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Diffstat (limited to 'IntelFrameworkPkg/Include/Protocol/FrameworkFirmwareVolumeBlock.h')
| -rw-r--r-- | IntelFrameworkPkg/Include/Protocol/FrameworkFirmwareVolumeBlock.h | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/IntelFrameworkPkg/Include/Protocol/FrameworkFirmwareVolumeBlock.h b/IntelFrameworkPkg/Include/Protocol/FrameworkFirmwareVolumeBlock.h new file mode 100644 index 0000000000..0d75e4b8f3 --- /dev/null +++ b/IntelFrameworkPkg/Include/Protocol/FrameworkFirmwareVolumeBlock.h @@ -0,0 +1,354 @@ +/** @file
+ This file provides control over block-oriented firmware devices.
+
+ Copyright (c) 2006 - 2008, Intel Corporation
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ @par Revision Reference:
+ This protocol is defined in framework spec: Firmware Volume Block specification
+
+**/
+
+#ifndef __FRAMEWORK_FIRMWARE_VOLUME_BLOCK_H__
+#define __FRAMEWORK_FIRMWARE_VOLUME_BLOCK_H__
+
+#include <PiDxe.h>
+
+typedef struct _FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL;
+///
+/// type of EFI FVB attribute per Frameowrk spec
+///
+typedef UINT32 EFI_FVB_ATTRIBUTES;
+
+/**
+ The GetAttributes() function retrieves the attributes and
+ current settings of the block. Status Codes Returned
+
+ @param This Indicates the FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL instance.
+
+ @param Attributes Pointer to EFI_FVB_ATTRIBUTES in which the
+ attributes and current settings are
+ returned.
+
+ @retval EFI_SUCCESS The firmware volume attributes were
+ returned.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * FRAMEWORK_EFI_FVB_GET_ATTRIBUTES)(
+ IN FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
+ OUT EFI_FVB_ATTRIBUTES *Attributes
+);
+
+
+/**
+ The SetAttributes() function sets configurable firmware volume
+ attributes and returns the new settings of the firmware volume.
+
+ @param This Indicates the FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL instance.
+
+ @param Attributes On input, Attributes is a pointer to
+ EFI_FVB_ATTRIBUTES that contains the
+ desired firmware volume settings. On
+ successful return, it contains the new
+ settings of the firmware volume.
+
+ @retval EFI_SUCCESS The firmware volume attributes were returned.
+
+ @retval EFI_INVALID_PARAMETER The attributes requested are in
+ conflict with the capabilities
+ as declared in the firmware
+ volume header.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * FRAMEWORK_EFI_FVB_SET_ATTRIBUTES)(
+ IN FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
+ IN OUT EFI_FVB_ATTRIBUTES *Attributes
+);
+
+
+/**
+ The GetPhysicalAddress() function retrieves the base address of
+ a memory-mapped firmware volume. This function should be called
+ only for memory-mapped firmware volumes.
+
+ @param This Indicates the FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL instance.
+
+ @param Address Pointer to a caller-allocated
+ EFI_PHYSICAL_ADDRESS that, on successful
+ return from GetPhysicalAddress(), contains the
+ base address of the firmware volume.
+
+ @retval EFI_SUCCESS The firmware volume base address is returned.
+
+ @retval EFI_NOT_SUPPORTED The firmware volume is not memory mapped.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * FRAMEWORK_EFI_FVB_GET_PHYSICAL_ADDRESS)(
+ IN FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
+ OUT EFI_PHYSICAL_ADDRESS *Address
+);
+
+/**
+ The GetBlockSize() function retrieves the size of the requested
+ block. It also returns the number of additional blocks with
+ the identical size. The GetBlockSize() function is used to
+ retrieve the block map (see EFI_FIRMWARE_VOLUME_HEADER).
+
+
+ @param This Indicates the FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL instance.
+
+ @param Lba Indicates the block for which to return the size.
+
+ @param BlockSize Pointer to a caller-allocated UINTN in which
+ the size of the block is returned.
+
+ @param NumberOfBlocks Pointer to a caller-allocated UINTN in
+ which the number of consecutive blocks,
+ starting with Lba, is returned. All
+ blocks in this range have a size of
+ BlockSize.
