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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. 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 defined in PI Version 1.00.
**/
#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.
Buffer containing the input GUIDed section to be
processed. 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
);
/**
@par Ppi Description:
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.
@param ExtractSection Takes the GUIDed section as input and
produces the section stream data. See
the ExtractSection() function
description.
**/
struct _EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI {
EFI_PEI_EXTRACT_GUIDED_SECTION ExtractSection;
};
#endif
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