SAMA5D4-EK: NSH confuration now has FAT/ROMFS, /dev/zero, /dev/random via TRNG, an NSH startup script, and a RAM disk at /tmp

8 files changed, 222 insertions, 36 deletions

diff --git a/apps/nshlib/Kconfig b/apps/nshlib/Kconfig
index 4440fcaca..d4bca38e7 100644
--- a/apps/nshlib/Kconfig
+++ b/apps/nshlib/Kconfig
@@ -536,7 +536,7 @@ config NSH_ARCHROMFS
 
 config NSH_FATDEVNO
 	int "FAT block device minor number"
-	default 0
+	default 1
 	depends on FS_FAT
 	---help---
 		When the default rcS file used when NSH_ROMFSETC is selected, it
diff --git a/apps/nshlib/README.txt b/apps/nshlib/README.txt
index 7a59e7c06..f4dc84be7 100644
--- a/apps/nshlib/README.txt
+++ b/apps/nshlib/README.txt
@@ -211,7 +211,7 @@ Modifying the ROMFS Image
 
 The contents of the /etc directory are retained in the file
 apps/nshlib/nsh_romfsimg.h (OR, if CONFIG_NSH_ARCHROMFS
-is defined, include/arch/board/rcs.template).  In order to modify
+is defined, include/arch/board/rcS.template).  In order to modify
 the start-up behavior, there are three things to study:
 
 1. Configuration Options.
diff --git a/nuttx/configs/sama5d3-xplained/README.txt b/nuttx/configs/sama5d3-xplained/README.txt
index ad3d23c56..31696553e 100644
--- a/nuttx/configs/sama5d3-xplained/README.txt
+++ b/nuttx/configs/sama5d3-xplained/README.txt
@@ -2265,14 +2265,18 @@ TRNG and /dev/random
 
   NSH can be configured to enable the SAMA5 TRNG peripheral so that it
   provides /dev/random.  The following configuration will enable the TRNG,
-  /dev/random, and the simple test of /dev/random at apps/examples/ranadom:
+  and support for /dev/random:
 
     System Type:
       CONFIG_SAMA5_TRNG=y                 : Enable the TRNG peripheral
 
-    Drivers (automatically selected):
+    Drivers:
       CONFIG_DEV_RANDOM=y                 : Enable /dev/random
 
+  A simple test of /dev/random is available at apps/examples/random and
+  can be enabled as a NSH application via the following additional
+  configuration settings:
+
     Applications -> Examples
       CONFIG_EXAMPLES_RANDOM=y            : Enable apps/examples/random
       CONFIG_EXAMPLES_MAXSAMPLES=64       : Default settings are probably OK
diff --git a/nuttx/configs/sama5d3x-ek/README.txt b/nuttx/configs/sama5d3x-ek/README.txt
index 2f127b1aa..802704c75 100644
--- a/nuttx/configs/sama5d3x-ek/README.txt
+++ b/nuttx/configs/sama5d3x-ek/README.txt
@@ -2535,14 +2535,18 @@ TRNG and /dev/random
 
   NSH can be configured to enable the SAMA5 TRNG peripheral so that it
   provides /dev/random.  The following configuration will enable the TRNG,
-  /dev/random, and the simple test of /dev/random at apps/examples/ranadom:
+  and support for /dev/random:
 
     System Type:
       CONFIG_SAMA5_TRNG=y                 : Enable the TRNG peripheral
 
-    Drivers (automatically selected):
+    Drivers:
       CONFIG_DEV_RANDOM=y                 : Enable /dev/random
 
+  A simple test of /dev/random is available at apps/examples/random and
+  can be enabled as a NSH application via the following additional
+  configuration settings:
+
     Applications -> Examples
       CONFIG_EXAMPLES_RANDOM=y            : Enable apps/examples/random
       CONFIG_EXAMPLES_MAXSAMPLES=64       : Default settings are probably OK
diff --git a/nuttx/configs/sama5d4-ek/README.txt b/nuttx/configs/sama5d4-ek/README.txt
index c1c6f200c..464460ab7 100644
--- a/nuttx/configs/sama5d4-ek/README.txt
+++ b/nuttx/configs/sama5d4-ek/README.txt
@@ -2628,14 +2628,18 @@ TRNG and /dev/random
 
   NSH can be configured to enable the SAMA5 TRNG peripheral so that it
   provides /dev/random.  The following configuration will enable the TRNG,
-  /dev/random, and the simple test of /dev/random at apps/examples/ranadom:
+  and support for /dev/random:
 
