ArmPlatform/PrePi: Fixed PrePi for MP Cores platform and Global Variable region settings

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12638 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/PrePi/MainUniCore.c

@@ -22,6 +22,11 @@ PrimaryMain (
   IN  UINT64                    StartTimeStamp
   )
 {
+  DEBUG_CODE_BEGIN();
+    // On MPCore system, PeiMpCore.inf should be used instead of PeiUniCore.inf
+    ASSERT(ArmIsMpCore() == 0);
+  DEBUG_CODE_END();
+
   PrePiMain (UefiMemoryBase, StacksBase, GlobalVariableBase, StartTimeStamp);
 
   // We must never return