diff --git a/bsp/bouffalolab/bl602/.config b/bsp/bouffalolab/bl602/.config
new file mode 100644
index 0000000000000000000000000000000000000000..504d04f38f9a5a378c27e147b61de27df3e2a234
--- /dev/null
+++ b/bsp/bouffalolab/bl602/.config
@@ -0,0 +1,548 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# RT-Thread Project Configuration
+#
+
+#
+# RT-Thread Kernel
+#
+CONFIG_RT_NAME_MAX=8
+# CONFIG_RT_USING_ARCH_DATA_TYPE is not set
+# CONFIG_RT_USING_SMP is not set
+CONFIG_RT_ALIGN_SIZE=8
+# CONFIG_RT_THREAD_PRIORITY_8 is not set
+CONFIG_RT_THREAD_PRIORITY_32=y
+# CONFIG_RT_THREAD_PRIORITY_256 is not set
+CONFIG_RT_THREAD_PRIORITY_MAX=32
+CONFIG_RT_TICK_PER_SECOND=1000
+# CONFIG_RT_USING_OVERFLOW_CHECK is not set
+# CONFIG_RT_USING_HOOK is not set
+# CONFIG_RT_USING_IDLE_HOOK is not set
+CONFIG_IDLE_THREAD_STACK_SIZE=4096
+# CONFIG_RT_USING_TIMER_SOFT is not set
+
+#
+# kservice optimization
+#
+# CONFIG_RT_KSERVICE_USING_STDLIB is not set
+# CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
+# CONFIG_RT_USING_ASM_MEMCPY is not set
+# CONFIG_RT_DEBUG is not set
+
+#
+# Inter-Thread communication
+#
+CONFIG_RT_USING_SEMAPHORE=y
+CONFIG_RT_USING_MUTEX=y
+CONFIG_RT_USING_EVENT=y
+CONFIG_RT_USING_MAILBOX=y
+CONFIG_RT_USING_MESSAGEQUEUE=y
+# CONFIG_RT_USING_SIGNALS is not set
+
+#
+# Memory Management
+#
+# CONFIG_RT_USING_MEMPOOL is not set
+# CONFIG_RT_USING_MEMHEAP is not set
+CONFIG_RT_USING_NOHEAP=y
+# CONFIG_RT_USING_SMALL_MEM is not set
+# CONFIG_RT_USING_SLAB is not set
+# CONFIG_RT_USING_USERHEAP is not set
+# CONFIG_RT_USING_MEMTRACE is not set
+# CONFIG_RT_USING_HEAP is not set
+
+#
+# Kernel Device Object
+#
+CONFIG_RT_USING_DEVICE=y
+# CONFIG_RT_USING_DEVICE_OPS is not set
+# CONFIG_RT_USING_INTERRUPT_INFO is not set
+CONFIG_RT_USING_CONSOLE=y
+CONFIG_RT_CONSOLEBUF_SIZE=128
+CONFIG_RT_CONSOLE_DEVICE_NAME="uarths"
+# CONFIG_RT_PRINTF_LONGLONG is not set
+CONFIG_RT_VER_NUM=0x40004
+# CONFIG_RT_USING_CPU_FFS is not set
+CONFIG_ARCH_RISCV_FPU=y
+CONFIG_ARCH_RISCV_FPU_S=y
+# CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
+
+#
+# RT-Thread Components
+#
+CONFIG_RT_USING_COMPONENTS_INIT=y
+CONFIG_RT_USING_USER_MAIN=y
+CONFIG_RT_MAIN_THREAD_STACK_SIZE=8192
+CONFIG_RT_MAIN_THREAD_PRIORITY=10
+
+#
+# C++ features
+#
+# CONFIG_RT_USING_CPLUSPLUS is not set
+
+#
+# Command shell
+#
+# CONFIG_RT_USING_FINSH is not set
+# CONFIG_RT_USING_MSH is not set
+
+#
+# Device virtual file system
+#
+# CONFIG_RT_USING_DFS is not set
+
+#
+# Device Drivers
+#
+# CONFIG_RT_USING_DEVICE_IPC is not set
+# CONFIG_RT_USING_SERIAL is not set
+# CONFIG_RT_USING_CAN is not set
+# CONFIG_RT_USING_HWTIMER is not set
+# CONFIG_RT_USING_CPUTIME is not set
+# CONFIG_RT_USING_I2C is not set
+# CONFIG_RT_USING_PHY is not set
+# CONFIG_RT_USING_PIN is not set
+# CONFIG_RT_USING_ADC is not set
+# CONFIG_RT_USING_DAC is not set
+# CONFIG_RT_USING_PWM is not set
+# CONFIG_RT_USING_MTD_NOR is not set
+# CONFIG_RT_USING_MTD_NAND is not set
+# CONFIG_RT_USING_PM is not set
+# CONFIG_RT_USING_RTC is not set
+# CONFIG_RT_USING_SDIO is not set
+# CONFIG_RT_USING_SPI is not set
+# CONFIG_RT_USING_WDT is not set
+# CONFIG_RT_USING_AUDIO is not set
+# CONFIG_RT_USING_SENSOR is not set
+# CONFIG_RT_USING_TOUCH is not set
+# CONFIG_RT_USING_HWCRYPTO is not set
+# CONFIG_RT_USING_PULSE_ENCODER is not set
+# CONFIG_RT_USING_INPUT_CAPTURE is not set
+# CONFIG_RT_USING_WIFI is not set
+
+#
+# Using USB
+#
+# CONFIG_RT_USING_USB_HOST is not set
+# CONFIG_RT_USING_USB_DEVICE is not set
+
+#
+# POSIX layer and C standard library
+#
+# CONFIG_RT_USING_LIBC is not set
+# CONFIG_RT_USING_PTHREADS is not set
+# CONFIG_RT_LIBC_USING_TIME is not set
+
+#
+# Network
+#
+
+#
+# Socket abstraction layer
+#
+# CONFIG_RT_USING_SAL is not set
+
+#
+# Network interface device
+#
+# CONFIG_RT_USING_NETDEV is not set
+
+#
+# light weight TCP/IP stack
+#
+# CONFIG_RT_USING_LWIP is not set
+
+#
+# AT commands
+#
+# CONFIG_RT_USING_AT is not set
+
+#
+# VBUS(Virtual Software BUS)
+#
+# CONFIG_RT_USING_VBUS is not set
+
+#
+# Utilities
+#
+# CONFIG_RT_USING_RYM is not set
+# CONFIG_RT_USING_ULOG is not set
+# CONFIG_RT_USING_UTEST is not set
+# CONFIG_RT_USING_RT_LINK is not set
+
+#
+# RT-Thread Utestcases
+#
+# CONFIG_RT_USING_UTESTCASES is not set
+
+#
+# RT-Thread online packages
+#
+
+#
+# IoT - internet of things
+#
+# CONFIG_PKG_USING_LORAWAN_DRIVER is not set
+# CONFIG_PKG_USING_PAHOMQTT is not set
+# CONFIG_PKG_USING_UMQTT is not set
+# CONFIG_PKG_USING_WEBCLIENT is not set
+# CONFIG_PKG_USING_WEBNET is not set
+# CONFIG_PKG_USING_MONGOOSE is not set
+# CONFIG_PKG_USING_MYMQTT is not set
+# CONFIG_PKG_USING_KAWAII_MQTT is not set
+# CONFIG_PKG_USING_BC28_MQTT is not set
+# CONFIG_PKG_USING_WEBTERMINAL is not set
+# CONFIG_PKG_USING_CJSON is not set
+# CONFIG_PKG_USING_JSMN is not set
+# CONFIG_PKG_USING_LIBMODBUS is not set
+# CONFIG_PKG_USING_FREEMODBUS is not set
+# CONFIG_PKG_USING_LJSON is not set
+# CONFIG_PKG_USING_EZXML is not set
+# CONFIG_PKG_USING_NANOPB is not set
+
+#
+# Wi-Fi
+#
+
+#
+# Marvell WiFi
+#
+# CONFIG_PKG_USING_WLANMARVELL is not set
+
+#
+# Wiced WiFi
+#
+# CONFIG_PKG_USING_WLAN_WICED is not set
+# CONFIG_PKG_USING_RW007 is not set
+# CONFIG_PKG_USING_COAP is not set
+# CONFIG_PKG_USING_NOPOLL is not set
+# CONFIG_PKG_USING_NETUTILS is not set
+# CONFIG_PKG_USING_CMUX is not set
+# CONFIG_PKG_USING_PPP_DEVICE is not set
+# CONFIG_PKG_USING_AT_DEVICE is not set
+# CONFIG_PKG_USING_ATSRV_SOCKET is not set
+# CONFIG_PKG_USING_WIZNET is not set
+# CONFIG_PKG_USING_ZB_COORDINATOR is not set
+
+#
+# IoT Cloud
+#
+# CONFIG_PKG_USING_ONENET is not set
+# CONFIG_PKG_USING_GAGENT_CLOUD is not set
+# CONFIG_PKG_USING_ALI_IOTKIT is not set
+# CONFIG_PKG_USING_AZURE is not set
+# CONFIG_PKG_USING_TENCENT_IOT_EXPLORER is not set
+# CONFIG_PKG_USING_JIOT-C-SDK is not set
+# CONFIG_PKG_USING_UCLOUD_IOT_SDK is not set
+# CONFIG_PKG_USING_JOYLINK is not set
+# CONFIG_PKG_USING_NIMBLE is not set
+# CONFIG_PKG_USING_OTA_DOWNLOADER is not set
+# CONFIG_PKG_USING_IPMSG is not set
+# CONFIG_PKG_USING_LSSDP is not set
+# CONFIG_PKG_USING_AIRKISS_OPEN is not set
+# CONFIG_PKG_USING_LIBRWS is not set
+# CONFIG_PKG_USING_TCPSERVER is not set
+# CONFIG_PKG_USING_PROTOBUF_C is not set
+# CONFIG_PKG_USING_DLT645 is not set
+# CONFIG_PKG_USING_QXWZ is not set
+# CONFIG_PKG_USING_SMTP_CLIENT is not set
+# CONFIG_PKG_USING_ABUP_FOTA is not set
+# CONFIG_PKG_USING_LIBCURL2RTT is not set
+# CONFIG_PKG_USING_CAPNP is not set
+# CONFIG_PKG_USING_RT_CJSON_TOOLS is not set
+# CONFIG_PKG_USING_AGILE_TELNET is not set
+# CONFIG_PKG_USING_NMEALIB is not set
+# CONFIG_PKG_USING_AGILE_JSMN is not set
+# CONFIG_PKG_USING_PDULIB is not set
+# CONFIG_PKG_USING_BTSTACK is not set
+# CONFIG_PKG_USING_LORAWAN_ED_STACK is not set
+# CONFIG_PKG_USING_WAYZ_IOTKIT is not set
+# CONFIG_PKG_USING_MAVLINK is not set
+# CONFIG_PKG_USING_RAPIDJSON is not set
+# CONFIG_PKG_USING_BSAL is not set
+# CONFIG_PKG_USING_AGILE_MODBUS is not set
+# CONFIG_PKG_USING_AGILE_FTP is not set
+# CONFIG_PKG_USING_EMBEDDEDPROTO is not set
+# CONFIG_PKG_USING_RT_LINK_HW is not set
+# CONFIG_PKG_USING_LORA_PKT_FWD is not set
+# CONFIG_PKG_USING_LORA_GW_DRIVER_LIB is not set
+# CONFIG_PKG_USING_LORA_PKT_SNIFFER is not set
+# CONFIG_PKG_USING_HM is not set
+
+#
+# security packages
+#
+# CONFIG_PKG_USING_MBEDTLS is not set
+# CONFIG_PKG_USING_libsodium is not set
+# CONFIG_PKG_USING_TINYCRYPT is not set
+# CONFIG_PKG_USING_TFM is not set
+# CONFIG_PKG_USING_YD_CRYPTO is not set
+
+#
+# language packages
+#
+# CONFIG_PKG_USING_LUA is not set
+# CONFIG_PKG_USING_JERRYSCRIPT is not set
+# CONFIG_PKG_USING_MICROPYTHON is not set
+# CONFIG_PKG_USING_PIKASCRIPT is not set
+
+#
+# multimedia packages
+#
+# CONFIG_PKG_USING_OPENMV is not set
+# CONFIG_PKG_USING_MUPDF is not set
+# CONFIG_PKG_USING_STEMWIN is not set
+# CONFIG_PKG_USING_WAVPLAYER is not set
+# CONFIG_PKG_USING_TJPGD is not set
+# CONFIG_PKG_USING_PDFGEN is not set
+# CONFIG_PKG_USING_HELIX is not set
+# CONFIG_PKG_USING_AZUREGUIX is not set
+# CONFIG_PKG_USING_TOUCHGFX2RTT is not set
+# CONFIG_PKG_USING_NUEMWIN is not set
+# CONFIG_PKG_USING_MP3PLAYER is not set
+# CONFIG_PKG_USING_TINYJPEG is not set
+# CONFIG_PKG_USING_UGUI is not set
+
+#
+# tools packages
+#
+# CONFIG_PKG_USING_CMBACKTRACE is not set
+# CONFIG_PKG_USING_EASYFLASH is not set
+# CONFIG_PKG_USING_EASYLOGGER is not set
+# CONFIG_PKG_USING_SYSTEMVIEW is not set
+# CONFIG_PKG_USING_SEGGER_RTT is not set
+# CONFIG_PKG_USING_RDB is not set
+# CONFIG_PKG_USING_QRCODE is not set
+# CONFIG_PKG_USING_ULOG_EASYFLASH is not set
+# CONFIG_PKG_USING_ULOG_FILE is not set
+# CONFIG_PKG_USING_LOGMGR is not set
+# CONFIG_PKG_USING_ADBD is not set
