108 lines
5.3 KiB
C
108 lines
5.3 KiB
C
/** @file
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This file declares the Section Extraction PPI.
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This PPI is defined in PEI CIS version 0.91. It supports encapsulating sections,
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such as GUIDed sections used to authenticate the file encapsulation of other domain-specific wrapping.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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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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**/
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#ifndef __SECTION_EXTRACTION_H__
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#define __SECTION_EXTRACTION_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_AUTH_STATUS_PLATFORM_OVERRIDE 0x01
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#define EFI_AUTH_STATUS_IMAGE_SIGNED 0x02
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#define EFI_AUTH_STATUS_NOT_TESTED 0x04
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#define EFI_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 The pointer to the PEI Services Table.
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@param This Indicates the calling context
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@param SectionType The pointer to an EFI_SECTION_TYPE. If
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SectionType == NULL, the contents of the entire
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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 The pointer to an EFI_GUID.
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If SectionType == EFI_SECTION_GUID_DEFINED,
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SectionDefinitionGuid indicates for which section
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GUID to search. If SectionType != EFI_SECTION_GUID_DEFINED,
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SectionDefinitionGuid 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 The pointer to a pointer to a buffer in which the
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section contents are returned.
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@param BufferSize A pointer to a caller-allocated UINT32. On input,
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*BufferSize indicates the size in bytes of the
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memory region pointed to by Buffer. On output,
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*BufferSize contains the number of bytes required
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to read the section.
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@param AuthenticationStatus A pointer to a caller-allocated UINT32 in
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which any metadata from encapsulating GUID-defined
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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
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bit set, but there was no corresponding GUIDed
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Section Extraction Protocol in the handle database.
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*Buffer is unmodified.
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@retval EFI_NOT_FOUND The requested section does not exist.*Buffer is
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unmodified.
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@retval EFI_OUT_OF_RESOURCES The system has insufficient resources to process
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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
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is filled and contents are section contents are
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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 GetSection; ///< 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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