Macros
#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

Typedefs
typedef INT32	EFI_MEMORY_CACHE_TYPE

Functions
EFI_STATUS EFIAPI	ResetCacheAttributes (VOID)

EFI_STATUS EFIAPI	SetCacheAttributes (IN EFI_PHYSICAL_ADDRESS MemoryAddress, IN UINT64 MemoryLength, IN EFI_MEMORY_CACHE_TYPE MemoryCacheType)

Detailed Description

Copyright (c) 2014, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file CacheLib.h.

Macro Definition Documentation

◆ EFI_CACHE_UNCACHEABLE

#define EFI_CACHE_UNCACHEABLE 0

Definition at line 16 of file CacheLib.h.

◆ EFI_CACHE_WRITEBACK

#define EFI_CACHE_WRITEBACK 6

Definition at line 20 of file CacheLib.h.

◆ EFI_CACHE_WRITECOMBINING

#define EFI_CACHE_WRITECOMBINING 1

Definition at line 17 of file CacheLib.h.

◆ EFI_CACHE_WRITEPROTECTED

#define EFI_CACHE_WRITEPROTECTED 5

Definition at line 19 of file CacheLib.h.

◆ EFI_CACHE_WRITETHROUGH

#define EFI_CACHE_WRITETHROUGH 4

Definition at line 18 of file CacheLib.h.

Typedef Documentation

◆ EFI_MEMORY_CACHE_TYPE

typedef INT32 EFI_MEMORY_CACHE_TYPE

Definition at line 14 of file CacheLib.h.

Function Documentation

◆ ResetCacheAttributes()

EFI_STATUS EFIAPI ResetCacheAttributes ( VOID )

Reset all the MTRRs to a known state.

Return values

EFI_SUCCESS All MTRRs have been reset successfully.

Definition at line 582 of file CacheLib.c.

◆ SetCacheAttributes()

EFI_STATUS EFIAPI SetCacheAttributes	(	IN EFI_PHYSICAL_ADDRESS	MemoryAddress,
		IN UINT64	MemoryLength,
		IN EFI_MEMORY_CACHE_TYPE	MemoryCacheType
	)

Given the memory range and cache type, programs the MTRRs.

Parameters

[in]	MemoryAddress	Base Address of Memory to program MTRR.
[in]	MemoryLength	Length of Memory to program MTRR.
[in]	MemoryCacheType	Cache Type.