MdeModulePkg: Variable drivers robustly handle crashes during Reclaim().

PEI variable implementation checks only the variable header signature for validity. This does not seem robust if system crash occurred during previous Reclaim() operation. If the crash occurred while FTW was rewriting the variable FV, the signature could be valid even though the rest of the FV isn't valid.
Solution: Add a FaultTolerantWritePei driver to check and provide the FTW last write status, then PEI variable and early phase(before FTW protocol ready) of DXE variable can check the status and determine if all or partial variable data has been backed up in spare block, and then use the backed up data.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14454 6f19259b-4bc3-4df7-8a09-765794883524
SecurityPkg: Variable drivers robustly handle crashes during Reclaim().

PEI variable implementation checks only the variable header signature for validity. This does not seem robust if system crash occurred during previous Reclaim() operation. If the crash occurred while FTW was rewriting the variable FV, the signature could be valid even though the rest of the FV isn't valid.
Solution: PEI variable and early phase(before FTW protocol ready) of DXE variable can check the FTW last write status provided by FaultTolerantWritePei and determine if all or partial variable data has been backed up in spare block, and then use the backed up data.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14455 6f19259b-4bc3-4df7-8a09-765794883524
Nt32Pkg: Use FaultTolerantWritePei driver.

1. The signature of working block header needs to be updated to gEdkiiWorkingBlockSignatureGuid because FTW write header and record has be updated and exposed to support crossing archs.
2. PEI variable has been updated to depend on FaultTolerantWritePei to robustly handle crashes during Reclaim(), so add FaultTolerantWritePei.inf in *.dsc and *.fdf.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14456 6f19259b-4bc3-4df7-8a09-765794883524
EmulatorPkg: Use FaultTolerantWritePei driver.

1. The signature of working block header needs to be updated to gEdkiiWorkingBlockSignatureGuid because FTW write header and record has be updated and exposed to support crossing archs.
2. PEI variable has been updated to depend on FaultTolerantWritePei to robustly handle crashes during Reclaim(), so add FaultTolerantWritePei.inf in *.dsc and *.fdf.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14457 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg EmuVariableFvbRuntimeDxe: Let FaultTolerantWriteDxe to init working block header.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14458 6f19259b-4bc3-4df7-8a09-765794883524