diff options
Diffstat (limited to 'ArmPkg/Library/ArmFfaLib/ArmFfaCommon.c')
| -rw-r--r-- | ArmPkg/Library/ArmFfaLib/ArmFfaCommon.c | 760 |
1 files changed, 760 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmFfaLib/ArmFfaCommon.c b/ArmPkg/Library/ArmFfaLib/ArmFfaCommon.c new file mode 100644 index 0000000000..4a7c3fbd67 --- /dev/null +++ b/ArmPkg/Library/ArmFfaLib/ArmFfaCommon.c @@ -0,0 +1,760 @@ +/** @file
+ Arm Ffa library common code.
+
+ Copyright (c) 2024, Arm Limited. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Glossary:
+ - FF-A - Firmware Framework for Arm A-profile
+
+ @par Reference(s):
+ - Arm Firmware Framework for Arm A-Profile [https://developer.arm.com/documentation/den0077/latest]
+
+**/
+#include <Uefi.h>
+#include <Pi/PiMultiPhase.h>
+
+#include <Library/ArmLib.h>
+#include <Library/ArmFfaLib.h>
+#include <Library/ArmSmcLib.h>
+#include <Library/ArmSvcLib.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+
+#include <IndustryStandard/ArmFfaSvc.h>
+#include <IndustryStandard/ArmFfaPartInfo.h>
+
+#include "ArmFfaCommon.h"
+
+BOOLEAN gFfaSupported;
+UINT16 gPartId;
+
+/**
+ Convert EFI_GUID to UUID format.
+ for example, If there is EFI_GUID named
+ "378daedc-f06b-4446-8314-40ab933c87a3",
+
+ EFI_GUID is saved in memory like:
+ dc ae 8d 37
+ 6b f0 46 44
+ 83 14 40 ab
+ 93 3c 87 a3
+
+ However, UUID should be saved like:
+ 37 8d ae dc
+ f0 6b 44 46
+ 83 14 40 ab
+ 93 3c 87 a3
+
+ FF-A and other software components (i.e. linux-kernel)
+ uses below format.
+
+ @param [in] Guid EFI_GUID
+ @param [out] Uuid Uuid
+
+**/
+STATIC
+VOID
+EFIAPI
+ConvertEfiGuidToUuid (
+ IN EFI_GUID *Guid,
+ OUT UINT64 *Uuid
+ )
+{
+ UINT32 *Data32;
+ UINT16 *Data16;
+
+ CopyGuid ((EFI_GUID *)Uuid, Guid);
+ Data32 = (UINT32 *)Uuid;
+ Data32[0] = SwapBytes32 (Data32[0]);
+ Data16 = (UINT16 *)&Data32[1];
+ Data16[0] = SwapBytes16 (Data16[0]);
+ Data16[1] = SwapBytes16 (Data16[1]);
+}
+
+/**
+ Convert EFI_STATUS to FFA return code.
+
+ @param [in] Status edk2 status code.
+
+ @retval ARM_FFA_RET_* return value correspond to EFI_STATUS.
+
+**/
+UINTN
+EFIAPI
+EfiStatusToFfaStatus (
+ IN EFI_STATUS Status
+ )
+{
+ switch (Status) {
+ case EFI_SUCCESS:
+ return ARM_FFA_RET_SUCCESS;
+ case EFI_INVALID_PARAMETER:
+ return ARM_FFA_RET_INVALID_PARAMETERS;
+ case EFI_OUT_OF_RESOURCES:
+ return ARM_FFA_RET_NO_MEMORY;
+ case EFI_NO_RESPONSE:
+ return ARM_FFA_RET_BUSY;
+ case EFI_INTERRUPT_PENDING:
+ return ARM_FFA_RET_INTERRUPTED;
+ case EFI_ACCESS_DENIED:
+ return ARM_FFA_RET_DENIED;
+ case EFI_ABORTED:
+ return ARM_FFA_RET_ABORTED;
+ case EFI_NOT_FOUND:
+ return ARM_FFA_RET_NODATA;
+ case EFI_NOT_READY:
+ return ARM_FFA_RET_NOT_READY;
+ default:
+ return ARM_FFA_RET_NOT_SUPPORTED;
+ }
+}
+
+/**
+ Convert FFA return code to EFI_STATUS.
