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325 lines
17 KiB
C
325 lines
17 KiB
C
/** @file
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MDE DXE Services Library provides functions that simplify the development of DXE Drivers.
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These functions help access data from sections of FFS files or from file path.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __DXE_SERVICES_LIB_H__
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#define __DXE_SERVICES_LIB_H__
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/**
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Searches all the available firmware volumes and returns the first matching FFS section.
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This function searches all the firmware volumes for FFS files with FV file type specified by FileType
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The order that the firmware volumes is searched is not deterministic. For each available FV a search
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is made for FFS file of type FileType. If the FV contains more than one FFS file with the same FileType,
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the FileInstance instance will be the matched FFS file. For each FFS file found a search
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is made for FFS sections of type SectionType. If the FFS file contains at least SectionInstance instances
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of the FFS section specified by SectionType, then the SectionInstance instance is returned in Buffer.
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Buffer is allocated using AllocatePool(), and the size of the allocated buffer is returned in Size.
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It is the caller's responsibility to use FreePool() to free the allocated buffer.
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See EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection() for details on how sections
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are retrieved from an FFS file based on SectionType and SectionInstance.
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If SectionType is EFI_SECTION_TE, and the search with an FFS file fails,
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the search will be retried with a section type of EFI_SECTION_PE32.
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This function must be called with a TPL <= TPL_NOTIFY.
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If Buffer is NULL, then ASSERT().
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If Size is NULL, then ASSERT().
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@param FileType Indicates the FV file type to search for within all available FVs.
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@param FileInstance Indicates which file instance within all available FVs specified by FileType.
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FileInstance starts from zero.
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@param SectionType Indicates the FFS section type to search for within the FFS file
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specified by FileType with FileInstance.
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@param SectionInstance Indicates which section instance within the FFS file
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specified by FileType with FileInstance to retrieve. SectionInstance starts from zero.
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@param Buffer On output, a pointer to a callee allocated buffer containing the FFS file section that was found.
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Is it the caller's responsibility to free this buffer using FreePool().
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@param Size On output, a pointer to the size, in bytes, of Buffer.
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@retval EFI_SUCCESS The specified FFS section was returned.
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@retval EFI_NOT_FOUND The specified FFS section could not be found.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources available to retrieve the matching FFS section.
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@retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a device error.
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@retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the firmware volume that
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contains the matching FFS section does not allow reads.
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**/
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EFI_STATUS
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EFIAPI
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GetSectionFromAnyFvByFileType (
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IN EFI_FV_FILETYPE FileType,
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IN UINTN FileInstance,
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IN EFI_SECTION_TYPE SectionType,
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IN UINTN SectionInstance,
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OUT VOID **Buffer,
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OUT UINTN *Size
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);
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/**
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Searches all the available firmware volumes and returns the first matching FFS section.
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This function searches all the firmware volumes for FFS files with an FFS filename specified by NameGuid.
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The order in which the firmware volumes are searched is not deterministic. For each FFS file found, a search
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is made for FFS sections of type SectionType. If the FFS file contains at least SectionInstance instances
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of the FFS section specified by SectionType, then the SectionInstance instance is returned in Buffer.
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Buffer is allocated using AllocatePool(), and the size of the allocated buffer is returned in Size.
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It is the caller's responsibility to use FreePool() to free the allocated buffer.
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See EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection() for details on how sections
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are retrieved from an FFS file based on SectionType and SectionInstance.
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If SectionType is EFI_SECTION_TE, and the search with an FFS file fails,
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the search will be retried with a section type of EFI_SECTION_PE32.
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This function must be called with a TPL <= TPL_NOTIFY.
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If NameGuid is NULL, then ASSERT().
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If Buffer is NULL, then ASSERT().
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If Size is NULL, then ASSERT().
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@param NameGuid A pointer to to the FFS filename GUID to search for
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within any of the firmware volumes in the platform.
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@param SectionType Indicates the FFS section type to search for within
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the FFS file specified by NameGuid.
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@param SectionInstance Indicates which section instance within the FFS file
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specified by NameGuid to retrieve.
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@param Buffer On output, a pointer to a callee-allocated buffer
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containing the FFS file section that was found.
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It is the caller's responsibility to free this
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buffer using FreePool().
