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|
/** @file
Implements Platform Trust Technology (FTPM) HCI Device Library.
@copyright
Copyright (c) 2012 - 2013 Intel Corporation. All rights reserved
This software and associated documentation (if any) is furnished
under a license and may only be used or copied in accordance
with the terms of the license. Except as permitted by such
license, no part of this software or documentation may be
reproduced, stored in a retrieval system, or transmitted in any
form or by any means without the express written consent of
Intel Corporation.
This file contains an 'Intel Peripheral Driver' and uniquely
identified as "Intel Reference Module" and is
licensed for Intel CPUs and chipsets under the terms of your
license agreement with Intel or your vendor. This file may
be modified by the user, subject to additional terms of the
license agreement
**/
#include <efi.h>
#include <AmiLib.h>
#include "Tpm2PttHciRegs.h"
#include "Tpm2PttHciDeviceLib.h"
#include <Tpm20Includes\Tpm20.h>
//#include <EfiCommonLib.h>
#ifndef ASSERT
#define ASSERT(Condition) if(!(Condition)) { \
EFI_DEADLOOP() \
}
#endif
#define MmioAddress(BaseAddr, Register) \
( (UINTN)BaseAddr + (UINTN)(Register) )
#define Mmio32Ptr(BaseAddr, Register) \
( (volatile UINT32 *)MmioAddress(BaseAddr, Register) )
#define Mmio32(BaseAddr, Register) \
*Mmio32Ptr(BaseAddr, Register)
#define MmioRead32(Addr) \
Mmio32(Addr, 0)
#define MmioWrite32(Addr, Value) \
(Mmio32(Addr, 0) = (UINT32)Value)
#define TPM_H2NS( x ) \
(((UINT16)(x) << 8) | ((UINT16)(x) >> 8))
#define TPM_H2NL( x ) \
(UINT32)((((UINT32)(x)) >> 24) \
| (((x) >> 8) & 0xff00) \
| ((x) << 24) \
| (((x) & 0xff00) << 8))
#define TPM_N2HS( x ) TPM_H2NS( x )
#define TPM_N2HL( x ) TPM_H2NL( x )
#pragma pack (push, 1)
typedef struct {
TPM_ST tag;
UINT32 paramSize;
TPM_RC responseCode;
} TPM2_RESPONSE_HEADER;
#pragma pack (pop)
#define EFI_MAX_ADDRESS 0xFFFFFFFFFFFFFFFF
#ifdef INT_EFI_DEBUG
/**
Prints command or response buffer for debugging purposes.
@param[in] Buffer Buffer to print.
@param[in] BufferSize Buffer data length.
**/
VOID
EFIAPI
PttHciPrintBuffer(IN UINT8 *Buffer, IN UINT32 BufferSize)
{
UINT32 Index;
DEBUG ((EFI_D_INFO, "Buffer Address: 0x%08x, Size: 0x%08x, Value:\n", Buffer, BufferSize));
for(Index = 0; Index < BufferSize; Index++){
DEBUG ((EFI_D_INFO, "%02x ", *(Buffer + Index)));
if((Index+1) % 16 == 0) DEBUG ((EFI_D_INFO, "\n"));
}
DEBUG ((EFI_D_INFO, "\n"));
}
#endif // EFI_DEBUG
VOID MicroSecDelay (
UINTN Delay
)
{
UINTN Counter, i;
UINT32 Data32, PrevData;
UINTN Remainder;
Counter = (UINTN)Div64 ((UINT64)(Delay * 10), 3, &Remainder);
if (Remainder != 0) {
Counter++;
}
//
// Call WaitForTick for Counter + 1 ticks to try to guarantee Counter tick
// periods, thus attempting to ensure Microseconds of stall time.
//
if (Counter != 0) {
PrevData = IoRead32(PM_BASE_ADDRESS + 8);
for (i = 0; i < Counter; ) {
Data32 = IoRead32(PM_BASE_ADDRESS + 8);
if (Data32 < PrevData) { // Reset if there is a overlap
PrevData=Data32;
continue;
}
i += (Data32 - PrevData);
PrevData = Data32;
}
}
return;
}
/**
Copy data from the MMIO region to system memory by using 32-bit access.
