eb1cace292
Previous DxeCore FwVol code will cache whole FvMain FV from flash that may be uncached if platform reports FvMain FVB, it will impact DXE performance. The code already has file level cache, so don’t need to cache memory mapped IO FV. It can also reduce memory consumption of caching memory mapped IO FVs. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15916 6f19259b-4bc3-4df7-8a09-765794883524
430 lines
16 KiB
C
430 lines
16 KiB
C
/** @file
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Firmware File System protocol. Layers on top of Firmware
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Block protocol to produce a file abstraction of FV based files.
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Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
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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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**/
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#ifndef __FW_VOL_DRIVER_H_
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#define __FW_VOL_DRIVER_H_
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#define FV2_DEVICE_SIGNATURE SIGNATURE_32 ('_', 'F', 'V', '2')
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//
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// Used to track all non-deleted files
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//
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typedef struct {
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LIST_ENTRY Link;
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EFI_FFS_FILE_HEADER *FfsHeader;
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UINTN StreamHandle;
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BOOLEAN FileCached;
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} FFS_FILE_LIST_ENTRY;
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typedef struct {
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UINTN Signature;
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EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
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EFI_HANDLE Handle;
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EFI_FIRMWARE_VOLUME2_PROTOCOL Fv;
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EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
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UINT8 *CachedFv;
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UINT8 *EndOfCachedFv;
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FFS_FILE_LIST_ENTRY *LastKey;
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LIST_ENTRY FfsFileListHeader;
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UINT32 AuthenticationStatus;
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UINT8 ErasePolarity;
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BOOLEAN IsFfs3Fv;
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BOOLEAN IsMemoryMapped;
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} FV_DEVICE;
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#define FV_DEVICE_FROM_THIS(a) CR(a, FV_DEVICE, Fv, FV2_DEVICE_SIGNATURE)
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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 Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param Attributes output buffer which contains attributes.
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@retval EFI_SUCCESS Successfully got volume attributes.
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**/
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EFI_STATUS
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EFIAPI
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FvGetVolumeAttributes (
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IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
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OUT EFI_FV_ATTRIBUTES *Attributes
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);
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/**
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Sets current attributes for volume
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@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param Attributes At input, contains attributes to be set. At output
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contains new value of FV.
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@retval EFI_UNSUPPORTED Could not be set.
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**/
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EFI_STATUS
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EFIAPI
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FvSetVolumeAttributes (
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IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
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IN OUT EFI_FV_ATTRIBUTES *Attributes
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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 Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param Key Key is a pointer to a caller allocated
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buffer that contains implementation specific
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data that is used to track where to begin
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the search for the next file. The size of
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the buffer must be at least This->KeySize
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bytes long. To reinitialize the search and
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begin from the beginning of the firmware
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volume, the entire buffer must be cleared to
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zero. Other than clearing the buffer to
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initiate a new search, the caller must not
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modify the data in the buffer between calls
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to GetNextFile().
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@param FileType FileType is a pointer to a caller allocated
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EFI_FV_FILETYPE. The GetNextFile() API can
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filter it's search for files based on the
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value of *FileType input. A *FileType input
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of 0 causes GetNextFile() to search for
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files of all types. If a file is found, the
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file's type is returned in *FileType.
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*FileType is not modified if no file is
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found.
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@param NameGuid NameGuid is a pointer to a caller allocated
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EFI_GUID. If a file is found, the file's
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name is returned in *NameGuid. *NameGuid is
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not modified if no file is found.
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@param Attributes Attributes is a pointer to a caller
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allocated EFI_FV_FILE_ATTRIBUTES. If a file
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is found, the file's attributes are returned
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in *Attributes. *Attributes is not modified
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if no file is found.
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@param Size Size is a pointer to a caller allocated
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UINTN. If a file is found, the file's size
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is returned in *Size. *Size is not modified
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if no file is found.
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@retval EFI_SUCCESS Successfully find the file.
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@retval EFI_DEVICE_ERROR Device error.
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@retval EFI_ACCESS_DENIED Fv could not read.