     System Type:
       CONFIG_SAMA5_TRNG=y                 : Enable the TRNG peripheral
 
-    Drivers (automatically selected):
+    Drivers:
       CONFIG_DEV_RANDOM=y                 : Enable /dev/random
 
+  A simple test of /dev/random is available at apps/examples/random and
+  can be enabled as a NSH application via the following additional
+  configuration settings:
+
     Applications -> Examples
       CONFIG_EXAMPLES_RANDOM=y            : Enable apps/examples/random
       CONFIG_EXAMPLES_MAXSAMPLES=64       : Default settings are probably OK
@@ -3206,52 +3210,113 @@ Configurations
          U-Boot> fatload mmc 0 0x20008000 nuttx.bin
          U-Boot> go 0x20008040
 
-    4. This configuration has support for NSH built-in applications enabled.
-       However, no built-in applications are selected in the base configuration.
+    4. This configuration supports /dev/null, /dev/zero, and /dev/random.
+
+         CONFIG_DEV_NULL=y    : Enables /dev/null
+         CONFIG_DEV_ZERO=y    : Enabled /dev/zero
+
+       Support for /dev/random is implemented using the SAMA5D4's True
+       Random Number Generator (TRNG).  See the section above entitled
+       "TRNG and /dev/random" for information about configuring /dev/random.
+
+        CONFIG_SAMA5_TRNG=y   : Enables the TRNG peripheral
+        CONFIG_DEV_RANDOM=y   : Enables /dev/random
+
+    5. This configuration has support for NSH built-in applications enabled.
+
+    6. This configuration has support for the FAT and ROMFS file systems
+       built in.
+
+       The FAT file system includes long file name support.  Please be aware
+       that Microsoft claims patents against the long file name support (see
+       more discussion in the top-level COPYING file).
+
+         CONFIG_FS_FAT=y        : Enables the FAT file system
+         CONFIG_FAT_LCNAMES=y   : Enable lower case 8.3 file names
+         CONFIG_FAT_LFN=y       : Enables long file name support
+         CONFIG_FAT_MAXFNAME=32 : Arbitrarily limits the size of a path
+                                  segment name to 32 bytes
+
+       The ROMFS file system is enabled simply with:
+
+         CONFIG_FS_ROMFS=y      : Enable ROMFS file system
 
-    5. This configuration has support for the FAT file system built in.
-       However, by default, there are no block drivers initialized.  The FAT
-       file system can still be used to create RAM disks.
+    6. An NSH star-up script is provided by the ROMFS file system.  The ROMFS
+       file system is mounted at /etc and provides:
 
-    6. The SAMA5D4-EK includes for an AT25 serial DataFlash.  Support for that
+         |- dev/
+         |   `- ram0
+         `- etc/
+             `- init.d/
+                 `- rcS
+
+       (There will, of course, be other devices uner /dev include /dev/console,
+       /dev/null, /dev/zero, /dev/random, etc.).
+
+       Relevant configuration options include:
+
+         CONFIG_NSH_ROMFSETC=y           : Enable mounting at of startup file system
+         CONFIG_NSH_ROMFSMOUNTPT="/etc"  : Mount at /etc
+         CONFIG_NSH_ROMFSDEVNO=0         : Device is /dev/ram0
+         CONFIG_NSH_ARCHROMFS=y          : ROMFS image is at
+                                           configs/sama5d4-ek/include/nsh_romfsimg.h
+       The content of /etc/init.d/rcS can be see in the file rcS.template that
+       can be found at: configs/sama5d4-ek/include/rcS.template:
+
+         mkrd -m 2 -s 512 1024
+         mkfatfs /dev/ram1
+         mount -t vfat /dev/ram1 /tmp
+
+       The above commands will create a RAM disk block device at /dev/ram1.
+       The RAM disk will take 0.4MiB of memory (512 x 1024).  Then it will
+       create a FAT file system on the ram disk and mount it at /tmp.  So
+       after NSH starts and runs the rcS script, we will have:
+
+         |- dev/
+         |   |- ram0
+         |   `- ram2
+         |- etc/
+         |   `- init.d/
+         |       `- rcS
+          `- tmp/
+
+       The /tmp directory can them be used for and scratch purpose.
+
+    7. The SAMA5D4-EK includes for an AT25 serial DataFlash.  Support for that
        serial FLASH can be enabled by modifying the NuttX configuration as
        described above in the paragraph entitled "AT25 Serial FLASH".
 