+# CONFIG_PKG_USING_COREMARK is not set
+# CONFIG_PKG_USING_DHRYSTONE is not set
+# CONFIG_PKG_USING_MEMORYPERF is not set
+# CONFIG_PKG_USING_NR_MICRO_SHELL is not set
+# CONFIG_PKG_USING_CHINESE_FONT_LIBRARY is not set
+# CONFIG_PKG_USING_LUNAR_CALENDAR is not set
+# CONFIG_PKG_USING_BS8116A is not set
+# CONFIG_PKG_USING_GPS_RMC is not set
+# CONFIG_PKG_USING_URLENCODE is not set
+# CONFIG_PKG_USING_UMCN is not set
+# CONFIG_PKG_USING_LWRB2RTT is not set
+# CONFIG_PKG_USING_CPU_USAGE is not set
+# CONFIG_PKG_USING_GBK2UTF8 is not set
+# CONFIG_PKG_USING_VCONSOLE is not set
+# CONFIG_PKG_USING_KDB is not set
+# CONFIG_PKG_USING_WAMR is not set
+# CONFIG_PKG_USING_MICRO_XRCE_DDS_CLIENT is not set
+# CONFIG_PKG_USING_LWLOG is not set
+# CONFIG_PKG_USING_ANV_TRACE is not set
+# CONFIG_PKG_USING_ANV_MEMLEAK is not set
+# CONFIG_PKG_USING_ANV_TESTSUIT is not set
+# CONFIG_PKG_USING_ANV_BENCH is not set
+# CONFIG_PKG_USING_DEVMEM is not set
+# CONFIG_PKG_USING_REGEX is not set
+# CONFIG_PKG_USING_MEM_SANDBOX is not set
+# CONFIG_PKG_USING_SOLAR_TERMS is not set
+# CONFIG_PKG_USING_GAN_ZHI is not set
+
+#
+# system packages
+#
+
+#
+# acceleration: Assembly language or algorithmic acceleration packages
+#
+# CONFIG_PKG_USING_RT_MEMCPY_CM is not set
+# CONFIG_PKG_USING_QFPLIB_M0_FULL is not set
+# CONFIG_PKG_USING_QFPLIB_M0_TINY is not set
+# CONFIG_PKG_USING_QFPLIB_M3 is not set
+
+#
+# Micrium: Micrium software products porting for RT-Thread
+#
+# CONFIG_PKG_USING_UCOSIII_WRAPPER is not set
+# CONFIG_PKG_USING_UCOSII_WRAPPER is not set
+# CONFIG_PKG_USING_UC_CRC is not set
+# CONFIG_PKG_USING_UC_CLK is not set
+# CONFIG_PKG_USING_UC_COMMON is not set
+# CONFIG_PKG_USING_UC_MODBUS is not set
+# CONFIG_PKG_USING_GUIENGINE is not set
+# CONFIG_PKG_USING_CAIRO is not set
+# CONFIG_PKG_USING_PIXMAN is not set
+# CONFIG_PKG_USING_PARTITION is not set
+# CONFIG_PKG_USING_FAL is not set
+# CONFIG_PKG_USING_FLASHDB is not set
+# CONFIG_PKG_USING_SQLITE is not set
+# CONFIG_PKG_USING_RTI is not set
+# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
+# CONFIG_PKG_USING_CMSIS is not set
+# CONFIG_PKG_USING_DFS_YAFFS is not set
+# CONFIG_PKG_USING_LITTLEFS is not set
+# CONFIG_PKG_USING_DFS_JFFS2 is not set
+# CONFIG_PKG_USING_DFS_UFFS is not set
+# CONFIG_PKG_USING_LWEXT4 is not set
+# CONFIG_PKG_USING_THREAD_POOL is not set
+# CONFIG_PKG_USING_ROBOTS is not set
+# CONFIG_PKG_USING_EV is not set
+# CONFIG_PKG_USING_SYSWATCH is not set
+# CONFIG_PKG_USING_SYS_LOAD_MONITOR is not set
+# CONFIG_PKG_USING_PLCCORE is not set
+# CONFIG_PKG_USING_RAMDISK is not set
+# CONFIG_PKG_USING_MININI is not set
+# CONFIG_PKG_USING_QBOOT is not set
+# CONFIG_PKG_USING_PPOOL is not set
+# CONFIG_PKG_USING_OPENAMP is not set
+# CONFIG_PKG_USING_RT_KPRINTF_THREADSAFE is not set
+# CONFIG_PKG_USING_LPM is not set
+# CONFIG_PKG_USING_TLSF is not set
+# CONFIG_PKG_USING_EVENT_RECORDER is not set
+# CONFIG_PKG_USING_ARM_2D is not set
+# CONFIG_PKG_USING_WCWIDTH is not set
+# CONFIG_PKG_USING_MCUBOOT is not set
+
+#
+# peripheral libraries and drivers
+#
+# CONFIG_PKG_USING_SENSORS_DRIVERS is not set
+# CONFIG_PKG_USING_REALTEK_AMEBA is not set
+# CONFIG_PKG_USING_SHT2X is not set
+# CONFIG_PKG_USING_SHT3X is not set
+# CONFIG_PKG_USING_AS7341 is not set
+# CONFIG_PKG_USING_STM32_SDIO is not set
+# CONFIG_PKG_USING_ICM20608 is not set
+# CONFIG_PKG_USING_U8G2 is not set
+# CONFIG_PKG_USING_BUTTON is not set
+# CONFIG_PKG_USING_PCF8574 is not set
+# CONFIG_PKG_USING_SX12XX is not set
+# CONFIG_PKG_USING_SIGNAL_LED is not set
+# CONFIG_PKG_USING_LEDBLINK is not set
+# CONFIG_PKG_USING_LITTLED is not set
+# CONFIG_PKG_USING_LKDGUI is not set
+# CONFIG_PKG_USING_NRF5X_SDK is not set
+# CONFIG_PKG_USING_NRFX is not set
+# CONFIG_PKG_USING_WM_LIBRARIES is not set
+# CONFIG_PKG_USING_KENDRYTE_SDK is not set
+# CONFIG_PKG_USING_INFRARED is not set
+# CONFIG_PKG_USING_AGILE_BUTTON is not set
+# CONFIG_PKG_USING_AGILE_LED is not set
+# CONFIG_PKG_USING_AT24CXX is not set
+# CONFIG_PKG_USING_MOTIONDRIVER2RTT is not set
+# CONFIG_PKG_USING_AD7746 is not set
+# CONFIG_PKG_USING_PCA9685 is not set
+# CONFIG_PKG_USING_I2C_TOOLS is not set
+# CONFIG_PKG_USING_NRF24L01 is not set
+# CONFIG_PKG_USING_TOUCH_DRIVERS is not set
+# CONFIG_PKG_USING_MAX17048 is not set
+# CONFIG_PKG_USING_RPLIDAR is not set
+# CONFIG_PKG_USING_AS608 is not set
+# CONFIG_PKG_USING_RC522 is not set
+# CONFIG_PKG_USING_WS2812B is not set
+# CONFIG_PKG_USING_EMBARC_BSP is not set
+# CONFIG_PKG_USING_EXTERN_RTC_DRIVERS is not set
+# CONFIG_PKG_USING_MULTI_RTIMER is not set
+# CONFIG_PKG_USING_MAX7219 is not set
+# CONFIG_PKG_USING_BEEP is not set
+# CONFIG_PKG_USING_EASYBLINK is not set
+# CONFIG_PKG_USING_PMS_SERIES is not set
+# CONFIG_PKG_USING_CAN_YMODEM is not set
+# CONFIG_PKG_USING_LORA_RADIO_DRIVER is not set
+# CONFIG_PKG_USING_QLED is not set
+# CONFIG_PKG_USING_PAJ7620 is not set
+# CONFIG_PKG_USING_AGILE_CONSOLE is not set
+# CONFIG_PKG_USING_LD3320 is not set
+# CONFIG_PKG_USING_WK2124 is not set
+# CONFIG_PKG_USING_LY68L6400 is not set
+# CONFIG_PKG_USING_DM9051 is not set
+# CONFIG_PKG_USING_SSD1306 is not set
+# CONFIG_PKG_USING_QKEY is not set
+# CONFIG_PKG_USING_RS485 is not set
+# CONFIG_PKG_USING_NES is not set
+# CONFIG_PKG_USING_VIRTUAL_SENSOR is not set
+# CONFIG_PKG_USING_VDEVICE is not set
+# CONFIG_PKG_USING_SGM706 is not set
+# CONFIG_PKG_USING_STM32WB55_SDK is not set
+# CONFIG_PKG_USING_RDA58XX is not set
+# CONFIG_PKG_USING_LIBNFC is not set
+# CONFIG_PKG_USING_MFOC is not set
+# CONFIG_PKG_USING_TMC51XX is not set
+# CONFIG_PKG_USING_TCA9534 is not set
+# CONFIG_PKG_USING_KOBUKI is not set
+# CONFIG_PKG_USING_ROSSERIAL is not set
+# CONFIG_PKG_USING_MICRO_ROS is not set
+# CONFIG_PKG_USING_MCP23008 is not set
+# CONFIG_PKG_USING_BLUETRUM_SDK is not set
+# CONFIG_PKG_USING_MISAKA_AT24CXX is not set
+# CONFIG_PKG_USING_MISAKA_RGB_BLING is not set
+
+#
+# AI packages
+#
+# CONFIG_PKG_USING_LIBANN is not set
+# CONFIG_PKG_USING_NNOM is not set
+# CONFIG_PKG_USING_ONNX_BACKEND is not set
+# CONFIG_PKG_USING_ONNX_PARSER is not set
+# CONFIG_PKG_USING_TENSORFLOWLITEMICRO is not set
+# CONFIG_PKG_USING_ELAPACK is not set
+# CONFIG_PKG_USING_ULAPACK is not set
+# CONFIG_PKG_USING_QUEST is not set
+# CONFIG_PKG_USING_NAXOS is not set
+
+#
+# miscellaneous packages
+#
+
+#
+# samples: kernel and components samples
+#
+# CONFIG_PKG_USING_KERNEL_SAMPLES is not set
+# CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
+# CONFIG_PKG_USING_NETWORK_SAMPLES is not set
+# CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
+
+#
+# entertainment: terminal games and other interesting software packages
+#
+# CONFIG_PKG_USING_CMATRIX is not set
+# CONFIG_PKG_USING_SL is not set
+# CONFIG_PKG_USING_CAL is not set
+# CONFIG_PKG_USING_ACLOCK is not set
+# CONFIG_PKG_USING_THREES is not set
+# CONFIG_PKG_USING_2048 is not set
+# CONFIG_PKG_USING_SNAKE is not set
+# CONFIG_PKG_USING_TETRIS is not set
+# CONFIG_PKG_USING_DONUT is not set
+# CONFIG_PKG_USING_LIBCSV is not set
+# CONFIG_PKG_USING_OPTPARSE is not set
+# CONFIG_PKG_USING_FASTLZ is not set
+# CONFIG_PKG_USING_MINILZO is not set
+# CONFIG_PKG_USING_QUICKLZ is not set
+# CONFIG_PKG_USING_LZMA is not set
+# CONFIG_PKG_USING_MULTIBUTTON is not set
+# CONFIG_PKG_USING_FLEXIBLE_BUTTON is not set
+# CONFIG_PKG_USING_CANFESTIVAL is not set
+# CONFIG_PKG_USING_ZLIB is not set
+# CONFIG_PKG_USING_MINIZIP is not set
+# CONFIG_PKG_USING_DSTR is not set
+# CONFIG_PKG_USING_TINYFRAME is not set
+# CONFIG_PKG_USING_KENDRYTE_DEMO is not set
+# CONFIG_PKG_USING_DIGITALCTRL is not set
+# CONFIG_PKG_USING_UPACKER is not set
+# CONFIG_PKG_USING_UPARAM is not set
+# CONFIG_PKG_USING_HELLO is not set
+# CONFIG_PKG_USING_VI is not set
+# CONFIG_PKG_USING_KI is not set
+# CONFIG_PKG_USING_ARMv7M_DWT is not set
+# CONFIG_PKG_USING_VT100 is not set
+# CONFIG_PKG_USING_UKAL is not set
+# CONFIG_PKG_USING_CRCLIB is not set
+# CONFIG_PKG_USING_LWGPS is not set
+# CONFIG_PKG_USING_STATE_MACHINE is not set
+# CONFIG_PKG_USING_MCURSES is not set
+# CONFIG_PKG_USING_COWSAY is not set
+# CONFIG_PKG_USING_TERMBOX is not set
+CONFIG_PKG_USING_BL_MCU_SDK=y
+CONFIG_PKG_BL_MCU_SDK_PATH="/packages/misc/bouffalolab_sdk"
+CONFIG_PKG_USING_BL_MCU_SDK_LATEST_VERSION=y
+CONFIG_PKG_BL_MCU_SDK_VER="latest"
+CONFIG_BSP_USING_DEBUG_UART=y
+CONFIG_BOARD_BL602=y
diff --git a/bsp/bouffalolab/bl602/Kconfig b/bsp/bouffalolab/bl602/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..53782eea9691fc541aa0bfed1a241c6040fe55d7
--- /dev/null
+++ b/bsp/bouffalolab/bl602/Kconfig
@@ -0,0 +1,30 @@
+mainmenu "RT-Thread Project Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../../.."
