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LargeVariableWriteLib is used to store large data sets using the UEFI Variable Services. At time of writting, most UEFI Variable Services implementations to not allow more than 64KB of data to be stored in a single UEFI variable. This library will split data sets across multiple variables as needed. It adds the SetLargeVariable() API to provide this service. The primary use for this library is to create binary compatible drivers and OpROMs which need to work both with TianoCore and other UEFI PI implementations. When customizing and recompiling the platform firmware image is possible, adjusting the value of PcdMaxVariableSize may provide a simpler solution to this problem. Cc: Chasel Chiu <chasel.chiu@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Eric Dong <eric.dong@intel.com> Cc: Michael Kubacki <michael.kubacki@microsoft.com> Cc: Isaac Oram <isaac.w.oram@intel.com> Signed-off-by: Nate DeSimone <nathaniel.l.desimone@intel.com> Reviewed-by: Chasel Chiu <chasel.chiu@intel.com> Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Isaac Oram <isaac.w.oram@intel.com>
52 lines
1.7 KiB
INI
52 lines
1.7 KiB
INI
## @file
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# Component description file for Large Variable Write Library
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#
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# This library is used to store large data sets using the UEFI Variable Services.
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# At time of writting, most UEFI Variable Services implementations do not allow
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# more than 64KB of data to be stored in a single UEFI variable. This library
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# will split data sets across multiple variables as needed.
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#
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# In the case where more than one variable is needed to store the data, an
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# integer number will be added to the end of the variable name. This number
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# will be incremented for each variable as needed to store the entire data set.
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#
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# The primary use for this library is to create binary compatible drivers
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# and OpROMs which need to work both with TianoCore and other UEFI PI
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# implementations. When customizing and recompiling the platform firmware image
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# is possible, adjusting the value of PcdMaxVariableSize may provide a simpler
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# solution to this problem.
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#
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# Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
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#
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = BaseLargeVariableWriteLib
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FILE_GUID = 13E7DD75-FBE0-4B92-87A9-6BED253EB99E
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MODULE_TYPE = BASE
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VERSION_STRING = 1.0
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LIBRARY_CLASS = LargeVariableWriteLib
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#
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# VALID_ARCHITECTURES = IA32 X64 EBC
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#
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[Sources]
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LargeVariableWriteLib.c
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LargeVariableCommon.h
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[Packages]
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MdePkg/MdePkg.dec
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MinPlatformPkg/MinPlatformPkg.dec
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[LibraryClasses]
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BaseLib
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BaseMemoryLib
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DebugLib
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PrintLib
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VariableReadLib
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VariableWriteLib
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