+
+ @param [in] FfaStatus Ffa return Status
+
+ @retval EFI_STATUS return value correspond EFI_STATUS to FfaStatus
+
+**/
+EFI_STATUS
+EFIAPI
+FfaStatusToEfiStatus (
+ IN UINTN FfaStatus
+ )
+{
+ switch ((UINT32)FfaStatus) {
+ case ARM_FFA_RET_SUCCESS:
+ return EFI_SUCCESS;
+ case ARM_FFA_RET_INVALID_PARAMETERS:
+ return EFI_INVALID_PARAMETER;
+ case ARM_FFA_RET_NO_MEMORY:
+ return EFI_OUT_OF_RESOURCES;
+ case ARM_FFA_RET_BUSY:
+ return EFI_NO_RESPONSE;
+ case ARM_FFA_RET_INTERRUPTED:
+ return EFI_INTERRUPT_PENDING;
+ case ARM_FFA_RET_DENIED:
+ return EFI_ACCESS_DENIED;
+ case ARM_FFA_RET_ABORTED:
+ return EFI_ABORTED;
+ case ARM_FFA_RET_NODATA:
+ return EFI_NOT_FOUND;
+ case ARM_FFA_RET_NOT_READY:
+ return EFI_NOT_READY;
+ default:
+ return EFI_UNSUPPORTED;
+ }
+}
+
+/**
+ Convert FfArgs to EFI_STATUS.
+
+ @param [in] FfaArgs Ffa arguments
+
+ @retval EFI_STATUS return value correspond EFI_STATUS to FfaStatus
+
+**/
+EFI_STATUS
+EFIAPI
+FfaArgsToEfiStatus (
+ IN ARM_FFA_ARGS *FfaArgs
+ )
+{
+ UINT32 FfaStatus;
+
+ if (FfaArgs == NULL) {
+ FfaStatus = ARM_FFA_RET_INVALID_PARAMETERS;
+ } else if (IS_FID_FFA_ERROR (FfaArgs->Arg0)) {
+ /*
+ * In case of error, the Arg0 will be set to the fid FFA_ERROR.
+ * and Error code is set in Arg2.
+ */
+ FfaStatus = FfaArgs->Arg2;
+ } else if (FfaArgs->Arg0 == ARM_FFA_RET_NOT_SUPPORTED) {
+ /*
+ * If Some FF-A ABI doesn't support, it sets ARM_FFA_RET_NOT_SUPPORTED
+ * in Arg0 and other register has no meaning.
+ * In this case, set Arg2 as ARM_FFA_RET_NOT_SUPPORTED so that
+ * FfaStatusToEfiStatus (FfaARgs.Arg2) returns proper EFI_STATUS.
+ */
+ FfaStatus = ARM_FFA_RET_NOT_SUPPORTED;
+ } else if (FfaArgs->Arg0 == ARM_FID_FFA_INTERRUPT) {
+ FfaStatus = ARM_FFA_RET_INTERRUPTED;
+ } else {
+ FfaStatus = ARM_FFA_RET_SUCCESS;
+ }
+
+ return FfaStatusToEfiStatus (FfaStatus);
+}
+
+/**
+ Trigger FF-A ABI call according to PcdFfaLibConduitSmc.
+
+ @param [in, out] FfaArgs Ffa arguments
+
+**/
+VOID
+EFIAPI
+ArmCallFfa (
+ IN OUT ARM_FFA_ARGS *FfaArgs
+ )
+{
+ if (PcdGetBool (PcdFfaLibConduitSmc)) {
+ ArmCallSmc ((ARM_SMC_ARGS *)FfaArgs);
+ } else {
+ ArmCallSvc ((ARM_SVC_ARGS *)FfaArgs);
+ }
+}
+
+/**
+ Check FF-A support or not.
+
+ @retval TRUE Supported
+ @retval FALSE Not supported
+
+**/
+BOOLEAN
+EFIAPI
+IsFfaSupported (
+ IN VOID
+ )
+{
+ return gFfaSupported;
+}
+
+/**
+ Get FF-A version.
