9607962def
Note: * This only works before ExitBootServices * For OVMF, variables are only preserved on the disk if there is a hard disk connected which has a writeable FAT file system. The Ovmf/Library/EmuVariableFvbLib library will look for the gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent PCD to be set to a non-zero value. If set, it is treated as an event handle, and each write to the EmuVariableFvb will cause the event to be signaled. In this change, the OVMF platform BDS library sets up this event, and sets the PCD so that after each write to the EMU Variable FVB, the non-volatile variables will be saved out to the file system. The end result is that NV variables that are written prior to the ExitBootServices call should be preserved by storing them on the disk. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9318 6f19259b-4bc3-4df7-8a09-765794883524
64 lines
1.8 KiB
INI
64 lines
1.8 KiB
INI
#/** @file
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# Platform BDS customizations library.
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#
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# Copyright (c) 2007 - 2008, Intel Corporation. <BR>
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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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#
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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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#**/
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = PlatformBdsLib
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FILE_GUID = 143B5044-7C1B-4904-9778-EA16F1F3D554
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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LIBRARY_CLASS = PlatformBdsLib|DXE_DRIVER
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EDK_RELEASE_VERSION = 0x00020000
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EFI_SPECIFICATION_VERSION = 0x0002000A
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#
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# The following information is for reference only and not required by the build tools.
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#
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# VALID_ARCHITECTURES = IA32 X64 IPF EBC
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#
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[Sources.common]
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BdsPlatform.c
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PlatformData.c
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BdsPlatform.h
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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BaseLib
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MemoryAllocationLib
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UefiBootServicesTableLib
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BaseMemoryLib
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DebugLib
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PcdLib
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GenericBdsLib
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PciLib
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NvVarsFileLib
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[Pcd]
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gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPlatformBootTimeOut
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gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdLogoFile
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gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent
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[Pcd.IA32, Pcd.X64]
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gEfiMdePkgTokenSpaceGuid.PcdFSBClock
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[Protocols]
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gEfiDecompressProtocolGuid
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