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			108 lines
		
	
	
		
			5.0 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			108 lines
		
	
	
		
			5.0 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/** @file
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  This file declares Section Extraction PPI.
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  This PPI supports encapsulating sections, such as GUIDed sections used to authenticate the file
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  encapsulation of other domain-specific wrapping.
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  Copyright (c) 2006, Intel Corporation
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  All rights reserved. This program and the accompanying materials
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  are licensed and made available under the terms and conditions of the BSD License
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  which accompanies this distribution.  The full text of the license may be found at
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  http://opensource.org/licenses/bsd-license.php
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  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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  Module Name:  SectionExtraction.h
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  @par Revision Reference:
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  This PPI is defined in PEI CIS.
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  Version 0.91.
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**/
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#ifndef __SECTION_EXTRACTION_PPI_H__
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#define __SECTION_EXTRACTION_PPI_H__
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#include <PiPei.h>
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#define EFI_PEI_SECTION_EXTRACTION_PPI_GUID \
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  { \
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    0x4F89E208, 0xE144, 0x4804, {0x9E, 0xC8, 0x0F, 0x89, 0x4F, 0x7E, 0x36, 0xD7 } \
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  }
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typedef struct _EFI_PEI_SECTION_EXTRACTION_PPI EFI_PEI_SECTION_EXTRACTION_PPI;
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//
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// Bit values for AuthenticationStatus
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//
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#define EFI_PEI_AUTH_STATUS_PLATFORM_OVERRIDE 0x01
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#define EFI_PEI_AUTH_STATUS_IMAGE_SIGNED      0x02
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#define EFI_PEI_AUTH_STATUS_NOT_TESTED        0x04
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#define EFI_PEI_AUTH_STATUS_TEST_FAILED       0x08
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/**
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  The function is used to retrieve a section from within a section file.
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  It will retrieve both encapsulation sections and leaf sections in their entirety,
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  exclusive of the section header.
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  @param  PeiServices    Pointer to the PEI Services Table.
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  @param  This           Indicates the calling context
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  @param  SectionType    Pointer to an EFI_SECTION_TYPE. If SectionType == NULL,
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                         the contents of the entire section are returned in Buffer. If SectionType
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                         is not NULL, only the requested section is returned.
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  @param  SectionDefinitionGuid
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                         Pointer to an EFI_GUID.
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                         If SectionType == EFI_SECTION_GUID_DEFINED, SectionDefinitionGuid
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                         indicates for which section GUID to search.
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                         If SectionType != EFI_SECTION_GUID_DEFINED, SectionDefinitionGuid
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                         is unused and is ignored.
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  @param  SectionInstance If SectionType is not NULL, indicates which
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                         instance of the requested section type to return.
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  @param  Buffer         Pointer to a pointer to a buffer in which the section
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                         contents are returned.
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  @param  BufferSize     A pointer to a caller-allocated UINT32.On input, *BufferSize
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                         indicates the size in bytes of the memory region pointed to by Buffer.On output,
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                         *BufferSize contains the number of bytes required to read the section.
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  @param  AuthenticationStatus
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                         A pointer to a caller-allocated UINT32 in
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                         which any metadata from encapsulating GUID-defined sections is returned.
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  @retval EFI_SUCCESS           The section was successfully processed and the section
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                                contents were returned in Buffer.
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  @retval EFI_PROTOCOL_ERROR    A GUID-defined section was encountered in
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                                the file with its EFI_GUIDED_SECTION_PROCESSING_REQUIRED bit set, but
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                                there was no corresponding GUIDed Section Extraction Protocol in the
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                                handle database.*Buffer is unmodified.
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  @retval EFI_NOT_FOUND         The requested section does not exist.*Buffer is unmodified.
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  @retval EFI_OUT_OF_RESOURCES  The system has insufficient resources to process the request.
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  @retval EFI_INVALID_PARAMETER The SectionStreamHandle does not exist.
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  @retval EFI_WARN_TOO_SMALL    The size of the input buffer is insufficient to
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                                contain the requested section. The input buffer is filled and contents are
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                                section contents are truncated.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_GET_SECTION)(
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  IN EFI_PEI_SERVICES                         **PeiServices,
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  IN EFI_PEI_SECTION_EXTRACTION_PPI           *This,
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  IN EFI_SECTION_TYPE                         *SectionType,
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  IN EFI_GUID                                 *SectionDefinitionGuid, OPTIONAL
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  IN UINTN                                    SectionInstance,
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  IN VOID                                     **Buffer,
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  IN OUT UINT32                               *BufferSize,
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  OUT UINT32                                  *AuthenticationStatus
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  );
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/**
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  This PPI supports encapsulating sections, such as GUIDed sections used to
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  authenticate the file encapsulation of other domain-specific wrapping.
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**/
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struct _EFI_PEI_SECTION_EXTRACTION_PPI {
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  EFI_PEI_GET_SECTION PeiGetSection;  ///< Retrieves a section from within a section file.
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};
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extern EFI_GUID gEfiPeiSectionExtractionPpiGuid;
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#endif
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