diff --git a/configs/amber/hello/defconfig b/configs/amber/hello/defconfig
index b148b1e0d78..66127604ec6 100644
--- a/configs/amber/hello/defconfig
+++ b/configs/amber/hello/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=4096
 CONFIG_DRAM_START=0x800100
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=n
diff --git a/configs/avr32dev1/nsh/defconfig b/configs/avr32dev1/nsh/defconfig
index 730d843918f..b9f6e35a6c9 100755
--- a/configs/avr32dev1/nsh/defconfig
+++ b/configs/avr32dev1/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x00000000
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/avr32dev1/ostest/defconfig b/configs/avr32dev1/ostest/defconfig
index e8d8e378ad1..74ac8f07228 100755
--- a/configs/avr32dev1/ostest/defconfig
+++ b/configs/avr32dev1/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x00000000
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/demo9s12ne64/ostest/defconfig b/configs/demo9s12ne64/ostest/defconfig
index e3b6cac17b3..6265e6e53f7 100755
--- a/configs/demo9s12ne64/ostest/defconfig
+++ b/configs/demo9s12ne64/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ea3131/nsh/defconfig b/configs/ea3131/nsh/defconfig
index 928fdb23926..32521f012f6 100644
--- a/configs/ea3131/nsh/defconfig
+++ b/configs/ea3131/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x11028000
 CONFIG_DRAM_VSTART=0x11028000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ea3131/ostest/defconfig b/configs/ea3131/ostest/defconfig
index 6b6b9b584e8..1ef35f969b2 100644
--- a/configs/ea3131/ostest/defconfig
+++ b/configs/ea3131/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x11028000
 CONFIG_DRAM_VSTART=0x11028000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ea3131/pgnsh/defconfig b/configs/ea3131/pgnsh/defconfig
index 8f49d59a85f..995bc90d989 100644
--- a/configs/ea3131/pgnsh/defconfig
+++ b/configs/ea3131/pgnsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x11028000
 CONFIG_DRAM_VSTART=0x11028000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ea3131/usbserial/defconfig b/configs/ea3131/usbserial/defconfig
index 7dae3c2cfd8..4e45989dfa3 100644
--- a/configs/ea3131/usbserial/defconfig
+++ b/configs/ea3131/usbserial/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x11028000
 CONFIG_DRAM_VSTART=0x11028000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ea3131/usbstorage/defconfig b/configs/ea3131/usbstorage/defconfig
index 6ee7bb40db2..772de7e694a 100644
--- a/configs/ea3131/usbstorage/defconfig
+++ b/configs/ea3131/usbstorage/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x11028000
 CONFIG_DRAM_VSTART=0x11028000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ea3152/ostest/defconfig b/configs/ea3152/ostest/defconfig
index 5af1310f4c9..845faf60b51 100644
--- a/configs/ea3152/ostest/defconfig
+++ b/configs/ea3152/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x11028000
 CONFIG_DRAM_VSTART=0x11028000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/eagle100/httpd/defconfig b/configs/eagle100/httpd/defconfig
index 3ad9220977d..0fdddc2df1d 100644
--- a/configs/eagle100/httpd/defconfig
+++ b/configs/eagle100/httpd/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/eagle100/nettest/defconfig b/configs/eagle100/nettest/defconfig
index 78994b11eaa..943f4622305 100644
--- a/configs/eagle100/nettest/defconfig
+++ b/configs/eagle100/nettest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/eagle100/nsh/defconfig b/configs/eagle100/nsh/defconfig
index fb2fcf5ffdf..2e04850b3c1 100644
--- a/configs/eagle100/nsh/defconfig
+++ b/configs/eagle100/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/eagle100/nxflat/defconfig b/configs/eagle100/nxflat/defconfig
index 7befde172c7..d4228f16b4d 100644
--- a/configs/eagle100/nxflat/defconfig
+++ b/configs/eagle100/nxflat/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/eagle100/ostest/defconfig b/configs/eagle100/ostest/defconfig
index 6bcde74b93f..6cffe1450dd 100644
--- a/configs/eagle100/ostest/defconfig
+++ b/configs/eagle100/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/eagle100/thttpd/defconfig b/configs/eagle100/thttpd/defconfig
index b329609459f..afb7dbce83a 100644
--- a/configs/eagle100/thttpd/defconfig
+++ b/configs/eagle100/thttpd/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ekk-lm3s9b96/nsh/defconfig b/configs/ekk-lm3s9b96/nsh/defconfig
index e1422da7fd5..1e162a4a129 100644
--- a/configs/ekk-lm3s9b96/nsh/defconfig
+++ b/configs/ekk-lm3s9b96/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=98304
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/ekk-lm3s9b96/ostest/defconfig b/configs/ekk-lm3s9b96/ostest/defconfig
index 4eebaca3a3d..d08e990774f 100644
--- a/configs/ekk-lm3s9b96/ostest/defconfig
+++ b/configs/ekk-lm3s9b96/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=98304
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/fire-stm32v2/README.txt b/configs/fire-stm32v2/README.txt
index d01ba3219a8..3a94365afc1 100644
--- a/configs/fire-stm32v2/README.txt
+++ b/configs/fire-stm32v2/README.txt
@@ -765,10 +765,18 @@ Where <subdir> is one of the following:
     contains support for some built-in applications that can be enabled by making
     some additional minor change to the configuration file.
 
-    NOTE:  This configuration uses to the mconf configuration tool to control
+    Reconfiguring:  This configuration uses to the mconf configuration tool to control
     the configuration.  See the section entitled "NuttX Configuration Tool"
     in the top-level README.txt file.
 
+    Start Delays:  If no SD card is present in the slot, or if the network is not
+    connected, then there will be long start-up delays before you get the NSH
+    prompt.  If I am focused on ENC28J60 debug, I usually disable MMC/SD so that
+    I don't have to bother with the SD card:
+
+      CONFIG_STM32_SDIO=n
+      CONFIG_MMCSD=n
+
     STATUS:  The board port is basically functional. Not all features have been
     verified.  The ENC28J60 network is not yet functional.  Networking is
     enabled by default in this configuration for testing purposes.  To use this
diff --git a/configs/fire-stm32v2/nsh/defconfig b/configs/fire-stm32v2/nsh/defconfig
index 1a849ad3677..fd51878010e 100644
--- a/configs/fire-stm32v2/nsh/defconfig
+++ b/configs/fire-stm32v2/nsh/defconfig
@@ -201,7 +201,7 @@ CONFIG_ARCH_STACKDUMP=y
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_SIZE=65536
 CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
-# CONFIG_ARCH_INTERRUPTSTACK is not set
+CONFIG_ARCH_INTERRUPTSTACK=0
 
 #
 # Boot options
@@ -289,8 +289,8 @@ CONFIG_NAME_MAX=32
 CONFIG_PREALLOC_MQ_MSGS=4
 CONFIG_MQ_MAXMSGSIZE=32
 CONFIG_MAX_WDOGPARMS=2
-CONFIG_PREALLOC_WDOGS=4
-CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_WDOGS=16
+CONFIG_PREALLOC_TIMERS=8
 
 #
 # Stack and heap information
@@ -387,12 +387,17 @@ CONFIG_USART2_BITS=8
 CONFIG_USART2_PARITY=0
 CONFIG_USART2_2STOP=0
 CONFIG_USBDEV=y
-# CONFIG_USBDEV_COMPOSITE is not set
+
+#
+# Device Controller Driver Options
+#
 # CONFIG_USBDEV_ISOCHRONOUS is not set
 # CONFIG_USBDEV_DUALSPEED is not set
 CONFIG_USBDEV_SELFPOWERED=y
 # CONFIG_USBDEV_BUSPOWERED is not set
+# CONFIG_USBDEV_DMA is not set
 # CONFIG_USBDEV_TRACE is not set
+# CONFIG_USBDEV_COMPOSITE is not set
 # CONFIG_PL2303 is not set
 # CONFIG_CDCACM is not set
 CONFIG_USBMSC=y
@@ -425,7 +430,7 @@ CONFIG_USBMSC_REMOVABLE=y
 # Networking Support
 #
 CONFIG_NET=y
-# CONFIG_NET_NOINTS is not set
+CONFIG_NET_NOINTS=y
 # CONFIG_NET_MULTIBUFFER is not set
 # CONFIG_NET_IPv6 is not set
 CONFIG_NSOCKET_DESCRIPTORS=16
@@ -521,142 +526,142 @@ CONFIG_NAMEDAPP=y
 #
 