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+source "board/Kconfig"
+
+config BOARD_BL602
+    bool
+    select ARCH_RISCV_FPU_S
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    select PKG_USING_BL_MCU_SDK
+    default y
+
+
diff --git a/bsp/bouffalolab/bl602/README.md b/bsp/bouffalolab/bl602/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..44e2548ba8f0743c356a702a627ab503da4f0782
--- /dev/null
+++ b/bsp/bouffalolab/bl602/README.md
@@ -0,0 +1,62 @@
+# BL602 IOT 开发板 BSP 说明
+
+## 简介
+
+BL602 是一款 Wi-Fi + BLE 组合的芯片组，用于低功耗和高性能应用开发。无线子系统包含 2.4G 无线电，Wi-Fi 802.11b/g/n 和 BLE 基带/MAC 设计。微控制器子系统包含一个低功耗的 32 位 RISC CPU，高速缓存和存储器。电源管理单元控制低功耗模式。此外，还支持各种安全性能。
+
+板载主要资源如下：
+
+| 硬件      | 描述          |
+| --------- | -------------|
+| 芯片型号  | BL602         |
+| CPU       | rv32imafc    |
+| 主频      | 192M          |
+| 片内SRAM  | 256K          |
+| 片内FLASH | 1024K         |
+
+## 编译说明
+
+BL602 IOT 开发板仅支持 GCC编译器，以下是具体版本信息：
+
+| IDE/编译器 | 已测试版本                   |
+| ---------- | ---------------------------- |
+| GCC        | GCC 10.2.0 20210819 (release) |
+
+## 外设支持
+
+## 使用说明
+
+编译 BL602，需要有 RT-Thread 的代码，因为 BL602 的 sdk 是以软件包方式，所以需要在 bsp/bouffalolab 下做软件包更新。Windows 下推荐使用 env 工具，然后在 console 下进入 bsp/bouffalolab 目录中，运行：
+
+    cd bsp/bouffalolab
+    pkgs --update
+
+下载risc-v的工具链，[下载地址](https://gitee.com/bouffalolab/toolchain_gcc_sifive_windows)
+
+更新完软件包后，在`rtconfig.py`中将risc-v工具链的本地路径加入到 **EXEC_PATH** 参数。
+
+### 代码烧录
+
+- 见 [bl_dev_cube](http://bouffalolab.gitee.io/bl_mcu_sdk/get_started/bl_dev_cube.html)
+
+### 实验现象
+
+连接开发板对应串口到 PC , 在终端工具里打开相应的串口（115200-8-1-N），复位设备后，在串口上可以看到 RT-Thread 的输出信息:
+
+```
+ \ | /
+- RT -     Thread Operating System
+ / | \     4.0.4 build Sep 28 2021
+ 2006 - 2021 Copyright by rt-thread team
+Hello, world
+```
+
+## 联系人信息
+
+维护人：
+
+- [sakumisu](https://github.com/sakumisu)
+
+## 参考
+
+* [BL_MCU_SDK](https://gitee.com/bouffalolab/bl_mcu_sdk)
diff --git a/bsp/bouffalolab/bl602/SConscript b/bsp/bouffalolab/bl602/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..c7ef7659ecea92b1dd9b71a97736a8552ee02551
--- /dev/null
+++ b/bsp/bouffalolab/bl602/SConscript
@@ -0,0 +1,14 @@
+# for module compiling
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
diff --git a/bsp/bouffalolab/bl602/SConstruct b/bsp/bouffalolab/bl602/SConstruct
new file mode 100644
index 0000000000000000000000000000000000000000..755cc2ddbb9a17d0bfc4c6d80194a6c82709af15
--- /dev/null
+++ b/bsp/bouffalolab/bl602/SConstruct
@@ -0,0 +1,45 @@
+import os
+import sys
+import rtconfig
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+try:
+    from building import *
+except:
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
+    exit(-1)
+
+TARGET = 'rt-thread.' + rtconfig.TARGET_EXT
+
+DefaultEnvironment(tools=[])
+env = Environment(tools = ['mingw'],
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    CXX = rtconfig.CXX, CXXFLAGS = rtconfig.CXXFLAGS,
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+env['ASCOM'] = env['ASPPCOM']
+
+if rtconfig.PLATFORM == 'iar':
+    env.Replace(CCCOM = ['$CC $CCFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
+    env.Replace(ARFLAGS = [''])
+    env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+SDK_ROOT = os.path.abspath('./')
+
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
+
+# make a building
+DoBuilding(TARGET, objs)
diff --git a/bsp/bouffalolab/bl602/applications/SConscript b/bsp/bouffalolab/bl602/applications/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..c583d3016e0f932c30df95aacb80ae6a049bb0f4
--- /dev/null
+++ b/bsp/bouffalolab/bl602/applications/SConscript
@@ -0,0 +1,9 @@
+from building import *
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c') + Glob('*.cpp')
+CPPPATH = [cwd]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')
diff --git a/bsp/bouffalolab/bl602/applications/main.c b/bsp/bouffalolab/bl602/applications/main.c
new file mode 100644
index 0000000000000000000000000000000000000000..84c5399b7fb71ced58977caeea93d4dd3cfa1cb5
--- /dev/null
+++ b/bsp/bouffalolab/bl602/applications/main.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018/09/30     Bernard      The first version
+ */
+
+#include <rtthread.h>
+#include <stdio.h>
+
+#include <rtconfig.h>
+
+int main(void)
+{
+    rt_kprintf("Hello, world\n");
+
+    return 0;
+}
diff --git a/bsp/bouffalolab/bl602/board/Kconfig b/bsp/bouffalolab/bl602/board/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..5061315ac115b96ae007afed9f6eb51236343c4b
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/Kconfig
@@ -0,0 +1,3 @@
+config BSP_USING_DEBUG_UART
+    bool "Enable DEBUG UART"
+    default n
diff --git a/bsp/bouffalolab/bl602/board/SConscript b/bsp/bouffalolab/bl602/board/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..51e5ae86e1723327a8b5fcb4a2cef2e1dfafdf11
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/SConscript
@@ -0,0 +1,23 @@
+import os
+import rtconfig
+from building import *
+
+cwd = GetCurrentDir()
+
+path =  []
+
+src = Split('''
+board.c
+''')
+
+if GetDepend('BSP_USING_DEBUG_UART'):
+    src += ['drv_uart_no_device.c']
+
+src += ['startup_gcc.S']
+
+path +=  [cwd]
+
+CPPDEFINES = []
+
+group = DefineGroup('board', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
+Return('group')
diff --git a/bsp/bouffalolab/bl602/board/board.c b/bsp/bouffalolab/bl602/board/board.c
new file mode 100644
index 0000000000000000000000000000000000000000..fe84cfec4e31d558663580c3b5e0419bc6964b5a
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/board.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#include <rthw.h>
+#include "board.h"
+
+#ifdef BSP_USING_DEBUG_UART
+#include "drv_uart_no_device.h"
+#endif
+
+extern void board_init(void);
+
+void systick_isr(void)
+{
+    rt_interrupt_enter();
+    rt_tick_increase();
+    rt_interrupt_leave();
+}
+
+void rt_hw_board_init(void)
+{
+    board_init();
+    mtimer_set_alarm_time(RT_TICK_PER_SECOND, systick_isr);
+
+    /* USART driver initialization is open by default */
+#ifdef BSP_USING_DEBUG_UART
+    rt_hw_debug_uart_init();
+#endif
+
+#if defined(RT_USING_HEAP)
+    rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
+#endif
+
+#ifdef RT_USING_COMPONENTS_INIT
+    rt_components_board_init();
+#endif
+#ifdef RT_USING_DEVICE
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif
+
+    return;
+}
+
diff --git a/bsp/bouffalolab/bl602/board/board.h b/bsp/bouffalolab/bl602/board/board.h
new file mode 100644
index 0000000000000000000000000000000000000000..dc1ccfdcd525588317501a76c323875542d1a901
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/board.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#ifndef __BOARD__
+#define __BOARD__
+
+#include "hal_clock.h"
+#include "hal_mtimer.h"
+
+#endif
diff --git a/bsp/bouffalolab/bl602/board/bouffalo.ld b/bsp/bouffalolab/bl602/board/bouffalo.ld
new file mode 100644
index 0000000000000000000000000000000000000000..a3826ae141c537f976c44639f0d04cc865797c45
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/bouffalo.ld
@@ -0,0 +1,234 @@
+/****************************************************************************************
+* @file map.txt
+*
+* @brief This file is the map file (gnuarm or armgcc).
