diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibRouter/Tpm2DeviceLibRouterDxe.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibRouter/Tpm2DeviceLibRouterDxe.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibRouter/Tpm2DeviceLibRouterDxe.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibRouter/Tpm2DeviceLibRouterDxe.c new file mode 100644 index 00000000..4af3a6bc --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm2DeviceLibRouter/Tpm2DeviceLibRouterDxe.c @@ -0,0 +1,92 @@ +/** @file + This library is TPM2 device router. Platform can register multi TPM2 instance to it + via PcdTpmInstanceGuid. Platform need make choice that which one will be final one. + At most one TPM2 instance can be finally registered, and other will return unsupported. + +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/PcdLib.h> +#include <Library/Tpm2DeviceLib.h> + +TPM2_DEVICE_INTERFACE mInternalTpm2DeviceInterface; + +/** + 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 + ) +{ + if (mInternalTpm2DeviceInterface.Tpm2SubmitCommand == NULL) { + return EFI_UNSUPPORTED; + } + return mInternalTpm2DeviceInterface.Tpm2SubmitCommand ( + InputParameterBlockSize, + InputParameterBlock, + OutputParameterBlockSize, + 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 +Tpm2RequestUseTpm ( + VOID + ) +{ + if (mInternalTpm2DeviceInterface.Tpm2RequestUseTpm == NULL) { + return EFI_UNSUPPORTED; + } + return mInternalTpm2DeviceInterface.Tpm2RequestUseTpm (); +} + +/** + 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 + ) +{ + if (!CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &Tpm2Device->ProviderGuid)){ + DEBUG ((DEBUG_WARN, "WARNING: Tpm2RegisterTpm2DeviceLib - does not support %g registration\n", &Tpm2Device->ProviderGuid)); + return EFI_UNSUPPORTED; + } + + CopyMem (&mInternalTpm2DeviceInterface, Tpm2Device, sizeof(mInternalTpm2DeviceInterface)); + return EFI_SUCCESS; +} |