Copy data from the MMIO region specified by starting address StartAddress
to system memory specified by Buffer by using 32-bit access. The total
number of byte to be copied is specified by Length. Buffer is returned.
If StartAddress is not aligned on a 32-bit boundary, then ASSERT().
If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If Length is not aligned on a 32-bit boundary, then ASSERT().
If Buffer is not aligned on a 32-bit boundary, then ASSERT().
@param StartAddress The starting address for the MMIO region to be copied from.
@param Length The size, in bytes, of Buffer.
@param Buffer The pointer to a system memory buffer receiving the data read.
@return Buffer
**/
UINT32 *
EFIAPI
MmioReadBuffer32 (
IN UINTN StartAddress,
IN UINTN Length,
OUT UINT32 *Buffer
)
{
UINT32 *ReturnBuffer;
ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);
ASSERT ((Length - 1) <= (EFI_MAX_ADDRESS - StartAddress));
ASSERT ((Length - 1) <= (EFI_MAX_ADDRESS - (UINTN) Buffer));
ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);
ASSERT (((UINTN) Buffer & (sizeof (UINT32) - 1)) == 0);
ReturnBuffer = Buffer;
while (Length != 0) {
*(Buffer++) = MmioRead32 (StartAddress);
StartAddress += sizeof (UINT32);
Length -= sizeof (UINT32);
}
return ReturnBuffer;
}
/**
Copy data from system memory to the MMIO region by using 32-bit access.
Copy data from system memory specified by Buffer to the MMIO region specified
by starting address StartAddress by using 32-bit access. The total number
of byte to be copied is specified by Length. Buffer is returned.
If StartAddress is not aligned on a 32-bit boundary, then ASSERT().
If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().
If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().
If Length is not aligned on a 32-bit boundary, then ASSERT().
If Buffer is not aligned on a 32-bit boundary, then ASSERT().
@param StartAddress The starting address for the MMIO region to be copied to.
@param Length The size, in bytes, of Buffer.
@param Buffer The pointer to a system memory buffer containing the data to write.
@return Buffer
**/
UINT32 *
EFIAPI
MmioWriteBuffer32 (
IN UINTN StartAddress,
IN UINTN Length,
IN CONST UINT32 *Buffer
)
{
UINT32 *ReturnBuffer;
ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);
ASSERT ((Length - 1) <= (EFI_MAX_ADDRESS - StartAddress));
ASSERT ((Length - 1) <= (EFI_MAX_ADDRESS - (UINTN) Buffer));
ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);
ASSERT (((UINTN) Buffer & (sizeof (UINT32) - 1)) == 0);
ReturnBuffer = (UINT32 *) Buffer;
while (Length != 0) {
MmioWrite32 (StartAddress, *(Buffer++));
StartAddress += sizeof (UINT32);
Length -= sizeof (UINT32);
}
return ReturnBuffer;
}
/**
Checks whether FTPM is enabled (FTPM_STS::FTPM_EN).
@retval TRUE FTPM is enabled.
@retval FALSE FTPM is disabled. All LT writes will be dropped.
All LT reads will be returned with read data value of all 0’s.
The bit can only be written once per ME power cycle.
**/
BOOLEAN
EFIAPI
PttHciPresenceCheck (
VOID
)
{
EFI_STATUS Status;
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: PttHciPresenceCheck start\n"));
DEBUG ((EFI_D_INFO, "Check FTPM_STS - ENABLED bit (@ 0x%08x)\n", (R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_STS)));
#endif
Status = PttHciWaitRegisterBits(
(EFI_PHYSICAL_ADDRESS)(UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_STS),
B_PTT_HCI_STS_ENABLED,
V_PTT_HCI_IGNORE_BITS,
PTT_HCI_TIMEOUT_A
);
if(Status == EFI_SUCCESS){
return TRUE;
}
return FALSE;
}
/**
Checks whether PTT is Ready
@retval TRUE PTT is ready.
@retval FALSE PTT is not ready
**/
BOOLEAN
EFIAPI
PttHciReadyCheck (
VOID
)
{
UINT32 RegRead;
RegRead = MmioRead32 ((UINTN) ( R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_STS ));
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "Check PTT_STS - READY bit (@ 0x%08x)\n", RegRead));
#endif
if(( B_PTT_HCI_STS_READY & RegRead) != 0){
return TRUE;
}
return FALSE;
}
/**
Checks whether TPM2_Startup command has been executed (FTPM_STS::STARTUP_EXEC).
