1 files changed, 119 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibTcg2/Tpm2DeviceLibTcg2.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibTcg2/Tpm2DeviceLibTcg2.c
new file mode 100644
index 00000000..dc7ce816
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibTcg2/Tpm2DeviceLibTcg2.c
@@ -0,0 +1,119 @@
+/** @file
+  This library is TPM2 TCG2 protocol lib.
+
+Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/Tpm2DeviceLib.h>
+#include <Protocol/Tcg2Protocol.h>
+#include <IndustryStandard/Tpm20.h>
+
+EFI_TCG2_PROTOCOL  *mTcg2Protocol = NULL;
+
+/**
+  This service enables the sending of commands to the TPM2.
+
+  @param[in]      InputParameterBlockSize  Size of the TPM2 input parameter block.
+  @param[in]      InputParameterBlock      Pointer to the TPM2 input parameter block.
+  @param[in,out]  OutputParameterBlockSize Size of the TPM2 output parameter block.
+  @param[in]      OutputParameterBlock     Pointer to the TPM2 output parameter block.
+
+  @retval EFI_SUCCESS            The command byte stream was successfully sent to the device and a response was successfully received.
+  @retval EFI_DEVICE_ERROR       The command was not successfully sent to the device or a response was not successfully received from the device.
+  @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2SubmitCommand (
+  IN UINT32            InputParameterBlockSize,
+  IN UINT8             *InputParameterBlock,
+  IN OUT UINT32        *OutputParameterBlockSize,
+  IN UINT8             *OutputParameterBlock
+  )
+{
+  EFI_STATUS                Status;
+  TPM2_RESPONSE_HEADER      *Header;
+
+  if (mTcg2Protocol == NULL) {
+    Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &mTcg2Protocol);
+    if (EFI_ERROR (Status)) {
+      //
+      // Tcg2 protocol is not installed. So, TPM2 is not present.
+      //
+      DEBUG ((EFI_D_ERROR, "Tpm2SubmitCommand - Tcg2 - %r\n", Status));
+      return EFI_NOT_FOUND;
+    }
+  }
+  //
+  // Assume when Tcg2 Protocol is ready, RequestUseTpm already done.
+  //
+  Status = mTcg2Protocol->SubmitCommand (
+                            mTcg2Protocol,
+                            InputParameterBlockSize,
+                            InputParameterBlock,
+                            *OutputParameterBlockSize,
+                            OutputParameterBlock
+                            );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+  Header = (TPM2_RESPONSE_HEADER *)OutputParameterBlock;
+  *OutputParameterBlockSize = SwapBytes32 (Header->paramSize);
+
+  return EFI_SUCCESS;
+}
+
+/**
+  This service requests use TPM2.
+
+  @retval EFI_SUCCESS      Get the control of TPM2 chip.
+  @retval EFI_NOT_FOUND    TPM2 not found.
+  @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2RequestUseTpm (
+  VOID
+  )
+{
+  EFI_STATUS   Status;
+
+  if (mTcg2Protocol == NULL) {
+    Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &mTcg2Protocol);
+    if (EFI_ERROR (Status)) {
+      //
+      // Tcg2 protocol is not installed. So, TPM2 is not present.
+      //
+      DEBUG ((EFI_D_ERROR, "Tpm2RequestUseTpm - Tcg2 - %r\n", Status));
+      return EFI_NOT_FOUND;
+    }
+  }
+  //
+  // Assume when Tcg2 Protocol is ready, RequestUseTpm already done.
+  //
+  return EFI_SUCCESS;
+}
+
+/**
+  This service register TPM2 device.
+
+  @param Tpm2Device  TPM2 device
+
+  @retval EFI_SUCCESS          This TPM2 device is registered successfully.
+  @retval EFI_UNSUPPORTED      System does not support register this TPM2 device.
+  @retval EFI_ALREADY_STARTED  System already register this TPM2 device.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2RegisterTpm2DeviceLib (
+  IN TPM2_DEVICE_INTERFACE   *Tpm2Device
+  )
+{
+  return EFI_UNSUPPORTED;
+}