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OvmfPkg: indicate enablement of flash variables with a dedicated PCD 

PcdFlashNvStorageVariableBase64 is used to arbitrate between
QemuFlashFvbServicesRuntimeDxe and EmuVariableFvbRuntimeDxe, but even the
latter driver sets it if we fall back to it.

Allow code running later than the startup of these drivers to know about
the availability of flash variables, through a dedicated PCD.

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@14843 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Laszlo Ersek 2013-11-12 18:35:23 +00:00 committed by jljusten
parent d48ec970ad
commit 9d35ac2611
3 changed files with 3 additions and 0 deletions
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1
OvmfPkg/OvmfPkg.dec
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@ -80,6 +80,7 @@
[PcdsDynamic, PcdsDynamicEx]
gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent|0|UINT64|2
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashVariablesEnable|FALSE|BOOLEAN|0x10
[PcdsFeatureFlag]
gUefiOvmfPkgTokenSpaceGuid.PcdSecureBootEnable|FALSE|BOOLEAN|3

1
OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf
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@ -77,6 +77,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashNvStorageEventLogBase
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashVariablesEnable
[Depex]

1
OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockService.c
View File

@ -1222,5 +1222,6 @@ Returns:
);
ASSERT_EFI_ERROR (Status);
PcdSetBool (PcdOvmfFlashVariablesEnable, TRUE);
return EFI_SUCCESS;
}