128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/****************************************************************************
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* boards/arm/sama5/sama5d2-xult/src/sam_at25.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <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/fs.h>
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#include <nuttx/fs/nxffs.h>
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#include "sam_spi.h"
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#include "sama5d2-xult.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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struct spi_dev_s *spi;
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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 AT25 FLASH driver\n");
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return -ENODEV;
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}
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#if defined(CONFIG_SAMA5D3XPLAINED_AT25_FTL)
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/* And 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_SAMA5D3XPLAINED_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 = nx_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", ret);
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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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