Revision: 14527
http://sourceforge.net/p/edk2/code/14527
Author: oliviermartin
Date: 2013-08-06 17:41:53 +0000 (Tue, 06 Aug 2013)
Log Message:
-----------
ArmPlatformPkg: PrePei Cache disable and invalidate.
- Disable data cache on all cores.
- Do not clean caches as there might be junk in them, invalidate only.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <[email protected]>
Modified Paths:
--------------
trunk/edk2/ArmPlatformPkg/PrePeiCore/PrePeiCore.c
trunk/edk2/ArmPlatformPkg/PrePi/PrePi.c
Modified: trunk/edk2/ArmPlatformPkg/PrePeiCore/PrePeiCore.c
===================================================================
--- trunk/edk2/ArmPlatformPkg/PrePeiCore/PrePeiCore.c 2013-08-06 12:11:13 UTC
(rev 14526)
+++ trunk/edk2/ArmPlatformPkg/PrePeiCore/PrePeiCore.c 2013-08-06 17:41:53 UTC
(rev 14527)
@@ -1,16 +1,16 @@
/** @file
* Main file supporting the transition to PEI Core in Normal World for
Versatile Express
*
-* Copyright (c) 2011-2012, ARM Limited. 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
+* Copyright (c) 2011-2013, ARM Limited. All rights reserved.
*
-* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
IMPLIED.
+* 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.
+*
**/
#include <Library/BaseLib.h>
@@ -71,14 +71,13 @@
IN EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint
)
{
- //Clean Data cache
- ArmCleanInvalidateDataCache ();
-
- //Invalidate instruction cache
+ // Data Cache enabled on Primary core when MMU is enabled.
+ ArmDisableDataCache ();
+ // Invalidate Data cache
+ ArmInvalidateDataCache ();
+ // Invalidate instruction cache
ArmInvalidateInstructionCache ();
-
- // Enable Instruction & Data caches
- ArmEnableDataCache ();
+ // Enable Instruction Caches on all cores.
ArmEnableInstructionCache ();
//
Modified: trunk/edk2/ArmPlatformPkg/PrePi/PrePi.c
===================================================================
--- trunk/edk2/ArmPlatformPkg/PrePi/PrePi.c 2013-08-06 12:11:13 UTC (rev
14526)
+++ trunk/edk2/ArmPlatformPkg/PrePi/PrePi.c 2013-08-06 17:41:53 UTC (rev
14527)
@@ -1,6 +1,6 @@
/** @file
*
-* Copyright (c) 2011-2012, ARM Limited. All rights reserved.
+* Copyright (c) 2011-2013, ARM Limited. All rights reserved.
*
* This program and the accompanying materials
* are licensed and made available under the terms and conditions of the BSD
License
@@ -222,16 +222,13 @@
StartTimeStamp = 0;
}
- // Clean Data cache
- ArmCleanInvalidateDataCache ();
-
+ // Data Cache enabled on Primary core when MMU is enabled.
+ ArmDisableDataCache ();
+ // Invalidate Data cache
+ ArmInvalidateDataCache ();
// Invalidate instruction cache
ArmInvalidateInstructionCache ();
-
- //TODO:Drain Write Buffer
-
- // Enable Instruction & Data caches
- ArmEnableDataCache ();
+ // Enable Instruction Caches on all cores.
ArmEnableInstructionCache ();
// Define the Global Variable region when we are not running in XIP
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