 #
-# ADC example
+# ADC Example
 #
 # CONFIG_EXAMPLES_ADC is not set
 
 #
-# Buttons example
+# Buttons Example
 #
 # CONFIG_EXAMPLES_BUTTONS is not set
 
 #
-# CAN example
+# CAN Example
 #
 # CONFIG_EXAMPLES_CAN is not set
 
 #
-# USB CDC/ACM class driver example
+# USB CDC/ACM Class Driver Example
 #
 # CONFIG_EXAMPLES_CDCACM is not set
 
 #
-# USB composite class driver example
+# USB composite Class Driver Example
 #
 # CONFIG_EXAMPLES_COMPOSITE is not set
 
 #
-# DHCP server example
+# DHCP Server Example
 #
 # CONFIG_EXAMPLES_DHCPD is not set
 
 #
-# FTP client example
+# FTP Client Example
 #
 # CONFIG_EXAMPLES_FTPC is not set
 
 #
-# FTP server example
+# FTP Server Example
 #
 # CONFIG_EXAMPLES_FTPD is not set
 
 #
-# "Hello, World!" example
+# "Hello, World!" Example
 #
 # CONFIG_EXAMPLES_HELLO is not set
 
 #
-# "Hello, World!" C++ example
+# "Hello, World!" C++ Example
 #
 # CONFIG_EXAMPLES_HELLOXX is not set
 
 #
-# USB HID keyboard example
+# USB HID Keyboard Example
 #
 # CONFIG_EXAMPLES_HIDKBD is not set
 
 #
-# IGMP example
+# IGMP Example
 #
 # CONFIG_EXAMPLES_IGMP is not set
 
 #
-# LCD read/write example
+# LCD Read/Write Example
 #
 # CONFIG_EXAMPLES_LCDRW is not set
 
 #
-# Memory management example
+# Memory Management Example
 #
 # CONFIG_EXAMPLES_MM is not set
 
 #
-# File system mount example
+# File System Mount Example
 #
 # CONFIG_EXAMPLES_MOUNT is not set
 
 #
-# FreeModBus example
+# FreeModBus Example
 #
 # CONFIG_EXAMPLES_MODBUS is not set
 
 #
-# Network test example
+# Network Test Example
 #
 # CONFIG_EXAMPLES_NETTEST is not set
 
 #
-# NuttShell (NSH) example
+# NuttShell (NSH) Example
 #
 CONFIG_EXAMPLES_NSH=y
 
 #
-# NULL example
+# NULL Example
 #
 # CONFIG_EXAMPLES_NULL is not set
 
 #
-# NX graphics example
+# NX Graphics Example
 #
 # CONFIG_EXAMPLES_NX is not set
 
 #
-# NxConsole example
+# NxConsole Example
 #
 # CONFIG_EXAMPLES_NXCONSOLE is not set
 
 #
-# NXFFS file system example
+# NXFFS File System Example
 #
 # CONFIG_EXAMPLES_NXFFS is not set
 
 #
-# NXFLAT example
+# NXFLAT Example
 #
 # CONFIG_EXAMPLES_NXFLAT is not set
 
 #
-# NX graphics "Hello, World!" example
+# NX Graphics "Hello, World!" Example
 #
 # CONFIG_EXAMPLES_NXHELLO is not set
 
 #
-# NX graphics image example
+# NX Graphics image Example
 #
 # CONFIG_EXAMPLES_NXIMAGE is not set
 
 #
-# NX graphics lines example
+# NX Graphics lines Example
 #
 # CONFIG_EXAMPLES_NXLINES is not set
 
 #
-# NX graphics text example
+# NX Graphics Text Example
 #
 # CONFIG_EXAMPLES_NXTEXT is not set
 
 #
-# OS test example
+# OS Test Example
 #
 # CONFIG_EXAMPLES_OSTEST is not set
 
@@ -666,81 +671,86 @@ CONFIG_EXAMPLES_NSH=y
 # CONFIG_EXAMPLES_PASHELLO is not set
 
 #
-# Pipe example
+# Pipe Example
 #
 # CONFIG_EXAMPLES_PIPE is not set
 
 #
-# Poll example
+# Poll Example
 #
 # CONFIG_EXAMPLES_POLL is not set
 
 #
-# Pulse width modulation (PWM) example
+# Pulse Width Modulation (PWM) Example
 #
 
 #
-# Quadrature encoder example
+# Quadrature Encoder Example
 #
 # CONFIG_EXAMPLES_QENCODER is not set
 
 #
-# RGMP example
+# RGMP Example
 #
 # CONFIG_EXAMPLES_RGMP is not set
 
 #
-# ROMFS example
+# ROMFS Example
 #
 # CONFIG_EXAMPLES_ROMFS is not set
 
 #
-# sendmail example
+# sendmail Example
 #
 # CONFIG_EXAMPLES_SENDMAIL is not set
 
 #
-# Serial loopback example
+# Serial Loopback Example
 #
 # CONFIG_EXAMPLES_SERLOOP is not set
 
 #
-# Telnet daemon example
+# Telnet Daemon Example
 #
 # CONFIG_EXAMPLES_TELNETD is not set
 
 #
-# THTTPD web server example
+# THTTPD Web Server Example
 #
 # CONFIG_EXAMPLES_THTTPD is not set
 
 #
-# TIFF generation example
+# TIFF Generation Example
 #
 # CONFIG_EXAMPLES_TIFF is not set
 
 #
-# Touchscreen example
+# Touchscreen Example
 #
 # CONFIG_EXAMPLES_TOUCHSCREEN is not set
 
 #
-# UDP example
+# UDP Example
 #
 # CONFIG_EXAMPLES_UDP is not set
 
 #
-# uIP web server example
+# UDP Discovery Daemon Example
+#
+# CONFIG_EXAMPLE_DISCOVER is not set
+
+#
+# uIP Web Server Example
 #
 # CONFIG_EXAMPLES_UIP is not set
 
 #
-# USB serial test example
+# USB Serial Test Example
 #
 # CONFIG_EXAMPLES_USBSERIAL is not set
 
 #
-# USB mass storage class example
+# USB Mass Storage Class Example
 #
 CONFIG_EXAMPLES_USBMSC=y
 CONFIG_EXAMPLES_USBMSC_BUILTIN=y
@@ -759,25 +769,29 @@ CONFIG_EXAMPLES_USBMSC_DEVPATH3="/dev/mmcsd2"
 # CONFIG_EXAMPLES_USBMSC_TRACEINTERRUPTS is not set
 
 #
-# USB serial terminal example
+# USB Serial Terminal Example
 #
 # CONFIG_EXAMPLES_USBTERM is not set
 
 #
-# Watchdog timer example
+# Watchdog timer Example
 #
 # CONFIG_EXAMPLES_WATCHDOG is not set
 
 #
-# wget example
+# wget Example
 #
 # CONFIG_EXAMPLES_WGET is not set
 
 #
-# WLAN example
+# WLAN Example
 #
 # CONFIG_EXAMPLES_WLAN is not set
 
+#
+# XML RPC Example
+#
+
 #
 # Interpreters
 #
@@ -857,6 +871,16 @@ CONFIG_NETUTILS_WEBCLIENT=y
 #
 # CONFIG_NETUTILS_WEBSERVER is not set
 
+#
+# UDP Discovery Utility
+#
+# CONFIG_NETUTILS_DISCOVER is not set
+
+#
+# XML-RPC library
+#
+# CONFIG_NETUTILS_XMLRPC is not set
+
 #
 # ModBus
 #
@@ -933,7 +957,7 @@ CONFIG_NSH_IOBUFFER_SIZE=512
 CONFIG_NSH_IPADDR=0x0a000002
 CONFIG_NSH_DRIPADDR=0x0a000001
 CONFIG_NSH_NETMASK=0xffffff00
-# CONFIG_NSH_NOMAC is not set
+CONFIG_NSH_NOMAC=y
 
