diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c new file mode 100644 index 00000000..028f823f --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c @@ -0,0 +1,96 @@ +/** @file + This library is TPM2 DTPM instance. + It can be registered to Tpm2 Device router, to be active TPM2 engine, + based on platform setting. + +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/Tpm2DeviceLib.h> +#include <Library/PcdLib.h> + +#include <Guid/TpmInstance.h> + +#include "Tpm2DeviceLibDTpm.h" + +/** + Dump PTP register information. + + @param[in] Register Pointer to PTP register. +**/ +VOID +DumpPtpInfo ( + IN VOID *Register + ); + +/** + 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 +DTpm2SubmitCommand ( + IN UINT32 InputParameterBlockSize, + IN UINT8 *InputParameterBlock, + IN OUT UINT32 *OutputParameterBlockSize, + IN UINT8 *OutputParameterBlock + ); + +/** + 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 +DTpm2RequestUseTpm ( + VOID + ); + +TPM2_DEVICE_INTERFACE mDTpm2InternalTpm2Device = { + TPM_DEVICE_INTERFACE_TPM20_DTPM, + DTpm2SubmitCommand, + DTpm2RequestUseTpm, +}; + +/** + The function register DTPM2.0 instance and caches current active TPM interface type. + + @retval EFI_SUCCESS DTPM2.0 instance is registered, or system does not support register DTPM2.0 instance +**/ +EFI_STATUS +EFIAPI +Tpm2InstanceLibDTpmConstructor ( + VOID + ) +{ + EFI_STATUS Status; + + Status = Tpm2RegisterTpm2DeviceLib (&mDTpm2InternalTpm2Device); + if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) { + // + // Unsupported means platform policy does not need this instance enabled. + // + if (Status == EFI_SUCCESS) { + Status = InternalTpm2DeviceLibDTpmCommonConstructor (); + DumpPtpInfo ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress)); + } + return EFI_SUCCESS; + } + return Status; +} |