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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 <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14527 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin 2013-08-06 17:41:53 +00:00 committed by oliviermartin
parent bb058bcdfb
commit 6dafb3030d
2 changed files with 20 additions and 24 deletions
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29
ArmPlatformPkg/PrePeiCore/PrePeiCore.c
View File

@ -1,15 +1,15 @@
/** @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.
*
**/
@ -71,14 +71,13 @@ CEntryPoint (
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 ();
//

15
ArmPlatformPkg/PrePi/PrePi.c
View File

@ -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 @@ CEntryPoint (
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