 #
 # System NSH Add-Ons
diff --git a/configs/fire-stm32v2/src/Makefile b/configs/fire-stm32v2/src/Makefile
index 4c4fd1d4178..d605a8f3bfa 100644
--- a/configs/fire-stm32v2/src/Makefile
+++ b/configs/fire-stm32v2/src/Makefile
@@ -56,10 +56,6 @@ else
 CSRCS		+= up_userleds.c
 endif
 
-ifeq ($(CONFIG_ENC28J60),y)
-CSRCS		+= up_enc28j60.c
-endif
-
 ifeq ($(CONFIG_ARCH_BUTTONS),y)
 CSRCS		+=  up_buttons.c
 endif
@@ -68,6 +64,14 @@ ifeq ($(CONFIG_NSH_ARCHINIT),y)
 CSRCS		+= up_nsh.c
 endif
 
+ifeq ($(CONFIG_ENC28J60),y)
+CSRCS		+= up_enc28j60.c
+endif
+
+ifeq ($(CONFIG_MTD_W25),y)
+CSRCS		+= up_w25.c
+endif
+
 ifeq ($(CONFIG_USBMSC),y)
 CSRCS		+= up_usbmsc.c
 endif
diff --git a/configs/fire-stm32v2/src/fire-internal.h b/configs/fire-stm32v2/src/fire-internal.h
index 801fb127ea9..e9f7a850894 100644
--- a/configs/fire-stm32v2/src/fire-internal.h
+++ b/configs/fire-stm32v2/src/fire-internal.h
@@ -214,15 +214,16 @@
 #  warning "TFT LCD and ENCJ2860 shared PE1"
 #endif
 
-/* CS and Reset are active low.  Initial states are not selected and not in
- * reset (driver does a soft reset).
+/* CS and Reset are active low.  Initial states are not selected and in
+ * reset.  The ENC28J60 is taken out of reset when the driver is
+ * initialized (thedriver does a soft reset too).
  */
 
 #ifdef CONFIG_ENC28J60
 #  define GPIO_ENC28J60_CS    (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
                                GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN4)
 #  define GPIO_ENC28J60_RESET (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
-                               GPIO_OUTPUT_SET|GPIO_PORTE|GPIO_PIN1)
+                               GPIO_OUTPUT_CLEAR|GPIO_PORTE|GPIO_PIN1)
 #  define GPIO_ENC28J60_INTR  (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\
                                GPIO_EXTI|GPIO_PORTE|GPIO_PIN5)
 #endif
@@ -302,6 +303,18 @@ void stm32_selectlcd(void);
 
 int stm32_sdinitialize(int minor);
 
+/****************************************************************************
+ * Name: stm32_w25initialize
+ *
+ * Description:
+ *   Initialize and register the W25 FLASH file system.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_MTD_W25
+int stm32_w25initialize(int minor);
+#endif
+
 #endif /* __ASSEMBLY__ */
 #endif /* __CONFIGS_FIRE_STM32V2_SRC_FIRE_INTERNAL_H */
 
diff --git a/configs/fire-stm32v2/src/up_autoleds.c b/configs/fire-stm32v2/src/up_autoleds.c
index 4e70b01dd2e..5ecef46c0ee 100644
--- a/configs/fire-stm32v2/src/up_autoleds.c
+++ b/configs/fire-stm32v2/src/up_autoleds.c
@@ -115,23 +115,23 @@
 
 #define LED_STARTED_ON_SETBITS       (0)
 #define LED_STARTED_ON_CLRBITS       ((FIRE_LED1|FIRE_LED2|FIRE_LED3) << ON_CLRBITS_SHIFT)
-#define LED_STARTED_OFF_SETBITS      LED_STARTED_ON_SETBITS
-#define LED_STARTED_OFF_CLRBITS      LED_STARTED_ON_CLRBITS
+#define LED_STARTED_OFF_SETBITS      (0)
+#define LED_STARTED_OFF_CLRBITS      ((FIRE_LED1|FIRE_LED2|FIRE_LED3) << OFF_CLRBITS_SHIFT)
 
 #define LED_HEAPALLOCATE_ON_SETBITS  ((FIRE_LED1) << ON_SETBITS_SHIFT)
 #define LED_HEAPALLOCATE_ON_CLRBITS  ((FIRE_LED2|FIRE_LED3) << ON_CLRBITS_SHIFT)
-#define LED_HEAPALLOCATE_OFF_SETBITS LED_STARTED_ON_SETBITS
-#define LED_HEAPALLOCATE_OFF_CLRBITS LED_STARTED_ON_CLRBITS
+#define LED_HEAPALLOCATE_OFF_SETBITS (0)
+#define LED_HEAPALLOCATE_OFF_CLRBITS ((FIRE_LED1|FIRE_LED2|FIRE_LED3) << OFF_CLRBITS_SHIFT)
 
 #define LED_IRQSENABLED_ON_SETBITS   ((FIRE_LED2) << ON_SETBITS_SHIFT)
 #define LED_IRQSENABLED_ON_CLRBITS   ((FIRE_LED1|FIRE_LED3) << ON_CLRBITS_SHIFT)
-#define LED_IRQSENABLED_OFF_SETBITS  LED_HEAPALLOCATE_ON_SETBITS
-#define LED_IRQSENABLED_OFF_CLRBITS  LED_HEAPALLOCATE_ON_CLRBITS
+#define LED_IRQSENABLED_OFF_SETBITS  ((FIRE_LED1) << OFF_SETBITS_SHIFT)
+#define LED_IRQSENABLED_OFF_CLRBITS  ((FIRE_LED1|FIRE_LED2|FIRE_LED3) << OFF_CLRBITS_SHIFT)
 
 #define LED_STACKCREATED_ON_SETBITS  (0)
 #define LED_STACKCREATED_ON_CLRBITS  ((FIRE_LED1|FIRE_LED2|FIRE_LED3) << ON_CLRBITS_SHIFT)
-#define LED_STACKCREATED_OFF_SETBITS LED_IRQSENABLED_ON_SETBITS
-#define LED_STACKCREATED_OFF_CLRBITS LED_IRQSENABLED_ON_CLRBITS
+#define LED_STACKCREATED_OFF_SETBITS ((FIRE_LED2) << OFF_SETBITS_SHIFT)
+#define LED_STACKCREATED_OFF_CLRBITS ((FIRE_LED1|FIRE_LED3) << OFF_CLRBITS_SHIFT)
 
 #define LED_FLASH_ON_SETBITS         ((FIRE_LED3) << ON_SETBITS_SHIFT)
 #define LED_FLASH_ON_CLRBITS         ((0) << ON_CLRBITS_SHIFT)
diff --git a/configs/fire-stm32v2/src/up_enc28j60.c b/configs/fire-stm32v2/src/up_enc28j60.c
index 5247f5886e6..d930d01129f 100644
--- a/configs/fire-stm32v2/src/up_enc28j60.c
+++ b/configs/fire-stm32v2/src/up_enc28j60.c
@@ -157,12 +157,12 @@ static void up_enable(FAR const struct enc_lower_s *lower)
   FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
 
   DEBUGASSERT(priv->handler);
-  (void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, true, true, true, priv->handler);
+  (void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, false, true, true, priv->handler);
 }
 
 static void up_disable(FAR const struct enc_lower_s *lower)
 {
-  (void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, true, true, true, NULL);
+  (void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, false, true, true, NULL);
 }
 
 /****************************************************************************
diff --git a/configs/fire-stm32v2/src/up_mmcsd.c b/configs/fire-stm32v2/src/up_mmcsd.c
index c0c6693d345..e06a17e89a6 100644
--- a/configs/fire-stm32v2/src/up_mmcsd.c
+++ b/configs/fire-stm32v2/src/up_mmcsd.c
@@ -47,6 +47,7 @@
 #include <nuttx/sdio.h>
 #include <nuttx/mmcsd.h>
 
+#include "stm32_sdio.h"
 #include "fire-internal.h"
 
