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ArmPkg: Add SMC helper functions

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Add functions ArmCallSmc0/1/2/3 to do SMC calls with 0, 1, 2 or 3
arguments.
The functions return up to 3 values.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
This commit is contained in:
Rebecca Cran
2021-12-13 11:30:55 -07:00
committed by mergify[bot]
parent 7a6e6ae933
commit 4d30352445
4 changed files with 290 additions and 0 deletions
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85
ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.c
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@@ -1,4 +1,5 @@
//
// Copyright (c) 2021, NUVIA Inc. All rights reserved.
// Copyright (c) 2016, Linaro Limited. All rights reserved.
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -7,6 +8,7 @@
#include <Base.h>
#include <Library/ArmSmcLib.h>
#include <IndustryStandard/ArmStdSmc.h>
VOID
ArmCallSmc (
@@ -14,3 +16,86 @@ ArmCallSmc (
)
{
}
/** 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
)
{
return SMC_ARCH_CALL_NOT_SUPPORTED;
}
/** 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 SMC_ARCH_CALL_NOT_SUPPORTED;
}
/** 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 SMC_ARCH_CALL_NOT_SUPPORTED;
}
/** 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 SMC_ARCH_CALL_NOT_SUPPORTED;
}