new file mode 100644
--- /dev/null
+++ b/packages/hal/mips/ref4955/current/include/plf_cache.h
@@ -0,0 +1,59 @@
+#ifndef CYGONCE_PLF_CACHE_H
+#define CYGONCE_PLF_CACHE_H
+
+//=============================================================================
+//
+//      plf_cache.h
+//
+//      HAL cache control API
+//
+//=============================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//=============================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   nickg
+// Contributors:        nickg
+// Date:        1998-02-17
+// Purpose:     Cache control API
+// Description: The macros defined here provide the HAL APIs for handling
+//              cache control operations.
+// Usage:
+//              #include <cyg/hal/plf_cache.h>
+//              ...
+//              
+//
+//####DESCRIPTIONEND####
+//
+//=============================================================================
+
+//=============================================================================
+
+// Nothing here at present.
+
+//-----------------------------------------------------------------------------
+#endif // ifndef CYGONCE_PLF_CACHE_H
+// End of plf_cache.h
+