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Add performance optimization for Tcg/TrEE.

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Add error check for Tcg/TrEE Pei/Dxe driver to avoid unnecessary hardware check for performance optimization.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com>
Reviewed-by: "Zeng, Star" <star.zeng@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17004 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Yao, Jiewen
2015-03-04 01:15:08 +00:00
committed by jyao1
parent 4c9ed23eb6
commit 3dd05ac3e6
5 changed files with 38 additions and 9 deletions
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11
SecurityPkg/Tcg/TrEEDxe/TrEEDxe.c
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@@ -1815,16 +1815,17 @@ DriverEntry (
return EFI_UNSUPPORTED;
}
if (GetFirstGuidHob (&gTpmErrorHobGuid) != NULL) {
DEBUG ((EFI_D_ERROR, "TPM2 error!\n"));
return EFI_DEVICE_ERROR;
}
Status = Tpm2RequestUseTpm ();
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "TPM not detected!\n"));
DEBUG ((EFI_D_ERROR, "TPM2 not detected!\n"));
return Status;
}
if (GetFirstGuidHob (&gTpmErrorHobGuid) != NULL) {
mTcgDxeData.BsCap.TrEEPresentFlag = FALSE;
}
//
// Fill information
//