+*
+* Copyright (C) BouffaloLab 2018
+*
+****************************************************************************************
+*/
+
+/* configure the CPU type */
+OUTPUT_ARCH( "riscv" )
+/* link with the standard c library */
+/*INPUT(-lc)*/
+/* link with the standard GCC library */
+/*INPUT(-lgcc)*/
+/* configure the entry point */
+ENTRY(_enter)
+
+StackSize = 0x0400; /*  1KB */
+HeapSize  = 0x1000; /*  4KB */
+
+MEMORY
+{
+    xip_memory  (rx)  : ORIGIN = 0x23000000, LENGTH = 1024K
+    itcm_memory (rx)  : ORIGIN = 0x22010000, LENGTH = 16K
+    dtcm_memory (rx)  : ORIGIN = 0x42014000, LENGTH = 48K
+    ram_memory  (!rx) : ORIGIN = 0x42020000, LENGTH = 176K
+}
+
+SECTIONS
+{
+    PROVIDE(__metal_chicken_bit = 0);
+
+    .text :
+    {
+        . = ALIGN(4);
+        __text_code_start__ = .;
+
+        KEEP (*(.text.metal.init.enter))
+        KEEP (*(SORT_NONE(.init)))
+
+        /* section information for shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+
+        /* section information for initial. */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+
+        *(.text)
+        *(.text.*)
+
+        /*put .rodata**/
+        *(EXCLUDE_FILE( *bl602_glb*.o* \
+                        *bl602_pds*.o* \
+                        *bl602_common*.o* \
+                        *bl602_sf_cfg*.o* \
+                        *bl602_sf_ctrl*.o* \
+                        *bl602_sflash*.o* \
+                        *bl602_xip_sflash*.o* \
+                        *bl602_ef_ctrl*.o*) .rodata*)
+        *(.rodata)
+        *(.rodata.*)
+
+        *(.srodata)
+        *(.srodata.*)
+
+        . = ALIGN(4);
+        __text_code_end__ = .;
+
+    } > xip_memory
+
+    . = ALIGN(4);
+    __itcm_load_addr = .;
+
+    .itcm_region : AT (__itcm_load_addr)
+    {
+        . = ALIGN(4);
+        __tcm_code_start__ = .;
+
+        *(.tcm_code.*)
+        *(.tcm_const.*)
+        *(.sclock_rlt_code.*)
+        *(.sclock_rlt_const.*)
+
+        *bl602_glb*.o*(.rodata*)
+        *bl602_pds*.o*(.rodata*)
+        *bl602_common*.o*(.rodata*)
+        *bl602_sf_cfg*.o*(.rodata*)
+        *bl602_sf_ctrl*.o*(.rodata*)
+        *bl602_sflash*.o*(.rodata*)
+        *bl602_xip_sflash*.o*(.rodata*)
+        *bl602_ef_ctrl*.o*(.rodata*)
+
+
+        . = ALIGN(4);
+        __tcm_code_end__ = .;
+    } > itcm_memory
+
+    __dtcm_load_addr = __itcm_load_addr + SIZEOF(.itcm_region);
+
+    .dtcm_region : AT (__dtcm_load_addr)
+    {
+        . = ALIGN(4);
+        __tcm_data_start__ = .;
+
+        *(.tcm_data)
+
+        . = ALIGN(4);
+        __tcm_data_end__ = .;
+    } > dtcm_memory
+
+
+    /* .heap_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of heap sections, and assign
+     * values to heap symbols later */
+    .heap_dummy (NOLOAD):
+    {
+        . = ALIGN(0x4);
+        . = . + HeapSize;
+        . = ALIGN(0x4);
+    } > dtcm_memory
+
+    _HeapBase = ORIGIN(dtcm_memory) + LENGTH(dtcm_memory) - StackSize - HeapSize;
+    _HeapSize = HeapSize;
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(_HeapBase >= __tcm_data_end__, "region RAM overflowed with stack")
+
+    /*************************************************************************/
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (NOLOAD):
+    {
+        . = ALIGN(0x4);
+        . = . + StackSize;
+        . = ALIGN(0x4);
+    } > dtcm_memory
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(dtcm_memory) + LENGTH(dtcm_memory);
+    PROVIDE( __freertos_irq_stack_top = __StackTop);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__StackLimit >= __tcm_data_end__, "region RAM overflowed with stack")
+    /*************************************************************************/
+
+    __system_ram_load_addr = __dtcm_load_addr + SIZEOF(.dtcm_region);
+
+    .system_ram_data_region : AT (__system_ram_load_addr)
+    {
+        . = ALIGN(4);
+        __system_ram_data_start__ = .;
+
+        *(.system_ram)
+
+        . = ALIGN(4);
+        __system_ram_data_end__ = .;
+    } > ram_memory
+
+    __ram_load_addr = __system_ram_load_addr + SIZEOF(.system_ram_data_region);
+
+    /* Data section */
+    RAM_DATA : AT (__ram_load_addr)
+    {
+        . = ALIGN(4);
+        __ram_data_start__ = .;
+
+        PROVIDE( __global_pointer$ = . + 0x800 );
+
+        *(.data)
+        *(.data.*)
+        *(.sdata)
+        *(.sdata.*)
+        *(.sdata2)
+        *(.sdata2.*)
+
+        . = ALIGN(4);
+        __ram_data_end__ = .;
+    } > ram_memory
+
+    .bss (NOLOAD) :
+    {
+        . = ALIGN(4);
+        __bss_start__ = .;
+
+        *(.bss*)
+        *(.sbss*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        __bss_end__ = .;
+    } > ram_memory
+
+    .noinit_data (NOLOAD) :
+    {
+        . = ALIGN(4);
+        __noinit_data_start__ = .;
+
+        *(.noinit_data*)
+
+        . = ALIGN(4);
+        __noinit_data_end__ = .;
+    } > ram_memory
+
+    .heap (NOLOAD):
+    {
+        . = ALIGN(4);
+        __HeapBase = .;
+
+        /*__end__ = .;*/
+        /*end = __end__;*/
+        KEEP(*(.heap*))
+
+        . = ALIGN(4);
+        __HeapLimit = .;
+    } > ram_memory
+    __HeapLimit = ORIGIN(ram_memory) + LENGTH(ram_memory);
+
+}
+
diff --git a/bsp/bouffalolab/bl602/board/drv_uart_no_device.c b/bsp/bouffalolab/bl602/board/drv_uart_no_device.c
new file mode 100644
index 0000000000000000000000000000000000000000..22d927299c8a0d6c9ef8967df2649c6319fc449d
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/drv_uart_no_device.c
@@ -0,0 +1,61 @@
+#include <rtthread.h>
+#include <rthw.h>
+#include "drv_uart_no_device.h"
+
+#ifdef BSP_USING_DEBUG_UART
+#include "bl602_uart.h"
+#include "bl602_glb.h"
+
+#define UART0_ID 0
+
+void rt_hw_console_output(const char *str)
+{
+    rt_size_t i = 0, size = 0;
+    char a = '\r';
+
+    size = rt_strlen(str);
+    for (i = 0; i < size; i++)
+    {
+        if (*(str + i) == '\n')
+        {
+            UART_SendData(UART0_ID, (uint8_t *)&a, 1);
+        }
+        UART_SendData(UART0_ID, (uint8_t *)(str + i), 1);
+    }
+}
+
+int rt_hw_debug_uart_init(void)
+{
+    rt_err_t result = RT_EOK;
+
+    UART_FifoCfg_Type fifoCfg = { 0 };
+    UART_CFG_Type uart_cfg = { 0 };
+
+    /* disable all interrupt */
+    UART_IntMask(UART0_ID, UART_INT_ALL, MASK);
+    /* disable uart before config */
+    UART_Disable(UART0_ID, UART_TXRX);
+
+    uart_cfg.baudRate = 115200;
+    uart_cfg.dataBits = 3;      /*!< Data length is 8 bits */
+    uart_cfg.stopBits = 1;      /*!< 1 stop bit */
+    uart_cfg.parity = 0;        /*!< UART parity none define */
+    uart_cfg.uartClk = 160000000;
+
+    GLB_Set_UART_CLK(1, 1, 0);
+    /* uart init with default configuration */
+    UART_Init(UART0_ID, &uart_cfg);
+
+    /* Enable tx free run mode */
+    UART_TxFreeRun(UART0_ID, ENABLE);
+
+    /* Set rx time-out value */
+    UART_SetRxTimeoutValue(UART0_ID, 100);
+
+    /* enable uart */
+    UART_Enable(UART0_ID, UART_TXRX);
+
+    return result;
+}
+
+#endif /* BSP_USING_DEBUG_UART */
diff --git a/bsp/bouffalolab/bl602/board/drv_uart_no_device.h b/bsp/bouffalolab/bl602/board/drv_uart_no_device.h
new file mode 100644
index 0000000000000000000000000000000000000000..6fe0d0e31a4394d572b8546ac504e06fc6687b9d
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/drv_uart_no_device.h
@@ -0,0 +1,6 @@
+#ifndef __DRV_DEBUG_UART_H__
+#define __DRV_DEBUG_UART_H__
+
+int rt_hw_debug_uart_init(void);
+
+#endif  /* __DRV_DEBUG_UART_H__ */
diff --git a/bsp/bouffalolab/bl602/board/startup_gcc.S b/bsp/bouffalolab/bl602/board/startup_gcc.S
new file mode 100644
index 0000000000000000000000000000000000000000..5a4961cb7110d143535663c108b980465ae483bf
--- /dev/null
+++ b/bsp/bouffalolab/bl602/board/startup_gcc.S
@@ -0,0 +1,103 @@
+/* Copyright 2018 SiFive, Inc */
+/* SPDX-License-Identifier: Apache-2.0 */
+#include "riscv_encoding.h"
+
+/* This code executes before _start, which is contained inside the C library.
+ * In embedded systems we want to ensure that _enter, which contains the first
+ * code to be executed, can be loaded at a specific address.  To enable this
+ * feature we provide the '.text.metal.init.enter' section, which is
+ * defined to have the first address being where execution should start. */
+.section .text.metal.init.enter
+.global _enter
+_enter:
+    .cfi_startproc
+
+    /* Inform the debugger that there is nowhere to backtrace past _enter. */
+    .cfi_undefined ra
+
+    /* The absolute first thing that must happen is configuring the global
+     * pointer register, which must be done with relaxation disabled because
+     * it's not valid to obtain the address of any symbol without GP
+     * configured.  The C environment might go ahead and do this again, but
+     * that's safe as it's a fixed register. */
+.option push
+.option norelax
+    la gp, __global_pointer$
+.option pop
+
+    /* Disable global interrupt */
+    /*clear_csr(mstatus, MSTATUS_MIE);*/
+    csrci mstatus,8
+
+    /* If there is a clint then interrupts can branch directly to the
+    * trap handler.  Otherwise the interrupt controller will need to be configured
+    * outside of this file. */
+
+    la t0, trap_entry
+    ori t0, t0, 2
+    csrw mtvec, t0
+
+    /* enable chicken bit if core is bullet series*/
+    la t0, __metal_chicken_bit
+    beqz t0, 1f
+    csrwi 0x7C1, 0
+1:
+
+    /* There may be pre-initialization routines inside the MBI code that run in
+     * C, so here we set up a C environment.  First we set up a stack pointer,
+     * which is left as a weak reference in order to allow initialization
+     * routines that do not need a stack to be set up to transparently be
+     * called. */
+    .weak __StackTop
+    la sp, __StackTop
+#ifdef __riscv_float_abi_single
+    /* deal with FP */
+    /* Is F extension present? */
+    csrr t0, misa
+    andi t0, t0, (1 << ('F' - 'A'))
+    beqz t0, 1f
+    /* If so, enable it */
+    li t0, MSTATUS_FS
+    csrs mstatus, t0
+    fssr x0
+1:
+#endif
+
+    /* Check for an initialization routine and call it if one exists, otherwise
+     * just skip over the call entirely.   Note that __metal_initialize isn't
+     * actually a full C function, as it doesn't end up with the .bss or .data
+     * segments having been initialized.  This is done to avoid putting a
+     * burden on systems that can be initialized without having a C environment
+     * set up. */
+    call SystemInit
+
+    /* start load code to itcm like. */
+    call start_load
+
+    jal System_Post_Init
+    /* At this point we can enter the C runtime's startup file.  The arguments
+     * to this function are designed to match those provided to the SEE, just
+     * so we don't have to write another ABI. */
+    csrr a0, mhartid
+    li a1, 0
+    li a2, 0
+    call entry
+
+    csrci mstatus, (1 << 3)
+
+__exit:
+    j __exit
+
+    .cfi_endproc
+/* The GCC port might not emit a __register_frame_info symbol, which eventually
+ * results in a weak undefined reference that eventually causes crash when it
+ * is dereference early in boot.  We really shouldn't need to put this here,
+ * but to deal with what I think is probably a bug in the linker script I'm
+ * going to leave this in for now.  At least it's fairly cheap :) */
+.weak __register_frame_info
+.global __register_frame_info
+.section .text.metal.init.__register_frame_info
+__register_frame_info:
+    .cfi_startproc
+    ret
+    .cfi_endproc
diff --git a/bsp/bouffalolab/bl602/link_stacksize.lds b/bsp/bouffalolab/bl602/link_stacksize.lds
new file mode 100644
index 0000000000000000000000000000000000000000..1dd893422c2e9b079747bd857dec99880b056715
--- /dev/null
+++ b/bsp/bouffalolab/bl602/link_stacksize.lds
@@ -0,0 +1 @@
+__STACKSIZE__ = 4096;
\ No newline at end of file
diff --git a/bsp/bouffalolab/bl602/rtconfig.h b/bsp/bouffalolab/bl602/rtconfig.h
new file mode 100644
index 0000000000000000000000000000000000000000..83819ec1462df18c3e8d5b64f4a45b9993ce6cc5
--- /dev/null
+++ b/bsp/bouffalolab/bl602/rtconfig.h
@@ -0,0 +1,143 @@
+#ifndef RT_CONFIG_H__
+#define RT_CONFIG_H__
+
+/* Automatically generated file; DO NOT EDIT. */
+/* RT-Thread Project Configuration */
+
+/* RT-Thread Kernel */
+
+#define RT_NAME_MAX 8
+#define RT_ALIGN_SIZE 8
+#define RT_THREAD_PRIORITY_32
+#define RT_THREAD_PRIORITY_MAX 32
+#define RT_TICK_PER_SECOND 1000
+#define IDLE_THREAD_STACK_SIZE 4096
+
+/* kservice optimization */
+
+
+/* Inter-Thread communication */
+
+#define RT_USING_SEMAPHORE
+#define RT_USING_MUTEX
+#define RT_USING_EVENT
+#define RT_USING_MAILBOX
+#define RT_USING_MESSAGEQUEUE
+
+/* Memory Management */
+
+#define RT_USING_NOHEAP
+
+/* Kernel Device Object */
+
+#define RT_USING_DEVICE
+#define RT_USING_CONSOLE
+#define RT_CONSOLEBUF_SIZE 128
+#define RT_CONSOLE_DEVICE_NAME "uarths"
+#define RT_VER_NUM 0x40004
+#define ARCH_RISCV_FPU
+#define ARCH_RISCV_FPU_S
+
+/* RT-Thread Components */
+
+#define RT_USING_COMPONENTS_INIT
+#define RT_USING_USER_MAIN
+#define RT_MAIN_THREAD_STACK_SIZE 8192
+#define RT_MAIN_THREAD_PRIORITY 10
+
+/* C++ features */
+
+
+/* Command shell */
+
+
+/* Device virtual file system */
+
+
+/* Device Drivers */
+
+
+/* Using USB */
+
+
+/* POSIX layer and C standard library */
+
+
+/* Network */
+
+/* Socket abstraction layer */
+
+
+/* Network interface device */
+
+
+/* light weight TCP/IP stack */
+
+
+/* AT commands */
+
+
+/* VBUS(Virtual Software BUS) */
+
+
+/* Utilities */
+
+
+/* RT-Thread Utestcases */
+
+
+/* RT-Thread online packages */
+
+/* IoT - internet of things */
+
+
+/* Wi-Fi */
+
+/* Marvell WiFi */
+
+
+/* Wiced WiFi */
+
+
+/* IoT Cloud */
+
+
+/* security packages */
+
+
+/* language packages */
+
+
+/* multimedia packages */
+
+
+/* tools packages */
+
+
+/* system packages */
+
+/* acceleration: Assembly language or algorithmic acceleration packages */
+
+
+/* Micrium: Micrium software products porting for RT-Thread */
+
+
+/* peripheral libraries and drivers */
+
+
+/* AI packages */
+
+
+/* miscellaneous packages */
+
+/* samples: kernel and components samples */
+
+
+/* entertainment: terminal games and other interesting software packages */
+
+#define PKG_USING_BL_MCU_SDK
+#define PKG_USING_BL_MCU_SDK_LATEST_VERSION
+#define BSP_USING_DEBUG_UART
+#define BOARD_BL602
+
+#endif
diff --git a/bsp/bouffalolab/bl602/rtconfig.py b/bsp/bouffalolab/bl602/rtconfig.py
new file mode 100644
index 0000000000000000000000000000000000000000..6415cac0c22e282f46e7016d9eb804b74ffaf461
--- /dev/null
+++ b/bsp/bouffalolab/bl602/rtconfig.py
@@ -0,0 +1,54 @@
+import os
+
+# toolchains options
+ARCH        ='risc-v'
+CPU         ='e24'
+CROSS_TOOL  ='gcc'
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = r'../..'
