You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
285 lines
15 KiB
285 lines
15 KiB
/** @file
|
|
This library provides common functions to process the different guided section data.
|
|
|
|
This library provides functions to process GUIDed sections of FFS files. Handlers may
|
|
be registered to decode GUIDed sections of FFS files. Services are provided to determine
|
|
the set of supported section GUIDs, collection information about a specific GUIDed section,
|
|
and decode a specific GUIDed section.
|
|
|
|
A library instance that produces this library class may be used to produce a
|
|
EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI or a EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL
|
|
providing a simple method to extend the number of GUIDed sections types a platform supports.
|
|
|
|
Copyright (c) 2006 - 2018, 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.
|
|
|
|
**/
|
|
#ifndef __EXTRACT_GUIDED_SECTION_H__
|
|
#define __EXTRACT_GUIDED_SECTION_H__
|
|
|
|
/**
|
|
Examines a GUIDed section and returns the size of the decoded buffer and the
|
|
size of an optional scratch buffer required to actually decode the data in a GUIDed section.
|
|
|
|
Examines a GUIDed section specified by InputSection.
|
|
If GUID for InputSection does not match the GUID that this handler supports,
|
|
then RETURN_UNSUPPORTED is returned.
|
|
If the required information can not be retrieved from InputSection,
|
|
then RETURN_INVALID_PARAMETER is returned.
|
|
If the GUID of InputSection does match the GUID that this handler supports,
|
|
then the size required to hold the decoded buffer is returned in OututBufferSize,
|
|
the size of an optional scratch buffer is returned in ScratchSize, and the Attributes field
|
|
from EFI_GUID_DEFINED_SECTION header of InputSection is returned in SectionAttribute.
|
|
|
|
If InputSection is NULL, then ASSERT().
|
|
If OutputBufferSize is NULL, then ASSERT().
|
|
If ScratchBufferSize is NULL, then ASSERT().
|
|
If SectionAttribute is NULL, then ASSERT().
|
|
|
|
|
|
@param[in] InputSection A pointer to a GUIDed section of an FFS formatted file.
|
|
@param[out] OutputBufferSize A pointer to the size, in bytes, of an output buffer required
|
|
if the buffer specified by InputSection were decoded.
|
|
@param[out] ScratchBufferSize A pointer to the size, in bytes, required as scratch space
|
|
if the buffer specified by InputSection were decoded.
|
|
@param[out] SectionAttribute A pointer to the attributes of the GUIDed section. See the Attributes
|
|
field of EFI_GUID_DEFINED_SECTION in the PI Specification.
|
|
|
|
@retval RETURN_SUCCESS The information about InputSection was returned.
|
|
@retval RETURN_UNSUPPORTED The section specified by InputSection does not match the GUID this handler supports.
|
|
@retval RETURN_INVALID_PARAMETER The information can not be retrieved from the section specified by InputSection.
|
|
|
|
**/
|
|
typedef
|
|
RETURN_STATUS
|
|
(EFIAPI *EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER)(
|
|
IN CONST VOID *InputSection,
|
|
OUT UINT32 *OutputBufferSize,
|
|
OUT UINT32 *ScratchBufferSize,
|
|
OUT UINT16 *SectionAttribute
|
|
);
|
|
|
|
/**
|
|
Decodes a GUIDed section into a caller allocated output buffer.
|
|
|
|
Decodes the GUIDed section specified by InputSection.
|
|
If GUID for InputSection does not match the GUID that this handler supports, then RETURN_UNSUPPORTED is returned.
|
|
If the data in InputSection can not be decoded, then RETURN_INVALID_PARAMETER is returned.
|
|
If the GUID of InputSection does match the GUID that this handler supports, then InputSection
|
|
is decoded into the buffer specified by OutputBuffer and the authentication status of this
|
|
decode operation is returned in AuthenticationStatus. If the decoded buffer is identical to the
|
|
data in InputSection, then OutputBuffer is set to point at the data in InputSection. Otherwise,
|
|
the decoded data will be placed in caller allocated buffer specified by OutputBuffer.
|
|
|
|
If InputSection is NULL, then ASSERT().
|
|
If OutputBuffer is NULL, then ASSERT().
|
|
If ScratchBuffer is NULL and this decode operation requires a scratch buffer, then ASSERT().
|
|
If AuthenticationStatus is NULL, then ASSERT().
|
|
|
|
|
|
@param[in] InputSection A pointer to a GUIDed section of an FFS formatted file.
|
|
@param[out] OutputBuffer A pointer to a buffer that contains the result of a decode operation.
|
|
@param[out] ScratchBuffer A caller allocated buffer that may be required by this function
|
|
as a scratch buffer to perform the decode operation.
|
|
@param[out] AuthenticationStatus
|
|
A pointer to the authentication status of the decoded output buffer.
|
|
See the definition of authentication status in the EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI
|
|
section of the PI Specification. EFI_AUTH_STATUS_PLATFORM_OVERRIDE must
|
|
never be set by this handler.
