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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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73
ArmPkg/Include/Library/ArmSmcLib.h
View File

@@ -1,5 +1,6 @@
/** @file
*
* Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
* Copyright (c) 2012-2014, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -37,4 +38,76 @@ ArmCallSmc (
IN OUT ARM_SMC_ARGS *Args
);
/** Trigger 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
);
/** 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
);
/** 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
);
/** 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
);
#endif // ARM_SMC_LIB_H_