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/** @file
Implement TPM1.2 Get Capabilities related commands.
Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#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), 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), Response.ResponseSize));
return Status;
}
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