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OvmfPkg/BdsPlatform: don't restore NvVars from disk when flash is present

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QemuFlashFvbServicesRuntimeDxe provides actual persistent storage for
non-volatile variables. When it is active, any on-disk NvVars file counts
as a stale source of variables -- hence don't load these files in BDS.

This also allows Secure Boot settings (eg. enrolled keys) to survive cold
VM reboots.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14844 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Laszlo Ersek
2013-11-12 18:35:32 +00:00
committed by jljusten
parent 9d35ac2611
commit 2590861a5b
2 changed files with 11 additions and 5 deletions
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1
OvmfPkg/Library/PlatformBdsLib/PlatformBdsLib.inf
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@@ -57,6 +57,7 @@
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPlatformBootTimeOut
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdLogoFile
gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashVariablesEnable
[Pcd.IA32, Pcd.X64]
gEfiMdePkgTokenSpaceGuid.PcdFSBClock