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/** @file
MDE PI library functions and macros
Copyright (c) 2007, 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.
**/
#ifndef __PI_LIB_H__
#define __PI_LIB_H__
#include <Pi/PiFirmwareFile.h>
/**
Allocate and fill a buffer with an image identified by a Firmware File GUID name and a Firmware Section type.
The Firmware Volumes to search for the Firmware File can be specified to be either all Firmware Volumes
in the system, or the Firmware Volume which contains the Firmware File specified by an image handle.
If ImageHandle is NULL, all Firmware Volumes in the system will be searched. If ImageHandle is not NULL,
ImageHandle is interpreted as EFI_PEI_FILE_HANDLE for the implementation of this function for PEI phase.
The input parameter ImageHandle is interpreted as EFI_HANDLE, on which an EFI_LOADED_IMAGE_PROTOCOL
is installed, for the implementation of this function for DXE phase. The search always starts from the FV
identified by ImageHandle. If WithinImageFv is TRUE, search will only be performed on the first FV. If WithinImageFv
is FALSE, search will continue on other FVs if it fails on the first FV. The search order of Firmware Volumes is
deterministic but arbitrary if no new firmware volume is added into the system between each search.
The search order for the section type specified by SectionType in the Firmware File is using a depth-first
and left-to-right algorithm through all sections. The first section found to match SectionType will be returned.
If SectionType is EFI_SECTION_PE32, EFI_SECTION_PE32 will be used as Firmware Section type
to read Firmware Section data from the Firmware File. If no such section exists, the function will try
to read a Firmware File named with NameGuid. If no such file exists, EFI_NOT_FOUND is returned.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE will be used as Firmware Section type to read Firmware Section
data from the Firmware File. If no such section exists, EFI_SECTION_PE32 will be used as Firmware Section type to
read Firmware Section data from the Firmware File. If no such section exists, the function will try to read a Firmware
File named with NameGuid. If no such file exists, EFI_NOT_FOUND is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can only be called at TPL_NOTIFY and below.
If ImageHandle is NULL and WithinImage is TRUE, then ASSERT ();
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param NameGuid The GUID name of a Firmware File.
@param SectionType The Firmware Section type.
@param Buffer On output, Buffer contains the the data read from the section in the Firmware File found.
@param Size On output, the size of Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromFvFile (
IN CONST VOID* ImageHandle OPTIONAL,
IN CONST EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
OUT VOID **Buffer,
OUT UINTN *Size,
IN BOOLEAN WithImageFv
)
;
/**
Identify the device handle from which the Image is loaded from. As this device handle is passed to
GetSectionFromFv as the identifier for a Firmware Volume, an EFI_FIRMWARE_VOLUME2_PROTOCOL
protocol instance should be located succesfully by calling gBS->HandleProtocol ().
This function locates the EFI_LOADED_IMAGE_PROTOCOL instance installed
on ImageHandle. It then returns EFI_LOADED_IMAGE_PROTOCOL.DeviceHandle.
If ImageHandle is NULL, then ASSERT ();
If failed to locate a EFI_LOADED_IMAGE_PROTOCOL on ImageHandle, then ASSERT ();
@param ImageHandle The firmware allocated handle for UEFI image.
@retval EFI_HANDLE The device handle from which the Image is loaded from.
**/
EFI_HANDLE
EFIAPI
ImageHandleToFvHandle (
EFI_HANDLE ImageHandle
)
;
/**
Allocate and fill a buffer from the Firmware Section identified by a Firmware File GUID name and a Firmware
Section type and instance number from the any Firmware Volumes in the system.
The function will read the first Firmware Section found sepcifed by NameGuid and SectionType from the
any Firmware Volume in the system.
The search order for Firmware Volumes in the system is determistic but abitrary if no new Firmware Volume is installed
into the system. The search order for the section specified by SectionType within a Firmware File is defined by
EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection (). Please check Section 2.4 of Volume 3: Platform Initialization
Shared Architectural Elements for detailes.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE will be used as Firmware Section type to read Firmware Section
data from the Firmware File. If no such section exists, EFI_SECTION_PE32 will be used as Firmware Section type to
read Firmware Section data from the Firmware File. If no such section specified is found to match ,
EFI_NOT_FOUND is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can only be called at TPL_NOTIFY and below.
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param NameGuid The GUID name of a Firmware File.
@param SectionType The Firmware Section type.
@param Instance The instance number of Firmware Section to read from starting from 0.
@param Buffer On output, Buffer contains the the data read from the section in the Firmware File found.
@param Size On output, the size of Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromAnyFv (
IN CONST EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
IN UINTN Instance,
OUT VOID **Buffer,
OUT UINTN *Size
)
;
/**
Allocate and fill a buffer from a Firmware Section identified by a Firmware File GUID name, a Firmware
Section type and instance number from the specified Firmware Volume.
