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* [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent
@ 2020-07-17  7:33 qi1.zhang
  2020-07-17  7:33 ` [PATCH v3 1/6] SecurityPkg/TcgPpi: Add TcgPpi header file Qi Zhang
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: qi1.zhang @ 2020-07-17  7:33 UTC (permalink / raw)
  To: devel; +Cc: Qi Zhang, Jiewen Yao, Jian J Wang, Chao Zhang, Rahul Kumar

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841

Currently, we have TCG/TCG2 protocol and DxeTpmMeasurementLib to let DXE
module extend the TCG event.
There is more and more use case in PEI phase that a PEIM need extend TCG
event, such as BootGuard, FSP, Microcode measurement. Currently, we dont
have API to do that so that each module need create TCG/TCG2 event log,
which is a burden.

This bugzilla requests to add PeiTpmMeasurementLib instance.

The implementation includes:
1) A EDKII_TCG_PPI which abstracts the HashLogExtendEvent service.
2) A PeiTpmMeasurementLib instance, so that a PEIM can call this API to
  add TCG event.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>

Jiewen Yao (6):
  SecurityPkg/TcgPpi: Add TcgPpi header file.
  SecurityPkg/dec: Add TcgPpi.
  SecurityPkg/Tcg: Add TcgPpi
  SecurityPkg/Tcg2: Add TcgPpi
  SecurityPkg/PeiTpmMeasurementLib: Add PEI instance.
  SecurityPkg/dsc: Add PeiTpmMeasurementLib.

 SecurityPkg/Include/Ppi/Tcg.h                 |  60 ++++++++++
 .../PeiTpmMeasurementLib.c                    |  74 ++++++++++++
 .../PeiTpmMeasurementLib.inf                  |  50 ++++++++
 .../PeiTpmMeasurementLib.uni                  |  17 +++
 SecurityPkg/SecurityPkg.dec                   |   3 +
 SecurityPkg/SecurityPkg.dsc                   |   4 +-
 SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c             | 110 +++++++++++++-----
 SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf           |   3 +-
 SecurityPkg/Tcg/TcgPei/TcgPei.c               |  61 +++++++++-
 SecurityPkg/Tcg/TcgPei/TcgPei.inf             |   3 +-
 10 files changed, 351 insertions(+), 34 deletions(-)
 create mode 100644 SecurityPkg/Include/Ppi/Tcg.h
 create mode 100644 SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c
 create mode 100644 SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf
 create mode 100644 SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.uni

-- 
2.26.2.windows.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH v3 1/6] SecurityPkg/TcgPpi: Add TcgPpi header file.
  2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
@ 2020-07-17  7:33 ` Qi Zhang
  2020-07-17  7:33 ` [PATCH v3 2/6] SecurityPkg/dec: Add TcgPpi Qi Zhang
                   ` (5 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Qi Zhang @ 2020-07-17  7:33 UTC (permalink / raw)
  To: devel; +Cc: Jiewen Yao, Jian J Wang, Chao Zhang, Qi Zhang

From: Jiewen Yao <jiewen.yao@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 SecurityPkg/Include/Ppi/Tcg.h | 60 +++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 SecurityPkg/Include/Ppi/Tcg.h

diff --git a/SecurityPkg/Include/Ppi/Tcg.h b/SecurityPkg/Include/Ppi/Tcg.h
new file mode 100644
index 0000000000..d86ff5961d
--- /dev/null
+++ b/SecurityPkg/Include/Ppi/Tcg.h
@@ -0,0 +1,60 @@
+/** @file
+  TCG PPI services.
+
+Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _TCG_PPI_H_
+#define _TCG_PPI_H_
+
+#include <IndustryStandard/UefiTcgPlatform.h>
+
+typedef struct _EDKII_TCG_PPI EDKII_TCG_PPI;
+
+//
+// This bit is shall be set when HashData is the pre-hash digest.
+//
+#define EFI_TCG2_PRE_HASH  0x0000000000000001
+
+/**
+  Tpm measure and log data, and extend the measurement result into a specific PCR.
+
+  @param[in]      This          Indicates the calling context
+  @param[in]      Flags         Bitmap providing additional information
+  @param[in]      HashData      If BIT0 of Flags is 0, it is physical address of the
+                                start of the data buffer to be hashed, extended, and logged.
+                                If BIT0 of Flags is 1, it is physical address of the
+                                start of the pre-hash data buffter to be extended, and logged.
+                                The pre-hash data format is TPML_DIGEST_VALUES.
+  @param[in]      HashDataLen   The length, in bytes, of the buffer referenced by HashData.
+  @param[in]      NewEventHdr   Pointer to a TCG_PCR_EVENT_HDR data structure.
+  @param[in]      NewEventData  Pointer to the new event data.
+
+  @retval EFI_SUCCESS           Operation completed successfully.
+  @retval EFI_UNSUPPORTED       TPM device not available.
+  @retval EFI_OUT_OF_RESOURCES  Out of memory.
+  @retval EFI_DEVICE_ERROR      The operation was unsuccessful.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EDKII_TCG_HASH_LOG_EXTEND_EVENT)(
+  IN      EDKII_TCG_PPI             *This,
+  IN      UINT64                    Flags,
+  IN      UINT8                     *HashData,
+  IN      UINTN                     HashDataLen,
+  IN      TCG_PCR_EVENT_HDR         *NewEventHdr,
+  IN      UINT8                     *NewEventData
+  );
+
+///
+/// The EFI_TCG Protocol abstracts TCG activity.
+///
+struct _EDKII_TCG_PPI {
+  EDKII_TCG_HASH_LOG_EXTEND_EVENT     HashLogExtendEvent;
+};
+
+extern EFI_GUID gEdkiiTcgPpiGuid;
+
+#endif
-- 
2.26.2.windows.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

