tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

SecurityPkg: Support PP version lower than 1.3 

TCG PP 1.2 & PP 1.3 spec defined different Opcodes.
Update code to support both.

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>
Reviewed-by: Yao Jiewen <jiewen.yao@intel.com>
This commit is contained in:
Zhang, Chao B 2018-02-02 16:16:05 +08:00
parent c0d9813cec
commit 84391f5795
2 changed files with 30 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
View File

@ -10,7 +10,7 @@
Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction() and Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction()
will receive untrusted input and do validation.
Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2015 - 2018, 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
@ -27,12 +27,16 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Protocol/SmmVariable.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/Tcg2PpVendorLib.h>
#include <Library/SmmServicesTableLib.h>
#define PP_INF_VERSION_1_2 "1.2"
EFI_SMM_VARIABLE_PROTOCOL *mTcg2PpSmmVariable;
BOOLEAN mIsTcg2PPVerLowerThan_1_3 = FALSE;
/**
The handler for TPM physical presence function:
@ -337,11 +341,22 @@ Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction (
break;
default:
if (OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
//
// TCG PP spec defined operations that are reserved or un-implemented
//
return TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;
if (mIsTcg2PPVerLowerThan_1_3 == FALSE) {
if (OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
//
// TCG2 PP1.3 spec defined operations that are reserved or un-implemented
//
return TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;
}
} else {
//
// TCG PP lower than 1.3. (1.0, 1.1, 1.2)
//
if (OperationRequest <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {
RequestConfirmed = TRUE;
} else if (OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
return TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;
}
}
break;
}
@ -377,6 +392,10 @@ Tcg2PhysicalPresenceLibConstructor (
{
EFI_STATUS Status;
if (AsciiStrnCmp(PP_INF_VERSION_1_2, (CHAR8 *)PcdGetPtr(PcdTcgPhysicalPresenceInterfaceVer), sizeof(PP_INF_VERSION_1_2) - 1) <= 0) {
mIsTcg2PPVerLowerThan_1_3 = TRUE;
}
//
// Locate SmmVariableProtocol.
//

5
SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.inf
View File

@ -7,7 +7,7 @@
# This driver will have external input - variable.
# This external input must be validated carefully to avoid security issue.
#
# Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2015 - 2018, 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
@ -53,5 +53,8 @@
## SOMETIMES_CONSUMES ## Variable:L"PhysicalPresenceFlags"
gEfiTcg2PhysicalPresenceGuid
[Pcd]
gEfiSecurityPkgTokenSpaceGuid.PcdTcgPhysicalPresenceInterfaceVer ## CONSUMES
[Depex]
gEfiSmmVariableProtocolGuid