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