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/** @file
If a GUID-defined section is encountered when doing section extraction,
the PEI Foundation or the EFI_PEI_FILE_LOADER_PPI instance
calls the appropriate instance of the GUIDed Section Extraction PPI
to extract the section stream contained therein.
Copyright (c) 2006 - 2008, 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
which 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.
@par Revision Reference:
This PPI is introduced in PI Version 1.0.
**/
#ifndef __EFI_GUIDED_SECTION_EXTRACTION_PPI_H__
#define __EFI_GUIDED_SECTION_EXTRACTION_PPI_H__
//
// Typically, protocol interface structures are identified
// by associating them with a GUID. Each instance of
// a protocol with a given GUID must have
// the same interface structure. While all instances of
// the GUIDed Section Extraction PPI must have
// the same interface structure, they do not all have
// te same GUID. The GUID that is associated with
// an instance of the GUIDed Section Extraction Protocol
// is used to correlate it with the GUIDed section type
// that it is intended to process.
//
typedef struct _EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI;
/**
Processes the input section and returns the data contained therein
along with the authentication status.
The ExtractSection() function processes the input section and
returns a pointer to the section contents. If the section being
extracted does not require processing (if the section
GuidedSectionHeader.Attributes has the
EFI_GUIDED_SECTION_PROCESSING_REQUIRED field cleared), then
OutputBuffer is just updated to point to the start of the
section's contents. Otherwise, *Buffer must be allocated
from PEI permanent memory.
@param This Indicates the EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI
instance.
@param InputSection Buffer containing the input GUIDed section to be
processed.
@param OutputBuffer *OutputBuffer is allocated from PEI permanent memory
and contains the new section stream.
@param OutputSize A pointer to a caller-allocated UINTN in which
the size of *OutputBuffer allocation is stored.
If the function returns anything other than
EFI_SUCCESS, the value of *OutputSize is undefined.
@param AuthenticationStatus A pointer to a caller-allocated UINT32 that indicates
the authentication status of the output buffer.
If the input section's
GuidedSectionHeader.Attributes field has the
EFI_GUIDED_SECTION_AUTH_STATUS_VALID bit as clear,
*AuthenticationStatus must return zero. These bits
reflect the status of the extraction operation.
If the function returns anything other than EFI_SUCCESS,
the value of *AuthenticationStatus is undefined.
@retval EFI_SUCCESS The InputSection was successfully processed and the
section contents were returned.
@retval EFI_OUT_OF_RESOURCES The system has insufficient resources to process the request.
@retval EFI_INVALID_PARAMETER The GUID in InputSection does not match this instance of the
GUIDed Section Extraction PPI.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_EXTRACT_GUIDED_SECTION)(
IN CONST EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI *This,
IN CONST VOID *InputSection,
OUT VOID **OutputBuffer,
OUT UINTN *OutputSize,
OUT UINT32 *AuthenticationStatus
);
///
/// If a GUID-defined section is encountered when doing section extraction,
/// the PEI Foundation or the EFI_PEI_FILE_LOADER_PPI instance
/// calls the appropriate instance of the GUIDed Section
/// Extraction PPI to extract the section stream contained
/// therein.
///
struct _EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI {
EFI_PEI_EXTRACT_GUIDED_SECTION ExtractSection;
};
#endif
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