If command was executed, it should not be redundantly issued again.
@retval TRUE Startup command executed already.
@retval FALSE Startup command not executed yet.
**/
BOOLEAN
EFIAPI
PttHciStartupExecuted (
VOID
)
{
EFI_STATUS Status;
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: PttHciStartupExecuted start\n"));
DEBUG ((EFI_D_INFO, "Check FTPM_STS - STARTUP_EXECECUTED bit (@ 0x%08x)\n", (R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_STS)));
#endif
Status = PttHciWaitRegisterBits(
(EFI_PHYSICAL_ADDRESS)(UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_STS),
B_PTT_HCI_STS_STARTUP_EXEC,
V_PTT_HCI_IGNORE_BITS,
PTT_HCI_TIMEOUT_A
);
if(Status == EFI_SUCCESS){
return TRUE;
}
return FALSE;
}
/**
Sets FTPM_CMD and CA_START register to a defined value to indicate that a command is
available for processing.
Any host write to this register shall result in an interrupt to the ME firmware.
@retval EFI_SUCCESS Register successfully written.
@retval TBD
**/
EFI_STATUS
EFIAPI
PttHciRequestCommandExec (
VOID
)
{
EFI_STATUS Status = EFI_SUCCESS;
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: PttHciRequestCommandExec start\n"));
DEBUG ((EFI_D_INFO, "Command ready for processing - write 0x%08x to FTPM_CA_START register (@ 0x%08x)\n",
V_PTT_HCI_COMMAND_AVAILABLE_START,
(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_START)));
#endif
MmioWrite32((UINTN)R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_START, V_PTT_HCI_COMMAND_AVAILABLE_START);
///
/// Write 0x1 to HCI CMD register to indicate that a command is available for processing
///
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "Command ready for processing - write 0x%08x to FTPM_CMD register (@ 0x%08x)\n",
V_PTT_HCI_COMMAND_AVAILABLE_CMD,
(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CMD)));
#endif
MmioWrite32((UINTN)R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CMD, V_PTT_HCI_COMMAND_AVAILABLE_CMD);
return Status;
}
/**
Checks whether the value of a FTPM register satisfies the input BIT setting.
@param[in] Register Address port of register to be checked.
@param[in] BitSet Check these data bits are set.
@param[in] BitClear Check these data bits are clear.
@param[in] TimeOut The max wait time (unit MicroSecond) when checking register.
@retval EFI_SUCCESS The register satisfies the check bit.
@retval EFI_TIMEOUT The register can't run into the expected status in time.
**/
EFI_STATUS
EFIAPI
PttHciWaitRegisterBits(
IN EFI_PHYSICAL_ADDRESS RegAddress,
IN UINT32 BitSet,
IN UINT32 BitClear,
IN UINT32 TimeOut
)
{
UINT32 RegRead;
UINT32 WaitTime;
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: PttHciWaitRegisterBits start\n"));
#endif
for (WaitTime = 0; WaitTime < TimeOut; WaitTime += PTT_HCI_POLLING_PERIOD){
RegRead = MmioRead32 ((UINTN)RegAddress);
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "RegRead: 0x%08x, BitSetMask: 0x%08x, BitClearMask: 0x%08x, WaitTime: %d (microsec)\n", RegRead, BitSet, BitClear, WaitTime));
#endif
if (RegRead == 0xFFFFFFFF)
continue;
if ((RegRead & BitSet) == BitSet && (RegRead & BitClear) == 0) {
return EFI_SUCCESS;
}
// MicroSecondDelay (PTT_HCI_POLLING_PERIOD); Override
MicroSecDelay(PTT_HCI_POLLING_PERIOD);
}
return EFI_TIMEOUT;
}
/**
Sends command to FTPM for execution.
@param[in] FtpmBuffer Buffer for TPM command data.
@param[in] DataLength TPM command data length.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_TIMEOUT The register can't run into the expected status in time.
