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https://github.com/CloverHackyColor/CloverBootloader.git
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239 lines
8.6 KiB
C
239 lines
8.6 KiB
C
/** @file
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Firmware Volume Block protocol functions.
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Consumes FV hobs and creates appropriate block protocols.
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Copyright (c) 2006 - 2012, 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 _FWVOL_BLOCK_H_
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#define _FWVOL_BLOCK_H_
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#define FVB_DEVICE_SIGNATURE SIGNATURE_32('_','F','V','B')
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typedef struct {
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UINTN Base;
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UINTN Length;
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} LBA_CACHE;
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typedef struct {
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MEMMAP_DEVICE_PATH MemMapDevPath;
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EFI_DEVICE_PATH_PROTOCOL EndDevPath;
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} FV_MEMMAP_DEVICE_PATH;
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//
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// UEFI Specification define FV device path format if FV provide name guid in extension header
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//
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typedef struct {
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MEDIA_FW_VOL_DEVICE_PATH FvDevPath;
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EFI_DEVICE_PATH_PROTOCOL EndDevPath;
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} FV_PIWG_DEVICE_PATH;
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typedef struct {
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UINTN Signature;
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EFI_HANDLE Handle;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL FwVolBlockInstance;
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UINTN NumBlocks;
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LBA_CACHE *LbaCache;
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UINT32 FvbAttributes;
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EFI_PHYSICAL_ADDRESS BaseAddress;
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UINT32 AuthenticationStatus;
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} EFI_FW_VOL_BLOCK_DEVICE;
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#define FVB_DEVICE_FROM_THIS(a) \
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CR(a, EFI_FW_VOL_BLOCK_DEVICE, FwVolBlockInstance, FVB_DEVICE_SIGNATURE)
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/**
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Retrieves Volume attributes. No polarity translations are done.
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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_SUCCESS The firmware volume attributes were returned.
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**/
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EFI_STATUS
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EFIAPI
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FwVolBlockGetAttributes (
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IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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OUT EFI_FVB_ATTRIBUTES_2 *Attributes
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);
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/**
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Modifies the current settings of the firmware volume according to the input parameter.
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@param This Calling context
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@param Attributes input buffer which contains attributes
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@retval EFI_SUCCESS The firmware volume attributes were returned.
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@retval EFI_INVALID_PARAMETER The attributes requested are in conflict with
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the capabilities as declared in the firmware
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volume header.
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@retval EFI_UNSUPPORTED Not supported.
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**/
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EFI_STATUS
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EFIAPI
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FwVolBlockSetAttributes (
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IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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IN CONST EFI_FVB_ATTRIBUTES_2 *Attributes
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);
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/**
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The EraseBlock() function erases one or more blocks as denoted by the
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variable argument list. The entire parameter list of blocks must be verified
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prior to erasing any blocks. If a block is requested that does not exist
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within the associated firmware volume (it has a larger index than the last
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block of the firmware volume), the EraseBlock() function must return
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EFI_INVALID_PARAMETER without modifying the contents of the firmware volume.
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@param This Calling context
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@param ... Starting LBA followed by Number of Lba to erase.
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a -1 to terminate the list.
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@retval EFI_SUCCESS The erase request was successfully completed.
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@retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled
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state.
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@retval EFI_DEVICE_ERROR The block device is not functioning correctly
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and could not be written. The firmware device
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may have been partially erased.
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@retval EFI_INVALID_PARAMETER One or more of the LBAs listed in the variable
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argument list do
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@retval EFI_UNSUPPORTED Not supported.
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**/
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EFI_STATUS
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EFIAPI
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FwVolBlockEraseBlock (
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IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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...
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);
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/**
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Read the specified number of bytes from the block to the input buffer.
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@param This Indicates the calling context.
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@param Lba The starting logical block index to read.
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@param Offset Offset into the block at which to begin reading.
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@param NumBytes Pointer to a UINT32. At entry, *NumBytes
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contains the total size of the buffer. At exit,
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*NumBytes contains the total number of bytes
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actually read.
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@param Buffer Pinter to a caller-allocated buffer that
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contains the destine for the read.
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@retval EFI_SUCCESS The firmware volume was read successfully.
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@retval EFI_BAD_BUFFER_SIZE The read was attempted across an LBA boundary.
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@retval EFI_ACCESS_DENIED Access denied.
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@retval EFI_DEVICE_ERROR The block device is malfunctioning and could not
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be read.
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**/
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EFI_STATUS
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EFIAPI
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FwVolBlockReadBlock (
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IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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IN CONST EFI_LBA Lba,
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IN CONST UINTN Offset,
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IN OUT UINTN *NumBytes,
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IN OUT UINT8 *Buffer
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);
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/**
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Writes the specified number of bytes from the input buffer to the block.
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@param This Indicates the calling context.
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@param Lba The starting logical block index to write to.
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@param Offset Offset into the block at which to begin writing.
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@param NumBytes Pointer to a UINT32. At entry, *NumBytes
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contains the total size of the buffer. At exit,
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*NumBytes contains the total number of bytes
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actually written.
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@param Buffer Pinter to a caller-allocated buffer that
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contains the source for the write.
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@retval EFI_SUCCESS The firmware volume was written successfully.
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@retval EFI_BAD_BUFFER_SIZE The write was attempted across an LBA boundary.
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On output, NumBytes contains the total number of
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bytes actually written.
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@retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled
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state.
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@retval EFI_DEVICE_ERROR The block device is malfunctioning and could not
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be written.
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@retval EFI_UNSUPPORTED Not supported.
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**/
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EFI_STATUS
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EFIAPI
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FwVolBlockWriteBlock (
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IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN OUT UINTN *NumBytes,
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IN UINT8 *Buffer
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);
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/**
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Get Fvb's base address.
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@param This Indicates the calling context.
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@param Address Fvb device base address.
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@retval EFI_SUCCESS Successfully got Fvb's base address.
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@retval EFI_UNSUPPORTED Not supported.
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**/
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EFI_STATUS
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EFIAPI
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FwVolBlockGetPhysicalAddress (
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IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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OUT EFI_PHYSICAL_ADDRESS *Address
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);
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/**
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Retrieves the size in bytes of a specific block within a firmware volume.
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@param This Indicates the calling context.
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@param Lba Indicates the block for which to return the
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size.
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@param BlockSize Pointer to a caller-allocated UINTN in which the
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size of the block is returned.
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@param NumberOfBlocks Pointer to a caller-allocated UINTN in which the
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number of consecutive blocks starting with Lba
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is returned. All blocks in this range have a
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size of BlockSize.
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@retval EFI_SUCCESS The firmware volume base address is returned.
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@retval EFI_INVALID_PARAMETER The requested LBA is out of range.
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**/
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EFI_STATUS
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EFIAPI
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FwVolBlockGetBlockSize (
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IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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IN CONST EFI_LBA Lba,
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IN OUT UINTN *BlockSize,
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IN OUT UINTN *NumberOfBlocks
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);
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#endif
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