From 4d303524451d87d411c972736015138a8a4f03f6 Mon Sep 17 00:00:00 2001 From: Rebecca Cran Date: Mon, 13 Dec 2021 11:30:55 -0700 Subject: ArmPkg: Add SMC helper functions 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 Reviewed-by: Sami Mujawar --- ArmPkg/Include/Library/ArmSmcLib.h | 73 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) (limited to 'ArmPkg/Include') diff --git a/ArmPkg/Include/Library/ArmSmcLib.h b/ArmPkg/Include/Library/ArmSmcLib.h index f5b45f0..beef017 100644 --- a/ArmPkg/Include/Library/ArmSmcLib.h +++ b/ArmPkg/Include/Library/ArmSmcLib.h @@ -1,5 +1,6 @@ /** @file * +* Copyright (c) 2021, NUVIA Inc. All rights reserved.
* 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_ -- cgit v1.1