1 files changed, 77 insertions, 0 deletions
diff --git a/Core/CPU/IPF/SwitchToCacheMode.c b/Core/CPU/IPF/SwitchToCacheMode.c
new file mode 100644
index 0000000..9f938d4
--- /dev/null
+++ b/Core/CPU/IPF/SwitchToCacheMode.c
@@ -0,0 +1,77 @@
+/*++
+
+Copyright (c) 2004, Intel Corporation                                                         
+All rights reserved. This program and the accompanying materials                          
+are licensed and made available under the terms and conditions of the BSD License         
+which accompanies this distribution.  The full text of the license may be found at        
+http://opensource.org/licenses/bsd-license.php                                            
+                                                                                          
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+
+Module Name:
+
+  SwitchToCacheMode.c
+
+Abstract:
+
+  Ipf CAR specific function used to switch to cache mode for the later memory access
+
+Revision History
+
+--*/
+#include "Tiano.h"
+#include "PeiCore.h"
+#include "IpfCpuCore.i"
+
+extern 
+SAL_RETURN_REGS
+GetHandOffStatus (
+  VOID
+  );
+
+VOID
+SwitchToCacheMode (
+  IN PEI_CORE_INSTANCE           *CoreData
+  )
+/*++
+
+Routine Description:
+
+ Switch the PHIT pointers to cache mode after InstallPeiMemory in CAR.
+
+Arguments:
+
+  CoreData   - The PEI core Private Data
+
+Returns:
+
+--*/
+{
+  EFI_HOB_HANDOFF_INFO_TABLE    *Phit;
+
+  if (CoreData == NULL) {
+    //
+    // the first call with CoreData as NULL.
+    //
+    return;
+  }
+  
+  if ((GetHandOffStatus().r10 & 0xFF) == RecoveryFn) {
+    CoreData->StackBase = CoreData->StackBase &  CACHE_MODE_ADDRESS_MASK;
+    CoreData->HobList.Raw = (UINT8 *)((UINTN)CoreData->HobList.Raw & CACHE_MODE_ADDRESS_MASK);
+
+    //
+    // Change the PHIT pointer value to cache mode
+    //
+    Phit = CoreData->HobList.HandoffInformationTable;
+
+    Phit->EfiMemoryTop        = Phit->EfiMemoryTop & CACHE_MODE_ADDRESS_MASK;
+    Phit->EfiFreeMemoryTop    = Phit->EfiFreeMemoryTop & CACHE_MODE_ADDRESS_MASK;
+    Phit->EfiMemoryBottom     = Phit->EfiMemoryBottom  & CACHE_MODE_ADDRESS_MASK;
+    Phit->EfiFreeMemoryBottom = Phit->EfiFreeMemoryBottom & CACHE_MODE_ADDRESS_MASK;
+    Phit->EfiEndOfHobList     = Phit->EfiEndOfHobList & CACHE_MODE_ADDRESS_MASK;
+  }
+
+  return;
+}
+\ No newline at end of file