diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12GetCapability.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12GetCapability.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12GetCapability.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12GetCapability.c new file mode 100644 index 00000000..69203654 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12GetCapability.c @@ -0,0 +1,131 @@ +/** @file + Implement TPM1.2 Get Capabilities related commands. + +Copyright (c) 2016 - 2018, 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/BaseMemoryLib.h> +#include <Library/Tpm12DeviceLib.h> + +#pragma pack(1) + +typedef struct { + TPM_RQU_COMMAND_HDR Hdr; + UINT32 Capability; + UINT32 CapabilityFlagSize; + UINT32 CapabilityFlag; +} TPM_CMD_GET_CAPABILITY; + +typedef struct { + TPM_RSP_COMMAND_HDR Hdr; + UINT32 ResponseSize; + TPM_PERMANENT_FLAGS Flags; +} TPM_RSP_GET_CAPABILITY_PERMANENT_FLAGS; + +typedef struct { + TPM_RSP_COMMAND_HDR Hdr; + UINT32 ResponseSize; + TPM_STCLEAR_FLAGS Flags; +} TPM_RSP_GET_CAPABILITY_STCLEAR_FLAGS; + +#pragma pack() + +/** +Get TPM capability permanent flags. + +@param[out] TpmPermanentFlags Pointer to the buffer for returned flag structure. + +@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 +Tpm12GetCapabilityFlagPermanent ( + OUT TPM_PERMANENT_FLAGS *TpmPermanentFlags + ) +{ + EFI_STATUS Status; + TPM_CMD_GET_CAPABILITY Command; + TPM_RSP_GET_CAPABILITY_PERMANENT_FLAGS Response; + UINT32 Length; + + // + // send Tpm command TPM_ORD_GetCapability + // + Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND); + Command.Hdr.paramSize = SwapBytes32 (sizeof (Command)); + Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_GetCapability); + Command.Capability = SwapBytes32 (TPM_CAP_FLAG); + Command.CapabilityFlagSize = SwapBytes32 (sizeof (TPM_CAP_FLAG_PERMANENT)); + Command.CapabilityFlag = SwapBytes32 (TPM_CAP_FLAG_PERMANENT); + Length = sizeof (Response); + Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response); + if (EFI_ERROR (Status)) { + return Status; + } + + if (SwapBytes32 (Response.Hdr.returnCode) != TPM_SUCCESS) { + DEBUG ((DEBUG_ERROR, "Tpm12GetCapabilityFlagPermanent: Response Code error! 0x%08x\r\n", SwapBytes32 (Response.Hdr.returnCode))); + return EFI_DEVICE_ERROR; + } + + ZeroMem (TpmPermanentFlags, sizeof (*TpmPermanentFlags)); + CopyMem (TpmPermanentFlags, &Response.Flags, MIN (sizeof (*TpmPermanentFlags), SwapBytes32(Response.ResponseSize))); + + return Status; +} + +/** +Get TPM capability volatile flags. + +@param[out] VolatileFlags Pointer to the buffer for returned flag structure. + +@retval EFI_SUCCESS Operation completed successfully. +@retval EFI_DEVICE_ERROR The command was unsuccessful. + +**/ +EFI_STATUS +EFIAPI +Tpm12GetCapabilityFlagVolatile ( + OUT TPM_STCLEAR_FLAGS *VolatileFlags + ) +{ + EFI_STATUS Status; + TPM_CMD_GET_CAPABILITY Command; + TPM_RSP_GET_CAPABILITY_STCLEAR_FLAGS Response; + UINT32 Length; + + // + // send Tpm command TPM_ORD_GetCapability + // + Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND); + Command.Hdr.paramSize = SwapBytes32 (sizeof (Command)); + Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_GetCapability); + Command.Capability = SwapBytes32 (TPM_CAP_FLAG); + Command.CapabilityFlagSize = SwapBytes32 (sizeof (TPM_CAP_FLAG_VOLATILE)); + Command.CapabilityFlag = SwapBytes32 (TPM_CAP_FLAG_VOLATILE); + Length = sizeof (Response); + Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response); + if (EFI_ERROR (Status)) { + return Status; + } + + if (SwapBytes32 (Response.Hdr.returnCode) != TPM_SUCCESS) { + DEBUG ((DEBUG_ERROR, "Tpm12GetCapabilityFlagVolatile: Response Code error! 0x%08x\r\n", SwapBytes32 (Response.Hdr.returnCode))); + return EFI_DEVICE_ERROR; + } + + ZeroMem (VolatileFlags, sizeof (*VolatileFlags)); + CopyMem (VolatileFlags, &Response.Flags, MIN (sizeof (*VolatileFlags), SwapBytes32(Response.ResponseSize))); + + return Status; +} |