+
+if os.getenv('RTT_CC'):
+    CROSS_TOOL = os.getenv('RTT_CC')
+
+if  CROSS_TOOL == 'gcc':
+    PLATFORM    = 'gcc'
+    EXEC_PATH   = 'D:/EmbeddedSoftware/toolchain_gcc_sifive_windows/bin'
+else:
+    print('Please make sure your toolchains is GNU GCC!')
+    exit(0)
+
+BUILD = 'debug'
+
+if PLATFORM == 'gcc':
+    # toolchains
+    PREFIX  = 'riscv64-unknown-elf-'
+    CC      = PREFIX + 'gcc'
+    CXX     = PREFIX + 'g++'
+    AS      = PREFIX + 'gcc'
+    AR      = PREFIX + 'ar'
+    LINK    = PREFIX + 'gcc'
+    TARGET_EXT = 'elf'
+    SIZE    = PREFIX + 'size'
+    OBJDUMP = PREFIX + 'objdump'
+    OBJCPY  = PREFIX + 'objcopy'
+
+    DEVICE  = ' -mcmodel=medany -march=rv32imafc -mabi=ilp32f -fsingle-precision-constant'
+    CFLAGS  = DEVICE + ' -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields'
+    AFLAGS  = ' -c' + DEVICE + ' -x assembler-with-cpp'
+    LFLAGS  = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T board/bouffalo.ld'
+    CPATH   = ''
+    LPATH   = ''
+
+    if BUILD == 'debug':
+        CFLAGS += ' -O0 -ggdb'
+        AFLAGS += ' -ggdb'
+    else:
+        CFLAGS += ' -O2 -Os'
+
+    CXXFLAGS = CFLAGS
+
+DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtt.asm\n'
+POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
diff --git a/bsp/bouffalolab/bl702/.config b/bsp/bouffalolab/bl702/.config
new file mode 100644
index 0000000000000000000000000000000000000000..504d04f38f9a5a378c27e147b61de27df3e2a234
--- /dev/null
+++ b/bsp/bouffalolab/bl702/.config
@@ -0,0 +1,548 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# RT-Thread Project Configuration
+#
+
+#
+# RT-Thread Kernel
+#
+CONFIG_RT_NAME_MAX=8
+# CONFIG_RT_USING_ARCH_DATA_TYPE is not set
+# CONFIG_RT_USING_SMP is not set
+CONFIG_RT_ALIGN_SIZE=8
+# CONFIG_RT_THREAD_PRIORITY_8 is not set
+CONFIG_RT_THREAD_PRIORITY_32=y
+# CONFIG_RT_THREAD_PRIORITY_256 is not set
+CONFIG_RT_THREAD_PRIORITY_MAX=32
+CONFIG_RT_TICK_PER_SECOND=1000
+# CONFIG_RT_USING_OVERFLOW_CHECK is not set
+# CONFIG_RT_USING_HOOK is not set
+# CONFIG_RT_USING_IDLE_HOOK is not set
+CONFIG_IDLE_THREAD_STACK_SIZE=4096
+# CONFIG_RT_USING_TIMER_SOFT is not set
+
+#
+# kservice optimization
+#
+# CONFIG_RT_KSERVICE_USING_STDLIB is not set
+# CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
+# CONFIG_RT_USING_ASM_MEMCPY is not set
+# CONFIG_RT_DEBUG is not set
+
+#
+# Inter-Thread communication
+#
+CONFIG_RT_USING_SEMAPHORE=y
+CONFIG_RT_USING_MUTEX=y
+CONFIG_RT_USING_EVENT=y
+CONFIG_RT_USING_MAILBOX=y
+CONFIG_RT_USING_MESSAGEQUEUE=y
+# CONFIG_RT_USING_SIGNALS is not set
+
+#
+# Memory Management
+#
+# CONFIG_RT_USING_MEMPOOL is not set
+# CONFIG_RT_USING_MEMHEAP is not set
+CONFIG_RT_USING_NOHEAP=y
+# CONFIG_RT_USING_SMALL_MEM is not set
+# CONFIG_RT_USING_SLAB is not set
+# CONFIG_RT_USING_USERHEAP is not set
+# CONFIG_RT_USING_MEMTRACE is not set
+# CONFIG_RT_USING_HEAP is not set
+
+#
+# Kernel Device Object
+#
+CONFIG_RT_USING_DEVICE=y
+# CONFIG_RT_USING_DEVICE_OPS is not set
+# CONFIG_RT_USING_INTERRUPT_INFO is not set
+CONFIG_RT_USING_CONSOLE=y
+CONFIG_RT_CONSOLEBUF_SIZE=128
+CONFIG_RT_CONSOLE_DEVICE_NAME="uarths"
+# CONFIG_RT_PRINTF_LONGLONG is not set
+CONFIG_RT_VER_NUM=0x40004
+# CONFIG_RT_USING_CPU_FFS is not set
+CONFIG_ARCH_RISCV_FPU=y
+CONFIG_ARCH_RISCV_FPU_S=y
+# CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
+
+#
+# RT-Thread Components
+#
+CONFIG_RT_USING_COMPONENTS_INIT=y
+CONFIG_RT_USING_USER_MAIN=y
+CONFIG_RT_MAIN_THREAD_STACK_SIZE=8192
+CONFIG_RT_MAIN_THREAD_PRIORITY=10
+
+#
+# C++ features
+#
+# CONFIG_RT_USING_CPLUSPLUS is not set
+
+#
+# Command shell
+#
+# CONFIG_RT_USING_FINSH is not set
+# CONFIG_RT_USING_MSH is not set
+
+#
+# Device virtual file system
+#
+# CONFIG_RT_USING_DFS is not set
+
+#
+# Device Drivers
+#
+# CONFIG_RT_USING_DEVICE_IPC is not set
+# CONFIG_RT_USING_SERIAL is not set
+# CONFIG_RT_USING_CAN is not set
+# CONFIG_RT_USING_HWTIMER is not set
+# CONFIG_RT_USING_CPUTIME is not set
+# CONFIG_RT_USING_I2C is not set
+# CONFIG_RT_USING_PHY is not set
+# CONFIG_RT_USING_PIN is not set
+# CONFIG_RT_USING_ADC is not set
+# CONFIG_RT_USING_DAC is not set
+# CONFIG_RT_USING_PWM is not set
+# CONFIG_RT_USING_MTD_NOR is not set
+# CONFIG_RT_USING_MTD_NAND is not set
+# CONFIG_RT_USING_PM is not set
+# CONFIG_RT_USING_RTC is not set
+# CONFIG_RT_USING_SDIO is not set
+# CONFIG_RT_USING_SPI is not set
+# CONFIG_RT_USING_WDT is not set
+# CONFIG_RT_USING_AUDIO is not set
+# CONFIG_RT_USING_SENSOR is not set
+# CONFIG_RT_USING_TOUCH is not set
+# CONFIG_RT_USING_HWCRYPTO is not set
+# CONFIG_RT_USING_PULSE_ENCODER is not set
+# CONFIG_RT_USING_INPUT_CAPTURE is not set
+# CONFIG_RT_USING_WIFI is not set
+
+#
+# Using USB
+#
+# CONFIG_RT_USING_USB_HOST is not set
+# CONFIG_RT_USING_USB_DEVICE is not set
+
+#
+# POSIX layer and C standard library
+#
+# CONFIG_RT_USING_LIBC is not set
+# CONFIG_RT_USING_PTHREADS is not set
+# CONFIG_RT_LIBC_USING_TIME is not set
+
+#
+# Network
+#
+
+#
+# Socket abstraction layer
+#
+# CONFIG_RT_USING_SAL is not set
+
+#
+# Network interface device
+#
+# CONFIG_RT_USING_NETDEV is not set
+
+#
+# light weight TCP/IP stack
+#
+# CONFIG_RT_USING_LWIP is not set
+
+#
+# AT commands
+#
+# CONFIG_RT_USING_AT is not set
+
+#
+# VBUS(Virtual Software BUS)
+#
+# CONFIG_RT_USING_VBUS is not set
+
+#
+# Utilities
+#
+# CONFIG_RT_USING_RYM is not set
+# CONFIG_RT_USING_ULOG is not set
+# CONFIG_RT_USING_UTEST is not set
+# CONFIG_RT_USING_RT_LINK is not set
+
+#
+# RT-Thread Utestcases
+#
+# CONFIG_RT_USING_UTESTCASES is not set
+
+#
+# RT-Thread online packages
+#
+
+#
+# IoT - internet of things
+#
+# CONFIG_PKG_USING_LORAWAN_DRIVER is not set
+# CONFIG_PKG_USING_PAHOMQTT is not set
+# CONFIG_PKG_USING_UMQTT is not set
+# CONFIG_PKG_USING_WEBCLIENT is not set
+# CONFIG_PKG_USING_WEBNET is not set
+# CONFIG_PKG_USING_MONGOOSE is not set
+# CONFIG_PKG_USING_MYMQTT is not set
+# CONFIG_PKG_USING_KAWAII_MQTT is not set
+# CONFIG_PKG_USING_BC28_MQTT is not set
+# CONFIG_PKG_USING_WEBTERMINAL is not set
+# CONFIG_PKG_USING_CJSON is not set
+# CONFIG_PKG_USING_JSMN is not set
+# CONFIG_PKG_USING_LIBMODBUS is not set
+# CONFIG_PKG_USING_FREEMODBUS is not set
+# CONFIG_PKG_USING_LJSON is not set
+# CONFIG_PKG_USING_EZXML is not set
+# CONFIG_PKG_USING_NANOPB is not set
+
+#
+# Wi-Fi
+#
+
+#
+# Marvell WiFi
+#
+# CONFIG_PKG_USING_WLANMARVELL is not set
+
+#
+# Wiced WiFi
+#
+# CONFIG_PKG_USING_WLAN_WICED is not set
+# CONFIG_PKG_USING_RW007 is not set
+# CONFIG_PKG_USING_COAP is not set
+# CONFIG_PKG_USING_NOPOLL is not set
+# CONFIG_PKG_USING_NETUTILS is not set
+# CONFIG_PKG_USING_CMUX is not set
+# CONFIG_PKG_USING_PPP_DEVICE is not set
+# CONFIG_PKG_USING_AT_DEVICE is not set
+# CONFIG_PKG_USING_ATSRV_SOCKET is not set
+# CONFIG_PKG_USING_WIZNET is not set
+# CONFIG_PKG_USING_ZB_COORDINATOR is not set
+
+#
+# IoT Cloud
+#
+# CONFIG_PKG_USING_ONENET is not set
+# CONFIG_PKG_USING_GAGENT_CLOUD is not set
+# CONFIG_PKG_USING_ALI_IOTKIT is not set
+# CONFIG_PKG_USING_AZURE is not set
+# CONFIG_PKG_USING_TENCENT_IOT_EXPLORER is not set
+# CONFIG_PKG_USING_JIOT-C-SDK is not set
+# CONFIG_PKG_USING_UCLOUD_IOT_SDK is not set
+# CONFIG_PKG_USING_JOYLINK is not set
+# CONFIG_PKG_USING_NIMBLE is not set
+# CONFIG_PKG_USING_OTA_DOWNLOADER is not set
+# CONFIG_PKG_USING_IPMSG is not set
+# CONFIG_PKG_USING_LSSDP is not set
+# CONFIG_PKG_USING_AIRKISS_OPEN is not set
+# CONFIG_PKG_USING_LIBRWS is not set
+# CONFIG_PKG_USING_TCPSERVER is not set
+# CONFIG_PKG_USING_PROTOBUF_C is not set
+# CONFIG_PKG_USING_DLT645 is not set
+# CONFIG_PKG_USING_QXWZ is not set
+# CONFIG_PKG_USING_SMTP_CLIENT is not set
+# CONFIG_PKG_USING_ABUP_FOTA is not set
+# CONFIG_PKG_USING_LIBCURL2RTT is not set
+# CONFIG_PKG_USING_CAPNP is not set
+# CONFIG_PKG_USING_RT_CJSON_TOOLS is not set
+# CONFIG_PKG_USING_AGILE_TELNET is not set
+# CONFIG_PKG_USING_NMEALIB is not set
+# CONFIG_PKG_USING_AGILE_JSMN is not set
+# CONFIG_PKG_USING_PDULIB is not set
+# CONFIG_PKG_USING_BTSTACK is not set
+# CONFIG_PKG_USING_LORAWAN_ED_STACK is not set
+# CONFIG_PKG_USING_WAYZ_IOTKIT is not set
+# CONFIG_PKG_USING_MAVLINK is not set
+# CONFIG_PKG_USING_RAPIDJSON is not set
+# CONFIG_PKG_USING_BSAL is not set
+# CONFIG_PKG_USING_AGILE_MODBUS is not set
+# CONFIG_PKG_USING_AGILE_FTP is not set
+# CONFIG_PKG_USING_EMBEDDEDPROTO is not set
+# CONFIG_PKG_USING_RT_LINK_HW is not set
+# CONFIG_PKG_USING_LORA_PKT_FWD is not set
+# CONFIG_PKG_USING_LORA_GW_DRIVER_LIB is not set
+# CONFIG_PKG_USING_LORA_PKT_SNIFFER is not set
+# CONFIG_PKG_USING_HM is not set
+
+#
+# security packages
+#
+# CONFIG_PKG_USING_MBEDTLS is not set
+# CONFIG_PKG_USING_libsodium is not set
+# CONFIG_PKG_USING_TINYCRYPT is not set
+# CONFIG_PKG_USING_TFM is not set
+# CONFIG_PKG_USING_YD_CRYPTO is not set
+
+#
+# language packages
+#
+# CONFIG_PKG_USING_LUA is not set
+# CONFIG_PKG_USING_JERRYSCRIPT is not set
+# CONFIG_PKG_USING_MICROPYTHON is not set
+# CONFIG_PKG_USING_PIKASCRIPT is not set
+
+#
+# multimedia packages
+#
+# CONFIG_PKG_USING_OPENMV is not set
+# CONFIG_PKG_USING_MUPDF is not set
+# CONFIG_PKG_USING_STEMWIN is not set
+# CONFIG_PKG_USING_WAVPLAYER is not set
+# CONFIG_PKG_USING_TJPGD is not set
+# CONFIG_PKG_USING_PDFGEN is not set
+# CONFIG_PKG_USING_HELIX is not set
+# CONFIG_PKG_USING_AZUREGUIX is not set