* [PATCH v3 2/6] SecurityPkg/dec: Add TcgPpi.
  2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
  2020-07-17  7:33 ` [PATCH v3 1/6] SecurityPkg/TcgPpi: Add TcgPpi header file Qi Zhang
@ 2020-07-17  7:33 ` Qi Zhang
  2020-07-17  7:33 ` [PATCH v3 3/6] SecurityPkg/Tcg: " Qi Zhang
                   ` (4 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Qi Zhang @ 2020-07-17  7:33 UTC (permalink / raw)
  To: devel; +Cc: Jiewen Yao, Jian J Wang, Chao Zhang, Qi Zhang

From: Jiewen Yao <jiewen.yao@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 SecurityPkg/SecurityPkg.dec | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/SecurityPkg/SecurityPkg.dec b/SecurityPkg/SecurityPkg.dec
index 79d46308ad..42fc48cc1f 100644
--- a/SecurityPkg/SecurityPkg.dec
+++ b/SecurityPkg/SecurityPkg.dec
@@ -203,6 +203,9 @@
   ## Include/Ppi/FirmwareVolumeInfoStoredHashFv.h
   gEdkiiPeiFirmwareVolumeInfoStoredHashFvPpiGuid = {0x7f5e4e31, 0x81b1, 0x47e5, { 0x9e, 0x21, 0x1e, 0x4b, 0x5b, 0xc2, 0xf6, 0x1d } }
 
+  ## Include/Ppi/Tcg.h
+  gEdkiiTcgPpiGuid = {0x57a13b87, 0x133d, 0x4bf3, { 0xbf, 0xf1, 0x1b, 0xca, 0xc7, 0x17, 0x6c, 0xf1 } }
+
 #
 # [Error.gEfiSecurityPkgTokenSpaceGuid]
 #   0x80000001 | Invalid value provided.
-- 
2.26.2.windows.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

* [PATCH v3 3/6] SecurityPkg/Tcg: Add TcgPpi
  2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
  2020-07-17  7:33 ` [PATCH v3 1/6] SecurityPkg/TcgPpi: Add TcgPpi header file Qi Zhang
  2020-07-17  7:33 ` [PATCH v3 2/6] SecurityPkg/dec: Add TcgPpi Qi Zhang
@ 2020-07-17  7:33 ` Qi Zhang
  2020-07-17  7:33 ` [PATCH v3 4/6] SecurityPkg/Tcg2: " Qi Zhang
                   ` (3 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Qi Zhang @ 2020-07-17  7:33 UTC (permalink / raw)
  To: devel; +Cc: Jiewen Yao, Jian J Wang, Chao Zhang, Qi Zhang, Rahul Kumar

From: Jiewen Yao <jiewen.yao@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 SecurityPkg/Tcg/TcgPei/TcgPei.c   | 61 ++++++++++++++++++++++++++++---
 SecurityPkg/Tcg/TcgPei/TcgPei.inf |  3 +-
 2 files changed, 58 insertions(+), 6 deletions(-)

diff --git a/SecurityPkg/Tcg/TcgPei/TcgPei.c b/SecurityPkg/Tcg/TcgPei/TcgPei.c
index a9a808c9ec..2533388849 100644
--- a/SecurityPkg/Tcg/TcgPei/TcgPei.c
+++ b/SecurityPkg/Tcg/TcgPei/TcgPei.c
@@ -1,7 +1,7 @@
 /** @file
   Initialize TPM device and measure FVs before handing off control to DXE.
 
-Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2005 - 2020, Intel Corporation. All rights reserved.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -17,6 +17,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <Ppi/FirmwareVolume.h>
 #include <Ppi/EndOfPeiPhase.h>
 #include <Ppi/FirmwareVolumeInfoMeasurementExcluded.h>
+#include <Ppi/Tcg.h>
 
 #include <Guid/TcgEventHob.h>
 #include <Guid/MeasuredFvHob.h>
@@ -51,6 +52,45 @@ EFI_PEI_PPI_DESCRIPTOR  mTpmInitializationDonePpiList = {
   NULL
 };
 
+/**
+  Do a hash operation on a data buffer, extend a specific TPM PCR with the hash result,
+  and build a GUIDed HOB recording the event which will be passed to the DXE phase and
+  added into the Event Log.
+
+  @param[in]      This          Indicates the calling context
+  @param[in]      Flags         Bitmap providing additional information.
+  @param[in]      HashData      Physical address of the start of the data buffer
+                                to be hashed, extended, and logged.
+  @param[in]      HashDataLen   The length, in bytes, of the buffer referenced by HashData.
+  @param[in]      NewEventHdr   Pointer to a TCG_PCR_EVENT_HDR data structure.
+  @param[in]      NewEventData  Pointer to the new event data.
+
+  @retval EFI_SUCCESS           Operation completed successfully.
+  @retval EFI_OUT_OF_RESOURCES  No enough memory to log the new event.
+  @retval EFI_DEVICE_ERROR      The command was unsuccessful.
+
+**/
+EFI_STATUS
+EFIAPI
+HashLogExtendEvent (
+  IN      EDKII_TCG_PPI             *This,
+  IN      UINT64                    Flags,
+  IN      UINT8                     *HashData,
+  IN      UINTN                     HashDataLen,
+  IN      TCG_PCR_EVENT_HDR         *NewEventHdr,
+  IN      UINT8                     *NewEventData
+  );
+
+EDKII_TCG_PPI mEdkiiTcgPpi = {
+  HashLogExtendEvent
+};
+
+EFI_PEI_PPI_DESCRIPTOR  mTcgPpiList = {
+  EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
+  &gEdkiiTcgPpiGuid,
+  &mEdkiiTcgPpi
+};
+
 //
 // Number of firmware blobs to grow by each time we run out of room
 //
@@ -243,7 +283,8 @@ TpmCommHashAll (
   and build a GUIDed HOB recording the event which will be passed to the DXE phase and
   added into the Event Log.
 
-  @param[in]      PeiServices   Describes the list of possible PEI Services.
+  @param[in]      This          Indicates the calling context.
+  @param[in]      Flags         Bitmap providing additional information.
   @param[in]      HashData      Physical address of the start of the data buffer
                                 to be hashed, extended, and logged.
   @param[in]      HashDataLen   The length, in bytes, of the buffer referenced by HashData.
@@ -256,8 +297,10 @@ TpmCommHashAll (
 
 **/
 EFI_STATUS
+EFIAPI
 HashLogExtendEvent (
-  IN      EFI_PEI_SERVICES          **PeiServices,
+  IN      EDKII_TCG_PPI             *This,
+  IN      UINT64                    Flags,
   IN      UINT8                     *HashData,
   IN      UINTN                     HashDataLen,
   IN      TCG_PCR_EVENT_HDR         *NewEventHdr,
@@ -346,7 +389,8 @@ MeasureCRTMVersion (
   TcgEventHdr.EventSize = (UINT32) StrSize((CHAR16*)PcdGetPtr (PcdFirmwareVersionString));
 
   return HashLogExtendEvent (
-           PeiServices,
+           &mEdkiiTcgPpi,
+           0,
            (UINT8*)PcdGetPtr (PcdFirmwareVersionString),
            TcgEventHdr.EventSize,
            &TcgEventHdr,
@@ -415,7 +459,8 @@ MeasureFvImage (
   TcgEventHdr.EventSize = sizeof (FvBlob);
 
   Status = HashLogExtendEvent (
-             (EFI_PEI_SERVICES **) GetPeiServicesTablePointer(),
+             &mEdkiiTcgPpi,
+             0,
              (UINT8*) (UINTN) FvBlob.BlobBase,
              (UINTN) FvBlob.BlobLength,
              &TcgEventHdr,
@@ -744,6 +789,12 @@ PeimEntryMP (
   Status = PeiServicesNotifyPpi (&mNotifyList[0]);
   ASSERT_EFI_ERROR (Status);
 
+  //
+  // install Tcg Services
+  //
+  Status = PeiServicesInstallPpi (&mTcgPpiList);
+  ASSERT_EFI_ERROR (Status);
+
   return Status;
 }
 
diff --git a/SecurityPkg/Tcg/TcgPei/TcgPei.inf b/SecurityPkg/Tcg/TcgPei/TcgPei.inf
index c0bff6e85e..4ab4edd657 100644
--- a/SecurityPkg/Tcg/TcgPei/TcgPei.inf
+++ b/SecurityPkg/Tcg/TcgPei/TcgPei.inf
@@ -4,7 +4,7 @@
 #  This module will initialize TPM device, measure reported FVs and BIOS version.
 #  This module may also lock TPM physical presence and physicalPresenceLifetimeLock.
 #
-# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
 ##
@@ -67,6 +67,7 @@
   gPeiTpmInitializedPpiGuid                                           ## SOMETIMES_PRODUCES
   gPeiTpmInitializationDonePpiGuid                                    ## PRODUCES
   gEfiEndOfPeiSignalPpiGuid                                           ## SOMETIMES_CONSUMES     ## NOTIFY
+  gEdkiiTcgPpiGuid                                                    ## PRODUCES
 
