diff options
| author | Yao, Jiewen <Jiewen.Yao@intel.com> | 2015-08-13 08:24:17 +0000 |
|---|---|---|
| committer | jyao1 <jyao1@Edk2> | 2015-08-13 08:24:17 +0000 |
| commit | 1abfa4ce4835639c66ae82cc0d72cffcf3f28b6b (patch) | |
| tree | 9688e07a23a004cf3cc14d5cbb119fc4f0cd5495 /SecurityPkg/Tcg/Tcg2Config/TpmDetection.c | |
| parent | 59b226d6d7e2b9e6ea8751abb366dd1a7d643a4c (diff) | |
| download | edk2-platforms-1abfa4ce4835639c66ae82cc0d72cffcf3f28b6b.tar.xz | |
Add TPM2 support defined in trusted computing group.
TCG EFI Protocol Specification for TPM Family 2.0 Revision 1.0 Version 9 at http://www.trustedcomputinggroup.org/resources/tcg_efi_protocol_specification
TCG Physical Presence Interface Specification Version 1.30, Revision 00.52 at http://www.trustedcomputinggroup.org/resources/tcg_physical_presence_interface_specification
Add Tcg2XXX, similar file/directory as TrEEXXX. Old TrEE driver/library can be deprecated.
1) Add Tcg2Pei/Dxe/Smm driver to log event and provide services.
2) Add Dxe/Pei/SmmTcg2PhysicalPresenceLib to support TCG PP.
3) Update Tpm2 library to use TCG2 protocol instead of TrEE protocol.
Test Win8/Win10 with SecureBoot enabled, PCR7 shows bound.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <Jiewen.Yao@intel.com>
Reviewed-by: "Zhang, Chao B" <chao.b.zhang@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18219 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'SecurityPkg/Tcg/Tcg2Config/TpmDetection.c')
| -rw-r--r-- | SecurityPkg/Tcg/Tcg2Config/TpmDetection.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/SecurityPkg/Tcg/Tcg2Config/TpmDetection.c b/SecurityPkg/Tcg/Tcg2Config/TpmDetection.c new file mode 100644 index 0000000000..9e93e9c2d9 --- /dev/null +++ b/SecurityPkg/Tcg/Tcg2Config/TpmDetection.c @@ -0,0 +1,129 @@ +/** @file
+ TPM1.2/dTPM2.0 auto detection.
+
+Copyright (c) 2015, 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
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+#include <PiPei.h>
+#include <Ppi/ReadOnlyVariable2.h>
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/PcdLib.h>
+#include <Library/Tpm12DeviceLib.h>
+#include <Library/Tpm12CommandLib.h>
+#include <IndustryStandard/Tpm12.h>
+
+#include "Tcg2ConfigNvData.h"
+
+/**
+ This routine return if dTPM (1.2 or 2.0) present.
+
+ @retval TRUE dTPM present
+ @retval FALSE dTPM not present
+**/
+BOOLEAN
+IsDtpmPresent (
+ VOID
+ )
+{
+ UINT8 RegRead;
+
+ RegRead = MmioRead8 ((UINTN)PcdGet64 (PcdTpmBaseAddress));
+ if (RegRead == 0xFF) {
+ DEBUG ((EFI_D_ERROR, "DetectTpmDevice: Dtpm not present\n"));
+ return FALSE;
+ } else {
+ DEBUG ((EFI_D_INFO, "DetectTpmDevice: Dtpm present\n"));
+ return TRUE;
+ }
+}
+
+/**
+ This routine check both SetupVariable and real TPM device, and return final TpmDevice configuration.
+
+ @param SetupTpmDevice TpmDevice configuration in setup driver
+
+ @return TpmDevice configuration
+**/
+UINT8
+DetectTpmDevice (
+ IN UINT8 SetupTpmDevice
+ )
+{
+ EFI_STATUS Status;
+ EFI_BOOT_MODE BootMode;
+ TCG2_DEVICE_DETECTION Tcg2DeviceDetection;
+ EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariablePpi;
+ UINTN Size;
+
+ Status = PeiServicesGetBootMode (&BootMode);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // In S3, we rely on normal boot Detection, because we save to ReadOnly Variable in normal boot.
+ //
+ if (BootMode == BOOT_ON_S3_RESUME) {
+ DEBUG ((EFI_D_INFO, "DetectTpmDevice: S3 mode\n"));
+
+ Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);
+ ASSERT_EFI_ERROR (Status);
+
+ Size = sizeof(TCG2_DEVICE_DETECTION);
+ ZeroMem (&Tcg2DeviceDetection, sizeof(Tcg2DeviceDetection));
+ Status = VariablePpi->GetVariable (
+ VariablePpi,
+ TCG2_DEVICE_DETECTION_NAME,
+ &gTcg2ConfigFormSetGuid,
+ NULL,
+ &Size,
+ &Tcg2DeviceDetection
+ );
+ if (!EFI_ERROR (Status) &&
+ (Tcg2DeviceDetection.TpmDeviceDetected >= TPM_DEVICE_MIN) &&
+ (Tcg2DeviceDetection.TpmDeviceDetected <= TPM_DEVICE_MAX)) {
+ DEBUG ((EFI_D_ERROR, "TpmDevice from DeviceDetection: %x\n", Tcg2DeviceDetection.TpmDeviceDetected));
+ return Tcg2DeviceDetection.TpmDeviceDetected;
+ }
+ }
+
+ DEBUG ((EFI_D_INFO, "DetectTpmDevice:\n"));
+ if (!IsDtpmPresent ()) {
+ // dTPM not available
+ return TPM_DEVICE_NULL;
+ }
+
+ // dTPM available and not disabled by setup
+ // We need check if it is TPM1.2 or TPM2.0
+ // So try TPM1.2 command at first
+
+ Status = Tpm12RequestUseTpm ();
+ if (EFI_ERROR (Status)) {
+ return TPM_DEVICE_2_0_DTPM;
+ }
+
+ if (BootMode == BOOT_ON_S3_RESUME) {
+ Status = Tpm12Startup (TPM_ST_STATE);
+ } else {
+ Status = Tpm12Startup (TPM_ST_CLEAR);
+ }
+ if (EFI_ERROR (Status)) {
+ return TPM_DEVICE_2_0_DTPM;
+ }
+
+ // NO initialization needed again.
+ PcdSet8 (PcdTpmInitializationPolicy, 0);
+ return TPM_DEVICE_1_2;
+}
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