  @param Arg3     Argument/result.\r
\r
  @return The SMC error code.\r
**/\r
UINTN\r
ArmCallSmc3 (\r
  IN     UINTN  Function,\r
  IN OUT UINTN  *Arg1 OPTIONAL,\r
  IN OUT UINTN  *Arg2 OPTIONAL,\r
  IN OUT UINTN  *Arg3 OPTIONAL\r
  )\r
{\r
  ARM_SMC_ARGS  Args;\r
  UINTN         ErrorCode;\r
\r
  ZeroMem (&Args, sizeof (ARM_SMC_ARGS));\r
\r
  Args.Arg0 = Function;\r
\r
  if (Arg1 != NULL) {\r
    Args.Arg1 = *Arg1;\r
  }\r
\r
  if (Arg2 != NULL) {\r
    Args.Arg2 = *Arg2;\r
  }\r
\r
  if (Arg3 != NULL) {\r
    Args.Arg3 = *Arg3;\r
  }\r
\r
  ArmCallSmc (&Args);\r
\r
  ErrorCode = Args.Arg0;\r
\r
  if (Arg1 != NULL) {\r
    *Arg1 = Args.Arg1;\r
  }\r
\r
  if (Arg2 != NULL) {\r
    *Arg2 = Args.Arg2;\r
  }\r
\r
  if (Arg3 != NULL) {\r
    *Arg3 = Args.Arg3;\r
  }\r
\r
  return ErrorCode;\r
}\r
\r
/** Trigger an SMC call with 2 arguments.\r
\r
  @param Function The SMC function.\r
  @param Arg1     Argument/result.\r
  @param Arg2     Argument/result.\r
  @param Arg3     Result.\r
\r
  @return The SMC error code.\r
\r
**/\r
UINTN\r
ArmCallSmc2 (\r
  IN     UINTN  Function,\r
  IN OUT UINTN  *Arg1 OPTIONAL,\r
  IN OUT UINTN  *Arg2 OPTIONAL,\r
  OUT UINTN     *Arg3 OPTIONAL\r
  )\r
{\r
  return ArmCallSmc3 (Function, Arg1, Arg2, Arg3);\r
}\r
\r
/** Trigger an SMC call with 1 argument.\r
\r
  @param Function The SMC function.\r
  @param Arg1     Argument/result.\r
  @param Arg2     Result.\r
  @param Arg3     Result.\r
\r
  @return The SMC error code.\r
\r
**/\r
UINTN\r
ArmCallSmc1 (\r
  IN     UINTN  Function,\r
  IN OUT UINTN  *Arg1 OPTIONAL,\r
  OUT UINTN     *Arg2 OPTIONAL,\r
  OUT UINTN     *Arg3 OPTIONAL\r
  )\r
{\r
  return ArmCallSmc3 (Function, Arg1, Arg2, Arg3);\r
}\r
\r
/** Trigger an SMC call with 0 arguments.\r
\r
  @param Function The SMC function.\r
  @param Arg1     Result.\r
  @param Arg2     Result.\r
  @param Arg3     Result.\r
\r
  @return The SMC error code.\r
\r
**/\r
UINTN\r
ArmCallSmc0 (\r
  IN     UINTN  Function,\r
  OUT UINTN     *Arg1 OPTIONAL,\r
  OUT UINTN     *Arg2 OPTIONAL,\r
  OUT UINTN     *Arg3 OPTIONAL\r
  )\r
{\r
  return ArmCallSmc3 (Function, Arg1, Arg2, Arg3);\r
}\r