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SecurityPkg/TPM2: Extract GetSupportedAndActivePcrs to Tpm2CommandLib

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This patch extracts function Tpm2GetCapabilitySupportedAndActivePcrs()
from drivers and also update Tcg2ExecutePhysicalPresence() to call
Tpm2GetCapabilitySupportedAndActivePcrs() instead of
Tcg2Protocol->GetCapability to query the TPM to determine which
hashing algorithms are supported.

Cc: Chao B Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Chao Zhang <chao.b.zhang@intel.com>
This commit is contained in:
Jiewen Yao
2016-09-14 16:28:12 +08:00
committed by Star Zeng
parent f5e34e37e0
commit 07cdba18cd
4 changed files with 118 additions and 58 deletions
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18
SecurityPkg/Include/Library/Tpm2CommandLib.h
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@@ -762,6 +762,24 @@ Tpm2GetCapabilityPcrs (
OUT TPML_PCR_SELECTION *Pcrs
);
/**
This function will query the TPM to determine which hashing algorithms
are supported and which PCR banks are currently active.
@param[out] TpmHashAlgorithmBitmap A bitmask containing the algorithms supported by the TPM.
@param[out] ActivePcrBanks A bitmask containing the PCRs currently allocated.
@retval EFI_SUCCESS TPM was successfully queried and return values can be trusted.
@retval Others An error occurred, likely in communication with the TPM.
**/
EFI_STATUS
EFIAPI
Tpm2GetCapabilitySupportedAndActivePcrs(
OUT UINT32 *TpmHashAlgorithmBitmap,
OUT UINT32 *ActivePcrBanks
);
/**
This command returns the information of TPM AlgorithmSet.