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OvmfPkg: add Tcg2PhysicalPresenceLibQemu

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Cloned "SecurityPkg/Library/DxeTcg2PhysicalPresenceLib" and:

- removed all the functions that are unreachable from
  Tcg2PhysicalPresenceLibProcessRequest() [called from platform BDS],
  or SubmitRequestToPreOSFunction() and
  ReturnOperationResponseToOsFunction() [called from Tcg2Dxe].

- replaced everything that's related to the
  TCG2_PHYSICAL_PRESENCE*_VARIABLE variables, with direct access to
  the QEMU structures.

This commit is based on initial experimental work from Stefan Berger.
In particular, he wrote most of QEMU PPI support, and designed the
qemu/firmware interaction. Initially, Stefan tried to reuse the
existing SecurityPkg code, but we eventually decided to get rid of the
variables and simplify the ovmf/qemu version.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[lersek@redhat.com: clean up non-idiomatic coding style]
[lersek@redhat.com: null mPpi on invalid PPI address]
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Marc-André Lureau
2018-05-18 14:23:03 +02:00
committed by Laszlo Ersek
parent 909ac65af1
commit b9777bb42e
6 changed files with 1046 additions and 3 deletions
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2
OvmfPkg/OvmfPkgX64.dsc
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@@ -211,7 +211,7 @@
!if $(TPM2_ENABLE) == TRUE
Tpm2CommandLib|SecurityPkg/Library/Tpm2CommandLib/Tpm2CommandLib.inf
Tcg2PhysicalPresenceLib|SecurityPkg/Library/DxeTcg2PhysicalPresenceLib/DxeTcg2PhysicalPresenceLib.inf
Tcg2PhysicalPresenceLib|OvmfPkg/Library/Tcg2PhysicalPresenceLibQemu/DxeTcg2PhysicalPresenceLib.inf
Tcg2PpVendorLib|SecurityPkg/Library/Tcg2PpVendorLibNull/Tcg2PpVendorLibNull.inf
!else
Tcg2PhysicalPresenceLib|OvmfPkg/Library/Tcg2PhysicalPresenceLibNull/DxeTcg2PhysicalPresenceLib.inf