mirror of https://github.com/acidanthera/audk.git
322 lines
11 KiB
C
322 lines
11 KiB
C
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/** @file
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This file declares Firmware Volume protocol.
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Copyright (c) 2006, Intel Corporation
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All rights reserved. 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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Module Name: FirmwareVolume.h
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@par Revision Reference:
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This protocol is defined in Firmware Volume specification.
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Version 0.9
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**/
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#ifndef __FIRMWARE_VOLUME_H__
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#define __FIRMWARE_VOLUME_H__
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//
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// Firmware Volume Protocol GUID definition
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//
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#define EFI_FIRMWARE_VOLUME_PROTOCOL_GUID \
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{ \
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0x389F751F, 0x1838, 0x4388, {0x83, 0x90, 0xCD, 0x81, 0x54, 0xBD, 0x27, 0xF8 } \
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}
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#define FV_DEVICE_SIGNATURE EFI_SIGNATURE_32 ('_', 'F', 'V', '_')
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typedef struct _EFI_FIRMWARE_VOLUME_PROTOCOL EFI_FIRMWARE_VOLUME_PROTOCOL;
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//
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// EFI_FV_ATTRIBUTES bit definitions
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//
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typedef UINT64 EFI_FV_ATTRIBUTES;
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//
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// ************************************************************
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// EFI_FV_ATTRIBUTES bit definitions
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// ************************************************************
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//
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#define EFI_FV_READ_DISABLE_CAP 0x0000000000000001ULL
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#define EFI_FV_READ_ENABLE_CAP 0x0000000000000002ULL
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#define EFI_FV_READ_STATUS 0x0000000000000004ULL
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#define EFI_FV_WRITE_DISABLE_CAP 0x0000000000000008ULL
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#define EFI_FV_WRITE_ENABLE_CAP 0x0000000000000010ULL
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#define EFI_FV_WRITE_STATUS 0x0000000000000020ULL
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#define EFI_FV_LOCK_CAP 0x0000000000000040ULL
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#define EFI_FV_LOCK_STATUS 0x0000000000000080ULL
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#define EFI_FV_WRITE_POLICY_RELIABLE 0x0000000000000100ULL
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#define EFI_FV_ALIGNMENT_CAP 0x0000000000008000ULL
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#define EFI_FV_ALIGNMENT_2 0x0000000000010000ULL
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#define EFI_FV_ALIGNMENT_4 0x0000000000020000ULL
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#define EFI_FV_ALIGNMENT_8 0x0000000000040000ULL
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#define EFI_FV_ALIGNMENT_16 0x0000000000080000ULL
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#define EFI_FV_ALIGNMENT_32 0x0000000000100000ULL
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#define EFI_FV_ALIGNMENT_64 0x0000000000200000ULL
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#define EFI_FV_ALIGNMENT_128 0x0000000000400000ULL
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#define EFI_FV_ALIGNMENT_256 0x0000000000800000ULL
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#define EFI_FV_ALIGNMENT_512 0x0000000001000000ULL
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#define EFI_FV_ALIGNMENT_1K 0x0000000002000000ULL
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#define EFI_FV_ALIGNMENT_2K 0x0000000004000000ULL
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#define EFI_FV_ALIGNMENT_4K 0x0000000008000000ULL
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#define EFI_FV_ALIGNMENT_8K 0x0000000010000000ULL
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#define EFI_FV_ALIGNMENT_16K 0x0000000020000000ULL
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#define EFI_FV_ALIGNMENT_32K 0x0000000040000000ULL
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#define EFI_FV_ALIGNMENT_64K 0x0000000080000000ULL
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//
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// Protocol API definitions
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//
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/**
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Retrieves attributes, insures positive polarity of attribute bits, returns
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resulting attributes in output parameter
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@param This Calling context
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@param Attributes output buffer which contains attributes
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@retval EFI_INVALID_PARAMETER
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@retval EFI_SUCCESS
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FV_GET_ATTRIBUTES) (
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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OUT EFI_FV_ATTRIBUTES *Attributes
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);
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/**
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Sets volume attributes
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@param This Calling context
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@param Attributes Buffer which contains attributes
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@retval EFI_INVALID_PARAMETER
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@retval EFI_DEVICE_ERROR
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@retval EFI_SUCCESS
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FV_SET_ATTRIBUTES) (
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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IN OUT EFI_FV_ATTRIBUTES *Attributes
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);
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typedef UINT32 EFI_FV_FILE_ATTRIBUTES;
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#define EFI_FV_FILE_ATTRIB_ALIGNMENT 0x0000001F
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/**
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Read the requested file (NameGuid) and returns data in Buffer.
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@param This Calling context
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@param NameGuid Filename identifying which file to read
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@param Buffer Pointer to pointer to buffer in which contents of file are returned.
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<br>
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If Buffer is NULL, only type, attributes, and size are returned as
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there is no output buffer.
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<br>
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If Buffer != NULL and *Buffer == NULL, the output buffer is allocated
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from BS pool by ReadFile
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<br>
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If Buffer != NULL and *Buffer != NULL, the output buffer has been
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allocated by the caller and is being passed in.
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@param BufferSize Indicates the buffer size passed in, and on output the size
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required to complete the read
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@param FoundType Indicates the type of the file who's data is returned
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@param FileAttributes Indicates the attributes of the file who's data is resturned
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@param AuthenticationStatus Indicates the authentication status of the data
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@retval EFI_SUCCESS
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@retval EFI_WARN_BUFFER_TOO_SMALL
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@retval EFI_NOT_FOUND
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@retval EFI_DEVICE_ERROR
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@retval EFI_ACCESS_DENIED
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FV_READ_FILE) (
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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IN EFI_GUID *NameGuid,
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IN OUT VOID **Buffer,
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IN OUT UINTN *BufferSize,
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OUT EFI_FV_FILETYPE *FoundType,
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OUT EFI_FV_FILE_ATTRIBUTES *FileAttributes,
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OUT UINT32 *AuthenticationStatus
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);
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/**
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Read the requested section from the specified file and returns data in Buffer.
