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- /** @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;
- }
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