-    7. Enabling HSMCI support. The SAMA4D4-EK provides a two SD memory
+    8. Enabling HSMCI support. The SAMA4D4-EK provides a two SD memory
        card slots:  (1) a full size SD card slot (J10), and (2) a microSD
        memory card slot (J11).  The full size SD card slot connects via HSMCI0;
        the microSD connects vi HSMCI1.  Support for both SD slots can be enabled
        with the settings provided in the paragraph entitled "HSMCI Card Slots"
        above.
 
-    8. Support the USB low-, high- and full-speed OHCI host driver can be enabled
+    9. Support the USB low-, high- and full-speed OHCI host driver can be enabled
        by changing the NuttX configuration file as described in the section
        entitled "USB High-Speed Host" above.
 
-    9. Support the USB high-speed USB device driver (UDPHS) can be enabled
+   10. Support the USB high-speed USB device driver (UDPHS) can be enabled
        by changing the NuttX configuration file as described above in the
        section entitled "USB High-Speed Device."
 
-    10. I2C Tool. NuttX supports an I2C tool at apps/system/i2c that can be
-        used to peek and poke I2C devices.  See the discussion above under
-        "I2C Tool" for detailed configuration settings.
+   11. I2C Tool. NuttX supports an I2C tool at apps/system/i2c that can be
+       used to peek and poke I2C devices.  See the discussion above under
+       "I2C Tool" for detailed configuration settings.
 
-    11. Networking support via the can be added to NSH by modifying the
-        configuration.  See the "Networking" section above for detailed
-        configuration settings.
+   12. Networking support via the can be added to NSH by modifying the
+       configuration.  See the "Networking" section above for detailed
+       configuration settings.
 
-    12. The Real Time Clock/Calendar (RTC) may be enabled by reconfiguring NuttX.
-        See the section entitled "RTC" above for detailed configuration settings.
+   13. The Real Time Clock/Calendar (RTC) may be enabled by reconfiguring NuttX.
+       See the section entitled "RTC" above for detailed configuration settings.
 
-    13. This example can be configured to exercise the watchdog timer test
-        (apps/examples/watchdog).  See the detailed configuration settings in
-        the section entitled "Watchdog Timer" above.
+   14. This example can be configured to exercise the watchdog timer test
+       (apps/examples/watchdog).  See the detailed configuration settings in
+       the section entitled "Watchdog Timer" above.
 
-    14. This example can be configured to enable the SAMA5 TRNG peripheral so
-        that it provides /dev/random.  See the section entitled "TRNG and
-        /dev/random" above for detailed configuration information.
-
-    STATUS:
+   STATUS:
        See the To-Do list below
 