+
+
+ @retval EFI_SUCCESS The firmware volume base address is returned.
+
+ @retval EFI_INVALID_PARAMETER The requested LBA is out of range.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * FRAMEWORK_EFI_FVB_GET_BLOCK_SIZE)(
+ IN FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ OUT UINTN *BlockSize,
+ OUT UINTN *NumberOfBlocks
+);
+
+
+/**
+ Reads the specified number of bytes into a buffer from the specified block.
+
+ The Read() function reads the requested number of bytes from the
+ requested block and stores them in the provided buffer.
+ Implementations should be mindful that the firmware volume
+ might be in the ReadDisabled state. If it is in this state,
+ the Read() function must return the status code
+ EFI_ACCESS_DENIED without modifying the contents of the
+ buffer. The Read() function must also prevent spanning block
+ boundaries. If a read is requested that would span a block
+ boundary, the read must read up to the boundary but not
+ beyond. The output parameter NumBytes must be set to correctly
+ indicate the number of bytes actually read. The caller must be
+ aware that a read may be partially completed.
+
+ @param This Indicates the FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL instance.
+
+ @param Lba The starting logical block index
+ from which to read.
+
+ @param Offset Offset into the block at which to begin reading.
+
+ @param NumBytes Pointer to a UINTN. At entry, *NumBytes
+ contains the total size of the buffer. At
+ exit, *NumBytes contains the total number of
+ bytes read.
+
+ @param Buffer Pointer to a caller-allocated buffer that will
+ be used to hold the data that is read.
+
+ @retval EFI_SUCCESS The firmware volume was read successfully
+ and contents are in Buffer.
+
+ @retval EFI_BAD_BUFFER_SIZE Read attempted across an LBA
+ boundary. On output, NumBytes
+ contains the total number of bytes
+ returned in Buffer.
+
+ @retval EFI_ACCESS_DENIED The firmware volume is in the
+ ReadDisabled state.
+
+ @retval EFI_DEVICE_ERROR The block device is not
+ functioning correctly and could
+ not be read.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *FRAMEWORK_EFI_FVB_READ)(
+ IN FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ IN UINTN Offset,
+ IN OUT UINTN *NumBytes,
+ IN OUT UINT8 *Buffer
+);
+
+/**
+ Writes the specified number of bytes from the input buffer to the block.
+
+ The Write() function writes the specified number of bytes from
+ the provided buffer to the specified block and offset. If the
+ firmware volume is sticky write, the caller must ensure that
+ all the bits of the specified range to write are in the
+ EFI_FVB_ERASE_POLARITY state before calling the Write()
+ function, or else the result will be unpredictable. This
+ unpredictability arises because, for a sticky-write firmware
+ volume, a write may negate a bit in the EFI_FVB_ERASE_POLARITY
+ state but cannot flip it back again. In general, before
+ calling the Write() function, the caller should call the
+ EraseBlocks() function first to erase the specified block to
+ write. A block erase cycle will transition bits from the
+ (NOT)EFI_FVB_ERASE_POLARITY state back to the
+ EFI_FVB_ERASE_POLARITY state. Implementations should be
+ mindful that the firmware volume might be in the WriteDisabled
+ state. If it is in this state, the Write() function must
+ return the status code EFI_ACCESS_DENIED without modifying the
+ contents of the firmware volume. The Write() function must
+ also prevent spanning block boundaries. If a write is
+ requested that spans a block boundary, the write must store up
+ to the boundary but not beyond. The output parameter NumBytes
+ must be set to correctly indicate the number of bytes actually
+ written. The caller must be aware that a write may be
+ partially completed. All writes, partial or otherwise, must be
+ fully flushed to the hardware before the Write() service
+ returns.
+
+ @param This Indicates the FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL instance.
+
+ @param Lba The starting logical block index to write to.
+
+ @param Offset Offset into the block at which to begin writing.
+
+ @param NumBytes Pointer to a UINTN. At entry, *NumBytes
+ contains the total size of the buffer. At
+ exit, *NumBytes contains the total number of
+ bytes actually written.
+
+ @param Buffer Pointer to a caller-allocated buffer that
+ contains the source for the write.