**/
EFI_STATUS
EFIAPI
PttHciSend(
IN UINT8 *FtpmBuffer,
IN UINT32 DataLength
)
{
EFI_STATUS Status;
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: PttHciSend start\n"));
#endif
Status = PttHciWaitRegisterBits(
(EFI_PHYSICAL_ADDRESS)(UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_START),
V_PTT_HCI_IGNORE_BITS,
V_PTT_HCI_START_CLEAR,
PTT_HCI_TIMEOUT_A
);
if(EFI_ERROR (Status)){
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "FTPM_CA_START register not clear - TPM2 command cannot be sent! EFI_ERROR = %r\n", Status));
#endif
return EFI_NOT_READY;
}
///
/// Align command size to dword before writing to FTPM_CRB
///
if(DataLength % 4 != 0){
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "Alignment: DataLength change from %d ", DataLength));
#endif
DataLength += (4 - (DataLength % 4));
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "to %d\n", DataLength));
#endif
}
MmioWriteBuffer32((UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CRB), (UINTN)DataLength, (UINT32*)FtpmBuffer);
///
/// FTPM_CA_CMD - the physical address to which the TPM 2.0 driver will write the command to execute
///
MmioWrite32((UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_CMD), R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CRB);
MmioWrite32((UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_CMD_SZ), S_PTT_HCI_CRB_LENGTH);
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "FTPM_CA_CMD (@ 0x%08x) written, value = 0x%08x\n",
(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_CMD),
R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CRB));
DEBUG ((EFI_D_INFO, "FTPM_CA_CMD_SZ (@ 0x%08x) written, value = 0x%08x\n",
(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_CMD_SZ), DataLength));
#endif
///
/// Set FTPM_CMD and FTPM_CA_START registers to indicate TPM command ready for execution
///
Status = PttHciRequestCommandExec();
#ifdef INT_EFI_DEBUG
if(Status == EFI_SUCCESS){
DEBUG ((EFI_D_INFO, "FTPM_CMD register written - TPM2 command available for processing\n"));
}
#endif
return Status;
}
/**
Receives response data of last command from FTPM.
@param[out] FtpmBuffer Buffer for response data.
@param[out] RespSize Response data length.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_TIMEOUT The register can't run into the expected status in time.
@retval EFI_DEVICE_ERROR Unexpected device status.
@retval EFI_BUFFER_TOO_SMALL Response data is too long.
**/
EFI_STATUS
EFIAPI
PttHciReceive(
OUT UINT8 *FtpmBuffer,
OUT UINT32 *RespSize
)
{
EFI_STATUS Status;
UINT16 Data16;
UINT32 Data32;
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: PttHciReceive start\n"));
#endif
///
/// Wait for the command completion - poll FTPM_CA_START clear
///
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: Check Start status (FTPM_CA_START)\n"));
#endif
Status = PttHciWaitRegisterBits(
(EFI_PHYSICAL_ADDRESS)(UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_START),
V_PTT_HCI_IGNORE_BITS,
V_PTT_HCI_START_CLEAR,
PTT_HCI_TIMEOUT_D
);
if(EFI_ERROR (Status)){
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "FTPM_CA_START register not clear - TPM2 response cannot be read! EFI_ERROR = %r\n", Status));
#endif
goto Exit;
}
///
/// Check for error condition - FTPM_CA_ERROR
///
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: Check Error status (FTPM_CA_ERROR)\n"));
#endif
Status = PttHciWaitRegisterBits(
(EFI_PHYSICAL_ADDRESS)(UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_ERROR),
V_PTT_HCI_IGNORE_BITS,
V_PTT_HCI_ALL_BITS_CLEAR,
PTT_HCI_TIMEOUT_A
);
if(EFI_ERROR (Status)){
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "FTPM_CA_ERROR register set - TPM2 response cannot be provided! EFI_ERROR = %r\n", Status));
#endif
Status = EFI_DEVICE_ERROR;
goto Exit;
}
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "FTPM_CA_START register clear - TPM2 command processing completed - ready to read\n"));
#endif
///
/// Read the response data header
///
MmioReadBuffer32((UINTN)R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CRB, PTT_HCI_RESPONSE_HEADER_SIZE, (UINT32*)FtpmBuffer);
///
/// Check the reponse data header (tag, parasize and returncode)
///
MemCpy (&Data16, FtpmBuffer, sizeof (UINT16));
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "TPM2_RESPONSE_HEADER.tag = 0x%04x\n", TPM_H2NS(Data16)));
#endif
///
/// TPM Rev 2.0 Part 2 - 6.9 TPM_ST (Structure Tags)
/// TPM_ST_RSP_COMMAND - Used in a response that has an error in the tag.
