diff options
| author | Pierre Gondois <Pierre.Gondois@arm.com> | 2022-10-28 17:32:43 +0200 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-11-06 16:32:28 +0000 |
| commit | aa0f522471b3832a8ced9d5ca22d0a7d9ea678a2 (patch) | |
| tree | 105189e5604b5b6d45fb9a1eccd45b345f4c627a /ArmPkg | |
| parent | 9a50990cdb5a8f3ecdcd343ac78c58aaf5b2dbc3 (diff) | |
| download | edk2-aa0f522471b3832a8ced9d5ca22d0a7d9ea678a2.tar.gz | |
ArmPkg/ArmMonitorLib: Add ArmMonitorLib
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>
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/ArmPkg.dsc | 1 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.c | 34 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf | 29 |
3 files changed, 64 insertions, 0 deletions
diff --git a/ArmPkg/ArmPkg.dsc b/ArmPkg/ArmPkg.dsc index 59fd8f295d..3afd212f47 100644 --- a/ArmPkg/ArmPkg.dsc +++ b/ArmPkg/ArmPkg.dsc @@ -135,6 +135,7 @@ ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf
ArmPkg/Library/ArmHvcLib/ArmHvcLib.inf
ArmPkg/Library/ArmSvcLib/ArmSvcLib.inf
+ ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf
ArmPkg/Library/OpteeLib/OpteeLib.inf
ArmPkg/Filesystem/SemihostFs/SemihostFs.inf
diff --git a/ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.c b/ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.c new file mode 100644 index 0000000000..741f5c6157 --- /dev/null +++ b/ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.c @@ -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);
+ }
+}
diff --git a/ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf b/ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf new file mode 100644 index 0000000000..f504cb80f1 --- /dev/null +++ b/ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf @@ -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
|