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SecurityPkg: Tpm2DeviceLib: Enable CapCRBIdleBypass support

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Directly transition from CMD completion to CMD Ready state if device
supports IdleByPass

Cc: Long Qin <qin.long@intel.com>
Cc: Yao Jiewen <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Long Qin <qin.long@intel.com>
This commit is contained in:
Zhang, Chao B
2018-03-23 14:04:01 +08:00
parent 714eedc5b9
commit 631976706d
7 changed files with 146 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c
View File

@@ -34,6 +34,18 @@ Tpm2GetPtpInterface (
IN VOID *Register
);
/**
Return PTP CRB interface IdleByPass state.
@param[in] Register Pointer to PTP register.
@return PTP CRB interface IdleByPass state.
**/
UINT8
Tpm2GetIdleByPass (
IN VOID *Register
);
/**
Dump PTP register information.
@@ -97,6 +109,7 @@ Tpm2InstanceLibDTpmConstructor (
{
EFI_STATUS Status;
TPM2_PTP_INTERFACE_TYPE PtpInterface;
UINT8 IdleByPass;
Status = Tpm2RegisterTpm2DeviceLib (&mDTpm2InternalTpm2Device);
if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) {
@@ -111,6 +124,12 @@ Tpm2InstanceLibDTpmConstructor (
PtpInterface = Tpm2GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
PcdSet8S(PcdActiveTpmInterfaceType, PtpInterface);
}
if (PcdGet8(PcdActiveTpmInterfaceType) == PtpInterfaceCrb && PcdGet8(PcdCRBIdleByPass) == 0xFF) {
IdleByPass = Tpm2GetIdleByPass((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
PcdSet8S(PcdCRBIdleByPass, IdleByPass);
}
DumpPtpInfo ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
}
return EFI_SUCCESS;