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| author | Kun Qin <kun.q@outlook.com> | 2021-03-04 20:14:15 -0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-03-05 15:25:07 +0000 |
| commit | 59a3ccb09e7a246913d88fbac31412f20f717a3c (patch) | |
| tree | 31f8c2d66f9e7b0ec846d157e01bb9b612ea1347 /SecurityPkg/Tcg | |
| parent | 8802583c48e85c77a2782b4eda3b5ec5f2ff59ea (diff) | |
| download | edk2-59a3ccb09e7a246913d88fbac31412f20f717a3c.tar.gz | |
SecurityPkg: Tcg2Acpi: Added unblock memory interface for NVS region
This changes added usage of MmUnblockMemoryLib to explicitly request
allocated NVS region to be accessible from MM environment. It will bring
in compatibility with architectures that supports full memory blockage
inside MM.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Message-Id: <MWHPR06MB31026F3F8C3FAA39D74CE4BAF3969@MWHPR06MB3102.namprd06.prod.outlook.com>
Diffstat (limited to 'SecurityPkg/Tcg')
| -rw-r--r-- | SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.c | 6 | ||||
| -rw-r--r-- | SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.inf | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.c b/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.c index 924c3b4edd..e8844e474a 100644 --- a/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.c +++ b/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.c @@ -38,6 +38,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <Library/Tpm2DeviceLib.h>
#include <Library/Tpm2CommandLib.h>
#include <Library/UefiLib.h>
+#include <Library/MmUnblockMemoryLib.h>
//
// Physical Presence Interface Version supported by Platform
@@ -147,6 +148,11 @@ AssignOpRegion ( ZeroMem ((VOID *)(UINTN)MemoryAddress, Size);
OpRegion->RegionOffset = (UINT32) (UINTN) MemoryAddress;
OpRegion->RegionLen = (UINT8) Size;
+ // Request to unblock this region from MM core
+ Status = MmUnblockMemoryRequest (MemoryAddress, EFI_SIZE_TO_PAGES (Size));
+ if (Status != EFI_UNSUPPORTED && EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ }
break;
}
}
diff --git a/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.inf b/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.inf index 42ddb4bd1f..f1c6ae5b1c 100644 --- a/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.inf +++ b/SecurityPkg/Tcg/Tcg2Acpi/Tcg2Acpi.inf @@ -57,6 +57,7 @@ Tpm2CommandLib
Tcg2PhysicalPresenceLib
PcdLib
+ MmUnblockMemoryLib
[Guids]
gEfiTpmDeviceInstanceTpm20DtpmGuid ## PRODUCES ## GUID # TPM device identifier
|