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SecurityPkg: Change default value source

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https://bugzilla.tianocore.org/show_bug.cgi?id=2713
In current code, If TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE variable
is not exist, code will get default value from two places.
This fix is to make the default value comes from the PCD
gEfiSecurityPkgTokenSpaceGuid.PcdTcg2PhysicalPresenceFlags

Signed-off-by: Maggie Chu <maggie.chu@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Maggie Chu
2020-05-18 19:41:50 +08:00
committed by mergify[bot]
parent 8f39da712f
commit 1a2ad3ba9e
7 changed files with 30 additions and 27 deletions
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7
SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
View File

@@ -10,7 +10,7 @@
Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction() and Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction()
will receive untrusted input and do validation.
Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -31,6 +31,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
EFI_SMM_VARIABLE_PROTOCOL *mTcg2PpSmmVariable;
BOOLEAN mIsTcg2PPVerLowerThan_1_3 = FALSE;
UINT32 mTcg2PhysicalPresenceFlags;
/**
The handler for TPM physical presence function:
@@ -162,7 +163,7 @@ Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx (
&Flags
);
if (EFI_ERROR (Status)) {
Flags.PPFlags = TCG2_BIOS_TPM_MANAGEMENT_FLAG_DEFAULT | TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_DEFAULT;
Flags.PPFlags = mTcg2PhysicalPresenceFlags;
}
ReturnCode = Tcg2PpVendorLibSubmitRequestToPreOSFunction (*OperationRequest, Flags.PPFlags, *RequestParameter);
}
@@ -396,5 +397,7 @@ Tcg2PhysicalPresenceLibConstructor (
Status = gSmst->SmmLocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID**)&mTcg2PpSmmVariable);
ASSERT_EFI_ERROR (Status);
mTcg2PhysicalPresenceFlags = PcdGet32(PcdTcg2PhysicalPresenceFlags);
return EFI_SUCCESS;
}