+# CONFIG_PKG_USING_TOUCHGFX2RTT is not set
+# CONFIG_PKG_USING_NUEMWIN is not set
+# CONFIG_PKG_USING_MP3PLAYER is not set
+# CONFIG_PKG_USING_TINYJPEG is not set
+# CONFIG_PKG_USING_UGUI is not set
+
+#
+# tools packages
+#
+# CONFIG_PKG_USING_CMBACKTRACE is not set
+# CONFIG_PKG_USING_EASYFLASH is not set
+# CONFIG_PKG_USING_EASYLOGGER is not set
+# CONFIG_PKG_USING_SYSTEMVIEW is not set
+# CONFIG_PKG_USING_SEGGER_RTT is not set
+# CONFIG_PKG_USING_RDB is not set
+# CONFIG_PKG_USING_QRCODE is not set
+# CONFIG_PKG_USING_ULOG_EASYFLASH is not set
+# CONFIG_PKG_USING_ULOG_FILE is not set
+# CONFIG_PKG_USING_LOGMGR is not set
+# CONFIG_PKG_USING_ADBD is not set
+# CONFIG_PKG_USING_COREMARK is not set
+# CONFIG_PKG_USING_DHRYSTONE is not set
+# CONFIG_PKG_USING_MEMORYPERF is not set
+# CONFIG_PKG_USING_NR_MICRO_SHELL is not set
+# CONFIG_PKG_USING_CHINESE_FONT_LIBRARY is not set
+# CONFIG_PKG_USING_LUNAR_CALENDAR is not set
+# CONFIG_PKG_USING_BS8116A is not set
+# CONFIG_PKG_USING_GPS_RMC is not set
+# CONFIG_PKG_USING_URLENCODE is not set
+# CONFIG_PKG_USING_UMCN is not set
+# CONFIG_PKG_USING_LWRB2RTT is not set
+# CONFIG_PKG_USING_CPU_USAGE is not set
+# CONFIG_PKG_USING_GBK2UTF8 is not set
+# CONFIG_PKG_USING_VCONSOLE is not set
+# CONFIG_PKG_USING_KDB is not set
+# CONFIG_PKG_USING_WAMR is not set
+# CONFIG_PKG_USING_MICRO_XRCE_DDS_CLIENT is not set
+# CONFIG_PKG_USING_LWLOG is not set
+# CONFIG_PKG_USING_ANV_TRACE is not set
+# CONFIG_PKG_USING_ANV_MEMLEAK is not set
+# CONFIG_PKG_USING_ANV_TESTSUIT is not set
+# CONFIG_PKG_USING_ANV_BENCH is not set
+# CONFIG_PKG_USING_DEVMEM is not set
+# CONFIG_PKG_USING_REGEX is not set
+# CONFIG_PKG_USING_MEM_SANDBOX is not set
+# CONFIG_PKG_USING_SOLAR_TERMS is not set
+# CONFIG_PKG_USING_GAN_ZHI is not set
+
+#
+# system packages
+#
+
+#
+# acceleration: Assembly language or algorithmic acceleration packages
+#
+# CONFIG_PKG_USING_RT_MEMCPY_CM is not set
+# CONFIG_PKG_USING_QFPLIB_M0_FULL is not set
+# CONFIG_PKG_USING_QFPLIB_M0_TINY is not set
+# CONFIG_PKG_USING_QFPLIB_M3 is not set
+
+#
+# Micrium: Micrium software products porting for RT-Thread
+#
+# CONFIG_PKG_USING_UCOSIII_WRAPPER is not set
+# CONFIG_PKG_USING_UCOSII_WRAPPER is not set
+# CONFIG_PKG_USING_UC_CRC is not set
+# CONFIG_PKG_USING_UC_CLK is not set
+# CONFIG_PKG_USING_UC_COMMON is not set
+# CONFIG_PKG_USING_UC_MODBUS is not set
+# CONFIG_PKG_USING_GUIENGINE is not set
+# CONFIG_PKG_USING_CAIRO is not set
+# CONFIG_PKG_USING_PIXMAN is not set
+# CONFIG_PKG_USING_PARTITION is not set
+# CONFIG_PKG_USING_FAL is not set
+# CONFIG_PKG_USING_FLASHDB is not set
+# CONFIG_PKG_USING_SQLITE is not set
+# CONFIG_PKG_USING_RTI is not set
+# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
+# CONFIG_PKG_USING_CMSIS is not set
+# CONFIG_PKG_USING_DFS_YAFFS is not set
+# CONFIG_PKG_USING_LITTLEFS is not set
+# CONFIG_PKG_USING_DFS_JFFS2 is not set
+# CONFIG_PKG_USING_DFS_UFFS is not set
+# CONFIG_PKG_USING_LWEXT4 is not set
+# CONFIG_PKG_USING_THREAD_POOL is not set
+# CONFIG_PKG_USING_ROBOTS is not set
+# CONFIG_PKG_USING_EV is not set
+# CONFIG_PKG_USING_SYSWATCH is not set
+# CONFIG_PKG_USING_SYS_LOAD_MONITOR is not set
+# CONFIG_PKG_USING_PLCCORE is not set
+# CONFIG_PKG_USING_RAMDISK is not set
+# CONFIG_PKG_USING_MININI is not set
+# CONFIG_PKG_USING_QBOOT is not set
+# CONFIG_PKG_USING_PPOOL is not set
+# CONFIG_PKG_USING_OPENAMP is not set
+# CONFIG_PKG_USING_RT_KPRINTF_THREADSAFE is not set
+# CONFIG_PKG_USING_LPM is not set
+# CONFIG_PKG_USING_TLSF is not set
+# CONFIG_PKG_USING_EVENT_RECORDER is not set
+# CONFIG_PKG_USING_ARM_2D is not set
+# CONFIG_PKG_USING_WCWIDTH is not set
+# CONFIG_PKG_USING_MCUBOOT is not set
+
+#
+# peripheral libraries and drivers
+#
+# CONFIG_PKG_USING_SENSORS_DRIVERS is not set
+# CONFIG_PKG_USING_REALTEK_AMEBA is not set
+# CONFIG_PKG_USING_SHT2X is not set
+# CONFIG_PKG_USING_SHT3X is not set
+# CONFIG_PKG_USING_AS7341 is not set
+# CONFIG_PKG_USING_STM32_SDIO is not set
+# CONFIG_PKG_USING_ICM20608 is not set
+# CONFIG_PKG_USING_U8G2 is not set
+# CONFIG_PKG_USING_BUTTON is not set
+# CONFIG_PKG_USING_PCF8574 is not set
+# CONFIG_PKG_USING_SX12XX is not set
+# CONFIG_PKG_USING_SIGNAL_LED is not set
+# CONFIG_PKG_USING_LEDBLINK is not set
+# CONFIG_PKG_USING_LITTLED is not set
+# CONFIG_PKG_USING_LKDGUI is not set
+# CONFIG_PKG_USING_NRF5X_SDK is not set
+# CONFIG_PKG_USING_NRFX is not set
+# CONFIG_PKG_USING_WM_LIBRARIES is not set
+# CONFIG_PKG_USING_KENDRYTE_SDK is not set
+# CONFIG_PKG_USING_INFRARED is not set
+# CONFIG_PKG_USING_AGILE_BUTTON is not set
+# CONFIG_PKG_USING_AGILE_LED is not set
+# CONFIG_PKG_USING_AT24CXX is not set
+# CONFIG_PKG_USING_MOTIONDRIVER2RTT is not set
+# CONFIG_PKG_USING_AD7746 is not set
+# CONFIG_PKG_USING_PCA9685 is not set
+# CONFIG_PKG_USING_I2C_TOOLS is not set
+# CONFIG_PKG_USING_NRF24L01 is not set
+# CONFIG_PKG_USING_TOUCH_DRIVERS is not set
+# CONFIG_PKG_USING_MAX17048 is not set
+# CONFIG_PKG_USING_RPLIDAR is not set
+# CONFIG_PKG_USING_AS608 is not set
+# CONFIG_PKG_USING_RC522 is not set
+# CONFIG_PKG_USING_WS2812B is not set
+# CONFIG_PKG_USING_EMBARC_BSP is not set
+# CONFIG_PKG_USING_EXTERN_RTC_DRIVERS is not set
+# CONFIG_PKG_USING_MULTI_RTIMER is not set
+# CONFIG_PKG_USING_MAX7219 is not set
+# CONFIG_PKG_USING_BEEP is not set
+# CONFIG_PKG_USING_EASYBLINK is not set
+# CONFIG_PKG_USING_PMS_SERIES is not set
+# CONFIG_PKG_USING_CAN_YMODEM is not set
+# CONFIG_PKG_USING_LORA_RADIO_DRIVER is not set
+# CONFIG_PKG_USING_QLED is not set
+# CONFIG_PKG_USING_PAJ7620 is not set
+# CONFIG_PKG_USING_AGILE_CONSOLE is not set
+# CONFIG_PKG_USING_LD3320 is not set
+# CONFIG_PKG_USING_WK2124 is not set
+# CONFIG_PKG_USING_LY68L6400 is not set
+# CONFIG_PKG_USING_DM9051 is not set
+# CONFIG_PKG_USING_SSD1306 is not set
+# CONFIG_PKG_USING_QKEY is not set
+# CONFIG_PKG_USING_RS485 is not set
+# CONFIG_PKG_USING_NES is not set
+# CONFIG_PKG_USING_VIRTUAL_SENSOR is not set
+# CONFIG_PKG_USING_VDEVICE is not set
+# CONFIG_PKG_USING_SGM706 is not set
+# CONFIG_PKG_USING_STM32WB55_SDK is not set
+# CONFIG_PKG_USING_RDA58XX is not set
+# CONFIG_PKG_USING_LIBNFC is not set
+# CONFIG_PKG_USING_MFOC is not set
+# CONFIG_PKG_USING_TMC51XX is not set
+# CONFIG_PKG_USING_TCA9534 is not set
+# CONFIG_PKG_USING_KOBUKI is not set
+# CONFIG_PKG_USING_ROSSERIAL is not set
+# CONFIG_PKG_USING_MICRO_ROS is not set
+# CONFIG_PKG_USING_MCP23008 is not set
+# CONFIG_PKG_USING_BLUETRUM_SDK is not set
+# CONFIG_PKG_USING_MISAKA_AT24CXX is not set
+# CONFIG_PKG_USING_MISAKA_RGB_BLING is not set
+
+#
+# AI packages
+#
+# CONFIG_PKG_USING_LIBANN is not set
+# CONFIG_PKG_USING_NNOM is not set
+# CONFIG_PKG_USING_ONNX_BACKEND is not set
+# CONFIG_PKG_USING_ONNX_PARSER is not set
+# CONFIG_PKG_USING_TENSORFLOWLITEMICRO is not set
+# CONFIG_PKG_USING_ELAPACK is not set
+# CONFIG_PKG_USING_ULAPACK is not set
+# CONFIG_PKG_USING_QUEST is not set
+# CONFIG_PKG_USING_NAXOS is not set
+
+#
+# miscellaneous packages
+#
+
+#
+# samples: kernel and components samples
+#
+# CONFIG_PKG_USING_KERNEL_SAMPLES is not set
+# CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
+# CONFIG_PKG_USING_NETWORK_SAMPLES is not set
+# CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
+
+#
+# entertainment: terminal games and other interesting software packages
+#
+# CONFIG_PKG_USING_CMATRIX is not set
+# CONFIG_PKG_USING_SL is not set
+# CONFIG_PKG_USING_CAL is not set
+# CONFIG_PKG_USING_ACLOCK is not set
+# CONFIG_PKG_USING_THREES is not set
+# CONFIG_PKG_USING_2048 is not set
+# CONFIG_PKG_USING_SNAKE is not set
+# CONFIG_PKG_USING_TETRIS is not set
+# CONFIG_PKG_USING_DONUT is not set
+# CONFIG_PKG_USING_LIBCSV is not set
+# CONFIG_PKG_USING_OPTPARSE is not set
+# CONFIG_PKG_USING_FASTLZ is not set
+# CONFIG_PKG_USING_MINILZO is not set
+# CONFIG_PKG_USING_QUICKLZ is not set
+# CONFIG_PKG_USING_LZMA is not set
+# CONFIG_PKG_USING_MULTIBUTTON is not set
+# CONFIG_PKG_USING_FLEXIBLE_BUTTON is not set
+# CONFIG_PKG_USING_CANFESTIVAL is not set
+# CONFIG_PKG_USING_ZLIB is not set
+# CONFIG_PKG_USING_MINIZIP is not set
+# CONFIG_PKG_USING_DSTR is not set
+# CONFIG_PKG_USING_TINYFRAME is not set
+# CONFIG_PKG_USING_KENDRYTE_DEMO is not set
+# CONFIG_PKG_USING_DIGITALCTRL is not set
+# CONFIG_PKG_USING_UPACKER is not set
+# CONFIG_PKG_USING_UPARAM is not set
+# CONFIG_PKG_USING_HELLO is not set
+# CONFIG_PKG_USING_VI is not set
+# CONFIG_PKG_USING_KI is not set
+# CONFIG_PKG_USING_ARMv7M_DWT is not set
+# CONFIG_PKG_USING_VT100 is not set
+# CONFIG_PKG_USING_UKAL is not set
+# CONFIG_PKG_USING_CRCLIB is not set
+# CONFIG_PKG_USING_LWGPS is not set
+# CONFIG_PKG_USING_STATE_MACHINE is not set
+# CONFIG_PKG_USING_MCURSES is not set
+# CONFIG_PKG_USING_COWSAY is not set
+# CONFIG_PKG_USING_TERMBOX is not set
+CONFIG_PKG_USING_BL_MCU_SDK=y
+CONFIG_PKG_BL_MCU_SDK_PATH="/packages/misc/bouffalolab_sdk"
+CONFIG_PKG_USING_BL_MCU_SDK_LATEST_VERSION=y
+CONFIG_PKG_BL_MCU_SDK_VER="latest"
+CONFIG_BSP_USING_DEBUG_UART=y
+CONFIG_BOARD_BL602=y
diff --git a/bsp/bouffalolab/bl702/Kconfig b/bsp/bouffalolab/bl702/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..fe108e4c97c8a7e45e766bcf8802c2becab03bf0
--- /dev/null
+++ b/bsp/bouffalolab/bl702/Kconfig
@@ -0,0 +1,30 @@
+mainmenu "RT-Thread Project Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../../.."