 /****************************************************************************
diff --git a/configs/fire-stm32v2/src/up_w25.c b/configs/fire-stm32v2/src/up_w25.c
new file mode 100644
index 00000000000..a3460a1588c
--- /dev/null
+++ b/configs/fire-stm32v2/src/up_w25.c
@@ -0,0 +1,153 @@
+/****************************************************************************
+ * config/fire-stm32v2/src/up_w25.c
+ * arch/arm/src/board/up_w25.c
+ *
+ *   Copyright (C) 2012 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_STM32_SPI1
+#  include <nuttx/spi.h>
+#  include <nuttx/mtd.h>
+#  include <nuttx/fs/nxffs.h>
+#endif
+
+#include "fire-internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+/* Can't support the W25 device if it SPI1 or W25 support is not enabled */
+
+#define HAVE_W25  1
+#if !defined(CONFIG_STM32_SPI1) || !defined(CONFIG_MTD_W25)
+#  undef HAVE_W25
+#endif
+
+/* Can't support W25 features if mountpoints are disabled */
+
+#if defined(CONFIG_DISABLE_MOUNTPOINT)
+#  undef HAVE_W25
+#endif
+
+/* Can't support both FAT and NXFFS */
+
+#if defined(CONFIG_FS_FAT) && defined(CONFIG_FS_NXFFS)
+#  warning "Can't support both FAT and NXFFS -- using FAT"
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_w25initialize
+ *
+ * Description:
+ *   Initialize and register the W25 FLASH file system.
+ *
+ ****************************************************************************/
+
+int stm32_w25initialize(int minor)
+{
+#ifdef HAVE_W25
+  FAR struct spi_dev_s *spi;
+  FAR struct mtd_dev_s *mtd;
+#ifndef CONFIG_FS_NXFFS
+  uint8_t devname[12];
+#endif
+  int ret;
+
+  /* Get the SPI port */
+
+  spi = up_spiinitialize(2);
+  if (!spi)
+    {
+      fdbg("ERROR: Failed to initialize SPI port 2\n");
+      return -ENODEV;
+    }
+
+  /* Now bind the SPI interface to the SST 25 SPI FLASH driver */
+
+  mtd = sst25_initialize(spi);
+  if (!mtd)
+    {
+      fdbg("ERROR: Failed to bind SPI port 2 to the SST 25 FLASH driver\n");
+      return -ENODEV;
+    }
+
+#ifndef CONFIG_FS_NXFFS
+  /* And finally, use the FTL layer to wrap the MTD driver as a block driver */
+
+  ret = ftl_initialize(minor, mtd);
+  if (ret < 0)
+    {
+      fdbg("ERROR: Initialize the FTL layer\n");
+      return ret;
+    }
+#else
+  /* 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/w25 */
+
+  snprintf(devname, 12, "/mnt/w25%c", a + minor);
+  ret = mount(NULL, devname, "nxffs", 0, NULL);
+  if (ret < 0)
+    {
+      fdbg("ERROR: Failed to mount the NXFFS volume: %d\n", errno);
+      return ret;
+    }
+#endif
+#endif
+  return OK;
+}
diff --git a/configs/hymini-stm32v/buttons/defconfig b/configs/hymini-stm32v/buttons/defconfig
index b03997e4234..59b7b111fce 100644
--- a/configs/hymini-stm32v/buttons/defconfig
+++ b/configs/hymini-stm32v/buttons/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=49152
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/hymini-stm32v/nsh/defconfig b/configs/hymini-stm32v/nsh/defconfig
index 98849c1b836..1b0944d022c 100755
--- a/configs/hymini-stm32v/nsh/defconfig
+++ b/configs/hymini-stm32v/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=49152
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/hymini-stm32v/nsh2/defconfig b/configs/hymini-stm32v/nsh2/defconfig
index 95e7f8b9534..fbd9d23b36f 100644
--- a/configs/hymini-stm32v/nsh2/defconfig
+++ b/configs/hymini-stm32v/nsh2/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=49152
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/hymini-stm32v/nx/defconfig b/configs/hymini-stm32v/nx/defconfig
index d4f468d3270..645feac1b51 100644
--- a/configs/hymini-stm32v/nx/defconfig
+++ b/configs/hymini-stm32v/nx/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=49152
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/hymini-stm32v/nxlines/defconfig b/configs/hymini-stm32v/nxlines/defconfig
index 01da0ea84c2..689b17376ab 100644
--- a/configs/hymini-stm32v/nxlines/defconfig
+++ b/configs/hymini-stm32v/nxlines/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=49152
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/hymini-stm32v/usbserial/defconfig b/configs/hymini-stm32v/usbserial/defconfig
index 15f0695cfbd..379e51a5ef2 100755
--- a/configs/hymini-stm32v/usbserial/defconfig
+++ b/configs/hymini-stm32v/usbserial/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=49152
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/hymini-stm32v/usbstorage/defconfig b/configs/hymini-stm32v/usbstorage/defconfig
index 8e5cc1b53eb..b56f627544a 100755
--- a/configs/hymini-stm32v/usbstorage/defconfig
+++ b/configs/hymini-stm32v/usbstorage/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=49152
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/kwikstik-k40/ostest/defconfig b/configs/kwikstik-k40/ostest/defconfig
index 4d904733988..29bed1244fe 100755
--- a/configs/kwikstik-k40/ostest/defconfig
+++ b/configs/kwikstik-k40/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=9535
 CONFIG_DRAM_START=0x1fff8000
 CONFIG_DRAM_SIZE= 0x00010000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lincoln60/nsh/defconfig b/configs/lincoln60/nsh/defconfig
index 035c8f07417..a120e2c748b 100644
--- a/configs/lincoln60/nsh/defconfig
+++ b/configs/lincoln60/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=7982
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lincoln60/ostest/defconfig b/configs/lincoln60/ostest/defconfig
index 90f980a1372..6c74a9f5418 100644
--- a/configs/lincoln60/ostest/defconfig
+++ b/configs/lincoln60/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lm3s6432-s2e/nsh/defconfig b/configs/lm3s6432-s2e/nsh/defconfig
index a5f2466c200..b4dd453ac6a 100644
--- a/configs/lm3s6432-s2e/nsh/defconfig
+++ b/configs/lm3s6432-s2e/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lm3s6432-s2e/ostest/defconfig b/configs/lm3s6432-s2e/ostest/defconfig
index bc9ce20f057..e04f3da8d5a 100644
--- a/configs/lm3s6432-s2e/ostest/defconfig
+++ b/configs/lm3s6432-s2e/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lm3s6965-ek/nsh/defconfig b/configs/lm3s6965-ek/nsh/defconfig
index 145c992c9af..bfad857f081 100755
--- a/configs/lm3s6965-ek/nsh/defconfig
+++ b/configs/lm3s6965-ek/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lm3s6965-ek/nx/defconfig b/configs/lm3s6965-ek/nx/defconfig
index c6340c76b54..4bc7d73a606 100755
--- a/configs/lm3s6965-ek/nx/defconfig
+++ b/configs/lm3s6965-ek/nx/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lm3s6965-ek/ostest/defconfig b/configs/lm3s6965-ek/ostest/defconfig
index 1ef498dd8e0..8aeef4a0020 100755
--- a/configs/lm3s6965-ek/ostest/defconfig
+++ b/configs/lm3s6965-ek/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lm3s8962-ek/nsh/defconfig b/configs/lm3s8962-ek/nsh/defconfig
index 439165c904e..8c3d834f5d3 100755
--- a/configs/lm3s8962-ek/nsh/defconfig
+++ b/configs/lm3s8962-ek/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lm3s8962-ek/nx/defconfig b/configs/lm3s8962-ek/nx/defconfig
index 823d62ae958..49bbe067533 100755
--- a/configs/lm3s8962-ek/nx/defconfig
+++ b/configs/lm3s8962-ek/nx/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lm3s8962-ek/ostest/defconfig b/configs/lm3s8962-ek/ostest/defconfig
index 291f4e1f268..adb806b9c73 100755
--- a/configs/lm3s8962-ek/ostest/defconfig
+++ b/configs/lm3s8962-ek/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4531
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_CALIBRATION=n
diff --git a/configs/lpc4330-xplorer/nsh/defconfig b/configs/lpc4330-xplorer/nsh/defconfig
index b0a1f736f2f..406f6f2ba09 100644
--- a/configs/lpc4330-xplorer/nsh/defconfig
+++ b/configs/lpc4330-xplorer/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=73728
 CONFIG_DRAM_START=0x10080000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lpc4330-xplorer/ostest/defconfig b/configs/lpc4330-xplorer/ostest/defconfig
index 267d46af5cc..560e3327b07 100644
--- a/configs/lpc4330-xplorer/ostest/defconfig
+++ b/configs/lpc4330-xplorer/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_SIZE=73728
 CONFIG_DRAM_START=0x10080000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lpcxpresso-lpc1768/dhcpd/defconfig b/configs/lpcxpresso-lpc1768/dhcpd/defconfig
index c2d7fc336ea..0b7f1c153f7 100755
--- a/configs/lpcxpresso-lpc1768/dhcpd/defconfig
+++ b/configs/lpcxpresso-lpc1768/dhcpd/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8079
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lpcxpresso-lpc1768/nsh/defconfig b/configs/lpcxpresso-lpc1768/nsh/defconfig
index 425c4134e3d..cb78f88cc64 100755
--- a/configs/lpcxpresso-lpc1768/nsh/defconfig
+++ b/configs/lpcxpresso-lpc1768/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8079
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lpcxpresso-lpc1768/nx/defconfig b/configs/lpcxpresso-lpc1768/nx/defconfig
index c0289a08f93..54c6828a825 100755
--- a/configs/lpcxpresso-lpc1768/nx/defconfig
+++ b/configs/lpcxpresso-lpc1768/nx/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8079
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lpcxpresso-lpc1768/ostest/defconfig b/configs/lpcxpresso-lpc1768/ostest/defconfig