 [Pcd]
   gEfiSecurityPkgTokenSpaceGuid.PcdPhysicalPresenceLifetimeLock       ## SOMETIMES_CONSUMES
-- 
2.26.2.windows.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

* [PATCH v3 4/6] SecurityPkg/Tcg2: Add TcgPpi
  2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
                   ` (2 preceding siblings ...)
  2020-07-17  7:33 ` [PATCH v3 3/6] SecurityPkg/Tcg: " Qi Zhang
@ 2020-07-17  7:33 ` Qi Zhang
  2020-07-17  7:33 ` [PATCH v3 5/6] SecurityPkg/PeiTpmMeasurementLib: Add PEI instance Qi Zhang
                   ` (2 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Qi Zhang @ 2020-07-17  7:33 UTC (permalink / raw)
  To: devel; +Cc: Jiewen Yao, Jian J Wang, Chao Zhang, Qi Zhang, Rahul Kumar

From: Jiewen Yao <jiewen.yao@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c   | 110 +++++++++++++++++++++-------
 SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf |   3 +-
 2 files changed, 86 insertions(+), 27 deletions(-)

diff --git a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
index 19b8e4b318..5344b7fd26 100644
--- a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
+++ b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
@@ -1,7 +1,7 @@
 /** @file
   Initialize TPM2 device and measure FVs before handing off control to DXE.
 
-Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>
 Copyright (c) 2017, Microsoft Corporation.  All rights reserved. <BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -17,6 +17,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <Ppi/EndOfPeiPhase.h>
 #include <Ppi/FirmwareVolumeInfoMeasurementExcluded.h>
 #include <Ppi/FirmwareVolumeInfoPrehashedFV.h>
+#include <Ppi/Tcg.h>
 
 #include <Guid/TcgEventHob.h>
 #include <Guid/MeasuredFvHob.h>
@@ -66,6 +67,48 @@ EFI_PEI_PPI_DESCRIPTOR  mTpmInitializationDonePpiList = {
   NULL
 };
 
+/**
+  Do a hash operation on a data buffer, extend a specific TPM PCR with the hash result,
+  and build a GUIDed HOB recording the event which will be passed to the DXE phase and
+  added into the Event Log.
+
+  @param[in]      This          Indicates the calling context
+  @param[in]      Flags         Bitmap providing additional information.
+  @param[in]      HashData      If BIT0 of Flags is 0, it is physical address of the
+                                start of the data buffer to be hashed, extended, and logged.
+                                If BIT0 of Flags is 1, it is physical address of the
+                                start of the pre-hash data buffter to be extended, and logged.
+                                The pre-hash data format is TPML_DIGEST_VALUES.
+  @param[in]      HashDataLen   The length, in bytes, of the buffer referenced by HashData.
+  @param[in]      NewEventHdr   Pointer to a TCG_PCR_EVENT_HDR data structure.
+  @param[in]      NewEventData  Pointer to the new event data.
+
+  @retval EFI_SUCCESS           Operation completed successfully.
+  @retval EFI_OUT_OF_RESOURCES  No enough memory to log the new event.
+  @retval EFI_DEVICE_ERROR      The command was unsuccessful.
+
+**/
+EFI_STATUS
+EFIAPI
+HashLogExtendEvent (
+  IN      EDKII_TCG_PPI             *This,
+  IN      UINT64                    Flags,
+  IN      UINT8                     *HashData,
+  IN      UINTN                     HashDataLen,
+  IN      TCG_PCR_EVENT_HDR         *NewEventHdr,
+  IN      UINT8                     *NewEventData
+  );
+
+EDKII_TCG_PPI mEdkiiTcgPpi = {
+  HashLogExtendEvent
+};
+
+EFI_PEI_PPI_DESCRIPTOR  mTcgPpiList = {
+  EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
+  &gEdkiiTcgPpiGuid,
+  &mEdkiiTcgPpi
+};
+
 //
 // Number of firmware blobs to grow by each time we run out of room
 //
@@ -375,9 +418,13 @@ LogHashEvent (
   and build a GUIDed HOB recording the event which will be passed to the DXE phase and
   added into the Event Log.
 
