diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c new file mode 100644 index 00000000..25942dea --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c @@ -0,0 +1,66 @@ +/** @file + Implement TPM1.2 Physical Presence related command. + +Copyright (c) 2016, Intel Corporation. All rights reserved. <BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include <PiPei.h> +#include <Library/Tpm12CommandLib.h> +#include <Library/BaseLib.h> +#include <Library/DebugLib.h> +#include <Library/Tpm12DeviceLib.h> + +#pragma pack(1) + +typedef struct { + TPM_RQU_COMMAND_HDR Hdr; + TPM_PHYSICAL_PRESENCE PhysicalPresence; +} TPM_CMD_PHYSICAL_PRESENCE; + +#pragma pack() + +/** +Send TSC_PhysicalPresence command to TPM. + +@param[in] PhysicalPresence The state to set the TPMs Physical Presence flags. + +@retval EFI_SUCCESS Operation completed successfully. +@retval EFI_TIMEOUT The register can't run into the expected status in time. +@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small. +@retval EFI_DEVICE_ERROR Unexpected device behavior. + +**/ +EFI_STATUS +EFIAPI +Tpm12PhysicalPresence ( + IN TPM_PHYSICAL_PRESENCE PhysicalPresence + ) +{ + EFI_STATUS Status; + TPM_CMD_PHYSICAL_PRESENCE Command; + TPM_RSP_COMMAND_HDR Response; + UINT32 Length; + + // + // send Tpm command TSC_ORD_PhysicalPresence + // + Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND); + Command.Hdr.paramSize = SwapBytes32 (sizeof (Command)); + Command.Hdr.ordinal = SwapBytes32 (TSC_ORD_PhysicalPresence); + Command.PhysicalPresence = SwapBytes16 (PhysicalPresence); + Length = sizeof (Response); + + Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response); + if (EFI_ERROR (Status)) { + return Status; + } + + if (SwapBytes32(Response.returnCode) != TPM_SUCCESS) { + DEBUG ((EFI_D_ERROR, "Tpm12PhysicalPresence: Response Code error! 0x%08x\r\n", SwapBytes32(Response.returnCode))); + return EFI_DEVICE_ERROR; + } + + return EFI_SUCCESS; +} |