diff options
| -rw-r--r-- | ArmPkg/ArmPkg.dec | 5 | ||||
| -rw-r--r-- | ArmPkg/Include/Library/ArmMonitorLib.h | 42 |
2 files changed, 47 insertions, 0 deletions
diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec index 99cb024..f17ba91 100644 --- a/ArmPkg/ArmPkg.dec +++ b/ArmPkg/ArmPkg.dec @@ -71,6 +71,11 @@ #
ArmSvcLib|Include/Library/ArmSvcLib.h
+ ## @libraryclass Provides a Monitor Call interface that will use the
+ # default conduit (HVC or SMC).
+ #
+ ArmMonitorLib|Include/Library/ArmMonitorLib.h
+
## @libraryclass Provides a default exception handler.
#
DefaultExceptionHandlerLib|Include/Library/DefaultExceptionHandlerLib.h
diff --git a/ArmPkg/Include/Library/ArmMonitorLib.h b/ArmPkg/Include/Library/ArmMonitorLib.h new file mode 100644 index 0000000..d6e13b6 --- /dev/null +++ b/ArmPkg/Include/Library/ArmMonitorLib.h @@ -0,0 +1,42 @@ +/** @file
+
+ Copyright (c) 2022, Arm Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef ARM_MONITOR_LIB_H_
+#define ARM_MONITOR_LIB_H_
+
+/** The size of the SMC arguments is different between AArch64 and AArch32.
+
+ The native size is used for the arguments.
+ It will be casted to either HVC or SMC args.
+*/
+typedef struct {
+ UINTN Arg0;
+ UINTN Arg1;
+ UINTN Arg2;
+ UINTN Arg3;
+ UINTN Arg4;
+ UINTN Arg5;
+ UINTN Arg6;
+ UINTN Arg7;
+} ARM_MONITOR_ARGS;
+
+/** 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
+ );
+
+#endif // ARM_MONITOR_LIB_H_
|