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SecurityPkg: Tcg2Dxe: Log EV_NO_ACTION event in TCG_PCR_EVENT2 format 

All the event log entry in TCG2 Event log format should be TCG_PCR_EVENT2
except event log header. Defined by TCG EFI Spec 2.0 00.13
https://trustedcomputinggroup.org/wp-content/uploads/EFI-Protocol-Specification-rev13-160330final.pdf

Cc: Long Qin <qin.long@intel.com>
Cc: Yao Jiewen <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
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 2017-02-04 09:17:19 +08:00
parent f1d91f33a1
commit a2612cf7d8
1 changed files with 96 additions and 18 deletions
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114
SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c
View File

@ -167,6 +167,82 @@ InternalDumpData (
}
}
/**
This function initialize TCG_PCR_EVENT2_HDR for EV_NO_ACTION Event Type other than EFI Specification ID event
The behavior is defined by TCG PC Client PFP Spec. Section 9.3.4 EV_NO_ACTION Event Types
@param[in, out] NoActionEvent Event Header of EV_NO_ACTION Event
@param[in] EventSize Event Size of the EV_NO_ACTION Event
**/
VOID
InitNoActionEvent (
IN OUT TCG_PCR_EVENT2_HDR *NoActionEvent,
IN UINT32 EventSize
)
{
UINT32 DigestListCount;
TPMI_ALG_HASH HashAlgId;
UINT8 *DigestBuffer;
DigestBuffer = (UINT8 *)NoActionEvent->Digests.digests;
DigestListCount = 0;
NoActionEvent->PCRIndex = 0;
NoActionEvent->EventType = EV_NO_ACTION;
//
// Set Hash count & hashAlg accordingly, while Digest.digests[n].digest to all 0
//
ZeroMem (&NoActionEvent->Digests, sizeof(NoActionEvent->Digests));
if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA1) != 0) {
HashAlgId = TPM_ALG_SHA1;
CopyMem (DigestBuffer, &HashAlgId, sizeof(TPMI_ALG_HASH));
DigestBuffer += sizeof(TPMI_ALG_HASH) + GetHashSizeFromAlgo (HashAlgId);
DigestListCount++;
}
if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA256) != 0) {
HashAlgId = TPM_ALG_SHA256;
CopyMem (DigestBuffer, &HashAlgId, sizeof(TPMI_ALG_HASH));
DigestBuffer += sizeof(TPMI_ALG_HASH) + GetHashSizeFromAlgo (HashAlgId);
DigestListCount++;
}
if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA384) != 0) {
HashAlgId = TPM_ALG_SHA384;
CopyMem (DigestBuffer, &HashAlgId, sizeof(TPMI_ALG_HASH));
DigestBuffer += sizeof(TPMI_ALG_HASH) + GetHashSizeFromAlgo (HashAlgId);
DigestListCount++;
}
if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA512) != 0) {
HashAlgId = TPM_ALG_SHA512;
CopyMem (DigestBuffer, &HashAlgId, sizeof(TPMI_ALG_HASH));
DigestBuffer += sizeof(TPMI_ALG_HASH) + GetHashSizeFromAlgo (HashAlgId);
DigestListCount++;
}
if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SM3_256) != 0) {
HashAlgId = TPM_ALG_SM3_256;
CopyMem (DigestBuffer, &HashAlgId, sizeof(TPMI_ALG_HASH));
DigestBuffer += sizeof(TPMI_ALG_HASH) + GetHashSizeFromAlgo (HashAlgId);
DigestListCount++;
}
//
// Set Digests Count
//
WriteUnaligned32 ((UINT32 *)&NoActionEvent->Digests.count, DigestListCount);
//
// Set Event Size
