mirror of https://github.com/wolfSSL/wolfTPM.git
87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
/* tpm_io_infineon.c
|
|
*
|
|
* Copyright (C) 2006-2022 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfTPM.
|
|
*
|
|
* wolfTPM is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfTPM is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
/* This example shows IO interfaces for Infineon TriCore hardware:
|
|
* - TC2XX/TC3XX using macro: `WOLFTPM_INFINEON_TRICORE`.
|
|
*/
|
|
|
|
|
|
#include <wolftpm/tpm2.h>
|
|
#include <wolftpm/tpm2_tis.h>
|
|
#include "tpm_io.h"
|
|
|
|
/******************************************************************************/
|
|
/* --- BEGIN IO Callback Logic -- */
|
|
/******************************************************************************/
|
|
|
|
/* Included via tpm_io.c if WOLFTPM_INCLUDE_IO_FILE is defined */
|
|
#ifdef WOLFTPM_INCLUDE_IO_FILE
|
|
|
|
#if ! (defined(WOLFTPM_LINUX_DEV) || \
|
|
defined(WOLFTPM_SWTPM) || \
|
|
defined(WOLFTPM_WINAPI) )
|
|
|
|
/* Use the max speed by default - see tpm2_types.h for chip specific max values */
|
|
#ifndef TPM2_SPI_HZ
|
|
#define TPM2_SPI_HZ TPM2_SPI_MAX_HZ
|
|
#endif
|
|
|
|
#if defined(WOLFTPM_INFINEON_TRICORE)
|
|
|
|
#include <Ifx_Types.h>
|
|
#include <Qspi/SpiMaster/IfxQspi_SpiMaster.h>
|
|
|
|
/* externally declared SPI master channel */
|
|
extern IfxQspi_SpiMaster_Channel spiMasterChannel
|
|
|
|
static int TPM2_IoCb_Infineon_TriCore_SPI(TPM2_CTX* ctx, const byte* txBuf,
|
|
byte* rxBuf, word16 xferSz, void* userCtx)
|
|
{
|
|
int ret = TPM_RC_FAILURE;
|
|
|
|
#ifdef WOLFTPM_CHECK_WAIT_STATE
|
|
#error SPI check wait state logic not supported
|
|
#endif
|
|
|
|
/* wait for SPI not busy */
|
|
while (IfxQspi_SpiMaster_getStatus(&spiMasterChannel) ==
|
|
SpiIf_Status_busy) {};
|
|
|
|
/* synchronously send data */
|
|
if (IfxQspi_SpiMaster_exchange(&spiMasterChannel, txBuf, rxBuf,
|
|
xferSz) == SpiIf_Status_ok) {
|
|
ret = TPM_RC_SUCCESS;
|
|
}
|
|
|
|
(void)userCtx;
|
|
(void)ctx;
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* WOLFTPM_INFINEON_TRICORE */
|
|
#endif /* !(WOLFTPM_LINUX_DEV || WOLFTPM_SWTPM || WOLFTPM_WINAPI) */
|
|
#endif /* WOLFTPM_INCLUDE_IO_FILE */
|
|
|
|
/******************************************************************************/
|
|
/* --- END IO Callback Logic -- */
|
|
/******************************************************************************/
|