///
if (TPM_H2NS(Data16) == TPM_ST_RSP_COMMAND) {
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "TPM2_RESPONSE_HEADER.tag = TPM_ST_RSP_COMMAND - Error in response!\n"));
#endif
Status = EFI_DEVICE_ERROR;
goto Exit;
}
MemCpy(&Data32, (FtpmBuffer + 2), sizeof(UINT32));
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "TPM2_RESPONSE_HEADER.paramSize = 0x%08x\n", TPM_H2NL(Data32)));
#endif
*RespSize = TPM_H2NL(Data32);
if(*RespSize == sizeof(TPM2_RESPONSE_HEADER)) {
Status = EFI_SUCCESS;
goto Exit;
}
if(*RespSize < sizeof(TPM2_RESPONSE_HEADER)) {
Status = EFI_DEVICE_ERROR;
goto Exit;
}
if(*RespSize > S_PTT_HCI_CRB_LENGTH) {
Status = EFI_BUFFER_TOO_SMALL;
goto Exit;
}
///
/// Align command size to dword before writing to FTPM_CRB
///
if(*RespSize % 4 != 0){
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "Alignment: RespSize change from %d ", *RespSize));
#endif
*RespSize += (4 - (*RespSize % 4));
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "to %d\n", *RespSize));
#endif
}
///
/// Reading the entire response data
///
MmioReadBuffer32((UINTN)R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CRB, *RespSize, (UINT32*)FtpmBuffer);
Exit:
if(!EFI_ERROR(Status)){
///
/// FTPM_CA_CMD - the physical address from which the TPM 2.0 driver will read command responses
///
MmioWrite32((UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_RSP), R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CRB);
MmioWrite32((UINTN)(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_RSP_SZ),S_PTT_HCI_CRB_LENGTH);
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "FTPM_CA_RSP (@ 0x%08x) written, value = 0x%08x\n",
(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_RSP),
(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CRB)));
DEBUG ((EFI_D_INFO, "FTPM_CA_RSP_SZ (@ 0x%08x) written, value = 0x%08x\n",
(R_PTT_HCI_BASE_ADDRESS + R_PTT_HCI_CA_RSP_SZ), *RespSize));
#endif
}
return Status;
}
/**
Sends formatted command to FTPM for execution and returns formatted response data.
@param[in] InputBuffer Buffer for the input data.
@param[in] InputBufferSize Size of the input buffer.
@param[out] ReturnBuffer Buffer for the output data.
@param[out] ReturnBufferSize Size of the output buffer.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_TIMEOUT The register can't run into the expected status in time.
**/
EFI_STATUS
EFIAPI
PttHciSubmitCommand(
IN UINT8 *InputBuffer,
IN UINT32 InputBufferSize,
OUT UINT8 *ReturnBuffer,
OUT UINT32 *ReturnBufferSize
)
{
EFI_STATUS Status;
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: PttHciSubmitCommand start\n"));
#endif
if(!PttHciReadyCheck()){
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "PTT device not ready. \n"));
#endif
return EFI_NOT_READY;
}
if(InputBuffer == NULL || ReturnBuffer == NULL || InputBufferSize == 0){
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "Buffer == NULL or InputBufferSize == 0\n"));
#endif
return EFI_INVALID_PARAMETER;
}
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: Command Buffer dump\n"));
#endif
///
/// Send the command to TPM
///
Status = PttHciSend(InputBuffer, InputBufferSize);
if (EFI_ERROR (Status)) {
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "FTpmHciSend EFI_ERROR = %r\n", Status));
#endif
return Status;
}
///
/// Receive the response data from TPM
///
Status = PttHciReceive(ReturnBuffer, ReturnBufferSize);
if (EFI_ERROR (Status)) {
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_ERROR, "FTpmHciReceive EFI_ERROR = %r\n", Status));
#endif
return Status;
}
#ifdef INT_EFI_DEBUG
DEBUG ((EFI_D_INFO, "PTT: Response Buffer dump\n"));
#endif
return Status;
}
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