//
WriteUnaligned32((UINT32 *)DigestBuffer, EventSize);
}
/**
This function dump raw data with colume format.
@ -1381,7 +1457,8 @@ SetupEventLog (
UINT32 HashAlgorithmMaskCopied;
TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct;
UINT8 TempBuf[sizeof(TCG_EfiSpecIDEventStruct) + sizeof(UINT32) + (HASH_COUNT * sizeof(TCG_EfiSpecIdEventAlgorithmSize)) + sizeof(UINT8)];
TCG_PCR_EVENT_HDR NoActionEvent;
TCG_PCR_EVENT_HDR SpecIdEvent;
TCG_PCR_EVENT2_HDR NoActionEvent;
TCG_EfiSpecIdEventAlgorithmSize *DigestSize;
TCG_EfiSpecIdEventAlgorithmSize *TempDigestSize;
UINT8 *VendorInfoSize;
@ -1469,25 +1546,26 @@ SetupEventLog (
VendorInfoSize = (UINT8 *)TempDigestSize;
*VendorInfoSize = 0;
NoActionEvent.PCRIndex = 0;
NoActionEvent.EventType = EV_NO_ACTION;
ZeroMem (&NoActionEvent.Digest, sizeof(NoActionEvent.Digest));
NoActionEvent.EventSize = (UINT32)GetTcgEfiSpecIdEventStructSize (TcgEfiSpecIdEventStruct);
SpecIdEvent.PCRIndex = 0;
SpecIdEvent.EventType = EV_NO_ACTION;
ZeroMem (&SpecIdEvent.Digest, sizeof(SpecIdEvent.Digest));
SpecIdEvent.EventSize = (UINT32)GetTcgEfiSpecIdEventStructSize (TcgEfiSpecIdEventStruct);
//
// Log TcgEfiSpecIdEventStruct as the first Event
// Log TcgEfiSpecIdEventStruct as the first Event. Event format is TCG_PCR_EVENT.
// TCG EFI Protocol Spec. Section 5.3 Event Log Header
// TCG PC Client PFP spec. Section 9.2 Measurement Event Entries and Log
//
Status = TcgDxeLogEvent (
mTcg2EventInfo[Index].LogFormat,
&NoActionEvent,
sizeof(NoActionEvent),
&SpecIdEvent,
sizeof(SpecIdEvent),
(UINT8 *)TcgEfiSpecIdEventStruct,
NoActionEvent.EventSize
SpecIdEvent.EventSize
);
//
// EfiStartupLocalityEvent
// EfiStartupLocalityEvent. Event format is TCG_PCR_EVENT2
//
GuidHob.Guid = GetFirstGuidHob (&gTpm2StartupLocalityHobGuid);
if (GuidHob.Guid != NULL) {
@ -1496,14 +1574,13 @@ SetupEventLog (
//
StartupLocalityEvent.StartupLocality = *(UINT8 *)(GET_GUID_HOB_DATA (GuidHob.Guid));
CopyMem (StartupLocalityEvent.Signature, TCG_EfiStartupLocalityEvent_SIGNATURE, sizeof(StartupLocalityEvent.Signature));
NoActionEvent.PCRIndex = 0;
NoActionEvent.EventType = EV_NO_ACTION;
ZeroMem (&NoActionEvent.Digest, sizeof(NoActionEvent.Digest));
NoActionEvent.EventSize = sizeof(StartupLocalityEvent);
DEBUG ((DEBUG_INFO, "SetupEventLog: Set Locality from HOB into StartupLocalityEvent 0x%02x\n", StartupLocalityEvent.StartupLocality));
//
// Initialize StartupLocalityEvent
//
InitNoActionEvent(&NoActionEvent, sizeof(StartupLocalityEvent));
//
// Log EfiStartupLocalityEvent as the second Event
// TCG PC Client PFP spec. Section 9.3.4.3 Startup Locality Event
@ -1511,10 +1588,11 @@ SetupEventLog (
Status = TcgDxeLogEvent (
mTcg2EventInfo[Index].LogFormat,
&NoActionEvent,
sizeof(NoActionEvent),
sizeof(NoActionEvent.PCRIndex) + sizeof(NoActionEvent.EventType) + GetDigestListBinSize (&NoActionEvent.Digests) + sizeof(NoActionEvent.EventSize),
(UINT8 *)&StartupLocalityEvent,
NoActionEvent.EventSize
sizeof(StartupLocalityEvent)
);
}
}
}