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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
325 lines
10 KiB
C
325 lines
10 KiB
C
/*++
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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:
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FwVolBlock.h
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Abstract:
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Firmware Volume Block protocol.. Consumes FV hobs and creates
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appropriate block protocols.
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Also consumes NT_NON_MM_FV envinronment variable and produces appropriate
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block protocols fro them also... (this is TBD)
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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 EFI_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_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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FV_DEVICE_PATH 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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} 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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EFI_STATUS
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EFIAPI
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FwVolBlockDriverInit (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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This routine is the driver initialization entry point. It initializes the
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libraries, consumes FV hobs and NT_NON_MM_FV environment variable and
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produces instances of FW_VOL_BLOCK_PROTOCOL as appropriate.
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Arguments:
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ImageHandle - The image handle.
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SystemTable - The system table.
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Returns:
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EFI_SUCCESS - Successfully initialized firmware volume block driver.
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--*/
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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 EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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OUT EFI_FVB_ATTRIBUTES *Attributes
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)
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/*++
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Routine Description:
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Retrieves Volume attributes. No polarity translations are done.
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Arguments:
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This - Calling context
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Attributes - output buffer which contains attributes
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Returns:
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EFI_SUCCESS - The firmware volume attributes were returned.
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--*/
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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 EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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OUT EFI_FVB_ATTRIBUTES *Attributes
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)
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/*++
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Routine Description:
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Modifies the current settings of the firmware volume according to the input parameter.
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Arguments:
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This - Calling context
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Attributes - input buffer which contains attributes
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Returns:
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EFI_SUCCESS - The firmware volume attributes were returned.
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EFI_INVALID_PARAMETER - The attributes requested are in conflict with the capabilities as
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declared in the firmware volume header.
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EFI_UNSUPPORTED - Not supported.
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--*/
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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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Routine Description:
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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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Arguments:
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This - Calling context
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... - Starting LBA followed by Number of Lba to erase. a -1 to terminate
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the list.
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Returns:
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EFI_SUCCESS - The erase request was successfully completed.
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EFI_ACCESS_DENIED - The firmware volume is in the WriteDisabled state.
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EFI_DEVICE_ERROR - The block device is not functioning correctly and could not be
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written. The firmware device may have been partially erased.
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EFI_INVALID_PARAMETER - One or more of the LBAs listed in the variable argument list do
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EFI_UNSUPPORTED - Not supported.
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--*/
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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 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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Routine Description:
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Read the specified number of bytes from the block to the input buffer.
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Arguments:
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This - Indicates the calling context.
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Lba - The starting logical block index to read.
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Offset - Offset into the block at which to begin reading.
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NumBytes - Pointer to a UINT32. At entry, *NumBytes contains the
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total size of the buffer. At exit, *NumBytes contains the
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total number of bytes actually read.
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Buffer - Pinter to a caller-allocated buffer that contains the destine
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for the read.
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Returns:
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EFI_SUCCESS - The firmware volume was read successfully.
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EFI_BAD_BUFFER_SIZE - The read was attempted across an LBA boundary.
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EFI_ACCESS_DENIED - Access denied.
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EFI_DEVICE_ERROR - The block device is malfunctioning and could not be read.
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--*/
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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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Routine Description:
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Writes the specified number of bytes from the input buffer to the block.
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Arguments:
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This - Indicates the calling context.
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Lba - The starting logical block index to write to.
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Offset - Offset into the block at which to begin writing.
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NumBytes - Pointer to a UINT32. At entry, *NumBytes contains the
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total size of the buffer. At exit, *NumBytes contains the
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total number of bytes actually written.
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Buffer - Pinter to a caller-allocated buffer that contains the source
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for the write.
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Returns:
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EFI_SUCCESS - The firmware volume was written successfully.
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EFI_BAD_BUFFER_SIZE - The write was attempted across an LBA boundary. On output,
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NumBytes contains the total number of bytes actually written.
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EFI_ACCESS_DENIED - The firmware volume is in the WriteDisabled state.
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EFI_DEVICE_ERROR - The block device is malfunctioning and could not be written.
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EFI_UNSUPPORTED - Not supported.
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--*/
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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 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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Routine Description:
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Get Fvb's base address.
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Arguments:
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This - Indicates the calling context.
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Address - Fvb device base address.
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Returns:
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EFI_SUCCESS - Successfully got Fvb's base address.
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EFI_UNSUPPORTED - Not supported.
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--*/
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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 EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
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IN EFI_LBA Lba,
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OUT UINTN *BlockSize,
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OUT UINTN *NumberOfBlocks
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)
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/*++
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Routine Description:
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Retrieves the size in bytes of a specific block within a firmware volume.
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Arguments:
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This - Indicates the calling context.
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Lba - Indicates the block for which to return the size.
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BlockSize - Pointer to a caller-allocated UINTN in which the size of the
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block is returned.
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NumberOfBlocks - Pointer to a caller-allocated UINTN in which the number of
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consecutive blocks starting with Lba is returned. All blocks
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in this range have a size of BlockSize.
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Returns:
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EFI_SUCCESS - The firmware volume base address is returned.
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EFI_INVALID_PARAMETER - The requested LBA is out of range.
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--*/
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;
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EFI_STATUS
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FwVolBlockDriverInit (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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This routine is the driver initialization entry point. It initializes the
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libraries, consumes FV hobs and NT_NON_MM_FV environment variable and
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produces instances of FW_VOL_BLOCK_PROTOCOL as appropriate.
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Arguments:
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ImageHandle - The image handle.
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SystemTable - The system table.
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Returns:
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Status code
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--*/
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;
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EFI_STATUS
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ProduceFVBProtocolOnBuffer (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN EFI_HANDLE ParentHandle,
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OUT EFI_HANDLE *FvProtocolHandle OPTIONAL
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)
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/*++
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Routine Description:
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This routine produces a firmware volume block protocol on a given
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buffer.
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Arguments:
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BaseAddress - base address of the firmware volume image
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Length - length of the firmware volume image
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ParentHandle - handle of parent firmware volume, if this
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image came from an FV image file in another
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firmware volume (ala capsules)
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FvProtocolHandle - Firmware volume block protocol produced.
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Returns:
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EFI_VOLUME_CORRUPTED - Volume corrupted.
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EFI_OUT_OF_RESOURCES - No enough buffer to be allocated.
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EFI_SUCCESS - Successfully produced a FVB protocol on given buffer.
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--*/
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;
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#endif
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