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SecurityPkg: Tcg2: Fix TCG2 PP issues 

Several issues exist in TCG2 PP
1. TCG2 PP use NVS PPRQ/PPRM as PP parameter as well as current
PP state cache. But it doesn't handle PP set failure case
2. TCG2 PP Submit TPM Operation Request to Pre-OS Environment forgets
to clean PPRM
3. Potential alignment issue

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Qin Long <qin.long@intel.com>
This commit is contained in:
Zhang, Chao B 2016-09-27 09:46:40 +08:00
parent ab970515d2
commit edb0fda25e
4 changed files with 111 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
SecurityPkg/Include/Library/Tcg2PhysicalPresenceLib.h
View File

@ -2,7 +2,7 @@
Ihis library is intended to be used by BDS modules.
This library will execute TPM2 request.
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -116,6 +116,26 @@ Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (
OUT UINT32 *Response
);
/**
The handler for TPM physical presence function:
Submit TPM Operation Request to Pre-OS Environment and
Submit TPM Operation Request to Pre-OS Environment 2.
This API should be invoked in OS runtime phase to interface with ACPI method.
Caution: This function may receive untrusted input.
@param[in out] Pointer to OperationRequest TPM physical presence operation request.
@param[in out] Pointer to RequestParameter TPM physical presence operation request parameter.
@return Return Code for Submit TPM Operation Request to Pre-OS Environment and
Submit TPM Operation Request to Pre-OS Environment 2.
**/
UINT32
Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx (
IN OUT UINT32 *OperationRequest,
IN OUT UINT32 *RequestParameter
);
/**
The handler for TPM physical presence function:

