SAMV71-XULT: Add support for the NXFFS file system on QuadSPI

configs/samv71-xult/README.txt

@@ -503,6 +503,8 @@ FLASH:
   CONFIG_S25FL1_QSPIMODE=0
   CONFIG_S25FL1_QSPI_FREQUENCY=108000000
 
+SmartFS
+-------
 I tested using the SmartFS FLASH file system.  This additional options
 enable the SmartFS:
 
@@ -535,6 +537,36 @@ A better application design would perform SmartFS initialization
 asynchronously on a separate thread to avoid the delay at the user
 interface.
 
+Update: SmartFS support is disabled temporarily due to some
+integration issues that still need to be resolved.
+
+NXFFS
+-----
+The NXFFS file system is selected with the following settings.
+
+  CONFIG_FS_NXFFS=y
+  CONFIG_NXFFS_ERASEDSTATE=0xff
+  CONFIG_NXFFS_MAXNAMLEN=255
+  CONFIG_NXFFS_PACKTHRESHOLD=32
+  CONFIG_NXFFS_PREALLOCATED=y
+  CONFIG_NXFFS_TAILTHRESHOLD=8192
+
+The NXFFS file system is automatically mounted by logic src/sam_bringup.c when the system boots:
+
+  nsh> mount
+    /mnt/s25fl1 type nxffs
+  nsh> echo "This is a test" >/mnt/s25fl1/atest.txt
+  nsh> ls /mnt/s25fl1
+  /mnt/s25fl1:
+   atest.txt
+  nsh> cat /mnt/s25fl1/atest.txt
+  This is a test
+
+Character Driver
+----------------
+If neither SmartFS nor NXFFS are defined, then the S25FL1 driver will be
+wrapped as a character driver and available as /dev/mtd0.
+
 Networking
 ==========
 

configs/samv71-xult/src/sam_bringup.c

@@ -52,6 +52,7 @@
 
 #include <nuttx/fs/fs.h>
 #include <nuttx/fs/ramdisk.h>
+#include <nuttx/fs/nxffs.h>
 #include <nuttx/binfmt/elf.h>
 
 #include "samv71-xult.h"
@@ -99,7 +100,7 @@ int sam_bringup(void)
 #ifdef HAVE_S25FL1
   FAR struct qspi_dev_s *qspi;
   FAR struct mtd_dev_s *mtd;
-#ifndef HAVE_SMARTFS
+#ifndef HAVE_S25FL1_SMARTFS
   char blockdev[18];
   char chardev[12];
 #endif
@@ -213,7 +214,7 @@ int sam_bringup(void)
           SYSLOG("ERROR: s25fl1_initialize failed\n");
         }
 
-#ifdef HAVE_SMARTFS
+#ifdef HAVE_S25FL1_SMARTFS
       /* Configure the device with no partition support */
 
       ret = smart_initialize(S25FL1_SMART_MINOR, mtd, NULL);
@@ -222,6 +223,24 @@ int sam_bringup(void)
           SYSLOG("ERROR: Failed to initialize SmartFS: %d\n", ret);
         }
 
+#elif defined(HAVE_S25FL1_NXFFS)
+      /* Initialize to provide NXFFS on the S25FL1 MTD interface */
+
+      ret = nxffs_initialize(mtd);
+      if (ret < 0)
+        {
+         SYSLOG("ERROR: NXFFS initialization failed: %d\n", ret);
+        }
+
+      /* Mount the file system at /mnt/s25fl1 */
+
+      ret = mount(NULL, "/mnt/s25fl1", "nxffs", 0, NULL);
+      if (ret < 0)
+        {
+          SYSLOG("ERROR: Failed to mount the NXFFS volume: %d\n", errno);
+          return ret;
+        }
+
 #else
       /* Use the FTL layer to wrap the MTD driver as a block driver */
 

configs/samv71-xult/src/samv71-xult.h

@@ -53,18 +53,19 @@
  ************************************************************************************/
 /* Configuration ********************************************************************/
 
-#define HAVE_HSMCI       1
-#define HAVE_AUTOMOUNTER 1
-#define HAVE_USB         1
-#define HAVE_USBDEV      1
-#define HAVE_USBMONITOR  1
-#define HAVE_NETWORK     1
-#define HAVE_MACADDR     1
-#define HAVE_MTDCONFIG   1
-#define HAVE_S25FL1      1
-#define HAVE_SMARTFS     1
-#define HAVE_WM8904      1
-#define HAVE_AUDIO_NULL  1
+#define HAVE_HSMCI          1
+#define HAVE_AUTOMOUNTER    1
+#define HAVE_USB            1
+#define HAVE_USBDEV         1
+#define HAVE_USBMONITOR     1
+#define HAVE_NETWORK        1
+#define HAVE_MACADDR        1
+#define HAVE_MTDCONFIG      1
+#define HAVE_S25FL1         1
+#define HAVE_S25FL1_NXFFS   1
+#undef  HAVE_S25FL1_SMARTFS   /* There are some issues to be resolved */
+#define HAVE_WM8904         1
+#define HAVE_AUDIO_NULL     1
 
 /* HSMCI */
 /* Can't support MMC/SD if the card interface is not enabled */
@@ -187,16 +188,22 @@
 
 #ifndef CONFIG_MTD_S25FL1
 #  undef HAVE_S25FL1
-#  undef HAVE_SMARTFS
+#  undef HAVE_S25FL1_NXFFS
+#  undef HAVE_S25FL1_SMARTFS
 #endif
 
 #ifndef CONFIG_SAMV7_QSPI
 #  undef HAVE_S25FL1
-#  undef HAVE_SMARTFS
+#  undef HAVE_S25FL1_NXFFS
+#  undef HAVE_S25FL1_SMARTFS
+#endif
+
+#ifndef CONFIG_FS_NXFFS
+#  undef HAVE_S25FL1_NXFFS
 #endif
 
 #if !defined(CONFIG_MTD_SMART) || !defined(CONFIG_FS_SMARTFS)
-#  undef HAVE_SMARTFS
+#  undef HAVE_S25FL1_SMARTFS
 #endif
 
 /* If both the S25FL1 FLASH and SmartFS, then this is the minor device