+
+ @param [in] RequestMajorVersion Minimal request major version
+ @param [in] RequestMinorVersion Minimal request minor version
+ @param [out] CurrentMajorVersion Current major version
+ @param [out] CurrentMinorVersion Current minor version
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibGetVersion (
+ IN UINT16 RequestMajorVersion,
+ IN UINT16 RequestMinorVersion,
+ OUT UINT16 *CurrentMajorVersion,
+ OUT UINT16 *CurrentMinorVersion
+ )
+{
+ EFI_STATUS Status;
+ ARM_FFA_ARGS FfaArgs;
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_VERSION;
+ FfaArgs.Arg1 = ARM_FFA_CREATE_VERSION (
+ RequestMajorVersion,
+ RequestMinorVersion
+ );
+
+ ArmCallFfa (&FfaArgs);
+
+ Status = FfaArgsToEfiStatus (&FfaArgs);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (CurrentMajorVersion != NULL) {
+ *CurrentMajorVersion = ARM_FFA_MAJOR_VERSION_GET (FfaArgs.Arg0);
+ }
+
+ if (CurrentMinorVersion != NULL) {
+ *CurrentMinorVersion = ARM_FFA_MINOR_VERSION_GET (FfaArgs.Arg0);
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Get FF-A features.
+
+ @param [in] Id Feature id or function id
+ @param [in] InputProperties Input properties according to Id
+ @param [out] Property1 First property.
+ @param [out] Property2 Second property.
+
+ @retval EFI_SUCCESS
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibGetFeatures (
+ IN UINT32 Id,
+ IN UINT32 InputProperties,
+ OUT UINTN *Property1,
+ OUT UINTN *Property2
+ )
+{
+ EFI_STATUS Status;
+ ARM_FFA_ARGS FfaArgs;
+
+ if ((Property1 == NULL) || (Property2 == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Property1 = 0x00;
+ *Property2 = 0x00;
+
+ switch (Id) {
+ case ARM_FID_FFA_RXTX_MAP_AARCH32:
+ case ARM_FID_FFA_RXTX_MAP_AARCH64:
+ if ((InputProperties != FFA_RXTX_MAP_INPUT_PROPERTY_DEFAULT)) {
+ DEBUG ((DEBUG_ERROR, "%a: Invalid Parameter for FunctionId: 0x%x", __func__, Id));
+ return EFI_INVALID_PARAMETER;
+ }
+
+ break;
+ }
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+ FfaArgs.Arg0 = ARM_FID_FFA_FEATURES;
+ FfaArgs.Arg1 = Id;
+ FfaArgs.Arg2 = InputProperties;
+
+ ArmCallFfa (&FfaArgs);
+
+ Status = FfaArgsToEfiStatus (&FfaArgs);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ switch (Id) {
+ case ARM_FID_FFA_RXTX_MAP_AARCH32:
+ case ARM_FID_FFA_RXTX_MAP_AARCH64:
+ case ARM_FFA_FEATURE_ID_NOTIFICATION_PENDING_INTERRUPT:
+ case ARM_FFA_FEATURE_ID_SCHEDULE_RECEIVER_INTERRUPT:
+ case ARM_FFA_FEATURE_ID_MANAGED_EXIT_INTERRUPT:
+ *Property1 = FfaArgs.Arg2;
+ break;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Acquire ownership of the Rx buffer.
+
+ @param [in] PartId Partition Id
+
+ @retval EFI_SUCCESS
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibRxAcquire (
+ IN UINT16 PartId
+ )
+{
+ ARM_FFA_ARGS FfaArgs;
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_RX_ACQUIRE;
+ FfaArgs.Arg1 = PartId;
+
+ ArmCallFfa (&FfaArgs);
+
+ return FfaArgsToEfiStatus (&FfaArgs);
+}
+
+/**
+ Release ownership of the Rx buffer.
+
+ @param [in] PartId Partition Id
+
+ @retval EFI_SUCCESS
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibRxRelease (
+ IN UINT16 PartId
+ )
+{
+ ARM_FFA_ARGS FfaArgs;
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_RX_RELEASE;
+ FfaArgs.Arg1 = PartId;
+
+ ArmCallFfa (&FfaArgs);
+
+ return FfaArgsToEfiStatus (&FfaArgs);
+}
+
+/**
+ Get partition or VM id.
+
+ @param [out] PartId Partition id
+
+ @retval EFI_SUCCESS
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibPartitionIdGet (
+ OUT UINT16 *PartId
+ )
+{
+ EFI_STATUS Status;
+ ARM_FFA_ARGS FfaArgs;
+
+ if (PartId == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_ID_GET;
+
+ ArmCallFfa (&FfaArgs);
+
+ Status = FfaArgsToEfiStatus (&FfaArgs);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "%a: Failed to get partition id. Status: %r\n",
+ __func__,
+ Status
+ ));
+ return Status;
+ }
+
+ *PartId = (FfaArgs.Arg2 >> ARM_FFA_DEST_EP_SHIFT) & ARM_FFA_PARTITION_ID_MASK;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Get spmc or spmd partition id.
