ArmPkg/StandaloneMmMmuLib: Introduce a SPM_MM status helper fucntion

Introduce a new helper function SpmMmStatusToEfiStatus() to convert
the SPM_MM status values to EFI_STATUS values.

Signed-off-by: Levi yun <yeoreum.yun@arm.com>

1 files changed, 28 insertions, 18 deletions

diff --git a/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c
index a30273c011..bfec689a0c 100644
--- a/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c
+++ b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c
@@ -25,6 +25,33 @@
 #include <Library/DebugLib.h>

 #include <Library/PcdLib.h>

 

+/**

+  Convert FFA return code to EFI_STATUS.

+

+  @param [in] SpmMmStatus           SPM_MM return code

+

+  @retval EFI_STATUS             correspond EFI_STATUS to SpmMmStatus

+**/

+STATIC

+EFI_STATUS

+SpmMmStatusToEfiStatus (

+  IN UINTN  SpmMmStatus

+  )

+{

+  switch (SpmMmStatus) {

+    case ARM_SPM_MM_RET_SUCCESS:

+      return EFI_SUCCESS;

+    case ARM_SPM_MM_RET_INVALID_PARAMS:

+      return EFI_INVALID_PARAMETER;

+    case ARM_SPM_MM_RET_DENIED:

+      return EFI_ACCESS_DENIED;

+    case ARM_SPM_MM_RET_NO_MEMORY:

+      return EFI_OUT_OF_RESOURCES;

+    default:

+      return EFI_UNSUPPORTED;

+  }

+}

+

 /** Send memory permission request to target.

 

   @param [in, out]  SvcArgs     Pointer to SVC arguments to send. On

@@ -106,24 +133,7 @@ SendMemoryPermissionRequest (
     // Bit 31 set means there is an error returned

     // See [1], Section 13.5.5.1 MM_SP_MEMORY_ATTRIBUTES_GET_AARCH64 and

     // Section 13.5.5.2 MM_SP_MEMORY_ATTRIBUTES_SET_AARCH64.

-    switch (*RetVal) {

-      case ARM_SPM_MM_RET_NOT_SUPPORTED:

-        return EFI_UNSUPPORTED;

-

-      case ARM_SPM_MM_RET_INVALID_PARAMS:

-        return EFI_INVALID_PARAMETER;

-

-      case ARM_SPM_MM_RET_DENIED:

-        return EFI_ACCESS_DENIED;

-

-      case ARM_SPM_MM_RET_NO_MEMORY:

-        return EFI_OUT_OF_RESOURCES;

-

-      default:

-        // Undefined error code received.

-        ASSERT (0);

-        return EFI_INVALID_PARAMETER;

-    }

+    SpmMmStatusToEfiStatus (*RetVal);

   }

 

   return EFI_SUCCESS;