SAMA5: Add logic to auto-mount a file system on AT25 SPI FLASH for NSH

1 files changed, 169 insertions, 0 deletions

diff --git a/nuttx/configs/sama5d3x-ek/src/sam_nsh.c b/nuttx/configs/sama5d3x-ek/src/sam_nsh.c
new file mode 100644
index 000000000..401ad482f
--- /dev/null
+++ b/nuttx/configs/sama5d3x-ek/src/sam_nsh.c
@@ -0,0 +1,169 @@
+/****************************************************************************
+ * config/sama5d3x-ek/src/sam_nsh.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/mount.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <errno.h>
+#include <debug.h>
+
+#ifdef CONFIG_SAMA5_SPI0
+#  include <nuttx/spi/spi.h>
+#  include <nuttx/mtd.h>
+#  include <nuttx/fs/nxffs.h>
+
+#  include "sam_spi.h"
+#endif
+
+#include "sama5d3x-ek.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+/* Can't support the AT25 device if it SPI0 or AT25 support are not enabled */
+
+#define HAVE_AT25  1
+#if !defined(CONFIG_SAMA5_SPI0) || !defined(CONFIG_MTD_AT25)
+#  undef HAVE_AT25
+#endif
+
+/* Can't support AT25 features if mountpoints are disabled or if we were not
+ * asked to mount the AT25 part
+ */
+
+#if defined(CONFIG_DISABLE_MOUNTPOINT) || !defined(CONFIG_SAMA5_AT25_AUTOMOUNT)
+#  undef HAVE_AT25
+#endif
+
+/* If we are going to mount the AT25, then they user must also have told
+ * us what to do with it by setting one of these.
+ */
+
+#if !defined(CONFIG_SAMA5_AT25_FTL) && !defined(CONFIG_SAMA5_AT25_NXFFS)
+#  undef HAVE_AT25
+#endif
+
+#if defined(CONFIG_SAMA5_AT25_FTL) && defined(CONFIG_SAMA5_AT25_NXFFS)
+#  warning Both CONFIG_SAMA5_AT25_FTL and CONFIG_SAMA5_AT25_NXFFS are set
+#  warning Ignoring CONFIG_SAMA5_AT25_NXFFS
+#  undef CONFIG_SAMA5_AT25_NXFFS
+#endif
+
+/* Use minor device number 0 is not is provided */
+
+#ifndef CONFIG_NSH_MMCSDMINOR
+#  define CONFIG_NSH_MMCSDMINOR 0
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+#ifdef HAVE_AT25
+  FAR struct spi_dev_s *spi;
+  FAR struct mtd_dev_s *mtd;
+  int ret;
+
+  /* Get the SPI port driver */
+
+  spi = up_spiinitialize(AT25_PORT);
+  if (!spi)
+    {
+      fdbg("ERROR: Failed to initialize SPI port %d\n", AT25_PORT);
+      return -ENODEV;
+    }
+
+  /* Now bind the SPI interface to the AT25 SPI FLASH driver */
+
+  mtd = at25_initialize(spi);
+  if (!mtd)
+    {
+      fdbg("ERROR: Failed to bind SPI port %d to the AT25 FLASH driver\n");
+      return -ENODEV;
+    }
+
+#if defined(CONFIG_SAMA5_AT25_FTL)
+  /* And finally, use the FTL layer to wrap the MTD driver as a block driver */
+
+  ret = ftl_initialize(CONFIG_NSH_MMCSDMINOR, mtd);
+  if (ret < 0)
+    {
+      fdbg("ERROR: Initialize the FTL layer\n");
+      return ret;
+    }
+
+#elif defined(CONFIG_SAMA5_AT25_NXFFS)
+  /* Initialize to provide NXFFS on the MTD interface */
+
+  ret = nxffs_initialize(mtd);
+  if (ret < 0)
+    {
+      fdbg("ERROR: NXFFS initialization failed: %d\n", -ret);
+      return ret;
+    }
+
+  /* Mount the file system at /mnt/at25 */
+
+  ret = mount(NULL, "/mnt/at25", "nxffs", 0, NULL);
+  if (ret < 0)
+    {
+      fdbg("ERROR: Failed to mount the NXFFS volume: %d\n", errno);
+      return ret;
+    }
+
+#endif
+#endif
+
+  return OK;
+}