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@retval EFI_NOT_FOUND No matching file found.
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@retval EFI_INVALID_PARAMETER Invalid parameter
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**/
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EFI_STATUS
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EFIAPI
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FvGetNextFile (
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IN CONST EFI_FIRMWARE_VOLUME2_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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Locates a file in the firmware volume and
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copies it to the supplied buffer.
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@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param NameGuid Pointer to an EFI_GUID, which is the
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filename.
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@param Buffer Buffer is a pointer to pointer to a buffer
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in which the file or section contents or are
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returned.
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@param BufferSize BufferSize is a pointer to caller allocated
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UINTN. On input *BufferSize indicates the
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size in bytes of the memory region pointed
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to by Buffer. On output, *BufferSize
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contains the number of bytes required to
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read the file.
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@param FoundType FoundType is a pointer to a caller allocated
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EFI_FV_FILETYPE that on successful return
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from Read() contains the type of file read.
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This output reflects the file type
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irrespective of the value of the SectionType
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input.
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@param FileAttributes FileAttributes is a pointer to a caller
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allocated EFI_FV_FILE_ATTRIBUTES. On
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successful return from Read(),
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*FileAttributes contains the attributes of
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the file read.
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@param AuthenticationStatus AuthenticationStatus is a pointer to a
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caller allocated UINTN in which the
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authentication status is returned.
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@retval EFI_SUCCESS Successfully read to memory buffer.
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@retval EFI_WARN_BUFFER_TOO_SMALL Buffer too small.
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@retval EFI_NOT_FOUND Not found.
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@retval EFI_DEVICE_ERROR Device error.
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@retval EFI_ACCESS_DENIED Could not read.
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@retval EFI_INVALID_PARAMETER Invalid parameter.
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@retval EFI_OUT_OF_RESOURCES Not enough buffer to be allocated.
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**/
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EFI_STATUS
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EFIAPI
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FvReadFile (
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IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
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IN CONST 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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Locates a section in a given FFS File and
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copies it to the supplied buffer (not including section header).
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@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param NameGuid Pointer to an EFI_GUID, which is the
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filename.
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@param SectionType Indicates the section type to return.
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@param SectionInstance Indicates which instance of sections with a
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type of SectionType to return.
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@param Buffer Buffer is a pointer to pointer to a buffer
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in which the file or section contents or are
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returned.
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@param BufferSize BufferSize is a pointer to caller allocated
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UINTN.
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@param AuthenticationStatus AuthenticationStatus is a pointer to a
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caller allocated UINT32 in which the
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authentication status is returned.
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@retval EFI_SUCCESS Successfully read the file section into
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buffer.
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@retval EFI_WARN_BUFFER_TOO_SMALL Buffer too small.
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@retval EFI_NOT_FOUND Section not found.
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@retval EFI_DEVICE_ERROR Device error.
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@retval EFI_ACCESS_DENIED Could not read.
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@retval EFI_INVALID_PARAMETER Invalid parameter.
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**/
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EFI_STATUS
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EFIAPI
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FvReadFileSection (
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IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
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IN CONST 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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/**
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Writes one or more files to the firmware volume.
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@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param NumberOfFiles Number of files.
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@param WritePolicy WritePolicy indicates the level of reliability
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for the write in the event of a power failure or
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other system failure during the write operation.
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@param FileData FileData is an pointer to an array of
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EFI_FV_WRITE_DATA. Each element of array
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FileData represents a file to be written.
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@retval EFI_SUCCESS Files successfully written to firmware volume
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@retval EFI_OUT_OF_RESOURCES Not enough buffer to be allocated.
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@retval EFI_DEVICE_ERROR Device error.
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@retval EFI_WRITE_PROTECTED Write protected.
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@retval EFI_NOT_FOUND Not found.
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@retval EFI_INVALID_PARAMETER Invalid parameter.
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@retval EFI_UNSUPPORTED This function not supported.