+  @param[in]      This          Indicates the calling context
   @param[in]      Flags         Bitmap providing additional information.
-  @param[in]      HashData      Physical address of the start of the data buffer
-                                to be hashed, extended, and logged.
+  @param[in]      HashData      If BIT0 of Flags is 0, it is physical address of the
+                                start of the data buffer to be hashed, extended, and logged.
+                                If BIT0 of Flags is 1, it is physical address of the
+                                start of the pre-hash data buffter to be extended, and logged.
+                                The pre-hash data format is TPML_DIGEST_VALUES.
   @param[in]      HashDataLen   The length, in bytes, of the buffer referenced by HashData.
   @param[in]      NewEventHdr   Pointer to a TCG_PCR_EVENT_HDR data structure.
   @param[in]      NewEventData  Pointer to the new event data.
@@ -388,7 +435,9 @@ LogHashEvent (
 
 **/
 EFI_STATUS
+EFIAPI
 HashLogExtendEvent (
+  IN      EDKII_TCG_PPI             *This,
   IN      UINT64                    Flags,
   IN      UINT8                     *HashData,
   IN      UINTN                     HashDataLen,
@@ -403,16 +452,23 @@ HashLogExtendEvent (
     return EFI_DEVICE_ERROR;
   }
 
-  Status = HashAndExtend (
-             NewEventHdr->PCRIndex,
-             HashData,
-             HashDataLen,
+  if(Flags & EFI_TCG2_PRE_HASH) {
+    ZeroMem (&DigestList, sizeof(DigestList));
+    CopyMem(&DigestList, HashData, sizeof(DigestList));
+    Status = Tpm2PcrExtend(
+             0,
              &DigestList
              );
+  } else {
+    Status = HashAndExtend (
+               NewEventHdr->PCRIndex,
+               HashData,
+               HashDataLen,
+               &DigestList
+               );
+  }
   if (!EFI_ERROR (Status)) {
-    if ((Flags & EFI_TCG2_EXTEND_ONLY) == 0) {
-      Status = LogHashEvent (&DigestList, NewEventHdr, NewEventData);
-    }
+    Status = LogHashEvent (&DigestList, NewEventHdr, NewEventData);
   }
 
   if (Status == EFI_DEVICE_ERROR) {
@@ -452,6 +508,7 @@ MeasureCRTMVersion (
   TcgEventHdr.EventSize = (UINT32) StrSize((CHAR16*)PcdGetPtr (PcdFirmwareVersionString));
 
   return HashLogExtendEvent (
+           &mEdkiiTcgPpi,
            0,
            (UINT8*)PcdGetPtr (PcdFirmwareVersionString),
            TcgEventHdr.EventSize,
@@ -651,27 +708,22 @@ MeasureFvImage (
     // FV pre-hash algos comply with current TPM hash requirement
     // Skip hashing step in measure, only extend DigestList to PCR and log event
     //
-    Status = Tpm2PcrExtend(
-               0,
-               &DigestList
+    Status = HashLogExtendEvent (
+               &mEdkiiTcgPpi,
+               EFI_TCG2_PRE_HASH,
+               (UINT8*) &DigestList,        // HashData
+               (UINTN) sizeof(DigestList),  // HashDataLen
+               &TcgEventHdr,                // EventHdr
+               EventData                    // EventData
                );
-
-    if (!EFI_ERROR(Status)) {
-       Status = LogHashEvent (&DigestList, &TcgEventHdr, EventData);
-       DEBUG ((DEBUG_INFO, "The pre-hashed FV which is extended & logged by Tcg2Pei starts at: 0x%x\n", FvBase));
-       DEBUG ((DEBUG_INFO, "The pre-hashed FV which is extended & logged by Tcg2Pei has the size: 0x%x\n", FvLength));
-    } else if (Status == EFI_DEVICE_ERROR) {
-      BuildGuidHob (&gTpmErrorHobGuid,0);
-      REPORT_STATUS_CODE (
-        EFI_ERROR_CODE | EFI_ERROR_MINOR,
-        (PcdGet32 (PcdStatusCodeSubClassTpmDevice) | EFI_P_EC_INTERFACE_ERROR)
-        );
-    }
+    DEBUG ((DEBUG_INFO, "The pre-hashed FV which is extended & logged by Tcg2Pei starts at: 0x%x\n", FvBase));
+    DEBUG ((DEBUG_INFO, "The pre-hashed FV which is extended & logged by Tcg2Pei has the size: 0x%x\n", FvLength));
   } else {
     //
     // Hash the FV, extend digest to the TPM and log TCG event
     //
     Status = HashLogExtendEvent (
+               &mEdkiiTcgPpi,
                0,
                (UINT8*) (UINTN) FvBase, // HashData
                (UINTN) FvLength,        // HashDataLen
@@ -849,6 +901,12 @@ PeimEntryMP (
 {
   EFI_STATUS                        Status;
 