|
|
|
|
@retval RETURN_SUCCESS The buffer specified by InputSection was decoded.
|
|
@retval RETURN_UNSUPPORTED The section specified by InputSection does not match the GUID this handler supports.
|
|
@retval RETURN_INVALID_PARAMETER The section specified by InputSection can not be decoded.
|
|
|
|
**/
|
|
typedef
|
|
RETURN_STATUS
|
|
(EFIAPI *EXTRACT_GUIDED_SECTION_DECODE_HANDLER)(
|
|
IN CONST VOID *InputSection,
|
|
OUT VOID **OutputBuffer,
|
|
IN VOID *ScratchBuffer, OPTIONAL
|
|
OUT UINT32 *AuthenticationStatus
|
|
);
|
|
|
|
/**
|
|
Registers handlers of type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER and EXTRACT_GUIDED_SECTION_DECODE_HANDLER
|
|
for a specific GUID section type.
|
|
|
|
Registers the handlers specified by GetInfoHandler and DecodeHandler with the GUID specified by SectionGuid.
|
|
If the GUID value specified by SectionGuid has already been registered, then return RETURN_ALREADY_STARTED.
|
|
If there are not enough resources available to register the handlers then RETURN_OUT_OF_RESOURCES is returned.
|
|
|
|
If SectionGuid is NULL, then ASSERT().
|
|
If GetInfoHandler is NULL, then ASSERT().
|
|
If DecodeHandler is NULL, then ASSERT().
|
|
|
|
@param[in] SectionGuid A pointer to the GUID associated with the the handlers
|
|
of the GUIDed section type being registered.
|
|
@param[in] GetInfoHandler Pointer to a function that examines a GUIDed section and returns the
|
|
size of the decoded buffer and the size of an optional scratch buffer
|
|
required to actually decode the data in a GUIDed section.
|
|
@param[in] DecodeHandler Pointer to a function that decodes a GUIDed section into a caller
|
|
allocated output buffer.
|
|
|
|
@retval RETURN_SUCCESS The handlers were registered.
|
|
@retval RETURN_OUT_OF_RESOURCES There are not enough resources available to register the handlers.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
ExtractGuidedSectionRegisterHandlers (
|
|
IN CONST GUID *SectionGuid,
|
|
IN EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER GetInfoHandler,
|
|
IN EXTRACT_GUIDED_SECTION_DECODE_HANDLER DecodeHandler
|
|
);
|
|
|
|
/**
|
|
Retrieve the list GUIDs that have been registered through ExtractGuidedSectionRegisterHandlers().
|
|
|
|
Sets ExtractHandlerGuidTable so it points at a callee allocated array of registered GUIDs.
|
|
The total number of GUIDs in the array are returned. Since the array of GUIDs is callee allocated
|
|
and caller must treat this array of GUIDs as read-only data.
|
|
If ExtractHandlerGuidTable is NULL, then ASSERT().
|
|
|
|
@param[out] ExtractHandlerGuidTable A pointer to the array of GUIDs that have been registered through
|
|
ExtractGuidedSectionRegisterHandlers().
|
|
|
|
@return the number of the supported extract guided Handler.
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
ExtractGuidedSectionGetGuidList (
|
|
OUT GUID **ExtractHandlerGuidTable
|
|
);
|
|
|
|
/**
|
|
Retrieves a GUID from a GUIDed section and uses that GUID to select an associated handler of type
|
|
EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers().
|
|
The selected handler is used to retrieve and return the size of the decoded buffer and the size of an
|
|
optional scratch buffer required to actually decode the data in a GUIDed section.
|
|
|
|
Examines a GUIDed section specified by InputSection.
|
|
If GUID for InputSection does not match any of the GUIDs registered through ExtractGuidedSectionRegisterHandlers(),
|
|
then RETURN_UNSUPPORTED is returned.
|
|
If the GUID of InputSection does match the GUID that this handler supports, then the the associated handler
|
|
of type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers()
|
|
is used to retrieve the OututBufferSize, ScratchSize, and Attributes values. The return status from the handler of
|
|
type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER is returned.
|
|
|
|
If InputSection is NULL, then ASSERT().
|
|
If OutputBufferSize is NULL, then ASSERT().
|
|
If ScratchBufferSize is NULL, then ASSERT().
|
|
If SectionAttribute is NULL, then ASSERT().
|
|
|
|
@param[in] InputSection A pointer to a GUIDed section of an FFS formatted file.
|
|
@param[out] OutputBufferSize A pointer to the size, in bytes, of an output buffer required if the buffer
|
|
specified by InputSection were decoded.
|
|
@param[out] ScratchBufferSize A pointer to the size, in bytes, required as scratch space if the buffer specified by
|
|
InputSection were decoded.
|
|
@param[out] SectionAttribute A pointer to the attributes of the GUIDed section. See the Attributes field of
|
|
EFI_GUID_DEFINED_SECTION in the PI Specification.
|
|
|
|
@retval RETURN_SUCCESS Get the required information successfully.