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**/
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EFI_STATUS
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EFIAPI
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FvWriteFile (
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IN CONST EFI_FIRMWARE_VOLUME2_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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Return information of type InformationType for the requested firmware
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volume.
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@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param InformationType InformationType for requested.
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@param BufferSize On input, size of Buffer.On output, the amount of data
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returned in Buffer.
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@param Buffer A poniter to the data buffer to return.
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@retval EFI_SUCCESS Successfully got volume Information.
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**/
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EFI_STATUS
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EFIAPI
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FvGetVolumeInfo (
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IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
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IN CONST EFI_GUID *InformationType,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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);
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/**
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Set information of type InformationType for the requested firmware
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volume.
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@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
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@param InformationType InformationType for requested.
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@param BufferSize On input, size of Buffer.On output, the amount of data
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returned in Buffer.
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@param Buffer A poniter to the data buffer to return.
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@retval EFI_SUCCESS Successfully set volume Information.
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**/
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EFI_STATUS
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EFIAPI
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FvSetVolumeInfo (
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IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
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IN CONST EFI_GUID *InformationType,
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IN UINTN BufferSize,
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IN CONST VOID *Buffer
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);
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/**
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Check if a block of buffer is erased.
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@param ErasePolarity Erase polarity attribute of the firmware volume
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@param InBuffer The buffer to be checked
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@param BufferSize Size of the buffer in bytes
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@retval TRUE The block of buffer is erased
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@retval FALSE The block of buffer is not erased
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**/
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BOOLEAN
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IsBufferErased (
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IN UINT8 ErasePolarity,
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IN VOID *InBuffer,
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IN UINTN BufferSize
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);
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/**
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Get the FFS file state by checking the highest bit set in the header's state field.
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@param ErasePolarity Erase polarity attribute of the firmware volume
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@param FfsHeader Points to the FFS file header
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@return FFS File state
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**/
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EFI_FFS_FILE_STATE
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GetFileState (
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IN UINT8 ErasePolarity,
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IN EFI_FFS_FILE_HEADER *FfsHeader
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);
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/**
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Set the FFS file state.
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@param State The state to be set.
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@param FfsHeader Points to the FFS file header
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@return None.
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**/
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VOID
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SetFileState (
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IN UINT8 State,
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IN EFI_FFS_FILE_HEADER *FfsHeader
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);
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/**
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Check if it's a valid FFS file header.
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@param ErasePolarity Erase polarity attribute of the firmware volume
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@param FfsHeader Points to the FFS file header to be checked
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@param FileState FFS file state to be returned
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@retval TRUE Valid FFS file header
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@retval FALSE Invalid FFS file header
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**/
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BOOLEAN
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IsValidFfsHeader (
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IN UINT8 ErasePolarity,
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IN EFI_FFS_FILE_HEADER *FfsHeader,
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OUT EFI_FFS_FILE_STATE *FileState
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);
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/**
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Check if it's a valid FFS file.
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Here we are sure that it has a valid FFS file header since we must call IsValidFfsHeader() first.
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@param ErasePolarity Erase polarity attribute of the firmware volume
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@param FfsHeader Points to the FFS file to be checked
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@retval TRUE Valid FFS file
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@retval FALSE Invalid FFS file
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**/
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BOOLEAN
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IsValidFfsFile (
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IN UINT8 ErasePolarity,
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IN EFI_FFS_FILE_HEADER *FfsHeader
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);
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/**
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given the supplied FW_VOL_BLOCK_PROTOCOL, allocate a buffer for output and
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copy the volume header into it.
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@param Fvb The FW_VOL_BLOCK_PROTOCOL instance from which to
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read the volume header
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@param FwVolHeader Pointer to pointer to allocated buffer in which
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the volume header is returned.
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@retval EFI_OUT_OF_RESOURCES No enough buffer could be allocated.
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@retval EFI_SUCCESS Successfully read volume header to the allocated
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buffer.
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**/
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EFI_STATUS
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GetFwVolHeader (
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IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,
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OUT EFI_FIRMWARE_VOLUME_HEADER **FwVolHeader
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);
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#endif
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