+  //
+  // install Tcg Services
+  //
+  Status = PeiServicesInstallPpi (&mTcgPpiList);
+  ASSERT_EFI_ERROR (Status);
+
   if (PcdGet8 (PcdTpm2ScrtmPolicy) == 1) {
     Status = MeasureCRTMVersion ();
   }
@@ -893,7 +951,7 @@ MeasureSeparatorEventWithError (
   TcgEvent.PCRIndex  = PCRIndex;
   TcgEvent.EventType = EV_SEPARATOR;
   TcgEvent.EventSize = (UINT32)sizeof (EventData);
-  return HashLogExtendEvent(0,(UINT8 *)&EventData, TcgEvent.EventSize, &TcgEvent,(UINT8 *)&EventData);
+  return HashLogExtendEvent(&mEdkiiTcgPpi, 0, (UINT8 *)&EventData, TcgEvent.EventSize, &TcgEvent,(UINT8 *)&EventData);
 }
 
 /**
diff --git a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf
index 3d361e8859..f64b29f1ae 100644
--- a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf
+++ b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf
@@ -8,7 +8,7 @@
 #
 #  This module will initialize TPM device, measure reported FVs and BIOS version.
 #
-# Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>
 # Copyright (c) 2017, Microsoft Corporation.  All rights reserved. <BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -72,6 +72,7 @@
   gPeiTpmInitializationDonePpiGuid                                     ## PRODUCES
   gEfiEndOfPeiSignalPpiGuid                                            ## SOMETIMES_CONSUMES     ## NOTIFY
   gEdkiiPeiFirmwareVolumeInfoPrehashedFvPpiGuid                        ## SOMETIMES_CONSUMES
+  gEdkiiTcgPpiGuid                                                     ## PRODUCES
 
 [Pcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString              ## SOMETIMES_CONSUMES
-- 
2.26.2.windows.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

* [PATCH v3 5/6] SecurityPkg/PeiTpmMeasurementLib: Add PEI instance.
  2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
                   ` (3 preceding siblings ...)
  2020-07-17  7:33 ` [PATCH v3 4/6] SecurityPkg/Tcg2: " Qi Zhang
@ 2020-07-17  7:33 ` Qi Zhang
  2020-07-17  7:33 ` [PATCH v3 6/6] SecurityPkg/dsc: Add PeiTpmMeasurementLib Qi Zhang
  2020-07-17  7:47 ` [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent Yao, Jiewen
  6 siblings, 0 replies; 8+ messages in thread
From: Qi Zhang @ 2020-07-17  7:33 UTC (permalink / raw)
  To: devel; +Cc: Jiewen Yao, Jian J Wang, Chao Zhang, Qi Zhang

From: Jiewen Yao <jiewen.yao@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 .../PeiTpmMeasurementLib.c                    | 74 +++++++++++++++++++
 .../PeiTpmMeasurementLib.inf                  | 50 +++++++++++++
 .../PeiTpmMeasurementLib.uni                  | 17 +++++
 3 files changed, 141 insertions(+)
 create mode 100644 SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c
 create mode 100644 SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf
 create mode 100644 SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.uni

