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| author | Pierre Gondois <Pierre.Gondois@arm.com> | 2022-10-28 17:32:42 +0200 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-11-06 16:32:28 +0000 |
| commit | 9a50990cdb5a8f3ecdcd343ac78c58aaf5b2dbc3 (patch) | |
| tree | d01c877c898a85985ff17bc2b0e061b81df1adb8 | |
| parent | dcf8c790560c7344c80c157b4919d75aafc93dba (diff) | |
| download | edk2-9a50990cdb5a8f3ecdcd343ac78c58aaf5b2dbc3.tar.gz edk2-9a50990cdb5a8f3ecdcd343ac78c58aaf5b2dbc3.tar.bz2 edk2-9a50990cdb5a8f3ecdcd343ac78c58aaf5b2dbc3.zip | |
ArmPkg/ArmMonitorLib: Definition for ArmMonitorLib library class
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.
The new library relies on the ArmHvcLib and ArmSmcLib libraries.
A Null instance of these libraries can be used for the unused conduit.
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
| -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 99cb024d0f..f17ba913e6 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 0000000000..d6e13b61d6 --- /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_
|