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+source "board/Kconfig"
+
+config BOARD_BL702
+    bool
+    select ARCH_RISCV_FPU_S
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    select PKG_USING_BL_MCU_SDK
+    default y
+
+
diff --git a/bsp/bouffalolab/bl702/README.md b/bsp/bouffalolab/bl702/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..a751dba7460b2ca076a4f8c799e509af9cf63e9d
--- /dev/null
+++ b/bsp/bouffalolab/bl702/README.md
@@ -0,0 +1,62 @@
+# BL706 IOT 开发板 BSP 说明
+
+## 简介
+
+BL706 是一款 BLE + Zigbee 组合的芯片组，用于低功耗物联网应用开发。无线子系统包含 2.4G 无线电，BLE5.0 和 802.15.4 基带/MAC 设计。微控制器子系统包含一个低功耗的 32 位 RISC CPU，高速缓存和存储器。电源管理单元控制低功耗模式。此外，还支持各种安全性能。外围接口包括 USB2.0，以太网，红外遥控器，SPI，UART，ISO 17987，I2C，I2S，PWM，QDEC，KeyScan，ADC，DAC，PIR 和 GPIO。
+
+板载主要资源如下：
+
+| 硬件      | 描述          |
+| --------- | -------------|
+| 芯片型号  | BL706         |
+| CPU       | rv32imafc    |
+| 主频      | 144M          |
+| 片内SRAM  | 132K          |
+| 片内FLASH | 1024K         |
+
+## 编译说明
+
+BL706 IOT 开发板支持CDK、 GCC编译器，以下是具体版本信息：
+
+| IDE/编译器 | 已测试版本                   |
+| ---------- | ---------------------------- |
+| GCC        | GCC 10.2.0 20210819 (release) |
+
+## 外设支持
+
+## 使用说明
+
+编译BL706，需要有 RT-Thread 的代码，因为 BL706 的 sdk 是以软件包方式，所以需要在 bsp/bouffalolab 下做软件包更新。Windows 下推荐使用 env 工具，然后在 console 下进入 bsp/bouffalolab 目录中，运行：
+
+    cd bsp/bouffalolab
+    pkgs --update
+
+下载risc-v的工具链，[下载地址](https://gitee.com/bouffalolab/toolchain_gcc_sifive_windows)
+
+更新完软件包后，在`rtconfig.py`中将risc-v工具链的本地路径加入到 **EXEC_PATH** 参数。
+
+### 代码烧录
+
+- 见 [bl_dev_cube](http://bouffalolab.gitee.io/bl_mcu_sdk/get_started/bl_dev_cube.html)
+
+### 实验现象
+
+连接开发板对应串口到 PC , 在终端工具里打开相应的串口（115200-8-1-N），复位设备后，在串口上可以看到 RT-Thread 的输出信息:
+
+```
+ \ | /
+- RT -     Thread Operating System
+ / | \     4.0.4 build Sep 28 2021
+ 2006 - 2021 Copyright by rt-thread team
+Hello, world
+```
+
+## 联系人信息
+
+维护人：
+
+- [sakumisu](https://github.com/sakumisu)
+
+## 参考
+
+* [BL_MCU_SDK](https://gitee.com/bouffalolab/bl_mcu_sdk)
diff --git a/bsp/bouffalolab/bl702/SConscript b/bsp/bouffalolab/bl702/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..c7ef7659ecea92b1dd9b71a97736a8552ee02551
--- /dev/null
+++ b/bsp/bouffalolab/bl702/SConscript
@@ -0,0 +1,14 @@
+# for module compiling
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
diff --git a/bsp/bouffalolab/bl702/SConstruct b/bsp/bouffalolab/bl702/SConstruct
new file mode 100644
index 0000000000000000000000000000000000000000..755cc2ddbb9a17d0bfc4c6d80194a6c82709af15
--- /dev/null
+++ b/bsp/bouffalolab/bl702/SConstruct
@@ -0,0 +1,45 @@
+import os
+import sys
+import rtconfig
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+try:
+    from building import *
+except:
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
+    exit(-1)
+
+TARGET = 'rt-thread.' + rtconfig.TARGET_EXT
+
+DefaultEnvironment(tools=[])
+env = Environment(tools = ['mingw'],
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    CXX = rtconfig.CXX, CXXFLAGS = rtconfig.CXXFLAGS,
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+env['ASCOM'] = env['ASPPCOM']
+
+if rtconfig.PLATFORM == 'iar':
+    env.Replace(CCCOM = ['$CC $CCFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
+    env.Replace(ARFLAGS = [''])
+    env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+SDK_ROOT = os.path.abspath('./')
+
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
+
+# make a building
+DoBuilding(TARGET, objs)
diff --git a/bsp/bouffalolab/bl702/applications/SConscript b/bsp/bouffalolab/bl702/applications/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..c583d3016e0f932c30df95aacb80ae6a049bb0f4
--- /dev/null
+++ b/bsp/bouffalolab/bl702/applications/SConscript
@@ -0,0 +1,9 @@
+from building import *
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c') + Glob('*.cpp')
+CPPPATH = [cwd]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')
diff --git a/bsp/bouffalolab/bl702/applications/main.c b/bsp/bouffalolab/bl702/applications/main.c
new file mode 100644
index 0000000000000000000000000000000000000000..84c5399b7fb71ced58977caeea93d4dd3cfa1cb5
--- /dev/null
+++ b/bsp/bouffalolab/bl702/applications/main.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018/09/30     Bernard      The first version
+ */
+
+#include <rtthread.h>
+#include <stdio.h>
+
+#include <rtconfig.h>
+
+int main(void)
+{
+    rt_kprintf("Hello, world\n");
+
+    return 0;
+}
diff --git a/bsp/bouffalolab/bl702/board/Kconfig b/bsp/bouffalolab/bl702/board/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..5061315ac115b96ae007afed9f6eb51236343c4b
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/Kconfig
@@ -0,0 +1,3 @@
+config BSP_USING_DEBUG_UART
+    bool "Enable DEBUG UART"
+    default n
diff --git a/bsp/bouffalolab/bl702/board/SConscript b/bsp/bouffalolab/bl702/board/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..51e5ae86e1723327a8b5fcb4a2cef2e1dfafdf11
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/SConscript
@@ -0,0 +1,23 @@
+import os
+import rtconfig
+from building import *
+
+cwd = GetCurrentDir()
+
+path =  []
+
+src = Split('''
+board.c
+''')
+
+if GetDepend('BSP_USING_DEBUG_UART'):
+    src += ['drv_uart_no_device.c']
+
+src += ['startup_gcc.S']
+
+path +=  [cwd]
+
+CPPDEFINES = []
+
+group = DefineGroup('board', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
+Return('group')
diff --git a/bsp/bouffalolab/bl702/board/board.c b/bsp/bouffalolab/bl702/board/board.c
new file mode 100644
index 0000000000000000000000000000000000000000..fe84cfec4e31d558663580c3b5e0419bc6964b5a
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/board.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#include <rthw.h>
+#include "board.h"
+
+#ifdef BSP_USING_DEBUG_UART
+#include "drv_uart_no_device.h"
+#endif
+
+extern void board_init(void);
+
+void systick_isr(void)
+{
+    rt_interrupt_enter();
+    rt_tick_increase();
+    rt_interrupt_leave();
+}
+
+void rt_hw_board_init(void)
+{
+    board_init();
+    mtimer_set_alarm_time(RT_TICK_PER_SECOND, systick_isr);
+
+    /* USART driver initialization is open by default */
+#ifdef BSP_USING_DEBUG_UART
+    rt_hw_debug_uart_init();
+#endif
+
+#if defined(RT_USING_HEAP)
+    rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
+#endif
+
+#ifdef RT_USING_COMPONENTS_INIT
+    rt_components_board_init();
+#endif
+#ifdef RT_USING_DEVICE
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif
+
+    return;
+}
+
diff --git a/bsp/bouffalolab/bl702/board/board.h b/bsp/bouffalolab/bl702/board/board.h
new file mode 100644
index 0000000000000000000000000000000000000000..dc1ccfdcd525588317501a76c323875542d1a901
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/board.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#ifndef __BOARD__
+#define __BOARD__
+
+#include "hal_clock.h"
+#include "hal_mtimer.h"
+
+#endif
diff --git a/bsp/bouffalolab/bl702/board/bouffalo.ld b/bsp/bouffalolab/bl702/board/bouffalo.ld
new file mode 100644
index 0000000000000000000000000000000000000000..b7012bfce509f14fa4f439fce6bff6982c64f418
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/bouffalo.ld
@@ -0,0 +1,245 @@
+/****************************************************************************************
+* @file bl702_flash.ld
+*
+* @brief This file is the map file (gnuarm or armgcc).
