Index: FspInitPei/FspInitPeiV1.c
===================================================================
--- FspInitPei/FspInitPeiV1.c	(revision 17518)
+++ FspInitPei/FspInitPeiV1.c	(working copy)
@@ -47,7 +47,7 @@
   //
   BootMode = GetBootMode ();
 
-  GetStackInfo (BootMode, TRUE, &StackBase, &StackSize);
+  GetStackInfo (BootMode, TRUE, &StackSize, &StackBase);
   DEBUG ((DEBUG_INFO, "StackBase - 0x%x\n", StackBase));
   DEBUG ((DEBUG_INFO, "StackSize - 0x%x\n", StackSize));
   CallPeiCoreEntryPoint (
@@ -81,7 +81,7 @@
   PeiServicesGetBootMode (&BootMode);
   DEBUG ((DEBUG_INFO, "BootMode - 0x%x\n", BootMode));
 
-  GetStackInfo (BootMode, FALSE, &StackBase, &StackSize);
+  GetStackInfo (BootMode, FALSE, &StackSize, &StackBase);
   DEBUG ((DEBUG_INFO, "StackBase - 0x%x\n", StackBase));
   DEBUG ((DEBUG_INFO, "StackSize - 0x%x\n", StackSize));
 
Index: FspInitPei/FspInitPeiV2.c
===================================================================
--- FspInitPei/FspInitPeiV2.c	(revision 17518)
+++ FspInitPei/FspInitPeiV2.c	(working copy)
@@ -148,7 +148,7 @@
   PeiServicesGetBootMode (&BootMode);
   DEBUG ((DEBUG_INFO, "BootMode - 0x%x\n", BootMode));
 
-  GetStackInfo (BootMode, FALSE, &StackBase, &StackSize);
+  GetStackInfo (BootMode, FALSE, &StackSize, &StackBase);
   DEBUG ((DEBUG_INFO, "StackBase - 0x%x\n", StackBase));
   DEBUG ((DEBUG_INFO, "StackSize - 0x%x\n", StackSize));