141 lines
4.4 KiB
C
141 lines
4.4 KiB
C
/****************************************************************************
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* config/sama5d3x-ek/src/sam_at25.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/mount.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/mtd/mtd.h>
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#include <nuttx/fs/nxffs.h>
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#include "sam_spi.h"
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#include "sama5d3x-ek.h"
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#ifdef HAVE_AT25
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sam_at25_automount
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*
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* Description:
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* Initialize and configure the AT25 serial FLASH
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*
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****************************************************************************/
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int sam_at25_automount(int minor)
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{
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FAR struct spi_dev_s *spi;
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FAR struct mtd_dev_s *mtd;
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static bool initialized = false;
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int ret;
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/* Have we already initialized? */
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if (!initialized)
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{
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/* No.. Get the SPI port driver */
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spi = sam_spibus_initialize(AT25_PORT);
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if (!spi)
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{
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ferr("ERROR: Failed to initialize SPI port %d\n", AT25_PORT);
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return -ENODEV;
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}
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/* Now bind the SPI interface to the AT25 SPI FLASH driver */
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mtd = at25_initialize(spi);
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if (!mtd)
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{
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ferr("ERROR: Failed to bind SPI port %d to the AT25 FLASH driver\n");
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return -ENODEV;
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}
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#if defined(CONFIG_SAMA5D3xEK_AT25_FTL)
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/* And finally, use the FTL layer to wrap the MTD driver as a block driver */
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ret = ftl_initialize(AT25_MINOR, mtd);
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if (ret < 0)
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{
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ferr("ERROR: Failed to initialize the FTL layer: %d\n", ret);
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return ret;
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}
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#elif defined(CONFIG_SAMA5D3xEK_AT25_NXFFS)
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/* Initialize to provide NXFFS on the MTD interface */
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ret = nxffs_initialize(mtd);
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if (ret < 0)
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{
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ferr("ERROR: NXFFS initialization failed: %d\n", ret);
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return ret;
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}
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/* Mount the file system at /mnt/at25 */
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ret = mount(NULL, "/mnt/at25", "nxffs", 0, NULL);
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if (ret < 0)
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{
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ferr("ERROR: Failed to mount the NXFFS volume: %d\n", errno);
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return ret;
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}
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#endif
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/* Now we are initializeed */
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initialized = true;
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}
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return OK;
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}
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#endif /* HAVE_AT25 */
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