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@param Size On output, a pointer to the size, in bytes, of Buffer.
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@retval EFI_SUCCESS The specified FFS section was returned.
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@retval EFI_NOT_FOUND The specified FFS section could not be found.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources available to retrieve
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the matching FFS section.
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@retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a
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device error.
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@retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the
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firmware volume that contains the matching FFS
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section does not allow reads.
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**/
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EFI_STATUS
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EFIAPI
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GetSectionFromAnyFv (
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IN CONST EFI_GUID *NameGuid,
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IN EFI_SECTION_TYPE SectionType,
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IN UINTN SectionInstance,
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OUT VOID **Buffer,
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OUT UINTN *Size
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);
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/**
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Searches the firmware volume that the currently executing module was loaded from and returns the first matching FFS section.
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This function searches the firmware volume that the currently executing module was loaded
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from for an FFS file with an FFS filename specified by NameGuid. If the FFS file is found, a search
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is made for FFS sections of type SectionType. If the FFS file contains at least SectionInstance
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instances of the FFS section specified by SectionType, then the SectionInstance instance is returned in Buffer.
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Buffer is allocated using AllocatePool(), and the size of the allocated buffer is returned in Size.
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It is the caller's responsibility to use FreePool() to free the allocated buffer.
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See EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection() for details on how sections are retrieved from
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an FFS file based on SectionType and SectionInstance.
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If the currently executing module was not loaded from a firmware volume, then EFI_NOT_FOUND is returned.
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If SectionType is EFI_SECTION_TE, and the search with an FFS file fails,
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the search will be retried with a section type of EFI_SECTION_PE32.
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This function must be called with a TPL <= TPL_NOTIFY.
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If NameGuid is NULL, then ASSERT().
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If Buffer is NULL, then ASSERT().
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If Size is NULL, then ASSERT().
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@param NameGuid A pointer to to the FFS filename GUID to search for
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within the firmware volumes that the currently
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executing module was loaded from.
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@param SectionType Indicates the FFS section type to search for within
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the FFS file specified by NameGuid.
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@param SectionInstance Indicates which section instance within the FFS
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file specified by NameGuid to retrieve.
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@param Buffer On output, a pointer to a callee allocated buffer
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containing the FFS file section that was found.
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It is the caller's responsibility to free this buffer
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using FreePool().
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@param Size On output, a pointer to the size, in bytes, of Buffer.
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@retval EFI_SUCCESS The specified FFS section was returned.
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@retval EFI_NOT_FOUND The specified FFS section could not be found.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources available to retrieve
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the matching FFS section.
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@retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a
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device error.
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@retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the
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firmware volume that contains the matching FFS
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section does not allow reads.
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**/
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EFI_STATUS
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EFIAPI
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GetSectionFromFv (
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IN CONST EFI_GUID *NameGuid,
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IN EFI_SECTION_TYPE SectionType,
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IN UINTN SectionInstance,
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OUT VOID **Buffer,
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OUT UINTN *Size
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);
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/**
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Searches the FFS file the the currently executing module was loaded from and returns the first matching FFS section.
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This function searches the FFS file that the currently executing module was loaded from for a FFS sections of type SectionType.
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If the FFS file contains at least SectionInstance instances of the FFS section specified by SectionType,
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then the SectionInstance instance is returned in Buffer. Buffer is allocated using AllocatePool(),
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and the size of the allocated buffer is returned in Size. It is the caller's responsibility
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to use FreePool() to free the allocated buffer. See EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection() for
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details on how sections are retrieved from an FFS file based on SectionType and SectionInstance.
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If the currently executing module was not loaded from an FFS file, then EFI_NOT_FOUND is returned.
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If SectionType is EFI_SECTION_TE, and the search with an FFS file fails,
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the search will be retried with a section type of EFI_SECTION_PE32.
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This function must be called with a TPL <= TPL_NOTIFY.
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If Buffer is NULL, then ASSERT().
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If Size is NULL, then ASSERT().
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@param SectionType Indicates the FFS section type to search for within
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the FFS file that the currently executing module
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was loaded from.
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@param SectionInstance Indicates which section instance to retrieve within
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the FFS file that the currently executing module
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was loaded from.
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@param Buffer On output, a pointer to a callee allocated buffer
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containing the FFS file section that was found.
