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| author | Rodrigo Gonzalez del Cueto <rodrigo.gonzalez.del.cueto@intel.com> | 2021-12-17 10:47:07 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-12-17 15:03:43 +0000 |
| commit | 8ed8568922be9b5f7111fc1297317106aba7ab52 (patch) | |
| tree | 9a9ee361b39b4522c1352446792525b30938e526 /SecurityPkg/Tcg | |
| parent | b451c6908878c448c2a2aa6e9ca2a2dfe078fbb8 (diff) | |
| download | edk2-8ed8568922be9b5f7111fc1297317106aba7ab52.tar.gz edk2-8ed8568922be9b5f7111fc1297317106aba7ab52.tar.bz2 edk2-8ed8568922be9b5f7111fc1297317106aba7ab52.zip | |
SecurityPkg: Debug code to audit BIOS TPM extend operations
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2858
In V2: Fixed patch format and uncrustify cleanup
In V1: Add debug functionality to examine TPM extend operations
performed by BIOS and inspect the PCR 00 value prior to
any BIOS measurements.
Signed-off-by: Rodrigo Gonzalez del Cueto <rodrigo.gonzalez.del.cueto@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Diffstat (limited to 'SecurityPkg/Tcg')
| -rw-r--r-- | SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c index a97a4e7f2d..622989aff3 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 - 2020, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 2021, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017, Microsoft Corporation. All rights reserved. <BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -1106,6 +1106,13 @@ PeimEntryMA ( }
}
+ DEBUG_CODE_BEGIN ();
+ //
+ // Peek into TPM PCR 00 before any BIOS measurement.
+ //
+ Tpm2PcrReadForActiveBank (00, NULL);
+ DEBUG_CODE_END ();
+
//
// Only install TpmInitializedPpi on success
//
|