diff --git a/boards/arm/stm32f4/stm32f4discovery/configs/toybox/defconfig b/boards/arm/stm32f4/stm32f4discovery/configs/toybox/defconfig
new file mode 100644
index 00000000000..d8fad21601d
--- /dev/null
+++ b/boards/arm/stm32f4/stm32f4discovery/configs/toybox/defconfig
@@ -0,0 +1,53 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_FPU is not set
+CONFIG_ALLOW_MIT_COMPONENTS=y
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="stm32f4discovery"
+CONFIG_ARCH_BOARD_STM32F4_DISCOVERY=y
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_CHIP="stm32f4"
+CONFIG_ARCH_CHIP_STM32=y
+CONFIG_ARCH_CHIP_STM32F407VG=y
+CONFIG_ARCH_CHIP_STM32F4=y
+CONFIG_ARCH_SETJMP_H=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_EXAMPLES_HELLO=y
+CONFIG_FS_NOTIFY=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_HOST_WINDOWS=y
+CONFIG_INIT_ENTRYPOINT="toybox_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_EXECFUNCS=y
+CONFIG_LIBC_LOCALE=y
+CONFIG_LIBC_LOCALTIME=y
+CONFIG_LINE_MAX=64
+CONFIG_MM_REGIONS=2
+CONFIG_PIPES=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PSEUDOFS_SOFTLINKS=y
+CONFIG_RAM_SIZE=114688
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_HAVE_PARENT=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_STM32_JTAG_SW_ENABLE=y
+CONFIG_STM32_PWR=y
+CONFIG_STM32_SPI1=y
+CONFIG_STM32_USART2=y
+CONFIG_SYSTEM_TOYBOX=y
+CONFIG_USART2_RXBUFSIZE=128
+CONFIG_USART2_SERIAL_CONSOLE=y
+CONFIG_USART2_TXBUFSIZE=128