   ramtest:
diff --git a/nuttx/configs/sama5d4-ek/include/nsh_romfsimg.h b/nuttx/configs/sama5d4-ek/include/nsh_romfsimg.h
new file mode 100644
index 000000000..49b0ad166
--- /dev/null
+++ b/nuttx/configs/sama5d4-ek/include/nsh_romfsimg.h
@@ -0,0 +1,89 @@
+unsigned char romfs_img[] = {
+  0x2d, 0x72, 0x6f, 0x6d, 0x31, 0x66, 0x73, 0x2d, 0x00, 0x00, 0x01, 0x50,
+  0x9f, 0x13, 0x82, 0x87, 0x4e, 0x53, 0x48, 0x49, 0x6e, 0x69, 0x74, 0x56,
+  0x6f, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x49,
+  0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0xd1, 0xff, 0xff, 0x97,
+  0x2e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x20,
+  0x00, 0x00, 0x00, 0x00, 0xd1, 0xd1, 0xff, 0x80, 0x2e, 0x2e, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00,
+  0x68, 0x2d, 0x96, 0x03, 0x69, 0x6e, 0x69, 0x74, 0x2e, 0x64, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa0,
+  0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0xd1, 0xff, 0xff, 0x00,
+  0x2e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x3a, 0x00, 0x00, 0x00, 0x00,
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+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x23, 0x20, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x20, 0x61, 0x20, 0x52,
+  0x41, 0x4d, 0x44, 0x49, 0x53, 0x4b, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x6d,
+  0x6f, 0x75, 0x6e, 0x74, 0x20, 0x69, 0x74, 0x20, 0x61, 0x74, 0x20, 0x2f,
+  0x74, 0x6d, 0x70, 0x0a, 0x0a, 0x6d, 0x6b, 0x72, 0x64, 0x20, 0x2d, 0x6d,
+  0x20, 0x32, 0x20, 0x2d, 0x73, 0x20, 0x35, 0x31, 0x32, 0x20, 0x31, 0x30,
+  0x32, 0x34, 0x0a, 0x6d, 0x6b, 0x66, 0x61, 0x74, 0x66, 0x73, 0x20, 0x2f,
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+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00
+};
+unsigned int romfs_img_len = 1024;
diff --git a/nuttx/configs/sama5d4-ek/include/rcS.template b/nuttx/configs/sama5d4-ek/include/rcS.template
new file mode 100644
index 000000000..d710b965b
--- /dev/null
+++ b/nuttx/configs/sama5d4-ek/include/rcS.template
@@ -0,0 +1,6 @@
+# Create a RAMDISK at /dev/ram1, size 0.5MiB, format it with a FAT
+# file system and mount it at /tmp
+
+mkrd -m 2 -s 512 1024
+mkfatfs /dev/ram1
+mount -t vfat /dev/ram1 /tmp
diff --git a/nuttx/configs/sama5d4-ek/nsh/defconfig b/nuttx/configs/sama5d4-ek/nsh/defconfig
index 2561cc6e8..1bca65531 100644
--- a/nuttx/configs/sama5d4-ek/nsh/defconfig
+++ b/nuttx/configs/sama5d4-ek/nsh/defconfig
@@ -209,7 +209,7 @@ CONFIG_SAMA5_USART4=y
 # CONFIG_SAMA5_LCDC is not set
 # CONFIG_SAMA5_ISI is not set
 # CONFIG_SAMA5_SHA is not set
-# CONFIG_SAMA5_TRNG is not set
+CONFIG_SAMA5_TRNG=y
 # CONFIG_SAMA5_ARM is not set
 # CONFIG_SAMA5_FUSE is not set
 # CONFIG_SAMA5_MPDDRC is not set
@@ -404,7 +404,9 @@ CONFIG_PTHREAD_STACK_DEFAULT=2048
 #
 CONFIG_DISABLE_POLL=y
 CONFIG_DEV_NULL=y
-# CONFIG_DEV_ZERO is not set
+CONFIG_DEV_ZERO=y
+CONFIG_ARCH_HAVE_RNG=y
+CONFIG_DEV_RANDOM=y
 # CONFIG_LOOP is not set
 # CONFIG_RAMDISK is not set
 # CONFIG_CAN is not set
@@ -530,7 +532,7 @@ CONFIG_FAT_MAXFNAME=32
 # CONFIG_FS_FATTIME is not set
 # CONFIG_FAT_DMAMEMORY is not set
 # CONFIG_FS_NXFFS is not set
-# CONFIG_FS_ROMFS is not set
+CONFIG_FS_ROMFS=y
 # CONFIG_FS_SMARTFS is not set
 # CONFIG_FS_BINFS is not set
 # CONFIG_FS_PROCFS is not set
@@ -664,6 +666,7 @@ CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
 # CONFIG_EXAMPLES_PIPE is not set
 # CONFIG_EXAMPLES_POSIXSPAWN is not set
 # CONFIG_EXAMPLES_QENCODER is not set
+# CONFIG_EXAMPLES_RANDOM is not set
 # CONFIG_EXAMPLES_RGMP is not set
 # CONFIG_EXAMPLES_ROMFS is not set
 # CONFIG_EXAMPLES_SENDMAIL is not set
@@ -788,6 +791,17 @@ CONFIG_NSH_NESTDEPTH=3
 # CONFIG_NSH_DISABLE_ITEF is not set
 # CONFIG_NSH_DISABLE_LOOPS is not set
 # CONFIG_NSH_DISABLEBG is not set
+CONFIG_NSH_ROMFSETC=y
+# CONFIG_NSH_ROMFSRC is not set
+CONFIG_NSH_ROMFSMOUNTPT="/etc"
+CONFIG_NSH_INITSCRIPT="init.d/rcS"
+CONFIG_NSH_ROMFSDEVNO=0
+CONFIG_NSH_ROMFSSECTSIZE=64
+CONFIG_NSH_ARCHROMFS=y
+CONFIG_NSH_FATDEVNO=1
+CONFIG_NSH_FATSECTSIZE=512
+CONFIG_NSH_FATNSECTORS=1024
+CONFIG_NSH_FATMOUNTPT="/tmp"
 CONFIG_NSH_CONSOLE=y
 
 #
@@ -863,6 +877,10 @@ CONFIG_READLINE_ECHO=y
 #
 
 #
+# PHY Tool
+#
+
+#
 # Power Off
 #
 # CONFIG_SYSTEM_POWEROFF is not set