4d30352445
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>
114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
/** @file
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*
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* Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
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* Copyright (c) 2012-2014, ARM Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#ifndef ARM_SMC_LIB_H_
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#define ARM_SMC_LIB_H_
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/**
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* The size of the SMC arguments are different between AArch64 and AArch32.
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* The native size is used for the arguments.
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*/
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typedef struct {
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UINTN Arg0;
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UINTN Arg1;
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UINTN Arg2;
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UINTN Arg3;
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UINTN Arg4;
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UINTN Arg5;
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UINTN Arg6;
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UINTN Arg7;
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} ARM_SMC_ARGS;
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/**
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Trigger an SMC call
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SMC calls can take up to 7 arguments and return up to 4 return values.
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Therefore, the 4 first fields in the ARM_SMC_ARGS structure are used
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for both input and output values.
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**/
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VOID
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ArmCallSmc (
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IN OUT ARM_SMC_ARGS *Args
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);
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/** Trigger an SMC call with 3 arguments.
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@param Function The SMC function.
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@param Arg1 Argument/result.
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@param Arg2 Argument/result.
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@param Arg3 Argument/result.
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@return The SMC error code.
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**/
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UINTN
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ArmCallSmc3 (
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IN UINTN Function,
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IN OUT UINTN *Arg1 OPTIONAL,
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IN OUT UINTN *Arg2 OPTIONAL,
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IN OUT UINTN *Arg3 OPTIONAL
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);
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/** Trigger an SMC call with 2 arguments.
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@param Function The SMC function.
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@param Arg1 Argument/result.
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@param Arg2 Argument/result.
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@param Arg3 Result.
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@return The SMC error code.
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**/
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UINTN
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ArmCallSmc2 (
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IN UINTN Function,
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IN OUT UINTN *Arg1 OPTIONAL,
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IN OUT UINTN *Arg2 OPTIONAL,
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OUT UINTN *Arg3 OPTIONAL
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);
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/** Trigger an SMC call with 1 argument.
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@param Function The SMC function.
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@param Arg1 Argument/result.
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@param Arg2 Result.
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@param Arg3 Result.
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@return The SMC error code.
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**/
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UINTN
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ArmCallSmc1 (
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IN UINTN Function,
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IN OUT UINTN *Arg1 OPTIONAL,
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OUT UINTN *Arg2 OPTIONAL,
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OUT UINTN *Arg3 OPTIONAL
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);
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/** Trigger an SMC call with 0 arguments.
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@param Function The SMC function.
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@param Arg1 Result.
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@param Arg2 Result.
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@param Arg3 Result.
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@return The SMC error code.
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**/
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UINTN
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ArmCallSmc0 (
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IN UINTN Function,
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OUT UINTN *Arg1 OPTIONAL,
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OUT UINTN *Arg2 OPTIONAL,
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OUT UINTN *Arg3 OPTIONAL
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);
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#endif // ARM_SMC_LIB_H_
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