index 0c5104ca742..a808333ff5f 100755
--- a/configs/lpcxpresso-lpc1768/ostest/defconfig
+++ b/configs/lpcxpresso-lpc1768/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8079
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lpcxpresso-lpc1768/thttpd/defconfig b/configs/lpcxpresso-lpc1768/thttpd/defconfig
index 80ff88e8be1..227bbdebdfe 100755
--- a/configs/lpcxpresso-lpc1768/thttpd/defconfig
+++ b/configs/lpcxpresso-lpc1768/thttpd/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8079
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/lpcxpresso-lpc1768/usbstorage/defconfig b/configs/lpcxpresso-lpc1768/usbstorage/defconfig
index 1b1c97f593e..4aca6768cdf 100755
--- a/configs/lpcxpresso-lpc1768/usbstorage/defconfig
+++ b/configs/lpcxpresso-lpc1768/usbstorage/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8079
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/mbed/hidkbd/defconfig b/configs/mbed/hidkbd/defconfig
index e65a2fd186b..edcf8e181dd 100644
--- a/configs/mbed/hidkbd/defconfig
+++ b/configs/mbed/hidkbd/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=7982
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/mbed/nsh/defconfig b/configs/mbed/nsh/defconfig
index a073c8886a8..c1a35e4b1ac 100755
--- a/configs/mbed/nsh/defconfig
+++ b/configs/mbed/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=7982
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/micropendous3/hello/defconfig b/configs/micropendous3/hello/defconfig
index 091e9147ef1..4563a12e3ab 100644
--- a/configs/micropendous3/hello/defconfig
+++ b/configs/micropendous3/hello/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=4096
 CONFIG_DRAM_START=0x800100
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=n
diff --git a/configs/mirtoo/nsh/defconfig b/configs/mirtoo/nsh/defconfig
index bcc18dc3c8c..c210c134ba9 100644
--- a/configs/mirtoo/nsh/defconfig
+++ b/configs/mirtoo/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/mirtoo/nxffs/defconfig b/configs/mirtoo/nxffs/defconfig
index d7454bda60c..1dbb2c02c5f 100644
--- a/configs/mirtoo/nxffs/defconfig
+++ b/configs/mirtoo/nxffs/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/mirtoo/ostest/defconfig b/configs/mirtoo/ostest/defconfig
index fdbc4b56128..702b01bc8b9 100644
--- a/configs/mirtoo/ostest/defconfig
+++ b/configs/mirtoo/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/mx1ads/ostest/defconfig b/configs/mx1ads/ostest/defconfig
index f20216aa81a..c699aab5104 100644
--- a/configs/mx1ads/ostest/defconfig
+++ b/configs/mx1ads/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=16777216
 CONFIG_DRAM_START=0x08000000
 CONFIG_DRAM_VSTART=0x00000000
 CONFIG_DRAM_NUTTXENTRY=0x01004000
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 
 #
diff --git a/configs/ne64badge/ostest/defconfig b/configs/ne64badge/ostest/defconfig
index 4f480675d16..59f52f66158 100755
--- a/configs/ne64badge/ostest/defconfig
+++ b/configs/ne64badge/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
diff --git a/configs/nucleus2g/nsh/defconfig b/configs/nucleus2g/nsh/defconfig
index 6dcef15a7a4..9397820cde0 100755
--- a/configs/nucleus2g/nsh/defconfig
+++ b/configs/nucleus2g/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=7982
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/nucleus2g/ostest/defconfig b/configs/nucleus2g/ostest/defconfig
index 622db2a5fda..848fafdbaa5 100755
--- a/configs/nucleus2g/ostest/defconfig
+++ b/configs/nucleus2g/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=7982
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/nucleus2g/usbserial/defconfig b/configs/nucleus2g/usbserial/defconfig
index 36b1ff47b5c..d0decf903fb 100755
--- a/configs/nucleus2g/usbserial/defconfig
+++ b/configs/nucleus2g/usbserial/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=7982
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/nucleus2g/usbstorage/defconfig b/configs/nucleus2g/usbstorage/defconfig
index 5dfe4745731..ec79e8fd339 100755
--- a/configs/nucleus2g/usbstorage/defconfig
+++ b/configs/nucleus2g/usbstorage/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=7982
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/ftpc/defconfig b/configs/olimex-lpc1766stk/ftpc/defconfig
index c34f0b9996e..3498195b117 100755
--- a/configs/olimex-lpc1766stk/ftpc/defconfig
+++ b/configs/olimex-lpc1766stk/ftpc/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/hidkbd/defconfig b/configs/olimex-lpc1766stk/hidkbd/defconfig
index 10dc25101a6..9acf60d9d77 100755
--- a/configs/olimex-lpc1766stk/hidkbd/defconfig
+++ b/configs/olimex-lpc1766stk/hidkbd/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/nettest/defconfig b/configs/olimex-lpc1766stk/nettest/defconfig
index 6ac19b8e744..040b3ecff6c 100755
--- a/configs/olimex-lpc1766stk/nettest/defconfig
+++ b/configs/olimex-lpc1766stk/nettest/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/nsh/defconfig b/configs/olimex-lpc1766stk/nsh/defconfig
index 37e2b9bf081..1324ca5d47a 100755
--- a/configs/olimex-lpc1766stk/nsh/defconfig
+++ b/configs/olimex-lpc1766stk/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/nx/defconfig b/configs/olimex-lpc1766stk/nx/defconfig
index a3a912b2aa3..de5763c0e96 100755
--- a/configs/olimex-lpc1766stk/nx/defconfig
+++ b/configs/olimex-lpc1766stk/nx/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/ostest/defconfig b/configs/olimex-lpc1766stk/ostest/defconfig
index a01564222f2..f36f911e60c 100755
--- a/configs/olimex-lpc1766stk/ostest/defconfig
+++ b/configs/olimex-lpc1766stk/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/slip-httpd/defconfig b/configs/olimex-lpc1766stk/slip-httpd/defconfig
index f2074597c2e..a30c2b9a6c4 100755
--- a/configs/olimex-lpc1766stk/slip-httpd/defconfig
+++ b/configs/olimex-lpc1766stk/slip-httpd/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/thttpd/defconfig b/configs/olimex-lpc1766stk/thttpd/defconfig
index f6991802555..1c287cfca95 100755
--- a/configs/olimex-lpc1766stk/thttpd/defconfig
+++ b/configs/olimex-lpc1766stk/thttpd/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/usbserial/defconfig b/configs/olimex-lpc1766stk/usbserial/defconfig
index 506ef91d765..4ead7ffebea 100755
--- a/configs/olimex-lpc1766stk/usbserial/defconfig
+++ b/configs/olimex-lpc1766stk/usbserial/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/usbstorage/defconfig b/configs/olimex-lpc1766stk/usbstorage/defconfig
index eaf51a8f411..53cf8001c5f 100755
--- a/configs/olimex-lpc1766stk/usbstorage/defconfig
+++ b/configs/olimex-lpc1766stk/usbstorage/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc1766stk/wlan/defconfig b/configs/olimex-lpc1766stk/wlan/defconfig
index 4b7b2942dbd..0df5f2cf72b 100755
--- a/configs/olimex-lpc1766stk/wlan/defconfig
+++ b/configs/olimex-lpc1766stk/wlan/defconfig
@@ -47,7 +47,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8111
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x10000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/olimex-lpc2378/nsh/defconfig b/configs/olimex-lpc2378/nsh/defconfig
index 98cd2b5fe12..7311d0c20f0 100755
--- a/configs/olimex-lpc2378/nsh/defconfig
+++ b/configs/olimex-lpc2378/nsh/defconfig
@@ -52,7 +52,7 @@ CONFIG_BOARD_LOOPSPERMSEC=3270
 CONFIG_ARCH_LEDS=y
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x40000000
-CONFIG_ARCH_INTERRUPTSTACK=
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 
 # Identify toolchain and linker options
diff --git a/configs/olimex-lpc2378/ostest/defconfig b/configs/olimex-lpc2378/ostest/defconfig
index df6c0e1cb0b..b96aadd87fc 100755
--- a/configs/olimex-lpc2378/ostest/defconfig
+++ b/configs/olimex-lpc2378/ostest/defconfig
@@ -52,7 +52,7 @@ CONFIG_BOARD_LOOPSPERMSEC=3270
 CONFIG_ARCH_LEDS=y
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x40000000
-CONFIG_ARCH_INTERRUPTSTACK=
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 
 # Identify toolchain and linker options
diff --git a/configs/olimex-stm32-p107/nsh/defconfig b/configs/olimex-stm32-p107/nsh/defconfig
index 91e757cf1ba..5c38a49efa0 100644
--- a/configs/olimex-stm32-p107/nsh/defconfig
+++ b/configs/olimex-stm32-p107/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_SIZE=65536
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=n
diff --git a/configs/olimex-stm32-p107/ostest/defconfig b/configs/olimex-stm32-p107/ostest/defconfig
index 0a8d66455d2..3710ee95b7d 100644
--- a/configs/olimex-stm32-p107/ostest/defconfig
+++ b/configs/olimex-stm32-p107/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_SIZE=65536
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=n
diff --git a/configs/olimex-strp711/nettest/defconfig b/configs/olimex-strp711/nettest/defconfig
index f69d3f8cb46..e8455ab9417 100755
--- a/configs/olimex-strp711/nettest/defconfig
+++ b/configs/olimex-strp711/nettest/defconfig
@@ -223,8 +223,8 @@ CONFIG_NUNGET_CHARS=2
 CONFIG_PREALLOC_MQ_MSGS=4
 CONFIG_MQ_MAXMSGSIZE=32
 CONFIG_MAX_WDOGPARMS=2
-CONFIG_PREALLOC_WDOGS=4
-CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_WDOGS=16
+CONFIG_PREALLOC_TIMERS=8
 