This functions first locate the EFI_FIRMWARE_VOLUME2_PROTOCOL protocol instance on FvHandle in order to
carry out the Firmware Volume read operation. The function then reads the Firmware Section found sepcifed
by NameGuid, SectionType and Instance.
The search order for the section specified by SectionType within a Firmware File is defined by
EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection (). Please check Section 2.4 of Volume 3: Platform Initialization
Shared Architectural Elements for detailes.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE will be used as Firmware Section type to read Firmware Section
data from the Firmware File. If no such section exists, EFI_SECTION_PE32 will be used as Firmware Section type to
read Firmware Section data from the Firmware File. If no such section specified is found to match ,
EFI_NOT_FOUND is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can be only called at TPL_NOTIFY and below.
If FvHandle is NULL, then ASSERT ();
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param FvHandle The device handle that contains a instance of EFI_FIRMWARE_VOLUME2_PROTOCOL instance.
@param NameGuid The GUID name of a Firmware File.
@param SectionType The Firmware Section type.
@param Instance The instance number of Firmware Section to read from starting from 0.
@param Buffer On output, Buffer contains the the data read from the section in the Firmware File found.
@param Size On output, the size of Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_UNSUPPORTED FvHandle does not support EFI_FIRMWARE_VOLUME2_PROTOCOL.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromFv (
IN EFI_HANDLE FvHandle,
IN CONST EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
IN UINTN Instance,
OUT VOID **Buffer,
OUT UINTN *Size
)
;
/**
Allocate and fill a buffer from a Firmware Section identified by a Firmware File GUID name, a Firmware
Section type and instance number from the same Firmware Volume with the caller's FFS.
This functions first locates the EFI_FIRMWARE_VOLUME2_PROTOCOL protocol instance for same Firmrware Volume
which also contains the FFS of the caller in order to carry out the Firmware Volume read operation.
The function then reads the Firmware Section found sepcifed by NameGuid, SectionType and Instance.
The search order for the section specified by SectionType within a Firmware File is defined by
EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection (). Please check Section 2.4 of Volume 3: Platform Initialization
Shared Architectural Elements for detailes.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE will be used as Firmware Section type to read Firmware Section
data from the Firmware File. If no such section exists, EFI_SECTION_PE32 will be used as Firmware Section type to
read Firmware Section data from the Firmware File. If no such section specified is found to match ,
EFI_NOT_FOUND is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can be only called at TPL_NOTIFY and below.
If FvHandle is NULL, then ASSERT ();
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param NameGuid The GUID name of a Firmware File.
@param SectionType The Firmware Section type.
@param Instance The instance number of Firmware Section to read from starting from 0.
@param Buffer On output, Buffer contains the the data read from the section in the Firmware File found.
@param Size On output, the size of Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_UNSUPPORTED FvHandle does not support EFI_FIRMWARE_VOLUME2_PROTOCOL.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromCurrentFv (
IN CONST EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
IN UINTN Instance,
OUT VOID **Buffer,
OUT UINTN *Size
)
;
/**
Allocate and fill a buffer from the first Firmware Section in the same Firmware File as the caller of this function.
The function will read the first Firmware Section found sepcifed by NameGuid and SectionType from the
Firmware Volume specified by FvHandle. On this FvHandle, an EFI_FIRMWARE_VOLUME2_PROTOCOL protocol instance
should be located succesfully in order to carry out the Firmware Volume operations.
The search order for the section type specified by SectionType in the Firmware File is using a depth-first
and left-to-right algorithm through all sections. The first section found to match SectionType will be returned.
If SectionType is EFI_SECTION_PE32, EFI_SECTION_PE32 will be used as Firmware Section type
to read Firmware Section data from the Firmware File. If no such section exists, the function will try
to read a Firmware File named with NameGuid. If no such file exists, EFI_NOT_FOUND is returned.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE will be used as Firmware Section type to read Firmware Section
data from the Firmware File. If no such section exists, EFI_SECTION_PE32 will be used as Firmware Section type to
read Firmware Section data from the Firmware File. If no such section exists, the function will try to read a Firmware
File named with NameGuid. If no such file exists, EFI_NOT_FOUND is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can only be called at TPL_NOTIFY and below.
If FvHandle is NULL and WithinImage is TRUE, then ASSERT ();
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param NameGuid The GUID name of a Firmware File.
@param SectionType The Firmware Section type.
@param Buffer On output, Buffer contains the the data read from the section in the Firmware File found.
@param Size On output, the size of Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromCurrentFfs (
IN EFI_SECTION_TYPE SectionType,
IN UINTN Instance,
OUT VOID **Buffer,
OUT UINTN *Size
)
;
#endif
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