+
+ @retval EFI_SUCCESS The firmware volume was written successfully.
+
+ @retval EFI_BAD_BUFFER_SIZE The write was attempted across an
+ LBA boundary. On output, NumBytes
+ contains the total number of bytes
+ actually written.
+
+ @retval EFI_ACCESS_DENIED The firmware volume is in the
+ WriteDisabled state.
+
+ @retval EFI_DEVICE_ERROR The block device is malfunctioning
+ and could not be written.
+
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * FRAMEWORK_EFI_FVB_WRITE)(
+ IN FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ IN UINTN Offset,
+ IN OUT UINTN *NumBytes,
+ IN UINT8 *Buffer
+);
+
+
+
+
+///
+/// EFI_LBA_LIST_TERMINATOR
+///
+#define FRAMEWORK_EFI_LBA_LIST_TERMINATOR 0xFFFFFFFFFFFFFFFFULL
+
+
+/**
+ Erases and initializes a firmware volume block.
+
+ The EraseBlocks() function erases one or more blocks as denoted
+ by the variable argument list. The entire parameter list of
+ blocks must be verified before erasing any blocks. If a block is
+ requested that does not exist within the associated firmware
+ volume (it has a larger index than the last block of the
+ firmware volume), the EraseBlocks() function must return the
+ status code EFI_INVALID_PARAMETER without modifying the contents
+ of the firmware volume. Implementations should be mindful that
+ the firmware volume might be in the WriteDisabled state. If it
+ is in this state, the EraseBlocks() function must return the
+ status code EFI_ACCESS_DENIED without modifying the contents of
+ the firmware volume. All calls to EraseBlocks() must be fully
+ flushed to the hardware before the EraseBlocks() service
+ returns.
+
+ @param This Indicates the FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL
+ instance.
+
+ @param ... The variable argument list is a list of tuples.
+ Each tuple describes a range of LBAs to erase
+ and consists of the following:
+ - An EFI_LBA that indicates the starting LBA
+ - A UINTN that indicates the number of blocks to
+ erase
+
+ The list is terminated with an
+ EFI_LBA_LIST_TERMINATOR. For example, the
+ following indicates that two ranges of blocks
+ (5-7 and 10-11) are to be erased: EraseBlocks
+ (This, 5, 3, 10, 2, EFI_LBA_LIST_TERMINATOR);
+
+ @retval EFI_SUCCESS The erase request was successfully
+ completed.
+
+ @retval EFI_ACCESS_DENIED The firmware volume is in the
+ WriteDisabled state.
+ @retval EFI_DEVICE_ERROR The block device is not functioning
+ correctly and could not be written.
+ The firmware device may have been
+ partially erased.
+ @retval EFI_INVALID_PARAMETER One or more of the LBAs listed
+ in the variable argument list do
+ not exist in the firmware volume.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * FRAMEWORK_EFI_FVB_ERASE_BLOCKS)(
+ IN FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
+ ...
+);
+
+///
+/// The Firmware Volume Block Protocol is the low-level interface
+/// to a firmware volume. File-level access to a firmware volume
+/// should not be done using the Firmware Volume Block Protocol.
+/// Normal access to a firmware volume must use the Firmware
+/// Volume Protocol. Typically, only the file system driver that
+/// produces the Firmware Volume Protocol will bind to the
+/// Firmware Volume Block Protocol.
+///
+struct _FRAMEWORK_EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL {
+ FRAMEWORK_EFI_FVB_GET_ATTRIBUTES GetAttributes;
+ FRAMEWORK_EFI_FVB_SET_ATTRIBUTES SetAttributes;
+ FRAMEWORK_EFI_FVB_GET_PHYSICAL_ADDRESS GetPhysicalAddress;
+ FRAMEWORK_EFI_FVB_GET_BLOCK_SIZE GetBlockSize;
+ FRAMEWORK_EFI_FVB_READ Read;
+ FRAMEWORK_EFI_FVB_WRITE Write;
+ FRAMEWORK_EFI_FVB_ERASE_BLOCKS EraseBlocks;
+ ///
+ /// Handle of the parent firmware volume.
+ ///
+ EFI_HANDLE ParentHandle;
+};
+
+
+
+#endif
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