mirror of https://github.com/acidanthera/audk.git
86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/** @file
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Load File protocol as defined in the UEFI 2.0 specification.
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Load file protocol exists to supports the addition of new boot devices,
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and to support booting from devices that do not map well to file system.
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Network boot is done via a LoadFile protocol.
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UEFI 2.0 can boot from any device that produces a LoadFile protocol.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __EFI_LOAD_FILE2_PROTOCOL_H__
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#define __EFI_LOAD_FILE2_PROTOCOL_H__
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#define EFI_LOAD_FILE2_PROTOCOL_GUID \
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{ \
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0x4006c0c1, 0xfcb3, 0x403e, {0x99, 0x6d, 0x4a, 0x6c, 0x87, 0x24, 0xe0, 0x6d } \
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}
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///
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/// Protocol Guid defined by UEFI2.1.
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///
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#define LOAD_FILE2_PROTOCOL EFI_LOAD_FILE2_PROTOCOL_GUID
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typedef struct _EFI_LOAD_FILE2_PROTOCOL EFI_LOAD_FILE2_PROTOCOL;
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/**
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Causes the driver to load a specified file.
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@param This Protocol instance pointer.
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@param FilePath The device specific path of the file to load.
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@param BootPolicy Should always be FALSE.
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@param BufferSize On input the size of Buffer in bytes. On output with a return
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code of EFI_SUCCESS, the amount of data transferred to
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Buffer. On output with a return code of EFI_BUFFER_TOO_SMALL,
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the size of Buffer required to retrieve the requested file.
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@param Buffer The memory buffer to transfer the file to. IF Buffer is NULL,
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then no the size of the requested file is returned in
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BufferSize.
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@retval EFI_SUCCESS The file was loaded.
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@retval EFI_UNSUPPORTED BootPolicy is TRUE.
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@retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or
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BufferSize is NULL.
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@retval EFI_NO_MEDIA No medium was present to load the file.
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@retval EFI_DEVICE_ERROR The file was not loaded due to a device error.
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@retval EFI_NO_RESPONSE The remote system did not respond.
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@retval EFI_NOT_FOUND The file was not found
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@retval EFI_ABORTED The file load process was manually canceled.
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@retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current
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directory entry. BufferSize has been updated with
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the size needed to complete the request.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_LOAD_FILE2)(
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IN EFI_LOAD_FILE2_PROTOCOL *This,
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IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
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IN BOOLEAN BootPolicy,
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IN OUT UINTN *BufferSize,
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IN VOID *Buffer OPTIONAL
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);
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///
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/// The EFI_LOAD_FILE_PROTOCOL is a simple protocol used to obtain files from arbitrary devices.
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///
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struct _EFI_LOAD_FILE2_PROTOCOL {
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EFI_LOAD_FILE2 LoadFile;
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};
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extern EFI_GUID gEfiLoadFile2ProtocolGuid;
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#endif
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