 #
 # Filesystem configuration
@@ -235,6 +235,7 @@ CONFIG_FS_ROMFS=n
 #
 # ENC28J60 configuration
 #
+CONFIG_NETDEVICES=y
 CONFIG_ENC28J60=y
 #CONFIG_ENC28J60_SPIMODE
 CONFIG_ENC28J60_FREQUENCY=20000000
@@ -252,10 +253,11 @@ CONFIG_MMCSD_READONLY=n
 # TCP/IP and UDP support via uIP
 #
 CONFIG_NET=y
+CONFIG_NET_NOINTS=y
 CONFIG_NET_IPv6=n
-CONFIG_NSOCKET_DESCRIPTORS=8
+CONFIG_NSOCKET_DESCRIPTORS=16
 CONFIG_NET_SOCKOPTS=y
-CONFIG_NET_BUFSIZE=420
+CONFIG_NET_BUFSIZE=562
 CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
@@ -365,7 +367,7 @@ CONFIG_NSH_TELNET=n
 CONFIG_NSH_ARCHINIT=n
 CONFIG_NSH_IOBUFFER_SIZE=512
 CONFIG_NSH_DHCPC=n
-CONFIG_NSH_NOMAC=n
+CONFIG_NSH_NOMAC=y
 CONFIG_NSH_IPADDR=0x0a000002
 CONFIG_NSH_DRIPADDR=0x0a000001
 CONFIG_NSH_NETMASK=0xffffff00
diff --git a/configs/pcblogic-pic32mx/nsh/defconfig b/configs/pcblogic-pic32mx/nsh/defconfig
index 74242863f00..09febe7b1dd 100644
--- a/configs/pcblogic-pic32mx/nsh/defconfig
+++ b/configs/pcblogic-pic32mx/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=n
diff --git a/configs/pcblogic-pic32mx/ostest/defconfig b/configs/pcblogic-pic32mx/ostest/defconfig
index d012b4a2483..dc76a54bb46 100644
--- a/configs/pcblogic-pic32mx/ostest/defconfig
+++ b/configs/pcblogic-pic32mx/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=n
diff --git a/configs/pic32-starterkit/nsh/defconfig b/configs/pic32-starterkit/nsh/defconfig
index 2f0248f41cf..5c19d2e4395 100644
--- a/configs/pic32-starterkit/nsh/defconfig
+++ b/configs/pic32-starterkit/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/pic32-starterkit/nsh2/defconfig b/configs/pic32-starterkit/nsh2/defconfig
index be8ef53a028..8d9bd8e2711 100644
--- a/configs/pic32-starterkit/nsh2/defconfig
+++ b/configs/pic32-starterkit/nsh2/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/pic32-starterkit/ostest/defconfig b/configs/pic32-starterkit/ostest/defconfig
index bcd26cce540..687b63970af 100644
--- a/configs/pic32-starterkit/ostest/defconfig
+++ b/configs/pic32-starterkit/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/pic32mx7mmb/nsh/defconfig b/configs/pic32mx7mmb/nsh/defconfig
index 53ad041da23..bb953169430 100644
--- a/configs/pic32mx7mmb/nsh/defconfig
+++ b/configs/pic32mx7mmb/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/pic32mx7mmb/ostest/defconfig b/configs/pic32mx7mmb/ostest/defconfig
index ac6b9a82da8..a14fa99480e 100644
--- a/configs/pic32mx7mmb/ostest/defconfig
+++ b/configs/pic32mx7mmb/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/sam3u-ek/knsh/defconfig b/configs/sam3u-ek/knsh/defconfig
index 06b93cc13c7..82616f338a2 100755
--- a/configs/sam3u-ek/knsh/defconfig
+++ b/configs/sam3u-ek/knsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4768
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/sam3u-ek/nsh/defconfig b/configs/sam3u-ek/nsh/defconfig
index a336861f589..56071d22304 100755
--- a/configs/sam3u-ek/nsh/defconfig
+++ b/configs/sam3u-ek/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4768
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/sam3u-ek/nx/defconfig b/configs/sam3u-ek/nx/defconfig
index 5bf51a0fbbd..943c47cfcc3 100755
--- a/configs/sam3u-ek/nx/defconfig
+++ b/configs/sam3u-ek/nx/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4768
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/sam3u-ek/ostest/defconfig b/configs/sam3u-ek/ostest/defconfig
index 2757531f02f..098fc3600a4 100755
--- a/configs/sam3u-ek/ostest/defconfig
+++ b/configs/sam3u-ek/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4768
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/sam3u-ek/touchscreen/defconfig b/configs/sam3u-ek/touchscreen/defconfig
index e70b710ac5e..2165dec4bc3 100755
--- a/configs/sam3u-ek/touchscreen/defconfig
+++ b/configs/sam3u-ek/touchscreen/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4768
 CONFIG_DRAM_SIZE=32768
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/shenzhou/src/Makefile b/configs/shenzhou/src/Makefile
index 11e36f136e7..50ddaa5cad6 100644
--- a/configs/shenzhou/src/Makefile
+++ b/configs/shenzhou/src/Makefile
@@ -68,6 +68,10 @@ ifeq ($(CONFIG_NSH_ARCHINIT),y)
 CSRCS		+= up_nsh.c
 endif
 
