REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1614
When we allocate pool to save rebased the PEIMs, the address will change
randomly, therefore the hash will change and result PCR0 change as well.
To avoid this, we save the raw PEIMs and use it to calculate hash.
The TcgPei calculate the hash and it use the Migrated FV Info.
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Chao Zhang <chao.b.zh...@intel.com>
Cc: Qi Zhang <qi1.zh...@intel.com>
Cc: Rahul Kumar <rahul1.ku...@intel.com>
Signed-off-by: Guomin Jiang <guomin.ji...@intel.com>
---
SecurityPkg/Tcg/TcgPei/TcgPei.inf | 1 +
SecurityPkg/Tcg/TcgPei/TcgPei.c | 29 +++++++++++++++++++++++++++--
2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/SecurityPkg/Tcg/TcgPei/TcgPei.inf
b/SecurityPkg/Tcg/TcgPei/TcgPei.inf
index c0bff6e85e9d..6d1951f8ed65 100644
--- a/SecurityPkg/Tcg/TcgPei/TcgPei.inf
+++ b/SecurityPkg/Tcg/TcgPei/TcgPei.inf
@@ -58,6 +58,7 @@ [Guids]
gTpmErrorHobGuid ##
SOMETIMES_PRODUCES ## HOB
gMeasuredFvHobGuid ##
PRODUCES ## HOB
gEfiTpmDeviceInstanceTpm12Guid ##
PRODUCES ## GUID # TPM device identifier
+ gEdkiiMigratedFvInfoGuid ##
SOMETIMES_CONSUMES ## HOB
[Ppis]
gPeiLockPhysicalPresencePpiGuid ##
SOMETIMES_CONSUMES ## NOTIFY
diff --git a/SecurityPkg/Tcg/TcgPei/TcgPei.c b/SecurityPkg/Tcg/TcgPei/TcgPei.c
index a9a808c9ecf3..9701bfe8715b 100644
--- a/SecurityPkg/Tcg/TcgPei/TcgPei.c
+++ b/SecurityPkg/Tcg/TcgPei/TcgPei.c
@@ -21,6 +21,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Guid/TcgEventHob.h>
#include <Guid/MeasuredFvHob.h>
#include <Guid/TpmInstance.h>
+#include <Guid/MigratedFvInfo.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
@@ -378,6 +379,10 @@ MeasureFvImage (
EFI_STATUS Status;
EFI_PLATFORM_FIRMWARE_BLOB FvBlob;
TCG_PCR_EVENT_HDR TcgEventHdr;
+ EFI_PHYSICAL_ADDRESS FvOrgBase;
+ EFI_PHYSICAL_ADDRESS FvDataBase;
+ EFI_PEI_HOB_POINTERS Hob;
+ EDKII_MIGRATED_FV_INFO *MigratedFvInfo;
//
// Check if it is in Excluded FV list
@@ -401,10 +406,30 @@ MeasureFvImage (
}
}
+ //
+ // Search the matched migration FV info
+ //
+ FvOrgBase = FvBase;
+ FvDataBase = FvBase;
+ Hob.Raw = GetFirstGuidHob (&gEdkiiMigratedFvInfoGuid);
+ while (Hob.Raw != NULL) {
+ MigratedFvInfo = GET_GUID_HOB_DATA (Hob);
+ if ((MigratedFvInfo->FvNewBase == (UINT32) FvBase) &&
(MigratedFvInfo->FvLength == (UINT32) FvLength)) {
+ //
+ // Found the migrated FV info
+ //
+ FvOrgBase = (EFI_PHYSICAL_ADDRESS) (UINTN) MigratedFvInfo->FvOrgBase;
+ FvDataBase = (EFI_PHYSICAL_ADDRESS) (UINTN) MigratedFvInfo->FvDataBase;
+ break;
+ }
+ Hob.Raw = GET_NEXT_HOB (Hob);
+ Hob.Raw = GetNextGuidHob (&gEdkiiMigratedFvInfoGuid, Hob.Raw);
+ }
+
//
// Measure and record the FV to the TPM
//
- FvBlob.BlobBase = FvBase;
+ FvBlob.BlobBase = FvOrgBase;
FvBlob.BlobLength = FvLength;
DEBUG ((DEBUG_INFO, "The FV which is measured by TcgPei starts at: 0x%x\n",
FvBlob.BlobBase));
@@ -416,7 +441,7 @@ MeasureFvImage (
Status = HashLogExtendEvent (
(EFI_PEI_SERVICES **) GetPeiServicesTablePointer(),
- (UINT8*) (UINTN) FvBlob.BlobBase,
+ (UINT8*) (UINTN) FvDataBase,
(UINTN) FvBlob.BlobLength,
&TcgEventHdr,
(UINT8*) &FvBlob
--
2.25.1.windows.1
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