diff --git a/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c
new file mode 100644
index 0000000000..1a590e0c9e
--- /dev/null
+++ b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c
@@ -0,0 +1,74 @@
+/** @file
+  This library is used by other modules to measure data to TPM.
+
+Copyright (c) 2020, Intel Corporation. All rights reserved. <BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiPei.h>
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/PeiServicesTablePointerLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/TpmMeasurementLib.h>
+
+#include <Ppi/Tcg.h>
+#include <IndustryStandard/UefiTcgPlatform.h>
+
+/**
+  Tpm measure and log data, and extend the measurement result into a specific PCR.
+
+  @param[in]  PcrIndex         PCR Index.
+  @param[in]  EventType        Event type.
+  @param[in]  EventLog         Measurement event log.
+  @param[in]  LogLen           Event log length in bytes.
+  @param[in]  HashData         The start of the data buffer to be hashed, extended.
+  @param[in]  HashDataLen      The length, in bytes, of the buffer referenced by HashData
+
+  @retval EFI_SUCCESS               Operation completed successfully.
+  @retval EFI_UNSUPPORTED       TPM device not available.
+  @retval EFI_OUT_OF_RESOURCES  Out of memory.
+  @retval EFI_DEVICE_ERROR      The operation was unsuccessful.
+**/
+EFI_STATUS
+EFIAPI
+TpmMeasureAndLogData (
+  IN UINT32             PcrIndex,
+  IN UINT32             EventType,
+  IN VOID               *EventLog,
+  IN UINT32             LogLen,
+  IN VOID               *HashData,
+  IN UINT64             HashDataLen
+  )
+{
+  EFI_STATUS                Status;
+  EDKII_TCG_PPI             *TcgPpi;
+  TCG_PCR_EVENT_HDR         TcgEventHdr;
+
+  Status = PeiServicesLocatePpi(
+             &gEdkiiTcgPpiGuid,
+             0,
+             NULL,
+             (VOID**)&TcgPpi
+             );
+  if (EFI_ERROR(Status)) {
+    return Status;
+  }
+
+  TcgEventHdr.PCRIndex  = PcrIndex;
+  TcgEventHdr.EventType = EventType;
+  TcgEventHdr.EventSize = LogLen;
+
+  Status = TcgPpi->HashLogExtendEvent (
+                     TcgPpi,
+                     0,
+                     HashData,
+                     (UINTN)HashDataLen,
+                     &TcgEventHdr,
+                     EventLog
+                     );
+  return Status;
+}
diff --git a/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf
new file mode 100644
index 0000000000..6625d0fd01
--- /dev/null
+++ b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf
@@ -0,0 +1,50 @@
+## @file
+#  Provides TPM measurement functions for TPM1.2 and TPM 2.0
+#
+#  This library provides TpmMeasureAndLogData() to measure and log data, and
+#  extend the measurement result into a specific PCR.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PeiTpmMeasurementLib
+  FILE_GUID                      = 9A62C49D-C45A-4322-9F3C-45958DF0056B
+  MODULE_TYPE                    = PEIM
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = TpmMeasurementLib|PEIM
+  MODULE_UNI_FILE                = PeiTpmMeasurementLib.uni
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64
+#
+
+[Sources]
+  PeiTpmMeasurementLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  SecurityPkg/SecurityPkg.dec
+
+[LibraryClasses]
+  BaseLib
+  BaseMemoryLib
+  HobLib
+  DebugLib
+  PcdLib
+  PrintLib
+  PeiServicesLib
+  PeiServicesTablePointerLib
+
+[Ppis]
+  gEdkiiTcgPpiGuid                                                     ## CONSUMES
+
+[Depex]
+  gEfiPeiMasterBootModePpiGuid AND
+  gEfiTpmDeviceSelectedGuid
diff --git a/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.uni b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.uni
new file mode 100644
index 0000000000..7b4341b449
--- /dev/null
+++ b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.uni
@@ -0,0 +1,17 @@
+// /** @file
+// Provides TPM measurement functions for TPM1.2 and TPM 2.0
+//
+// This library provides TpmMeasureAndLogData() to to measure and log data, and
+// extend the measurement result into a specific PCR.
+//
+// Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "Provides TPM measurement functions for TPM1.2 and TPM 2.0"
+
+#string STR_MODULE_DESCRIPTION          #language en-US "This library provides TpmMeasureAndLogData() to to measure and log data, and extend the measurement result into a specific PCR."
+
-- 
2.26.2.windows.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

* [PATCH v3 6/6] SecurityPkg/dsc: Add PeiTpmMeasurementLib.
  2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
                   ` (4 preceding siblings ...)
  2020-07-17  7:33 ` [PATCH v3 5/6] SecurityPkg/PeiTpmMeasurementLib: Add PEI instance Qi Zhang
@ 2020-07-17  7:33 ` Qi Zhang
  2020-07-17  7:47 ` [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent Yao, Jiewen
  6 siblings, 0 replies; 8+ messages in thread
From: Qi Zhang @ 2020-07-17  7:33 UTC (permalink / raw)
  To: devel; +Cc: Jiewen Yao, Jian J Wang, Chao Zhang, Qi Zhang

From: Jiewen Yao <jiewen.yao@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 SecurityPkg/SecurityPkg.dsc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/SecurityPkg/SecurityPkg.dsc b/SecurityPkg/SecurityPkg.dsc
index 53fce05353..28effe3eda 100644
--- a/SecurityPkg/SecurityPkg.dsc
+++ b/SecurityPkg/SecurityPkg.dsc
@@ -1,7 +1,7 @@
 ## @file
 #  Security Module Package for All Architectures.
 #
-# Copyright (c) 2009 - 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2009 - 2020, Intel Corporation. All rights reserved.<BR>
 # (C) Copyright 2015-2020 Hewlett Packard Enterprise Development LP<BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -96,6 +96,7 @@
   Tpm12DeviceLib|SecurityPkg/Library/Tpm12DeviceLibDTpm/Tpm12DeviceLibDTpm.inf
   Tpm2DeviceLib|SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.inf
   Tcg2PhysicalPresenceLib|SecurityPkg/Library/PeiTcg2PhysicalPresenceLib/PeiTcg2PhysicalPresenceLib.inf
+  TpmMeasurementLib|SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf
   RngLib|MdePkg/Library/BaseRngLib/BaseRngLib.inf
 
 [LibraryClasses.common.DXE_DRIVER]
@@ -234,6 +235,7 @@
   SecurityPkg/Library/FmpAuthenticationLibPkcs7/FmpAuthenticationLibPkcs7.inf
   SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.inf
 
+  SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf
   SecurityPkg/Library/DxeTpmMeasurementLib/DxeTpmMeasurementLib.inf
   SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.inf
   SecurityPkg/Library/Tcg2PpVendorLibNull/Tcg2PpVendorLibNull.inf
-- 
2.26.2.windows.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

* Re: [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent
  2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
                   ` (5 preceding siblings ...)
  2020-07-17  7:33 ` [PATCH v3 6/6] SecurityPkg/dsc: Add PeiTpmMeasurementLib Qi Zhang
@ 2020-07-17  7:47 ` Yao, Jiewen
  6 siblings, 0 replies; 8+ messages in thread
From: Yao, Jiewen @ 2020-07-17  7:47 UTC (permalink / raw)
  To: Zhang, Qi1, devel@edk2.groups.io; +Cc: Wang, Jian J, Chao Zhang, Kumar, Rahul1

Thank you very much, Qi.

