c8ec22a266
Contributed-under: TianoCore Contribution Agreement 1.0 Signed off by: Ravi Rangarajan <ravi.p.rangarajan@intel.com> Reviewed by: Maurice Ma <maurice.ma@intel.com> Reviewed by: Jiewen Yao <jiewen.yao@intel.com> Reviewed by: Giri Mudusuru <giri.p.mudusuru@intel.com> Reviewed by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15705 6f19259b-4bc3-4df7-8a09-765794883524
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/** @file
|
|
|
|
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
|
|
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.
|
|
|
|
**/
|
|
|
|
#ifndef _CACHE_LIB_H_
|
|
#define _CACHE_LIB_H_
|
|
|
|
//
|
|
// EFI_MEMORY_CACHE_TYPE
|
|
//
|
|
typedef INT32 EFI_MEMORY_CACHE_TYPE;
|
|
|
|
#define EFI_CACHE_UNCACHEABLE 0
|
|
#define EFI_CACHE_WRITECOMBINING 1
|
|
#define EFI_CACHE_WRITETHROUGH 4
|
|
#define EFI_CACHE_WRITEPROTECTED 5
|
|
#define EFI_CACHE_WRITEBACK 6
|
|
|
|
/**
|
|
Reset all the MTRRs to a known state.
|
|
|
|
@retval EFI_SUCCESS All MTRRs have been reset successfully.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
ResetCacheAttributes (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Given the memory range and cache type, programs the MTRRs.
|
|
|
|
@param[in] MemoryAddress Base Address of Memory to program MTRR.
|
|
@param[in] MemoryLength Length of Memory to program MTRR.
|
|
@param[in] MemoryCacheType Cache Type.
|
|
|
|
@retval EFI_SUCCESS Mtrr are set successfully.
|
|
@retval EFI_LOAD_ERROR No empty MTRRs to use.
|
|
@retval EFI_INVALID_PARAMETER The input parameter is not valid.
|
|
@retval others An error occurs when setting MTTR.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SetCacheAttributes (
|
|
IN EFI_PHYSICAL_ADDRESS MemoryAddress,
|
|
IN UINT64 MemoryLength,
|
|
IN EFI_MEMORY_CACHE_TYPE MemoryCacheType
|
|
);
|
|
|
|
#endif
|
|
|