+
+ @param [out] SpmPartId spmc/spmd partition id
+
+ @retval EFI_SUCCESS
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibSpmIdGet (
+ OUT UINT16 *SpmPartId
+ )
+{
+ EFI_STATUS Status;
+ ARM_FFA_ARGS FfaArgs;
+
+ if (SpmPartId == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_SPM_ID_GET;
+
+ ArmCallFfa (&FfaArgs);
+
+ Status = FfaArgsToEfiStatus (&FfaArgs);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "%a: Failed to get partition id. Status: %r\n",
+ __func__,
+ Status
+ ));
+ return Status;
+ }
+
+ *SpmPartId = (FfaArgs.Arg2 >> ARM_FFA_DEST_EP_SHIFT) & ARM_FFA_PARTITION_ID_MASK;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Get Partition info.
+ If This function is called to get partition descriptors
+ (Flags isn't set with FFA_PART_INFO_FLAG_TYPE_COUNT),
+ It should call ArmFfaLibRxRelease() to release RX buffer.
+
+ @param [in] ServiceGuid Service guid.
+ @param [in] Flags If this function called to get partition desc
+ and get successfully,
+ Caller should release RX buffer by calling
+ ArmFfaLibRxRelease
+ @param [out] Count Number of partition or partition descriptor
+ @param [out] Size Size of Partition Info structure in Rx Buffer
+
+ @retval EFI_SUCCESS
+ @retval Others Error
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibPartitionInfoGet (
+ IN EFI_GUID *ServiceGuid,
+ IN UINT32 Flags,
+ OUT UINT32 *Count,
+ OUT UINT32 *Size OPTIONAL
+ )
+{
+ EFI_STATUS Status;
+ ARM_FFA_ARGS FfaArgs;
+ UINT64 Uuid[2];
+ UINT32 *SmcUuid;
+
+ if (Count == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((((Flags >> FFA_PART_INFO_FLAG_TYPE_SHIFT) & FFA_PART_INFO_FLAG_TYPE_MASK) !=
+ FFA_PART_INFO_FLAG_TYPE_COUNT) && (Size == NULL))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (ServiceGuid != NULL) {
+ ConvertEfiGuidToUuid (ServiceGuid, Uuid);
+ } else {
+ ZeroMem (Uuid, sizeof (Uuid));
+ }
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+ SmcUuid = (UINT32 *)Uuid;
+
+ FfaArgs.Arg0 = ARM_FID_FFA_PARTITION_INFO_GET;
+ FfaArgs.Arg1 = SmcUuid[0];
+ FfaArgs.Arg2 = SmcUuid[1];
+ FfaArgs.Arg3 = SmcUuid[2];
+ FfaArgs.Arg4 = SmcUuid[3];
+ FfaArgs.Arg5 = Flags;
+
+ ArmCallFfa (&FfaArgs);
+
+ Status = FfaArgsToEfiStatus (&FfaArgs);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "%a: Failed to get partition information of %g. Status: %r\n",
+ __func__,
+ (ServiceGuid != NULL) ? ServiceGuid : (EFI_GUID *)Uuid,
+ Status
+ ));
+ goto ErrorHandler;
+ }
+
+ *Count = FfaArgs.Arg2;
+ if (Size != NULL) {
+ *Size = FfaArgs.Arg3;
+ }
+
+ return EFI_SUCCESS;
+
+ErrorHandler:
+ *Count = 0;
+ if (Size != NULL) {
+ *Size = 0;
+ }
+
+ return Status;
+}
+
+/**
+ Restore the context which was interrupted with FFA_INTERRUPT (EFI_INTERRUPT_PENDING).
+
+ @param [in] PartId Partition id
+ @param [in] CpuNumber Cpu number in partition
+
+ @retval EFI_SUCCESS
+ @retval Other Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibRun (
+ IN UINT16 PartId,
+ IN UINT16 CpuNumber
+ )
+{
+ ARM_FFA_ARGS FfaArgs;
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_RUN;
+ FfaArgs.Arg1 = PACK_PARTITION_ID_INFO (PartId, CpuNumber);
+
+ ArmCallFfa (&FfaArgs);
+
+ return FfaArgsToEfiStatus (&FfaArgs);
+}
+
+/**
+ Send direct message request version 1.