93
SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
View File

@ -28,6 +28,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Protocol/SmmVariable.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemorylib.h>
#include <Library/Tcg2PpVendorLib.h>
#include <Library/SmmServicesTableLib.h>
@ -90,25 +91,26 @@ Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (
Caution: This function may receive untrusted input.
@param[in] OperationRequest TPM physical presence operation request.
@param[in] RequestParameter TPM physical presence operation request parameter.
@param[in out] Pointer to OperationRequest TPM physical presence operation request.
@param[in out] Pointer to RequestParameter TPM physical presence operation request parameter.
@return Return Code for Submit TPM Operation Request to Pre-OS Environment and
Submit TPM Operation Request to Pre-OS Environment 2.
**/
UINT32
EFIAPI
Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (
IN UINT32 OperationRequest,
IN UINT32 RequestParameter
Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx (
IN OUT UINT32 *OperationRequest,
IN OUT UINT32 *RequestParameter
)
{
EFI_STATUS Status;
UINT32 ReturnCode;
UINTN DataSize;
EFI_TCG2_PHYSICAL_PRESENCE PpData;
EFI_TCG2_PHYSICAL_PRESENCE_FLAGS Flags;
DEBUG ((EFI_D_INFO, "[TPM2] SubmitRequestToPreOSFunction, Request = %x, %x\n", OperationRequest, RequestParameter));
DEBUG ((EFI_D_INFO, "[TPM2] SubmitRequestToPreOSFunction, Request = %x, %x\n", *OperationRequest, *RequestParameter));
ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS;
//
// Get the Physical Presence variable
@ -123,21 +125,23 @@ Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));
return TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;
ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;
goto EXIT;
}
if ((OperationRequest > TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) &&
(OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) ) {
if ((*OperationRequest > TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) &&
(*OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) ) {
//
// This command requires UI to prompt user for Auth data.
//
return TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED;
ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED;
goto EXIT;
}
if ((PpData.PPRequest != OperationRequest) ||
(PpData.PPRequestParameter != RequestParameter)) {
PpData.PPRequest = (UINT8)OperationRequest;
PpData.PPRequestParameter = RequestParameter;
if ((PpData.PPRequest != *OperationRequest) ||
(PpData.PPRequestParameter != *RequestParameter)) {
PpData.PPRequest = (UINT8)*OperationRequest;
PpData.PPRequestParameter = *RequestParameter;
DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);
Status = mTcg2PpSmmVariable->SmmSetVariable (
TCG2_PHYSICAL_PRESENCE_VARIABLE,
@ -150,10 +154,11 @@ Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "[TPM2] Set PP variable failure! Status = %r\n", Status));
return TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;
ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;
goto EXIT;
}
if (OperationRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
if (*OperationRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);
Status = mTcg2PpSmmVariable->SmmGetVariable (
TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,
@ -165,10 +170,60 @@ Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (
if (EFI_ERROR (Status)) {
Flags.PPFlags = TCG2_BIOS_TPM_MANAGEMENT_FLAG_DEFAULT;
}
return Tcg2PpVendorLibSubmitRequestToPreOSFunction (OperationRequest, Flags.PPFlags, RequestParameter);
ReturnCode = Tcg2PpVendorLibSubmitRequestToPreOSFunction (*OperationRequest, Flags.PPFlags, *RequestParameter);
}
return TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS;
EXIT:
//
// Sync PPRQ/PPRM from PP Variable if PP submission fails
//
if (ReturnCode != TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS) {
DEBUG ((EFI_D_ERROR, "[TPM2] Submit PP Request failure! Sync PPRQ/PPRM with PP variable.\n", Status));
DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);
ZeroMem(&PpData, DataSize);
Status = mTcg2PpSmmVariable->SmmGetVariable (
TCG2_PHYSICAL_PRESENCE_VARIABLE,
&gEfiTcg2PhysicalPresenceGuid,
NULL,
&DataSize,
&PpData
);
*OperationRequest = (UINT32)PpData.PPRequest;
*RequestParameter = PpData.PPRequestParameter;
}
return ReturnCode;
}
/**
The handler for TPM physical presence function:
Submit TPM Operation Request to Pre-OS Environment and
Submit TPM Operation Request to Pre-OS Environment 2.
This API should be invoked in OS runtime phase to interface with ACPI method.
Caution: This function may receive untrusted input.
@param[in] OperationRequest TPM physical presence operation request.
@param[in] RequestParameter TPM physical presence operation request parameter.
@return Return Code for Submit TPM Operation Request to Pre-OS Environment and
Submit TPM Operation Request to Pre-OS Environment 2.
**/
UINT32
EFIAPI
Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (
IN UINT32 OperationRequest,
IN UINT32 RequestParameter
)
{
UINT32 TempOperationRequest;
UINT32 TempRequestParameter;
TempOperationRequest = OperationRequest;
TempRequestParameter = RequestParameter;
return Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx(&TempOperationRequest, &TempRequestParameter);
}
/**

14
SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
View File

@ -119,6 +119,9 @@ PhysicalPresenceCallback (
{
UINT32 MostRecentRequest;
UINT32 Response;
UINT32 OperationRequest;
UINT32 RequestParameter;
if (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_RETURN_REQUEST_RESPONSE_TO_OS) {
mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (
@ -130,10 +133,15 @@ PhysicalPresenceCallback (
return EFI_SUCCESS;
} else if ((mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS)
|| (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS_2)) {
mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (
mTcgNvs->PhysicalPresence.Request,
mTcgNvs->PhysicalPresence.RequestParameter
OperationRequest = mTcgNvs->PhysicalPresence.Request;
RequestParameter = mTcgNvs->PhysicalPresence.RequestParameter;
mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx (
&OperationRequest,
&RequestParameter
);
mTcgNvs->PhysicalPresence.Request = OperationRequest;
mTcgNvs->PhysicalPresence.RequestParameter = RequestParameter;
} else if (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_GET_USER_CONFIRMATION_STATUS_FOR_REQUEST) {
mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction (mTcgNvs->PPRequestUserConfirm);
}

1
SecurityPkg/Tcg/Tcg2Smm/Tpm.asl
View File

@ -198,6 +198,7 @@ DefinitionBlock (
//
Store (DerefOf (Index (Arg2, 0x00)), PPRQ)
Store (0, PPRM)
Store (0x02, PPIP)
//