Update entry point library for Arm to use the new architecture independent
StandaloneMmCpu driver.

Signed-off-by: Tuan Phan <tp...@ventanamicro.com>
Reviewed-by: levi.yun <yeoreum....@arm.com>
---
 .../Library/Arm/StandaloneMmCoreEntryPoint.h  | 17 +----
 .../Arm/CreateHobList.c                       | 43 ++++++------
 .../Arm/StandaloneMmCoreEntryPoint.c          | 69 +++++++++++--------
 .../StandaloneMmCoreEntryPoint.inf            |  2 +-
 4 files changed, 67 insertions(+), 64 deletions(-)

diff --git a/StandaloneMmPkg/Include/Library/Arm/StandaloneMmCoreEntryPoint.h 
b/StandaloneMmPkg/Include/Library/Arm/StandaloneMmCoreEntryPoint.h
index 41bf0f132b4f..dbb81610ff8e 100644
--- a/StandaloneMmPkg/Include/Library/Arm/StandaloneMmCoreEntryPoint.h
+++ b/StandaloneMmPkg/Include/Library/Arm/StandaloneMmCoreEntryPoint.h
@@ -10,6 +10,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #ifndef __STANDALONEMMCORE_ENTRY_POINT_H__
 #define __STANDALONEMMCORE_ENTRY_POINT_H__
 
+#include <StandaloneMmCpu.h>
 #include <Library/PeCoffLib.h>
 #include <Library/FvLib.h>
 
@@ -47,18 +48,6 @@ typedef struct {
   EFI_SECURE_PARTITION_CPU_INFO    *CpuInfo;
 } EFI_SECURE_PARTITION_BOOT_INFO;
 
-typedef
-EFI_STATUS
-(*PI_MM_ARM_TF_CPU_DRIVER_ENTRYPOINT) (
-  IN UINTN  EventId,
-  IN UINTN  CpuNumber,
-  IN UINTN  NsCommBufferAddr
-  );
-
-typedef struct {
-  PI_MM_ARM_TF_CPU_DRIVER_ENTRYPOINT    *ArmTfCpuDriverEpPtr;
-} ARM_TF_CPU_DRIVER_EP_DESCRIPTOR;
-
 typedef RETURN_STATUS (*REGION_PERMISSION_UPDATE_FUNC) (
   IN  EFI_PHYSICAL_ADDRESS  BaseAddress,
   IN  UINT64                Length
@@ -145,8 +134,8 @@ LocateStandaloneMmCorePeCoffData (
 VOID *
 EFIAPI
 CreateHobListFromBootInfo (
-  IN  OUT  PI_MM_ARM_TF_CPU_DRIVER_ENTRYPOINT  *CpuDriverEntryPoint,
-  IN       EFI_SECURE_PARTITION_BOOT_INFO      *PayloadBootInfo
+  IN  OUT  PI_MM_CPU_DRIVER_ENTRYPOINT     *CpuDriverEntryPoint,
+  IN       EFI_SECURE_PARTITION_BOOT_INFO  *PayloadBootInfo
   );
 
 /**
diff --git 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/CreateHobList.c 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/CreateHobList.c
index 2ac2d354f06a..80ed532352af 100644
--- a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/CreateHobList.c
+++ b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/CreateHobList.c
@@ -13,6 +13,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <Guid/MmramMemoryReserve.h>
 #include <Guid/MpInformation.h>
 
+#include <StandaloneMmCpu.h>
 #include <Library/Arm/StandaloneMmCoreEntryPoint.h>
 #include <Library/ArmMmuLib.h>
 #include <Library/ArmSvcLib.h>
@@ -39,7 +40,7 @@ extern EFI_GUID  gEfiStandaloneMmNonSecureBufferGuid;
 // GUID to identify HOB where the entry point of the CPU driver will be
 // populated to allow this entry point driver to invoke it upon receipt of an
 // event
-extern EFI_GUID  gEfiArmTfCpuDriverEpDescriptorGuid;
+extern EFI_GUID  gEfiMmCpuDriverEpDescriptorGuid;
 
