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128 lines
5.3 KiB
C
128 lines
5.3 KiB
C
/** @file
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SMM Memory Attribute Protocol provides retrieval and update service
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for memory attributes in EFI SMM environment.
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Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __SMM_MEMORYATTRIBUTE_H__
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#define __SMM_MEMORYATTRIBUTE_H__
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//{69B792EA-39CE-402D-A2A6-F721DE351DFE}
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#define EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL_GUID \
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{ \
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0x69b792ea, 0x39ce, 0x402d, { 0xa2, 0xa6, 0xf7, 0x21, 0xde, 0x35, 0x1d, 0xfe } \
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}
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typedef struct _EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL;
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/**
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This function set given attributes of the memory region specified by
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BaseAddress and Length.
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@param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
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@param BaseAddress The physical address that is the start address of
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a memory region.
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@param Length The size in bytes of the memory region.
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@param Attributes The bit mask of attributes to set for the memory
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region.
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@retval EFI_SUCCESS The attributes were set for the memory region.
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@retval EFI_INVALID_PARAMETER Length is zero.
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Attributes specified an illegal combination of
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attributes that cannot be set together.
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@retval EFI_UNSUPPORTED The processor does not support one or more
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bytes of the memory resource range specified
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by BaseAddress and Length.
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The bit mask of attributes is not supported for
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the memory resource range specified by
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BaseAddress and Length.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_SMM_SET_MEMORY_ATTRIBUTES)(
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IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN UINT64 Attributes
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);
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/**
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This function clears given attributes of the memory region specified by
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BaseAddress and Length.
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@param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
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@param BaseAddress The physical address that is the start address of
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a memory region.
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@param Length The size in bytes of the memory region.
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@param Attributes The bit mask of attributes to clear for the memory
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region.
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@retval EFI_SUCCESS The attributes were cleared for the memory region.
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@retval EFI_INVALID_PARAMETER Length is zero.
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Attributes specified an illegal combination of
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attributes that cannot be cleared together.
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@retval EFI_UNSUPPORTED The processor does not support one or more
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bytes of the memory resource range specified
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by BaseAddress and Length.
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The bit mask of attributes is not supported for
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the memory resource range specified by
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BaseAddress and Length.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_SMM_CLEAR_MEMORY_ATTRIBUTES)(
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IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN UINT64 Attributes
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);
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/**
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This function retrieves the attributes of the memory region specified by
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BaseAddress and Length. If different attributes are got from different part
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of the memory region, EFI_NO_MAPPING will be returned.
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@param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
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@param BaseAddress The physical address that is the start address of
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a memory region.
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@param Length The size in bytes of the memory region.
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@param Attributes Pointer to attributes returned.
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@retval EFI_SUCCESS The attributes got for the memory region.
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@retval EFI_INVALID_PARAMETER Length is zero.
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Attributes is NULL.
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@retval EFI_NO_MAPPING Attributes are not consistent cross the memory
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region.
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@retval EFI_UNSUPPORTED The processor does not support one or more
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bytes of the memory resource range specified
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by BaseAddress and Length.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_SMM_GET_MEMORY_ATTRIBUTES)(
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IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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OUT UINT64 *Attributes
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);
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///
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/// SMM Memory Attribute Protocol provides services to retrieve or update
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/// attribute of memory in the EFI SMM environment.
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///
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struct _EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL {
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EDKII_SMM_GET_MEMORY_ATTRIBUTES GetMemoryAttributes;
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EDKII_SMM_SET_MEMORY_ATTRIBUTES SetMemoryAttributes;
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EDKII_SMM_CLEAR_MEMORY_ATTRIBUTES ClearMemoryAttributes;
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};
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extern EFI_GUID gEdkiiSmmMemoryAttributeProtocolGuid;
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#endif
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