+
+ @param [in] DestPartId Dest partition id
+ @param [in] Flags Message flags
+ @param [in, out] ImpDefArgs Implemented defined arguments and
+ Implemented defined return values
+
+ @retval EFI_SUCCESS Success
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibMsgSendDirectReq (
+ IN UINT16 DestPartId,
+ IN UINT32 Flags,
+ IN OUT DIRECT_MSG_ARGS *ImpDefArgs
+ )
+{
+ EFI_STATUS Status;
+ ARM_FFA_ARGS FfaArgs;
+
+ if ((DestPartId == gPartId) || (ImpDefArgs == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_MSG_SEND_DIRECT_REQ;
+ FfaArgs.Arg1 = PACK_PARTITION_ID_INFO (gPartId, DestPartId);
+ FfaArgs.Arg2 = Flags;
+ FfaArgs.Arg3 = ImpDefArgs->Arg0;
+ FfaArgs.Arg4 = ImpDefArgs->Arg1;
+ FfaArgs.Arg5 = ImpDefArgs->Arg2;
+ FfaArgs.Arg6 = ImpDefArgs->Arg3;
+ FfaArgs.Arg7 = ImpDefArgs->Arg4;
+
+ ArmCallFfa (&FfaArgs);
+
+ Status = FfaArgsToEfiStatus (&FfaArgs);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ ImpDefArgs->Arg0 = FfaArgs.Arg3;
+ ImpDefArgs->Arg1 = FfaArgs.Arg4;
+ ImpDefArgs->Arg2 = FfaArgs.Arg5;
+ ImpDefArgs->Arg3 = FfaArgs.Arg6;
+ ImpDefArgs->Arg4 = FfaArgs.Arg7;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Send direct message request version 2.
+
+ @param [in] DestPartId Dest partition id
+ @param [in] ServiceGuid Service guid
+ @param [in, out] ImpDefArgs Implemented defined arguments and
+ Implemented defined return values
+
+ @retval EFI_SUCCESS Success
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibMsgSendDirectReq2 (
+ IN UINT16 DestPartId,
+ IN EFI_GUID *ServiceGuid,
+ IN OUT DIRECT_MSG_ARGS *ImpDefArgs
+ )
+{
+ EFI_STATUS Status;
+ UINT64 Uuid[2];
+ ARM_FFA_ARGS FfaArgs;
+
+ /*
+ * Direct message request 2 is only supported on AArch64.
+ */
+ if (sizeof (UINTN) != sizeof (UINT64)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if ((DestPartId == gPartId) || (ImpDefArgs == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (ServiceGuid != NULL) {
+ ConvertEfiGuidToUuid (ServiceGuid, Uuid);
+ } else {
+ ZeroMem (Uuid, sizeof (Uuid));
+ }
+
+ ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
+
+ FfaArgs.Arg0 = ARM_FID_FFA_MSG_SEND_DIRECT_REQ2;
+ FfaArgs.Arg1 = PACK_PARTITION_ID_INFO (gPartId, DestPartId);
+ FfaArgs.Arg2 = Uuid[0];
+ FfaArgs.Arg3 = Uuid[1];
+ FfaArgs.Arg4 = ImpDefArgs->Arg0;
+ FfaArgs.Arg5 = ImpDefArgs->Arg1;
+ FfaArgs.Arg6 = ImpDefArgs->Arg2;
+ FfaArgs.Arg7 = ImpDefArgs->Arg3;
+
+ ArmCallFfa (&FfaArgs);
+
+ Status = FfaArgsToEfiStatus (&FfaArgs);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ ImpDefArgs->Arg0 = FfaArgs.Arg4;
+ ImpDefArgs->Arg1 = FfaArgs.Arg5;
+ ImpDefArgs->Arg2 = FfaArgs.Arg6;
+ ImpDefArgs->Arg3 = FfaArgs.Arg7;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Common ArmFfaLib init.
+
+ @retval EFI_SUCCESS Success
+ @retval EFI_UNSUPPORTED FF-A isn't supported
+ @retval Others Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibCommonInit (
+ IN VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT16 CurrentMajorVersion;
+ UINT16 CurrentMinorVersion;
+
+ gFfaSupported = FALSE;
+
+ Status = ArmFfaLibGetVersion (
+ ARM_FFA_MAJOR_VERSION,
+ ARM_FFA_MINOR_VERSION,
+ &CurrentMajorVersion,
+ &CurrentMinorVersion
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ Status = ArmFfaLibPartitionIdGet (&gPartId);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ gFfaSupported = TRUE;
+
+ return EFI_SUCCESS;
+}
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