ArmPkg/ArmV7Lib: Add support for Invalid Instruction Cache to Point of Unification

This patch adds support to invalidate Instruction Cache to the Point of Unification (PoU).

Signed-off-by: eugenecohen
Reviewed-by: oliviermartin



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13012 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.c

@@ -196,9 +196,8 @@ ArmV7DataCacheOperation (
   UINTN     SavedInterruptState;
 
   SavedInterruptState = ArmGetInterruptState ();
-  ArmDisableInterrupts();
+  ArmDisableInterrupts ();
   
-
   ArmV7AllDataCachesOperation (DataCacheOperation);
   
   ArmDrainWriteBuffer ();
@@ -208,6 +207,26 @@ ArmV7DataCacheOperation (
   }
 }
 
+
+VOID
+ArmV7PoUDataCacheOperation (
+  IN  ARM_V7_CACHE_OPERATION  DataCacheOperation
+  )
+{
+  UINTN     SavedInterruptState;
+
+  SavedInterruptState = ArmGetInterruptState ();
+  ArmDisableInterrupts ();
+  
+  ArmV7PerformPoUDataCacheOperation (DataCacheOperation);
+  
+  ArmDrainWriteBuffer ();
+  
+  if (SavedInterruptState) {
+    ArmEnableInterrupts ();
+  }
+}
+
 VOID
 EFIAPI
 ArmInvalidateDataCache (
@@ -235,3 +254,11 @@ ArmCleanDataCache (
   ArmV7DataCacheOperation (ArmCleanDataCacheEntryBySetWay);
 }
 
+VOID
+EFIAPI
+ArmCleanDataCacheToPoU (
+  VOID
+  )
+{
+  ArmV7PoUDataCacheOperation (ArmCleanDataCacheEntryBySetWay);
+}