I forgot to mention that we should change the name EFI_TCG2_PRE_HASH  to EDKII_TCG_PRE_HASH.
The EFI_* prefix is only for standard defined protocol/PPI.
Since this is our EDKII extension, we should use EDKII_* prefix.

With that change, the series:
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>


> -----Original Message-----
> From: Zhang, Qi1 <qi1.zhang@intel.com>
> Sent: Friday, July 17, 2020 3:33 PM
> To: devel@edk2.groups.io
> Cc: Zhang, Qi1 <qi1.zhang@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>;
> Wang, Jian J <jian.j.wang@intel.com>; Chao Zhang <chao.b.zhang@intel.com>;
> Kumar, Rahul1 <rahul1.kumar@intel.com>
> Subject: [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2841
> 
> Currently, we have TCG/TCG2 protocol and DxeTpmMeasurementLib to let DXE
> module extend the TCG event.
> There is more and more use case in PEI phase that a PEIM need extend TCG
> event, such as BootGuard, FSP, Microcode measurement. Currently, we dont
> have API to do that so that each module need create TCG/TCG2 event log,
> which is a burden.
> 
> This bugzilla requests to add PeiTpmMeasurementLib instance.
> 
> The implementation includes:
> 1) A EDKII_TCG_PPI which abstracts the HashLogExtendEvent service.
> 2) A PeiTpmMeasurementLib instance, so that a PEIM can call this API to
>   add TCG event.
> 
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Jian J Wang <jian.j.wang@intel.com>
> Cc: Chao Zhang <chao.b.zhang@intel.com>
> Cc: Qi Zhang <qi1.zhang@intel.com>
> Cc: Rahul Kumar <rahul1.kumar@intel.com>
> 
> Jiewen Yao (6):
>   SecurityPkg/TcgPpi: Add TcgPpi header file.
>   SecurityPkg/dec: Add TcgPpi.
>   SecurityPkg/Tcg: Add TcgPpi
>   SecurityPkg/Tcg2: Add TcgPpi
>   SecurityPkg/PeiTpmMeasurementLib: Add PEI instance.
>   SecurityPkg/dsc: Add PeiTpmMeasurementLib.
> 
>  SecurityPkg/Include/Ppi/Tcg.h                 |  60 ++++++++++
>  .../PeiTpmMeasurementLib.c                    |  74 ++++++++++++
>  .../PeiTpmMeasurementLib.inf                  |  50 ++++++++
>  .../PeiTpmMeasurementLib.uni                  |  17 +++
>  SecurityPkg/SecurityPkg.dec                   |   3 +
>  SecurityPkg/SecurityPkg.dsc                   |   4 +-
>  SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c             | 110 +++++++++++++-----
>  SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf           |   3 +-
>  SecurityPkg/Tcg/TcgPei/TcgPei.c               |  61 +++++++++-
>  SecurityPkg/Tcg/TcgPei/TcgPei.inf             |   3 +-
>  10 files changed, 351 insertions(+), 34 deletions(-)
>  create mode 100644 SecurityPkg/Include/Ppi/Tcg.h
>  create mode 100644
> SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c
>  create mode 100644
> SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.inf
>  create mode 100644
> SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.uni
> 
> --
> 2.26.2.windows.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2020-07-17  7:47 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-07-17  7:33 [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent qi1.zhang
2020-07-17  7:33 ` [PATCH v3 1/6] SecurityPkg/TcgPpi: Add TcgPpi header file Qi Zhang
2020-07-17  7:33 ` [PATCH v3 2/6] SecurityPkg/dec: Add TcgPpi Qi Zhang
2020-07-17  7:33 ` [PATCH v3 3/6] SecurityPkg/Tcg: " Qi Zhang
2020-07-17  7:33 ` [PATCH v3 4/6] SecurityPkg/Tcg2: " Qi Zhang
2020-07-17  7:33 ` [PATCH v3 5/6] SecurityPkg/PeiTpmMeasurementLib: Add PEI instance Qi Zhang
2020-07-17  7:33 ` [PATCH v3 6/6] SecurityPkg/dsc: Add PeiTpmMeasurementLib Qi Zhang
2020-07-17  7:47 ` [PATCH v3 0/6] Add capability to let PEIM extend TcgEvent Yao, Jiewen

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