1CONFIG_ARC=y 2CONFIG_ISA_ARCV2=y 3CONFIG_CPU_ARCEM6=y 4CONFIG_SYS_ICACHE_OFF=y 5CONFIG_SYS_DCACHE_OFF=y 6CONFIG_TARGET_IOT_DEVKIT=y 7CONFIG_SYS_TEXT_BASE=0x20000000 8CONFIG_SYS_CLK_FREQ=16000000 9# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set 10CONFIG_SYS_PROMPT="IoTDK# " 11# CONFIG_CMD_BOOTD is not set 12# CONFIG_CMD_BOOTM is not set 13# CONFIG_CMD_ELF is not set 14# CONFIG_CMD_XIMG is not set 15# CONFIG_CMD_FLASH is not set 16# CONFIG_CMD_LOADB is not set 17# CONFIG_CMD_LOADS is not set 18CONFIG_CMD_MMC=y 19CONFIG_CMD_USB=y 20# CONFIG_CMD_NET is not set 21CONFIG_CMD_FAT=y 22CONFIG_OF_CONTROL=y 23CONFIG_OF_EMBED=y 24CONFIG_DEFAULT_DEVICE_TREE="iot_devkit" 25CONFIG_ENV_IS_IN_FAT=y 26CONFIG_ENV_FAT_INTERFACE="mmc" 27CONFIG_ENV_FAT_DEVICE_AND_PART="0:1" 28CONFIG_DM=y 29CONFIG_MMC=y 30CONFIG_MMC_DW=y 31CONFIG_DM_SERIAL=y 32CONFIG_SYS_NS16550=y 33CONFIG_USB=y 34CONFIG_DM_USB=y 35CONFIG_USB_DWC2=y 36CONFIG_USB_DWC2_BUFFER_SIZE=16 37CONFIG_USB_STORAGE=y 38CONFIG_FS_FAT_MAX_CLUSTSIZE=4096 39