mirror of https://github.com/wolfSSL/wolfTPM.git
83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/* tpm_io_uboot.c
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*
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* Copyright (C) 2006-2025 wolfSSL Inc.
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*
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* This file is part of wolfTPM.
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*
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* wolfTPM is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfTPM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/* This example shows IO interfaces for U-boot */
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#include <wolftpm/tpm2.h>
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#include <wolftpm/tpm2_tis.h>
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#include "tpm_io.h"
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/******************************************************************************/
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/* --- BEGIN IO Callback Logic -- */
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/******************************************************************************/
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/* Included via tpm_io.c if WOLFTPM_INCLUDE_IO_FILE is defined */
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#ifdef WOLFTPM_INCLUDE_IO_FILE
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#if ! (defined(WOLFTPM_LINUX_DEV) || \
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defined(WOLFTPM_SWTPM) || \
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defined(WOLFTPM_WINAPI) )
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/* Use the max speed by default - see tpm2_types.h for chip specific max values */
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#ifndef TPM2_SPI_HZ
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#define TPM2_SPI_HZ TPM2_SPI_MAX_HZ
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#endif
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#if defined(__UBOOT__)
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#include <config.h>
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int TPM2_IoCb_Uboot_SPI(TPM2_CTX* ctx, const byte* txBuf,
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byte* rxBuf, word16 xferSz, void* userCtx)
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{
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int ret = 0;
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struct udevice *dev;
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/* Get the TPM device */
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if (ret == 0) {
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ret = tcg2_platform_get_tpm2(&dev);
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if ( ret != 0 || dev == NULL) {
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#ifdef DEBUG_WOLFTPM
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printf("Failed to get TPM device with error: %d\n", ret);
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#endif
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return TPM_RC_FAILURE;
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}
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}
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/* Transfer the device data using tpm_xfer */
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if (ret == 0) {
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ret = tpm_xfer(dev, txBuf, xferSz, rxBuf, &xferSz);
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if (ret != 0) {
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#ifdef DEBUG_WOLFTPM
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printf("tpm_xfer failed with error: %d\n", ret);
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#endif
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return TPM_RC_FAILURE;
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}
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}
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return TPM_RC_SUCCESS;
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}
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#endif /* __UBOOT__ */
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#endif /* WOLFTPM_LINUX_DEV || WOLFTPM_SWTPM || WOLFTPM_WINAPI */
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#endif /* WOLFTPM_INCLUDE_IO_FILE */
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/******************************************************************************/
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/* --- END IO Callback Logic -- */
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/******************************************************************************/
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