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It is the caller's responsibility to free this buffer
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using FreePool().
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@param Size On output, a pointer to the size, in bytes, of Buffer.
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@retval EFI_SUCCESS The specified FFS section was returned.
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@retval EFI_NOT_FOUND The specified FFS section could not be found.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources available to retrieve
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the matching FFS section.
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@retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a
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device error.
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@retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the
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firmware volume that contains the matching FFS
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section does not allow reads.
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**/
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EFI_STATUS
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EFIAPI
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GetSectionFromFfs (
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IN EFI_SECTION_TYPE SectionType,
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IN UINTN SectionInstance,
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OUT VOID **Buffer,
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OUT UINTN *Size
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);
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/**
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Get the image file buffer data and buffer size by its device path.
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Access the file either from a firmware volume, from a file system interface,
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or from the load file interface.
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Allocate memory to store the found image. The caller is responsible to free memory.
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If FilePath is NULL, then NULL is returned.
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If FileSize is NULL, then NULL is returned.
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If AuthenticationStatus is NULL, then NULL is returned.
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@param[in] BootPolicy The policy for Open Image File.If TRUE,
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indicates that the request originates from
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the boot manager, and that the boot manager is
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attempting to load FilePath as a boot selection.
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If FALSE, then FilePath must match an exact
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file to be loaded.
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@param[in] FilePath Pointer to the device path of the file that is abstracted to
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the file buffer.
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@param[out] FileSize Pointer to the size of the abstracted file buffer.
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@param[out] AuthenticationStatus Pointer to the authentication status.
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@retval NULL FilePath is NULL, or FileSize is NULL, or AuthenticationStatus is NULL, or the file can't be found.
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@retval other The abstracted file buffer. The caller is responsible to free memory.
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**/
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VOID *
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EFIAPI
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GetFileBufferByFilePath (
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IN BOOLEAN BootPolicy,
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IN CONST EFI_DEVICE_PATH_PROTOCOL *FilePath,
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OUT UINTN *FileSize,
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OUT UINT32 *AuthenticationStatus
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);
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/**
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Searches all the available firmware volumes and returns the file device path of first matching
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FFS section.
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This function searches all the firmware volumes for FFS files with an FFS filename specified by NameGuid.
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The order that the firmware volumes is searched is not deterministic. For each FFS file found a search
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is made for FFS sections of type SectionType.
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If SectionType is EFI_SECTION_TE, and the search with an FFS file fails,
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the search will be retried with a section type of EFI_SECTION_PE32.
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This function must be called with a TPL <= TPL_NOTIFY.
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If NameGuid is NULL, then ASSERT().
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@param NameGuid A pointer to to the FFS filename GUID to search for
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within any of the firmware volumes in the platform.
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@param SectionType Indicates the FFS section type to search for within
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the FFS file specified by NameGuid.
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@param SectionInstance Indicates which section instance within the FFS file
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specified by NameGuid to retrieve.
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@param FvFileDevicePath Device path for the target FFS
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file.
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@retval EFI_SUCCESS The specified file device path of FFS section was returned.
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@retval EFI_NOT_FOUND The specified file device path of FFS section could not be found.
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@retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a
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device error.
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@retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the
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firmware volume that contains the matching FFS section does not
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allow reads.
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@retval EFI_INVALID_PARAMETER FvFileDevicePath is NULL.
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**/
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EFI_STATUS
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EFIAPI
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GetFileDevicePathFromAnyFv (
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IN CONST EFI_GUID *NameGuid,
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IN EFI_SECTION_TYPE SectionType,
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IN UINTN SectionInstance,
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OUT EFI_DEVICE_PATH_PROTOCOL **FvFileDevicePath
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);
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/**
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Allocates one or more 4KB pages of a given type from a memory region that is
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accessible to PEI.
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Allocates the number of 4KB pages of type 'MemoryType' and returns a
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pointer to the allocated buffer. The buffer returned is aligned on a 4KB
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boundary. If Pages is 0, then NULL is returned. If there is not enough
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memory remaining to satisfy the request, then NULL is returned.
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@param[in] MemoryType The memory type to allocate
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@param[in] Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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EFIAPI
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AllocatePeiAccessiblePages (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages
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);
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#endif
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