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ArmPkg/ArmMonitorLib: Add ArmMonitorLib

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The ArmMonitorLib provides an abstract interface to issue
an HyperVisor Call (HVC) or System Monitor Call (SMC) depending
on the default conduit.
The PcdMonitorConduitHvc PCD allows to select the default conduit.

Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
This commit is contained in:
Pierre Gondois 2022-10-28 17:32:43 +02:00 committed by mergify[bot]
parent 9a50990cdb
commit aa0f522471
3 changed files with 64 additions and 0 deletions
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1
ArmPkg/ArmPkg.dsc
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@ -135,6 +135,7 @@
ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf
ArmPkg/Library/ArmHvcLib/ArmHvcLib.inf ArmPkg/Library/ArmHvcLib/ArmHvcLib.inf
ArmPkg/Library/ArmSvcLib/ArmSvcLib.inf ArmPkg/Library/ArmSvcLib/ArmSvcLib.inf
ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf
ArmPkg/Library/OpteeLib/OpteeLib.inf ArmPkg/Library/OpteeLib/OpteeLib.inf
ArmPkg/Filesystem/SemihostFs/SemihostFs.inf ArmPkg/Filesystem/SemihostFs/SemihostFs.inf

34
ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.c Normal file
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@ -0,0 +1,34 @@
/** @file
Arm Monitor Library.
Copyright (c) 2022, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/ArmHvcLib.h>
#include <Library/ArmMonitorLib.h>
#include <Library/ArmSmcLib.h>
#include <Library/PcdLib.h>
/** Monitor call.
An HyperVisor Call (HVC) or System Monitor Call (SMC) will be issued
depending on the default conduit. PcdMonitorConduitHvc determines the type
of the call: if true, do an HVC.
@param [in,out] Args Arguments for the HVC/SMC.
**/
VOID
EFIAPI
ArmMonitorCall (
IN OUT ARM_MONITOR_ARGS *Args
)
{
if (FeaturePcdGet (PcdMonitorConduitHvc)) {
ArmCallHvc ((ARM_HVC_ARGS *)Args);
} else {
ArmCallSmc ((ARM_SMC_ARGS *)Args);
}
}

29
ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf Normal file
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@ -0,0 +1,29 @@
## @file
# Arm Monitor Library
#
# Copyright (c) 2022, Arm Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
##
[Defines]
INF_VERSION = 1.29
BASE_NAME = ArmMonitorLib
FILE_GUID = F918DACB-FBB8-4CB6-A61D-08E75AF0E7CD
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = ArmMonitorLib
[Sources]
ArmMonitorLib.c
[Packages]
ArmPkg/ArmPkg.dec
MdePkg/MdePkg.dec
[LibraryClasses]
ArmHvcLib
ArmSmcLib
[Pcd]
gArmTokenSpaceGuid.PcdMonitorConduitHvc