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OvmfPkg/EmuVariableFvbRuntimeDxe: Disable if flash variables are supported 

If QEMU flash is supported, then the PcdFlashNvStorageVariableBase64
will be set by the flash FVB driver. If it is set to a non-zero value,
then we disable memory based variables.

In future patches we will add the flash FVB driver and
force it to run before this driver. Therefore, if QEMU flash
writing is supported, then this driver will be disabled.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14838 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jordan Justen 2013-11-12 18:34:43 +00:00 committed by jljusten
parent 2662fa8dcd
commit 4313b26de0
1 changed files with 6 additions and 0 deletions
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6
OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.c
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@ -819,6 +819,12 @@ FvbInitialize (
return EFI_INVALID_PARAMETER;
}
if (PcdGet64 (PcdFlashNvStorageVariableBase64) != 0) {
DEBUG ((EFI_D_INFO, "Disabling EMU Variable FVB since "
"flash variables appear to be supported.\n"));
return EFI_ABORTED;
}
//
// By default we will initialize the FV contents. But, if
// PcdEmuVariableNvStoreReserved is non-zero, then we will