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/** @file
This file declares the Section Extraction PPI.
This PPI is defined in PEI CIS version 0.91. It supports encapsulating sections,
such as GUIDed sections used to authenticate the file encapsulation of other domain-specific wrapping.
Copyright (c) 2006 - 2010, 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 that 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 __SECTION_EXTRACTION_H__
#define __SECTION_EXTRACTION_H__
#define EFI_PEI_SECTION_EXTRACTION_PPI_GUID \
{ \
0x4F89E208, 0xE144, 0x4804, {0x9E, 0xC8, 0x0F, 0x89, 0x4F, 0x7E, 0x36, 0xD7 } \
}
typedef struct _EFI_PEI_SECTION_EXTRACTION_PPI EFI_PEI_SECTION_EXTRACTION_PPI;
//
// Bit values for AuthenticationStatus
//
#define EFI_AUTH_STATUS_PLATFORM_OVERRIDE 0x01
#define EFI_AUTH_STATUS_IMAGE_SIGNED 0x02
#define EFI_AUTH_STATUS_NOT_TESTED 0x04
#define EFI_AUTH_STATUS_TEST_FAILED 0x08
/**
The function is used to retrieve a section from within a section file.
It will retrieve both encapsulation sections and leaf sections in their entirety,
exclusive of the section header.
@param PeiServices The pointer to the PEI Services Table.
@param This Indicates the calling context
@param SectionType The pointer to an EFI_SECTION_TYPE. If
SectionType == NULL, the contents of the entire
section are returned in Buffer. If SectionType
is not NULL, only the requested section is returned.
@param SectionDefinitionGuid The pointer to an EFI_GUID.
If SectionType == EFI_SECTION_GUID_DEFINED,
SectionDefinitionGuid indicates for which section
GUID to search. If SectionType != EFI_SECTION_GUID_DEFINED,
SectionDefinitionGuid is unused and is ignored.
@param SectionInstance If SectionType is not NULL, indicates which
instance of the requested section type to return.
@param Buffer The pointer to a pointer to a buffer in which the
section contents are returned.
@param BufferSize A pointer to a caller-allocated UINT32. On input,
*BufferSize indicates the size in bytes of the
memory region pointed to by Buffer. On output,
*BufferSize contains the number of bytes required
to read the section.
@param AuthenticationStatus A pointer to a caller-allocated UINT32 in
which any metadata from encapsulating GUID-defined
sections is returned.
@retval EFI_SUCCESS The section was successfully processed, and the section
contents were returned in Buffer.
@retval EFI_PROTOCOL_ERROR A GUID-defined section was encountered in
the file with its EFI_GUIDED_SECTION_PROCESSING_REQUIRED
bit set, but there was no corresponding GUIDed
Section Extraction Protocol in the handle database.
*Buffer is unmodified.
@retval EFI_NOT_FOUND The requested section does not exist.*Buffer is
unmodified.
@retval EFI_OUT_OF_RESOURCES The system has insufficient resources to process
the request.
@retval EFI_INVALID_PARAMETER The SectionStreamHandle does not exist.
@retval EFI_WARN_TOO_SMALL The size of the input buffer is insufficient to
contain the requested section. The input buffer
is filled and contents are section contents are
truncated.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_GET_SECTION)(
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_SECTION_EXTRACTION_PPI *This,
IN EFI_SECTION_TYPE *SectionType,
IN EFI_GUID *SectionDefinitionGuid, OPTIONAL
IN UINTN SectionInstance,
IN VOID **Buffer,
IN OUT UINT32 *BufferSize,
OUT UINT32 *AuthenticationStatus
);
/**
This PPI supports encapsulating sections, such as GUIDed sections used to
authenticate the file encapsulation of other domain-specific wrapping.
**/
struct _EFI_PEI_SECTION_EXTRACTION_PPI {
EFI_PEI_GET_SECTION GetSection; ///< Retrieves a section from within a section file.
};
extern EFI_GUID gEfiPeiSectionExtractionPpiGuid;
#endif
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