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https://github.com/CloverHackyColor/CloverBootloader.git
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83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
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/** @file
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Load File protocol as defined in the UEFI 2.0 specification.
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The 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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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __EFI_LOAD_FILE_PROTOCOL_H__
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#define __EFI_LOAD_FILE_PROTOCOL_H__
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#define EFI_LOAD_FILE_PROTOCOL_GUID \
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{ \
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0x56EC3091, 0x954C, 0x11d2, {0x8E, 0x3F, 0x00, 0xA0, 0xC9, 0x69, 0x72, 0x3B } \
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}
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///
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/// Protocol Guid defined by EFI1.1.
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///
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#define LOAD_FILE_PROTOCOL EFI_LOAD_FILE_PROTOCOL_GUID
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typedef struct _EFI_LOAD_FILE_PROTOCOL EFI_LOAD_FILE_PROTOCOL;
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///
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/// Backward-compatible with EFI1.1
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///
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typedef EFI_LOAD_FILE_PROTOCOL EFI_LOAD_FILE_INTERFACE;
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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 If TRUE, indicates that the request originates from the
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boot manager is attempting to load FilePath as a boot
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selection. If FALSE, then FilePath must match as exact file
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to be loaded.
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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 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 The device does not support the provided BootPolicy
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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 cancelled.
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@retval EFI_WARN_FILE_SYSTEM The resulting Buffer contains UEFI-compliant file system.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_LOAD_FILE)(
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IN EFI_LOAD_FILE_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_FILE_PROTOCOL {
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EFI_LOAD_FILE LoadFile;
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};
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extern EFI_GUID gEfiLoadFileProtocolGuid;
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#endif
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