X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdeModulePkg%2FUniversal%2FVariable%2FRuntimeDxe%2FVariableSmm.c;h=a80948bce8279d25e526749aed855bd4a172d708;hb=2c4b18e09590e50c95b95fd485144d00b3b7f39f;hp=1ffa74e6cc57c5048ec7d937136c5d77532a9441;hpb=164a9b6752a63fca7d91ca0dcf84c0b4aa7a243d;p=mirror_edk2.git

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
index 1ffa74e6cc..a80948bce8 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
@@ -792,6 +792,7 @@ SmmFtwNotificationEvent (
   EFI_SMM_FIRMWARE_VOLUME_BLOCK_PROTOCOL  *FvbProtocol;
   EFI_SMM_FAULT_TOLERANT_WRITE_PROTOCOL   *FtwProtocol;
   EFI_PHYSICAL_ADDRESS                    NvStorageVariableBase;
+  UINTN                                   FtwMaxBlockSize;
   
   if (mVariableModuleGlobal->FvbInstance != NULL) {
     return EFI_SUCCESS;
@@ -805,6 +806,11 @@ SmmFtwNotificationEvent (
     return Status;
   }
 
+  Status = FtwProtocol->GetMaxBlockSize (FtwProtocol, &FtwMaxBlockSize);
+  if (!EFI_ERROR (Status)) {
+    ASSERT (PcdGet32 (PcdFlashNvStorageVariableSize) <= FtwMaxBlockSize);
+  }
+
   //
   // Find the proper FVB protocol for variable.
   //