1 files changed, 102 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12DeviceLibTcg/Tpm12DeviceLibTcg.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12DeviceLibTcg/Tpm12DeviceLibTcg.c
new file mode 100644
index 00000000..cecd7234
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12DeviceLibTcg/Tpm12DeviceLibTcg.c
@@ -0,0 +1,102 @@
+/** @file
+  This library is TPM12 TCG protocol lib.
+
+Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/Tpm12DeviceLib.h>
+#include <Protocol/TcgService.h>
+#include <IndustryStandard/Tpm12.h>
+
+EFI_TCG_PROTOCOL  *mTcgProtocol = NULL;
+
+/**
+  This service enables the sending of commands to the TPM12.
+
+  @param[in]      InputParameterBlockSize  Size of the TPM12 input parameter block.
+  @param[in]      InputParameterBlock      Pointer to the TPM12 input parameter block.
+  @param[in,out]  OutputParameterBlockSize Size of the TPM12 output parameter block.
+  @param[in]      OutputParameterBlock     Pointer to the TPM12 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
+Tpm12SubmitCommand (
+  IN UINT32            InputParameterBlockSize,
+  IN UINT8             *InputParameterBlock,
+  IN OUT UINT32        *OutputParameterBlockSize,
+  IN UINT8             *OutputParameterBlock
+  )
+{
+  EFI_STATUS                Status;
+  TPM_RSP_COMMAND_HDR       *Header;
+
+  if (mTcgProtocol == NULL) {
+    Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **) &mTcgProtocol);
+    if (EFI_ERROR (Status)) {
+      //
+      // TCG protocol is not installed. So, TPM12 is not present.
+      //
+      DEBUG ((EFI_D_ERROR, "Tpm12SubmitCommand - TCG - %r\n", Status));
+      return EFI_NOT_FOUND;
+    }
+  }
+  //
+  // Assume when TCG Protocol is ready, RequestUseTpm already done.
+  //
+  Status = mTcgProtocol->PassThroughToTpm (
+                           mTcgProtocol,
+                           InputParameterBlockSize,
+                           InputParameterBlock,
+                           *OutputParameterBlockSize,
+                           OutputParameterBlock
+                           );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+  Header = (TPM_RSP_COMMAND_HDR *)OutputParameterBlock;
+  *OutputParameterBlockSize = SwapBytes32 (Header->paramSize);
+
+  return EFI_SUCCESS;
+}
+
+/**
+  This service requests use TPM12.
+
+  @retval EFI_SUCCESS      Get the control of TPM12 chip.
+  @retval EFI_NOT_FOUND    TPM12 not found.
+  @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm12RequestUseTpm (
+  VOID
+  )
+{
+  EFI_STATUS   Status;
+
+  if (mTcgProtocol == NULL) {
+    Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **) &mTcgProtocol);
+    if (EFI_ERROR (Status)) {
+      //
+      // TCG protocol is not installed. So, TPM12 is not present.
+      //
+      DEBUG ((EFI_D_ERROR, "Tpm12RequestUseTpm - TCG - %r\n", Status));
+      return EFI_NOT_FOUND;
+    }
+  }
+  //
+  // Assume when TCG Protocol is ready, RequestUseTpm already done.
+  //
+  return EFI_SUCCESS;
+}