mirror of https://github.com/acidanthera/audk.git
138 lines
4.6 KiB
C
138 lines
4.6 KiB
C
/** @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;
|
|
}
|