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@param This Calling context
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@param NameGuid Filename identifying the file from which to read
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@param SectionType Indicates what section type to retrieve
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@param SectionInstance Indicates which instance of SectionType to retrieve
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@param Buffer Pointer to pointer to buffer in which contents of file are returned.
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<br>
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If Buffer is NULL, only type, attributes, and size are returned as
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there is no output buffer.
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<br>
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If Buffer != NULL and *Buffer == NULL, the output buffer is allocated
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from BS pool by ReadFile
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<br>
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If Buffer != NULL and *Buffer != NULL, the output buffer has been
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allocated by the caller and is being passed in.
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@param BufferSize Indicates the buffer size passed in, and on output the size
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required to complete the read
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@param AuthenticationStatus Indicates the authentication status of the data
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@retval EFI_SUCCESS
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@retval EFI_WARN_BUFFER_TOO_SMALL
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@retval EFI_OUT_OF_RESOURCES
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@retval EFI_NOT_FOUND
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@retval EFI_DEVICE_ERROR
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@retval EFI_ACCESS_DENIED
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FV_READ_SECTION) (
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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IN EFI_GUID *NameGuid,
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IN EFI_SECTION_TYPE SectionType,
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IN UINTN SectionInstance,
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IN OUT VOID **Buffer,
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IN OUT UINTN *BufferSize,
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OUT UINT32 *AuthenticationStatus
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);
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typedef UINT32 EFI_FV_WRITE_POLICY;
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#define EFI_FV_UNRELIABLE_WRITE 0x00000000
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#define EFI_FV_RELIABLE_WRITE 0x00000001
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typedef struct {
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EFI_GUID *NameGuid;
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EFI_FV_FILETYPE Type;
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EFI_FV_FILE_ATTRIBUTES FileAttributes;
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VOID *Buffer;
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UINT32 BufferSize;
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} EFI_FV_WRITE_FILE_DATA;
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/**
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Write the supplied file (NameGuid) to the FV.
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@param This Calling context
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@param NumberOfFiles Indicates the number of file records pointed to by FileData
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@param WritePolicy Indicates the level of reliability of the write with respect to
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things like power failure events.
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@param FileData A pointer to an array of EFI_FV_WRITE_FILE_DATA structures. Each
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element in the array indicates a file to write, and there are
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NumberOfFiles elements in the input array.
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@retval EFI_SUCCESS
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@retval EFI_OUT_OF_RESOURCES
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@retval EFI_DEVICE_ERROR
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@retval EFI_WRITE_PROTECTED
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@retval EFI_NOT_FOUND
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@retval EFI_INVALID_PARAMETER
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FV_WRITE_FILE) (
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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IN UINT32 NumberOfFiles,
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IN EFI_FV_WRITE_POLICY WritePolicy,
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IN EFI_FV_WRITE_FILE_DATA *FileData
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);
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/**
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Given the input key, search for the next matching file in the volume.
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@param This Calling context
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@param Key Pointer to a caller allocated buffer that contains an implementation
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specific key that is used to track where to begin searching on
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successive calls.
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@param FileType Indicates the file type to filter for
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@param NameGuid Guid filename of the file found
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@param Attributes Attributes of the file found
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@param Size Size in bytes of the file found
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@retval EFI_SUCCESS
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@retval EFI_NOT_FOUND
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@retval EFI_DEVICE_ERROR
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@retval EFI_ACCESS_DENIED
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FV_GET_NEXT_FILE) (
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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IN OUT VOID *Key,
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IN OUT EFI_FV_FILETYPE *FileType,
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OUT EFI_GUID *NameGuid,
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OUT EFI_FV_FILE_ATTRIBUTES *Attributes,
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OUT UINTN *Size
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);
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/**
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@par Protocol Description:
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The Firmware Volume Protocol provides file-level access to the firmware volume.
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Each firmware volume driver must produce an instance of the Firmware Volume
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Protocol if the firmware volume is to be visible to the system. The Firmware
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Volume Protocol also provides mechanisms for determining and modifying some
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attributes of the firmware volume.
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@param GetVolumeAttributes
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Retrieves volume capabilities and current settings.
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@param SetVolumeAttributes
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Modifies the current settings of the firmware volume.
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@param ReadFile
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Reads an entire file from the firmware volume.
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@param ReadSection
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Reads a single section from a file into a buffer.
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@param WriteFile
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Writes an entire file into the firmware volume.
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@param GetNextFile
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Provides service to allow searching the firmware volume.
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@param KeySize
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Data field that indicates the size in bytes of the Key input buffer for
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the GetNextFile() API.
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@param ParentHandle
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Handle of the parent firmware volume.
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**/
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struct _EFI_FIRMWARE_VOLUME_PROTOCOL {
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EFI_FV_GET_ATTRIBUTES GetVolumeAttributes;
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EFI_FV_SET_ATTRIBUTES SetVolumeAttributes;
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EFI_FV_READ_FILE ReadFile;
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EFI_FV_READ_SECTION ReadSection;
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EFI_FV_WRITE_FILE WriteFile;
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EFI_FV_GET_NEXT_FILE GetNextFile;
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UINT32 KeySize;
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EFI_HANDLE ParentHandle;
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};
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extern EFI_GUID gEfiFirmwareVolumeProtocolGuid;
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#endif
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