mirror of https://github.com/acidanthera/audk.git
347 lines
15 KiB
C
347 lines
15 KiB
C
/** @file
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This file declares the Firmware Volume Protocol.
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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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Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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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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@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 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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// FRAMEWORK_EFI_FV_ATTRIBUTES bit definitions
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//
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typedef UINT64 FRAMEWORK_EFI_FV_ATTRIBUTES;
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//
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// ************************************************************
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// FRAMEWORK_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, and returns
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resulting attributes in an output parameter.
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@param This Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
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@param Attributes Output buffer containing attributes.
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@retval EFI_SUCCESS The firmware volume attributes were returned.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *FRAMEWORK_EFI_FV_GET_ATTRIBUTES)(
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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OUT FRAMEWORK_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 Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
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@param Attributes On input, Attributes is a pointer to an
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EFI_FV_ATTRIBUTES containing the desired firmware
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volume settings. On successful return, it contains
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the new settings of the firmware volume. On
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unsuccessful return, Attributes is not modified
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and the firmware volume settings are not changed.
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@retval EFI_INVALID_PARAMETER A bit in Attributes was invalid.
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@retval EFI_SUCCESS The requested firmware volume attributes were set
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and the resulting EFI_FV_ATTRIBUTES is returned in
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Attributes.
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@retval EFI_ACCESS_DENIED The Device is locked and does not permit modification.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *FRAMEWORK_EFI_FV_SET_ATTRIBUTES)(
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IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,
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IN OUT FRAMEWORK_EFI_FV_ATTRIBUTES *Attributes
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);
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/**
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Read the requested file (NameGuid) or file information from the firmware volume
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and returns data in Buffer.
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@param This The EFI_FIRMWARE_VOLUME_PROTOCOL instance.
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@param NameGuid The pointer to EFI_GUID, which is the filename of
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the file to read.
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@param Buffer The 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
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are returned as there is no output buffer.
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<br>
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If Buffer != NULL and *Buffer == NULL, the output
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buffer is allocated from BS pool by ReadFile.
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<br>
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If Buffer != NULL and *Buffer != NULL, the output
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buffer has been allocated by the caller and is being
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passed in.
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@param BufferSize On input: The buffer size. On output: The size
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required to complete the read.
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@param FoundType The pointer to the type of the file whose data
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is returned.
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@param FileAttributes The pointer to attributes of the file whose data
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is returned.
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@param AuthenticationStatus The pointer to the authentication status of the data.
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@retval EFI_SUCCESS The call completed successfully.
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@retval EFI_WARN_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.
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The buffer filled, and the output is truncated.
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@retval EFI_NOT_FOUND NameGuid was not found in the firmware volume.
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@retval EFI_DEVICE_ERROR A hardware error occurred when attempting to
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access the firmware volume.
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@retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.
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@retval EFI_OUT_OF_RESOURCES An allocation failure occurred.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *FRAMEWORK_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 Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
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@param NameGuid Filename identifying the file from which to read.
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@param SectionType The section type to retrieve.
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@param SectionInstance The instance of SectionType to retrieve.
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@param Buffer Pointer to pointer to buffer in which contents of
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a file are returned.
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<br>
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If Buffer is NULL, only type, attributes, and size
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are returned as there is no output buffer.
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<br>
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If Buffer != NULL and *Buffer == NULL, the output
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buffer is allocated from BS pool by ReadFile.
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<br>
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If Buffer != NULL and *Buffer != NULL, the output
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buffer has been allocated by the caller and is being
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passed in.
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@param BufferSize The pointer to the buffer size passed in, and on
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output the size required to complete the read.
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@param AuthenticationStatus The pointer to the authentication status of the data.
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@retval EFI_SUCCESS The call completed successfully.
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@retval EFI_WARN_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.
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The buffer is filled and the output is truncated.
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@retval EFI_OUT_OF_RESOURCES An allocation failure occurred.
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@retval EFI_NOT_FOUND The name was not found in the firmware volume.
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@retval EFI_DEVICE_ERROR A hardware error occurred when attempting to
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access the firmware volume.
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@retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *FRAMEWORK_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 FRAMEWORK_EFI_FV_WRITE_POLICY;
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#define FRAMEWORK_EFI_FV_UNRELIABLE_WRITE 0x00000000
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#define FRAMEWORK_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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} FRAMEWORK_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 Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
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@param NumberOfFiles Indicates the number of file records pointed to
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by FileData.
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@param WritePolicy Indicates the level of reliability of the write
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with respect to things like power failure events.
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@param FileData A pointer to an array of EFI_FV_WRITE_FILE_DATA
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structures. Each element in the array indicates
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a file to write, and there are NumberOfFiles
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elements in the input array.
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@retval EFI_SUCCESS The write completed successfully.
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@retval EFI_OUT_OF_RESOURCES The firmware volume does not have enough free
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space to store file(s).
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@retval EFI_DEVICE_ERROR A hardware error occurred when attempting to
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access the firmware volume.
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@retval EFI_WRITE_PROTECTED The firmware volume is configured to disallow writes.
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@retval EFI_NOT_FOUND A delete was requested, but the requested file was
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not found in the firmware volume.
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@retval EFI_INVALID_PARAMETER A delete was requested with a multiple file write.
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An unsupported WritePolicy was requested.
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An unknown file type was specified.
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A file system specific error has occurred.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *FRAMEWORK_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 FRAMEWORK_EFI_FV_WRITE_POLICY WritePolicy,
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IN FRAMEWORK_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 Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
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@param Key Pointer to a caller allocated buffer that contains
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an implementation-specific key that is used to track
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where to begin searching on successive calls.
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@param FileType The pointer to the file type to filter for.
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@param NameGuid The pointer to Guid filename of the file found.
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@param Attributes The pointer to Attributes of the file found.
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@param Size The pointer to Size in bytes of the file found.
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@retval EFI_SUCCESS The output parameters are filled with data obtained from
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the first matching file that was found.
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@retval EFI_NOT_FOUND No files of type FileType were found.
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@retval EFI_DEVICE_ERROR A hardware error occurred when attempting to access
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the firmware volume.
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@retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *FRAMEWORK_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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// Protocol interface structure
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//
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struct _EFI_FIRMWARE_VOLUME_PROTOCOL {
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///
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/// Retrieves volume capabilities and current settings.
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///
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FRAMEWORK_EFI_FV_GET_ATTRIBUTES GetVolumeAttributes;
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///
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/// Modifies the current settings of the firmware volume.
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///
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FRAMEWORK_EFI_FV_SET_ATTRIBUTES SetVolumeAttributes;
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///
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/// Reads an entire file from the firmware volume.
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///
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FRAMEWORK_EFI_FV_READ_FILE ReadFile;
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///
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/// Reads a single section from a file into a buffer.
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///
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FRAMEWORK_EFI_FV_READ_SECTION ReadSection;
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///
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/// Writes an entire file into the firmware volume.
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///
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FRAMEWORK_EFI_FV_WRITE_FILE WriteFile;
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///
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/// Provides service to allow searching the firmware volume.
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///
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FRAMEWORK_EFI_FV_GET_NEXT_FILE GetNextFile;
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///
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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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///
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UINT32 KeySize;
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///
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/// Handle of the parent firmware volume.
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///
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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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