 /**
   Use the boot information passed by privileged firmware to populate a HOB list
@@ -52,22 +53,22 @@ extern EFI_GUID  gEfiArmTfCpuDriverEpDescriptorGuid;
 **/
 VOID *
 CreateHobListFromBootInfo (
-  IN  OUT  PI_MM_ARM_TF_CPU_DRIVER_ENTRYPOINT  *CpuDriverEntryPoint,
-  IN       EFI_SECURE_PARTITION_BOOT_INFO      *PayloadBootInfo
+  IN  OUT  PI_MM_CPU_DRIVER_ENTRYPOINT     *CpuDriverEntryPoint,
+  IN       EFI_SECURE_PARTITION_BOOT_INFO  *PayloadBootInfo
   )
 {
-  EFI_HOB_HANDOFF_INFO_TABLE       *HobStart;
-  EFI_RESOURCE_ATTRIBUTE_TYPE      Attributes;
-  UINT32                           Index;
-  UINT32                           BufferSize;
-  UINT32                           Flags;
-  EFI_MMRAM_HOB_DESCRIPTOR_BLOCK   *MmramRangesHob;
-  EFI_MMRAM_DESCRIPTOR             *MmramRanges;
-  EFI_MMRAM_DESCRIPTOR             *NsCommBufMmramRange;
-  MP_INFORMATION_HOB_DATA          *MpInformationHobData;
-  EFI_PROCESSOR_INFORMATION        *ProcInfoBuffer;
-  EFI_SECURE_PARTITION_CPU_INFO    *CpuInfo;
-  ARM_TF_CPU_DRIVER_EP_DESCRIPTOR  *CpuDriverEntryPointDesc;
+  EFI_HOB_HANDOFF_INFO_TABLE      *HobStart;
+  EFI_RESOURCE_ATTRIBUTE_TYPE     Attributes;
+  UINT32                          Index;
+  UINT32                          BufferSize;
+  UINT32                          Flags;
+  EFI_MMRAM_HOB_DESCRIPTOR_BLOCK  *MmramRangesHob;
+  EFI_MMRAM_DESCRIPTOR            *MmramRanges;
+  EFI_MMRAM_DESCRIPTOR            *NsCommBufMmramRange;
+  MP_INFORMATION_HOB_DATA         *MpInformationHobData;
+  EFI_PROCESSOR_INFORMATION       *ProcInfoBuffer;
+  EFI_SECURE_PARTITION_CPU_INFO   *CpuInfo;
+  MM_CPU_DRIVER_EP_DESCRIPTOR     *CpuDriverEntryPointDesc;
 
   // Create a hoblist with a PHIT and EOH
   HobStart = HobConstructor (
@@ -144,13 +145,13 @@ CreateHobListFromBootInfo (
 
   // Create a Guided HOB to enable the ARM TF CPU driver to share its entry
   // point and populate it with the address of the shared buffer
-  CpuDriverEntryPointDesc = (ARM_TF_CPU_DRIVER_EP_DESCRIPTOR *)BuildGuidHob (
-                                                                 
&gEfiArmTfCpuDriverEpDescriptorGuid,
-                                                                 sizeof 
(ARM_TF_CPU_DRIVER_EP_DESCRIPTOR)
-                                                                 );
+  CpuDriverEntryPointDesc = (MM_CPU_DRIVER_EP_DESCRIPTOR *)BuildGuidHob (
+                                                             
&gEfiMmCpuDriverEpDescriptorGuid,
+                                                             sizeof 
(MM_CPU_DRIVER_EP_DESCRIPTOR)
+                                                             );
 
-  *CpuDriverEntryPoint                         = NULL;
-  CpuDriverEntryPointDesc->ArmTfCpuDriverEpPtr = CpuDriverEntryPoint;
+  *CpuDriverEntryPoint                      = NULL;
+  CpuDriverEntryPointDesc->MmCpuDriverEpPtr = CpuDriverEntryPoint;
 
   // Find the size of the GUIDed HOB with SRAM ranges
   BufferSize  = sizeof (EFI_MMRAM_HOB_DESCRIPTOR_BLOCK);
diff --git 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
index 96de10405af8..70306be2495e 100644
--- 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
+++ 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
@@ -15,6 +15,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <Guid/MmramMemoryReserve.h>
 #include <Guid/MpInformation.h>
 
+#include <StandaloneMmCpu.h>
 #include <Library/ArmSvcLib.h>
 #include <Library/DebugLib.h>
 #include <Library/HobLib.h>
@@ -41,7 +42,7 @@ STATIC CONST UINT32  mSpmMinorVerFfa = SPM_MINOR_VERSION_FFA;
 