+ifeq ($(CONFIG_MTD_W25),y)
+CSRCS		+= up_w25.c
+endif
+
 ifeq ($(CONFIG_USBMSC),y)
 CSRCS		+= up_usbmsc.c
 endif
diff --git a/configs/shenzhou/src/shenzhou-internal.h b/configs/shenzhou/src/shenzhou-internal.h
index 6f9683a56f3..19460bc998f 100644
--- a/configs/shenzhou/src/shenzhou-internal.h
+++ b/configs/shenzhou/src/shenzhou-internal.h
@@ -270,5 +270,17 @@ int stm32_usbhost_initialize(void);
 
 int stm32_sdinitialize(int minor);
 
+/****************************************************************************
+ * Name: stm32_w25initialize
+ *
+ * Description:
+ *   Initialize and register the W25 FLASH file system.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_MTD_W25
+int stm32_w25initialize(int minor);
+#endif
+
 #endif /* __ASSEMBLY__ */
 #endif /* __CONFIGS_SHENZHOUL_SRC_SHENZHOU_INTERNAL_H */
diff --git a/configs/shenzhou/src/up_w25.c b/configs/shenzhou/src/up_w25.c
new file mode 100644
index 00000000000..aa547f6fe46
--- /dev/null
+++ b/configs/shenzhou/src/up_w25.c
@@ -0,0 +1,153 @@
+/****************************************************************************
+ * config/shenzhou/src/up_w25.c
+ * arch/arm/src/board/up_w25.c
+ *
+ *   Copyright (C) 2012 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_STM32_SPI1
+#  include <nuttx/spi.h>
+#  include <nuttx/mtd.h>
+#  include <nuttx/fs/nxffs.h>
+#endif
+
+#include "shenzhou-internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+/* Can't support the W25 device if it SPI1 or W25 support is not enabled */
+
+#define HAVE_W25  1
+#if !defined(CONFIG_STM32_SPI1) || !defined(CONFIG_MTD_W25)
+#  undef HAVE_W25
+#endif
+
+/* Can't support W25 features if mountpoints are disabled */
+
+#if defined(CONFIG_DISABLE_MOUNTPOINT)
+#  undef HAVE_W25
+#endif
+
+/* Can't support both FAT and NXFFS */
+
+#if defined(CONFIG_FS_FAT) && defined(CONFIG_FS_NXFFS)
+#  warning "Can't support both FAT and NXFFS -- using FAT"
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_w25initialize
+ *
+ * Description:
+ *   Initialize and register the W25 FLASH file system.
+ *
+ ****************************************************************************/
+
+int stm32_w25initialize(int minor)
+{
+#ifdef HAVE_W25
+  FAR struct spi_dev_s *spi;
+  FAR struct mtd_dev_s *mtd;
+#ifndef CONFIG_FS_NXFFS
+  uint8_t devname[12];
+#endif
+  int ret;
+
+  /* Get the SPI port */
+
+  spi = up_spiinitialize(2);
+  if (!spi)
+    {
+      fdbg("ERROR: Failed to initialize SPI port 2\n");
+      return -ENODEV;
+    }
+
+  /* Now bind the SPI interface to the SST 25 SPI FLASH driver */
+
+  mtd = sst25_initialize(spi);
+  if (!mtd)
+    {
+      fdbg("ERROR: Failed to bind SPI port 2 to the SST 25 FLASH driver\n");
+      return -ENODEV;
+    }
+
+#ifndef CONFIG_FS_NXFFS
+  /* And finally, use the FTL layer to wrap the MTD driver as a block driver */
+
+  ret = ftl_initialize(minor, mtd);
+  if (ret < 0)
+    {
+      fdbg("ERROR: Initialize the FTL layer\n");
+      return ret;
+    }
+#else
+  /* 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/w25 */
+
+  snprintf(devname, 12, "/mnt/w25%c", a + minor);
+  ret = mount(NULL, devname, "nxffs", 0, NULL);
+  if (ret < 0)
+    {
+      fdbg("ERROR: Failed to mount the NXFFS volume: %d\n", errno);
+      return ret;
+    }
+#endif
+#endif
+  return OK;
+}
diff --git a/configs/stm3210e-eval/RIDE/defconfig b/configs/stm3210e-eval/RIDE/defconfig
index dd0a89eccae..a5b60fe4e33 100755
--- a/configs/stm3210e-eval/RIDE/defconfig
+++ b/configs/stm3210e-eval/RIDE/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/buttons/defconfig b/configs/stm3210e-eval/buttons/defconfig
index b355f4067c4..fbfac0dc649 100644
--- a/configs/stm3210e-eval/buttons/defconfig
+++ b/configs/stm3210e-eval/buttons/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/composite/defconfig b/configs/stm3210e-eval/composite/defconfig
index 2a76e5caf36..84ed18494a7 100755
--- a/configs/stm3210e-eval/composite/defconfig
+++ b/configs/stm3210e-eval/composite/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/nsh/defconfig b/configs/stm3210e-eval/nsh/defconfig
index 886b2aa0785..27d26ff7313 100755
--- a/configs/stm3210e-eval/nsh/defconfig
+++ b/configs/stm3210e-eval/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/nsh2/defconfig b/configs/stm3210e-eval/nsh2/defconfig
index 3c0fb3d7036..d4fa891fb35 100644
--- a/configs/stm3210e-eval/nsh2/defconfig
+++ b/configs/stm3210e-eval/nsh2/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/nx/defconfig b/configs/stm3210e-eval/nx/defconfig
index 79a3fe7f9ac..cab297583b6 100644
--- a/configs/stm3210e-eval/nx/defconfig
+++ b/configs/stm3210e-eval/nx/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/nxconsole/defconfig b/configs/stm3210e-eval/nxconsole/defconfig
index 243e4ad0819..35ba0dcc1df 100644
--- a/configs/stm3210e-eval/nxconsole/defconfig
+++ b/configs/stm3210e-eval/nxconsole/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/nxlines/defconfig b/configs/stm3210e-eval/nxlines/defconfig
index bd2968e679f..b81f4127ca3 100644
--- a/configs/stm3210e-eval/nxlines/defconfig
+++ b/configs/stm3210e-eval/nxlines/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/nxtext/defconfig b/configs/stm3210e-eval/nxtext/defconfig
index 5d4b1f061be..22dd209a928 100644
--- a/configs/stm3210e-eval/nxtext/defconfig
+++ b/configs/stm3210e-eval/nxtext/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/ostest/defconfig b/configs/stm3210e-eval/ostest/defconfig
index cabd5fa273e..7a2e5b528ca 100755
--- a/configs/stm3210e-eval/ostest/defconfig
+++ b/configs/stm3210e-eval/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/pm/defconfig b/configs/stm3210e-eval/pm/defconfig
index 73f7ae52ae8..6ca7cda871b 100644
--- a/configs/stm3210e-eval/pm/defconfig
+++ b/configs/stm3210e-eval/pm/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/usbserial/defconfig b/configs/stm3210e-eval/usbserial/defconfig
index b3d182bde65..99a5e257280 100755
--- a/configs/stm3210e-eval/usbserial/defconfig
+++ b/configs/stm3210e-eval/usbserial/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3210e-eval/usbstorage/defconfig b/configs/stm3210e-eval/usbstorage/defconfig
index 3a2a2d571dc..812226ee6d5 100755
--- a/configs/stm3210e-eval/usbstorage/defconfig
+++ b/configs/stm3210e-eval/usbstorage/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3220g-eval/dhcpd/defconfig b/configs/stm3220g-eval/dhcpd/defconfig
index 3abf0bdab00..3958aa80157 100644
--- a/configs/stm3220g-eval/dhcpd/defconfig
+++ b/configs/stm3220g-eval/dhcpd/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=10926
 CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3220g-eval/nettest/defconfig b/configs/stm3220g-eval/nettest/defconfig
index 47a560f4fad..0b19651cd43 100644
--- a/configs/stm3220g-eval/nettest/defconfig
+++ b/configs/stm3220g-eval/nettest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=10926
 CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3220g-eval/nsh/defconfig b/configs/stm3220g-eval/nsh/defconfig
index 6e019875d55..c2cf20a5cab 100644
--- a/configs/stm3220g-eval/nsh/defconfig
+++ b/configs/stm3220g-eval/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=10926
 CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3220g-eval/nsh2/defconfig b/configs/stm3220g-eval/nsh2/defconfig
index 980fc1930b6..de7e59bca28 100644
--- a/configs/stm3220g-eval/nsh2/defconfig
+++ b/configs/stm3220g-eval/nsh2/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=10926
 CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3220g-eval/nxwm/defconfig b/configs/stm3220g-eval/nxwm/defconfig
index 4ce770bf16c..0182a15d6b1 100644
--- a/configs/stm3220g-eval/nxwm/defconfig
+++ b/configs/stm3220g-eval/nxwm/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=10926
 CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3220g-eval/ostest/defconfig b/configs/stm3220g-eval/ostest/defconfig
index b2d36c9cd94..46e82d6e1a1 100644
--- a/configs/stm3220g-eval/ostest/defconfig
+++ b/configs/stm3220g-eval/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=10926
 CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3220g-eval/telnetd/defconfig b/configs/stm3220g-eval/telnetd/defconfig
index 024b4d1a5f8..823f455c1cc 100644
--- a/configs/stm3220g-eval/telnetd/defconfig
+++ b/configs/stm3220g-eval/telnetd/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=10926
 CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/dhcpd/defconfig b/configs/stm3240g-eval/dhcpd/defconfig
index 83678b12a25..09bab66b9ce 100644
--- a/configs/stm3240g-eval/dhcpd/defconfig
+++ b/configs/stm3240g-eval/dhcpd/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/nettest/defconfig b/configs/stm3240g-eval/nettest/defconfig
index 3446e8c3514..2560310da4f 100644
--- a/configs/stm3240g-eval/nettest/defconfig
+++ b/configs/stm3240g-eval/nettest/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/nsh/defconfig b/configs/stm3240g-eval/nsh/defconfig
index 03f4d3c0fb1..dad3b385437 100644
--- a/configs/stm3240g-eval/nsh/defconfig
+++ b/configs/stm3240g-eval/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/nsh2/defconfig b/configs/stm3240g-eval/nsh2/defconfig
index d0e628cc48e..86504cc8354 100644
--- a/configs/stm3240g-eval/nsh2/defconfig
+++ b/configs/stm3240g-eval/nsh2/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/nxconsole/defconfig b/configs/stm3240g-eval/nxconsole/defconfig
index dc3ba7ced64..70f7465b000 100644
--- a/configs/stm3240g-eval/nxconsole/defconfig
+++ b/configs/stm3240g-eval/nxconsole/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/nxwm/defconfig b/configs/stm3240g-eval/nxwm/defconfig
index 2ace5113d87..ec98c273b59 100644
--- a/configs/stm3240g-eval/nxwm/defconfig
+++ b/configs/stm3240g-eval/nxwm/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/ostest/defconfig b/configs/stm3240g-eval/ostest/defconfig
index 449a143a5a6..33bb63d5daf 100644
--- a/configs/stm3240g-eval/ostest/defconfig
+++ b/configs/stm3240g-eval/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/telnetd/defconfig b/configs/stm3240g-eval/telnetd/defconfig
index 67762012c1d..5609f0d18db 100644
--- a/configs/stm3240g-eval/telnetd/defconfig
+++ b/configs/stm3240g-eval/telnetd/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm3240g-eval/webserver/defconfig b/configs/stm3240g-eval/webserver/defconfig
index 07d8cfa7be6..0bde916e47a 100644
--- a/configs/stm3240g-eval/webserver/defconfig
+++ b/configs/stm3240g-eval/webserver/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm32f4discovery/nsh/defconfig b/configs/stm32f4discovery/nsh/defconfig
index 8e1861d7316..a5c50359108 100644
--- a/configs/stm32f4discovery/nsh/defconfig
+++ b/configs/stm32f4discovery/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm32f4discovery/nxlines/defconfig b/configs/stm32f4discovery/nxlines/defconfig
index 45d819e8a27..c6bd3f5df63 100644
--- a/configs/stm32f4discovery/nxlines/defconfig
+++ b/configs/stm32f4discovery/nxlines/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm32f4discovery/ostest/defconfig b/configs/stm32f4discovery/ostest/defconfig
index 5640cebd118..39675a166a1 100644
--- a/configs/stm32f4discovery/ostest/defconfig
+++ b/configs/stm32f4discovery/ostest/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/stm32f4discovery/pm/defconfig b/configs/stm32f4discovery/pm/defconfig
index fb03c477e70..8960253f908 100644
--- a/configs/stm32f4discovery/pm/defconfig
+++ b/configs/stm32f4discovery/pm/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=196608
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_ARCH_FPU=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=n
diff --git a/configs/sure-pic32mx/nsh/defconfig b/configs/sure-pic32mx/nsh/defconfig
index ded591f3ea7..ffd95e4ac63 100644
--- a/configs/sure-pic32mx/nsh/defconfig
+++ b/configs/sure-pic32mx/nsh/defconfig
@@ -50,7 +50,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/sure-pic32mx/ostest/defconfig b/configs/sure-pic32mx/ostest/defconfig
index d6e3f894fce..731529df87b 100644
--- a/configs/sure-pic32mx/ostest/defconfig
+++ b/configs/sure-pic32mx/ostest/defconfig
@@ -50,7 +50,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/sure-pic32mx/usbnsh/defconfig b/configs/sure-pic32mx/usbnsh/defconfig
index e1873b4c751..0abcd72b863 100644
--- a/configs/sure-pic32mx/usbnsh/defconfig
+++ b/configs/sure-pic32mx/usbnsh/defconfig
@@ -50,7 +50,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/teensy/hello/defconfig b/configs/teensy/hello/defconfig
index 29c7194e3a5..dee8b264e9a 100644
--- a/configs/teensy/hello/defconfig
+++ b/configs/teensy/hello/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=8192
 CONFIG_DRAM_START=0x800100
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/teensy/nsh/defconfig b/configs/teensy/nsh/defconfig
index 4f13b935141..32b7e5a41fa 100755
--- a/configs/teensy/nsh/defconfig
+++ b/configs/teensy/nsh/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=8192
 CONFIG_DRAM_START=0x800100
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/teensy/usbstorage/defconfig b/configs/teensy/usbstorage/defconfig
index a0f90666539..68d54b87044 100755
--- a/configs/teensy/usbstorage/defconfig
+++ b/configs/teensy/usbstorage/defconfig
@@ -47,7 +47,7 @@ CONFIG_DRAM_SIZE=8192
 CONFIG_DRAM_START=0x800100
 CONFIG_ARCH_NOINTC=y
 CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/twr-k60n512/nsh/defconfig b/configs/twr-k60n512/nsh/defconfig
index 0f91b67214b..47aecfea609 100644
--- a/configs/twr-k60n512/nsh/defconfig
+++ b/configs/twr-k60n512/nsh/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=9535
 CONFIG_DRAM_START=0x1fff0000
 CONFIG_DRAM_SIZE=131072
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/twr-k60n512/ostest/defconfig b/configs/twr-k60n512/ostest/defconfig
index 461b795f1e0..984ff5cff88 100644
--- a/configs/twr-k60n512/ostest/defconfig
+++ b/configs/twr-k60n512/ostest/defconfig
@@ -46,7 +46,7 @@ CONFIG_BOARD_LOOPSPERMSEC=9535
 CONFIG_DRAM_START=0x1fff0000
 CONFIG_DRAM_SIZE=131072
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ubw32/nsh/defconfig b/configs/ubw32/nsh/defconfig
index 174d7c9a8f5..cfc0dad304d 100644
--- a/configs/ubw32/nsh/defconfig
+++ b/configs/ubw32/nsh/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/ubw32/ostest/defconfig b/configs/ubw32/ostest/defconfig
index 2a51efc25b4..0fc2984bc6f 100644
--- a/configs/ubw32/ostest/defconfig
+++ b/configs/ubw32/ostest/defconfig
@@ -48,7 +48,7 @@ CONFIG_DRAM_START=0xa0000000
 CONFIG_ARCH_NOINTC=n
 CONFIG_ARCH_VECNOTIRQ=y
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y
diff --git a/configs/vsn/nsh/defconfig b/configs/vsn/nsh/defconfig
index 48af2e07cc8..c55fae0f3e4 100755
--- a/configs/vsn/nsh/defconfig
+++ b/configs/vsn/nsh/defconfig
@@ -49,7 +49,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=65536
 CONFIG_DRAM_START=0x20000000
 CONFIG_ARCH_IRQPRIO=y
-CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
 CONFIG_ARCH_LEDS=y