|
|
@retval RETURN_UNSUPPORTED The GUID from the section specified by InputSection does not match any of
|
|
the GUIDs registered with ExtractGuidedSectionRegisterHandlers().
|
|
@retval Others The return status from the handler associated with the GUID retrieved from
|
|
the section specified by InputSection.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
ExtractGuidedSectionGetInfo (
|
|
IN CONST VOID *InputSection,
|
|
OUT UINT32 *OutputBufferSize,
|
|
OUT UINT32 *ScratchBufferSize,
|
|
OUT UINT16 *SectionAttribute
|
|
);
|
|
|
|
/**
|
|
Retrieves the GUID from a GUIDed section and uses that GUID to select an associated handler of type
|
|
EXTRACT_GUIDED_SECTION_DECODE_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers().
|
|
The selected handler is used to decode the data in a GUIDed section and return the result in a caller
|
|
allocated output buffer.
|
|
|
|
Decodes the GUIDed section specified by InputSection.
|
|
If GUID for InputSection does not match any of the GUIDs registered through ExtractGuidedSectionRegisterHandlers(),
|
|
then RETURN_UNSUPPORTED is returned.
|
|
If the GUID of InputSection does match the GUID that this handler supports, then the the associated handler
|
|
of type EXTRACT_GUIDED_SECTION_DECODE_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers()
|
|
is used to decode InputSection into the buffer specified by OutputBuffer and the authentication status of this
|
|
decode operation is returned in AuthenticationStatus. If the decoded buffer is identical to the data in InputSection,
|
|
then OutputBuffer is set to point at the data in InputSection. Otherwise, the decoded data will be placed in caller
|
|
allocated buffer specified by OutputBuffer. This function is responsible for computing the EFI_AUTH_STATUS_PLATFORM_OVERRIDE
|
|
bit of in AuthenticationStatus. The return status from the handler of type EXTRACT_GUIDED_SECTION_DECODE_HANDLER is returned.
|
|
|
|
If InputSection is NULL, then ASSERT().
|
|
If OutputBuffer is NULL, then ASSERT().
|
|
If ScratchBuffer is NULL and this decode operation requires a scratch buffer, then ASSERT().
|
|
If AuthenticationStatus is NULL, then ASSERT().
|
|
|
|
@param[in] InputSection A pointer to a GUIDed section of an FFS formatted file.
|
|
@param[out] OutputBuffer A pointer to a buffer that contains the result of a decode operation.
|
|
@param[in] ScratchBuffer A caller allocated buffer that may be required by this function as a scratch buffer to perform the decode operation.
|
|
@param[out] AuthenticationStatus
|
|
A pointer to the authentication status of the decoded output buffer. See the definition
|
|
of authentication status in the EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI section of the PI
|
|
Specification.
|
|
|
|
@retval RETURN_SUCCESS The buffer specified by InputSection was decoded.
|
|
@retval RETURN_UNSUPPORTED The section specified by InputSection does not match the GUID this handler supports.
|
|
@retval RETURN_INVALID_PARAMETER The section specified by InputSection can not be decoded.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
ExtractGuidedSectionDecode (
|
|
IN CONST VOID *InputSection,
|
|
OUT VOID **OutputBuffer,
|
|
IN VOID *ScratchBuffer, OPTIONAL
|
|
OUT UINT32 *AuthenticationStatus
|
|
);
|
|
|
|
/**
|
|
Retrieves handlers of type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER and
|
|
EXTRACT_GUIDED_SECTION_DECODE_HANDLER for a specific GUID section type.
|
|
|
|
Retrieves the handlers associated with SectionGuid and returns them in
|
|
GetInfoHandler and DecodeHandler.
|
|
|
|
If the GUID value specified by SectionGuid has not been registered, then
|
|
return RETURN_NOT_FOUND.
|
|
|
|
If SectionGuid is NULL, then ASSERT().
|
|
|
|
@param[in] SectionGuid A pointer to the GUID associated with the handlersof the GUIDed
|
|
section type being retrieved.
|
|
@param[out] GetInfoHandler Pointer to a function that examines a GUIDed section and returns
|
|
the size of the decoded buffer and the size of an optional scratch
|
|
buffer required to actually decode the data in a GUIDed section.
|
|
This is an optional parameter that may be NULL. If it is NULL, then
|
|
the previously registered handler is not returned.
|
|
@param[out] DecodeHandler Pointer to a function that decodes a GUIDed section into a caller
|
|
allocated output buffer. This is an optional parameter that may be NULL.
|
|
If it is NULL, then the previously registered handler is not returned.
|
|
|
|
@retval RETURN_SUCCESS The handlers were retrieved.
|
|
@retval RETURN_NOT_FOUND No handlers have been registered with the specified GUID.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
ExtractGuidedSectionGetHandlers (
|
|
IN CONST GUID *SectionGuid,
|
|
OUT EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER *GetInfoHandler, OPTIONAL
|
|
OUT EXTRACT_GUIDED_SECTION_DECODE_HANDLER *DecodeHandler OPTIONAL
|
|
);
|
|
|
|
#endif
|