 #define BOOT_PAYLOAD_VERSION  1
 
-PI_MM_ARM_TF_CPU_DRIVER_ENTRYPOINT  CpuDriverEntryPoint = NULL;
+PI_MM_CPU_DRIVER_ENTRYPOINT  CpuDriverEntryPoint = NULL;
 
 /**
   Retrieve a pointer to and print the boot information passed by privileged
@@ -140,34 +141,46 @@ DelegatedEventLoop (
     DEBUG ((DEBUG_INFO, "X6 :  0x%x\n", (UINT32)EventCompleteSvcArgs->Arg6));
     DEBUG ((DEBUG_INFO, "X7 :  0x%x\n", (UINT32)EventCompleteSvcArgs->Arg7));
 
-    FfaEnabled = FeaturePcdGet (PcdFfaEnable);
-    if (FfaEnabled) {
-      Status = CpuDriverEntryPoint (
-                 EventCompleteSvcArgs->Arg0,
-                 EventCompleteSvcArgs->Arg6,
-                 EventCompleteSvcArgs->Arg3
-                 );
-      if (EFI_ERROR (Status)) {
-        DEBUG ((
-          DEBUG_ERROR,
-          "Failed delegated event 0x%x, Status 0x%x\n",
-          EventCompleteSvcArgs->Arg3,
-          Status
-          ));
-      }
+    //
+    // ARM TF passes SMC FID of the MM_COMMUNICATE interface as the Event ID 
upon
+    // receipt of a synchronous MM request. Use the Event ID to distinguish
+    // between synchronous and asynchronous events.
+    //
+    if ((ARM_SMC_ID_MM_COMMUNICATE != (UINT32)EventCompleteSvcArgs->Arg0) &&
+        (ARM_SVC_ID_FFA_MSG_SEND_DIRECT_REQ != 
(UINT32)EventCompleteSvcArgs->Arg0))
+    {
+      DEBUG ((DEBUG_ERROR, "UnRecognized Event - 0x%x\n", 
(UINT32)EventCompleteSvcArgs->Arg0));
+      Status = EFI_INVALID_PARAMETER;
     } else {
-      Status = CpuDriverEntryPoint (
-                 EventCompleteSvcArgs->Arg0,
-                 EventCompleteSvcArgs->Arg3,
-                 EventCompleteSvcArgs->Arg1
-                 );
-      if (EFI_ERROR (Status)) {
-        DEBUG ((
-          DEBUG_ERROR,
-          "Failed delegated event 0x%x, Status 0x%x\n",
-          EventCompleteSvcArgs->Arg0,
-          Status
-          ));
+      FfaEnabled = FeaturePcdGet (PcdFfaEnable);
+      if (FfaEnabled) {
+        Status = CpuDriverEntryPoint (
+                   EventCompleteSvcArgs->Arg0,
+                   EventCompleteSvcArgs->Arg6,
+                   EventCompleteSvcArgs->Arg3
+                   );
+        if (EFI_ERROR (Status)) {
+          DEBUG ((
+            DEBUG_ERROR,
+            "Failed delegated event 0x%x, Status 0x%x\n",
+            EventCompleteSvcArgs->Arg3,
+            Status
+            ));
+        }
+      } else {
+        Status = CpuDriverEntryPoint (
+                   EventCompleteSvcArgs->Arg0,
+                   EventCompleteSvcArgs->Arg3,
+                   EventCompleteSvcArgs->Arg1
+                   );
+        if (EFI_ERROR (Status)) {
+          DEBUG ((
+            DEBUG_ERROR,
+            "Failed delegated event 0x%x, Status 0x%x\n",
+            EventCompleteSvcArgs->Arg0,
+            Status
+            ));
+        }
       }
     }
 
diff --git 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
index 75cfb98c0e75..d41d7630b614 100644
--- 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
+++ 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
@@ -49,7 +49,7 @@
   gMpInformationHobGuid
   gEfiMmPeiMmramMemoryReserveGuid
   gEfiStandaloneMmNonSecureBufferGuid
-  gEfiArmTfCpuDriverEpDescriptorGuid
+  gEfiMmCpuDriverEpDescriptorGuid
 
 [FeaturePcd.ARM, FeaturePcd.AARCH64]
   gArmTokenSpaceGuid.PcdFfaEnable
-- 
2.25.1



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