mirror of https://github.com/wolfSSL/wolfBoot.git
91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/* spi_drv_nxp.c
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*
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* Driver for the SPI back-end of the SPI_FLASH module.
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*
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* Pinout: see spi_drv_nxp.h
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*
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* Copyright (C) 2023 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot 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 3 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot 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 02110-1335, USA
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include "spi_drv.h"
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#if defined(TARGET_nxp_p1021) || defined(TARGET_nxp_t1024) || \
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defined(TARGET_nxp_ls1028a)
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#ifdef WOLFBOOT_TPM
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/* functions from nxp_p1021.c and nxp_t1024.c hal */
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extern void hal_espi_init(uint32_t cs, uint32_t clock_hz, uint32_t mode);
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extern int hal_espi_xfer(int cs, const uint8_t* tx, uint8_t* rx, uint32_t sz, int flags);
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extern void hal_espi_deinit(void);
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#if defined(TARGET_nxp_ls1028a)
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/* Functions from hal/nxp_ls1028a.c */
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extern void nxp_ls1028a_spi_init(unsigned int sel);
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extern int nxp_ls1028a_spi_xfer(unsigned int sel, unsigned int cs,
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const unsigned char *out, unsigned char *in,
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unsigned int size, int cont);
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extern void nxp_ls1028a_spi_deinit(unsigned int sel);
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#endif
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#include <wolftpm/tpm2_types.h>
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static int initialized = 0;
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void spi_init(int polarity, int phase)
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{
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if (!initialized) {
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initialized++;
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#if defined(TARGET_nxp_p1021) || defined(TARGET_nxp_t1024)
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hal_espi_init(SPI_CS_TPM, TPM2_SPI_MAX_HZ, (polarity | (phase << 1)));
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#elif defined(TARGET_nxp_ls1028a)
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nxp_ls1028a_spi_init(SPI_SEL_TPM);
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#endif
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}
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(void)polarity;
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(void)phase;
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}
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void spi_release(void)
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{
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if (initialized) {
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initialized--;
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#if defined(TARGET_nxp_p1021) || defined(TARGET_nxp_t1024)
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hal_espi_deinit();
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#elif defined(TARGET_nxp_ls1028a)
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nxp_ls1028a_spi_deinit(SPI_SEL_TPM);
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#endif
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}
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}
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int spi_xfer(int cs, const uint8_t* tx, uint8_t* rx, uint32_t sz, int flags)
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{
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#if defined(TARGET_nxp_p1021) || defined(TARGET_nxp_t1024)
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return hal_espi_xfer(cs, tx, rx, sz, flags);
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#elif defined(TARGET_nxp_ls1028a)
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return nxp_ls1028a_spi_xfer(SPI_SEL_TPM, cs, tx, rx, sz, flags);
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#endif
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}
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#endif /* WOLFBOOT_TPM */
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#endif /* TARGET_ */
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