+*
+* Copyright (C) BouffaloLab 2021
+*
+****************************************************************************************
+*/
+
+/* configure the CPU type */
+OUTPUT_ARCH( "riscv" )
+/* link with the standard c library */
+/* INPUT(-lc) */
+/* link with the standard GCC library */
+/* INPUT(-lgcc) */
+/* configure the entry point */
+ENTRY(_enter)
+
+StackSize = 0x1000; /*  4KB */
+
+MEMORY
+{
+    xip_memory  (rx)  : ORIGIN = 0x23000000, LENGTH = 1024K
+    itcm_memory (rx)  : ORIGIN = 0x22014000, LENGTH = 16K
+    dtcm_memory (rx)  : ORIGIN = 0x42018000, LENGTH = 16K
+    ram_memory  (!rx) : ORIGIN = 0x4201C000, LENGTH = 80K
+    hbn_memory  (rx)  : ORIGIN = 0x40010000, LENGTH = 0xE00     /* hbn ram 4K used 3.5K*/
+}
+
+SECTIONS
+{
+    PROVIDE(__metal_chicken_bit = 0);
+
+    .text :
+    {
+        . = ALIGN(4);
+        __text_code_start__ = .;
+
+        KEEP (*(.text.metal.init.enter))
+        KEEP (*(SORT_NONE(.init)))
+        /* section information for shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+
+        /* section information for usb desc */
+        . = ALIGN(4);
+        _usb_desc_start = .;
+        KEEP(*(usb_desc))
+        _usb_desc_end = .;
+
+        /* section information for initial. */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+
+        . = ALIGN(4);
+        *(.text)
+        *(.text.*)
+
+        /*put .rodata**/
+        *(EXCLUDE_FILE( *bl702_glb*.o* \
+                        *bl702_pds*.o* \
+                        *bl702_common*.o* \
+                        *bl702_sf_cfg*.o* \
+                        *bl702_sf_cfg_ext*.o* \
+                        *bl702_sf_ctrl*.o* \
+                        *bl702_sflash*.o* \
+                        *bl702_sflash_ext*.o* \
+                        *bl702_xip_sflash*.o* \
+                        *bl702_xip_sflash_ext*.o* \
+                        *bl702_ef_ctrl*.o*) .rodata*)
+
+        *(.rodata)
+        *(.rodata.*)
+
+        *(.srodata)
+        *(.srodata.*)
+
+        . = ALIGN(4);
+        __text_code_end__ = .;
+    } > xip_memory
+
+    . = ALIGN(4);
+    __itcm_load_addr = .;
+
+    .itcm_region : AT (__itcm_load_addr)
+    {
+        . = ALIGN(4);
+        __tcm_code_start__ = .;
+
+        *(.tcm_code.*)
+        *(.tcm_const.*)
+        *(.sclock_rlt_code.*)
+        *(.sclock_rlt_const.*)
+
+        *bl702_glb*.o*(.rodata*)
+        *bl702_pds*.o*(.rodata*)
+        *bl702_common*.o*(.rodata*)
+        *bl702_sf_cfg*.o*(.rodata*)
+        *bl702_sf_cfg_ext*.o*(.rodata*)
+        *bl702_sf_ctrl*.o*(.rodata*)
+        *bl702_sflash*.o*(.rodata*)
+        *bl702_sflash_ext*.o*(.rodata*)
+        *bl702_xip_sflash*.o*(.rodata*)
+        *bl702_xip_sflash_ext*.o*(.rodata*)
+        *bl702_ef_ctrl*.o*(.rodata*)
+
+        . = ALIGN(4);
+        __tcm_code_end__ = .;
+    } > itcm_memory
+
+    __hbn_load_addr = __itcm_load_addr + SIZEOF(.itcm_region);
+
+    .hbn_ram_region : AT (__hbn_load_addr)
+    {
+        . = ALIGN(4);
+        __hbn_ram_start__ = .;
+        *(EXCLUDE_FILE(*bl702_hbn_wakeup.o).rodata*)
+        *bl702_hbn_wakeup.o*(.rodata*)
+        *(.hbn_ram_code)
+        *(.hbn_ram_data)
+        . = ALIGN(4);
+        __hbn_ram_end__ = .;
+    } > hbn_memory
+
+    __dtcm_load_addr = __hbn_load_addr + SIZEOF(.hbn_ram_region);
+
+    .dtcm_region : AT (__dtcm_load_addr)
+    {
+        . = ALIGN(4);
+        __tcm_data_start__ = .;
+
+        *(.tcm_data)
+        /* *finger_print.o(.data*) */
+
+        . = ALIGN(4);
+        __tcm_data_end__ = .;
+    } > dtcm_memory
+
+    /*************************************************************************/
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (NOLOAD):
+    {
+        . = ALIGN(0x4);
+        . = . + StackSize;
+        . = ALIGN(0x4);
+    } > dtcm_memory
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(dtcm_memory) + LENGTH(dtcm_memory);
+    PROVIDE( __freertos_irq_stack_top = __StackTop);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__StackLimit >= __tcm_data_end__, "region RAM overflowed with stack")
+    /*************************************************************************/
+
+    __system_ram_load_addr = __dtcm_load_addr + SIZEOF(.dtcm_region);
+
+    .system_ram_data_region : AT (__system_ram_load_addr)
+    {
+        . = ALIGN(4);
+        __system_ram_data_start__ = .;
+
+        *(.system_ram)
+
+        . = ALIGN(4);
+        __system_ram_data_end__ = .;
+    } > ram_memory
+
+    __ram_load_addr = __system_ram_load_addr + SIZEOF(.system_ram_data_region);
+
+    /* Data section */
+    RAM_DATA : AT (__ram_load_addr)
+    {
+        . = ALIGN(4);
+        __ram_data_start__ = .;
+
+        PROVIDE( __global_pointer$ = . + 0x800 );
+
+        *(.data)
+        *(.data.*)
+        *(.sdata)
+        *(.sdata.*)
+        *(.sdata2)
+        *(.sdata2.*)
+
+        . = ALIGN(4);
+        __ram_data_end__ = .;
+    } > ram_memory
+
+    .bss (NOLOAD) :
+    {
+        . = ALIGN(4);
+        __bss_start__ = .;
+
+        *(.bss*)
+        *(.sbss*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        __bss_end__ = .;
+    } > ram_memory
+
+    .noinit_data (NOLOAD) :
+    {
+        . = ALIGN(4);
+        __noinit_data_start__ = .;
+
+        *(.noinit_data*)
+
+        . = ALIGN(4);
+        __noinit_data_end__ = .;
+    } > ram_memory
+
+    .heap (NOLOAD):
+    {
+        . = ALIGN(4);
+        __HeapBase = .;
+
+        KEEP(*(.heap*))
+
+        . = ALIGN(4);
+        __HeapLimit = .;
+    } > ram_memory
+
+    PROVIDE (__heap_min_size = 0x400);
+    __HeapLimit = ORIGIN(ram_memory) + LENGTH(ram_memory);
+
+    ASSERT((__HeapLimit -  __HeapBase ) >= __heap_min_size, "heap size is too short.")
+
+}
+
diff --git a/bsp/bouffalolab/bl702/board/drv_uart_no_device.c b/bsp/bouffalolab/bl702/board/drv_uart_no_device.c
new file mode 100644
index 0000000000000000000000000000000000000000..ecfe03f73cbe6a842db469a94ffa462432e0c943
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/drv_uart_no_device.c
@@ -0,0 +1,61 @@
+#include <rtthread.h>
+#include <rthw.h>
+#include "drv_uart_no_device.h"
+
+#ifdef BSP_USING_DEBUG_UART
+#include "bl702_uart.h"
+#include "bl702_glb.h"
+
+#define UART0_ID 0
+
+void rt_hw_console_output(const char *str)
+{
+    rt_size_t i = 0, size = 0;
+    char a = '\r';
+
+    size = rt_strlen(str);
+    for (i = 0; i < size; i++)
+    {
+        if (*(str + i) == '\n')
+        {
+            UART_SendData(UART0_ID, (uint8_t *)&a, 1);
+        }
+        UART_SendData(UART0_ID, (uint8_t *)(str + i), 1);
+    }
+}
+
+int rt_hw_debug_uart_init(void)
+{
+    rt_err_t result = RT_EOK;
+
+    UART_FifoCfg_Type fifoCfg = { 0 };
+    UART_CFG_Type uart_cfg = { 0 };
+
+    /* disable all interrupt */
+    UART_IntMask(UART0_ID, UART_INT_ALL, MASK);
+    /* disable uart before config */
+    UART_Disable(UART0_ID, UART_TXRX);
+
+    uart_cfg.baudRate = 115200;
+    uart_cfg.dataBits = 3;      /*!< Data length is 8 bits */
+    uart_cfg.stopBits = 1;      /*!< 1 stop bit */
+    uart_cfg.parity = 0;        /*!< UART parity none define */
+    uart_cfg.uartClk = 96000000;
+
+    GLB_Set_UART_CLK(ENABLE, HBN_UART_CLK_96M, 0);
+    /* uart init with default configuration */
+    UART_Init(UART0_ID, &uart_cfg);
+
+    /* Enable tx free run mode */
+    UART_TxFreeRun(UART0_ID, ENABLE);
+
+    /* Set rx time-out value */
+    UART_SetRxTimeoutValue(UART0_ID, UART_DEFAULT_RTO_TIMEOUT);
+
+    /* enable uart */
+    UART_Enable(UART0_ID, UART_TXRX);
+
+    return result;
+}
+
+#endif /* BSP_USING_DEBUG_UART */
diff --git a/bsp/bouffalolab/bl702/board/drv_uart_no_device.h b/bsp/bouffalolab/bl702/board/drv_uart_no_device.h
new file mode 100644
index 0000000000000000000000000000000000000000..6fe0d0e31a4394d572b8546ac504e06fc6687b9d
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/drv_uart_no_device.h
@@ -0,0 +1,6 @@
+#ifndef __DRV_DEBUG_UART_H__
+#define __DRV_DEBUG_UART_H__
+
+int rt_hw_debug_uart_init(void);
+
+#endif  /* __DRV_DEBUG_UART_H__ */
diff --git a/bsp/bouffalolab/bl702/board/startup_gcc.S b/bsp/bouffalolab/bl702/board/startup_gcc.S
new file mode 100644
index 0000000000000000000000000000000000000000..5a4961cb7110d143535663c108b980465ae483bf
--- /dev/null
+++ b/bsp/bouffalolab/bl702/board/startup_gcc.S
@@ -0,0 +1,103 @@
+/* Copyright 2018 SiFive, Inc */
+/* SPDX-License-Identifier: Apache-2.0 */
+#include "riscv_encoding.h"
+
+/* This code executes before _start, which is contained inside the C library.
+ * In embedded systems we want to ensure that _enter, which contains the first
+ * code to be executed, can be loaded at a specific address.  To enable this
+ * feature we provide the '.text.metal.init.enter' section, which is
+ * defined to have the first address being where execution should start. */
+.section .text.metal.init.enter
+.global _enter
+_enter:
+    .cfi_startproc
+
+    /* Inform the debugger that there is nowhere to backtrace past _enter. */
+    .cfi_undefined ra
+
+    /* The absolute first thing that must happen is configuring the global
+     * pointer register, which must be done with relaxation disabled because
+     * it's not valid to obtain the address of any symbol without GP
+     * configured.  The C environment might go ahead and do this again, but
+     * that's safe as it's a fixed register. */
+.option push
+.option norelax
+    la gp, __global_pointer$
+.option pop
+
+    /* Disable global interrupt */
+    /*clear_csr(mstatus, MSTATUS_MIE);*/
+    csrci mstatus,8
+
+    /* If there is a clint then interrupts can branch directly to the
+    * trap handler.  Otherwise the interrupt controller will need to be configured
+    * outside of this file. */
+
+    la t0, trap_entry
+    ori t0, t0, 2
+    csrw mtvec, t0
+
+    /* enable chicken bit if core is bullet series*/
+    la t0, __metal_chicken_bit
+    beqz t0, 1f
+    csrwi 0x7C1, 0
+1:
+
+    /* There may be pre-initialization routines inside the MBI code that run in
+     * C, so here we set up a C environment.  First we set up a stack pointer,
+     * which is left as a weak reference in order to allow initialization
+     * routines that do not need a stack to be set up to transparently be
+     * called. */
+    .weak __StackTop
+    la sp, __StackTop
+#ifdef __riscv_float_abi_single
+    /* deal with FP */
+    /* Is F extension present? */
+    csrr t0, misa
+    andi t0, t0, (1 << ('F' - 'A'))
+    beqz t0, 1f
+    /* If so, enable it */
+    li t0, MSTATUS_FS
+    csrs mstatus, t0
+    fssr x0
+1:
+#endif
+
+    /* Check for an initialization routine and call it if one exists, otherwise
+     * just skip over the call entirely.   Note that __metal_initialize isn't
+     * actually a full C function, as it doesn't end up with the .bss or .data
+     * segments having been initialized.  This is done to avoid putting a
+     * burden on systems that can be initialized without having a C environment
+     * set up. */
+    call SystemInit
+
+    /* start load code to itcm like. */
+    call start_load
+
+    jal System_Post_Init
+    /* At this point we can enter the C runtime's startup file.  The arguments
+     * to this function are designed to match those provided to the SEE, just
+     * so we don't have to write another ABI. */
+    csrr a0, mhartid
+    li a1, 0
+    li a2, 0
+    call entry
+
+    csrci mstatus, (1 << 3)
+
+__exit:
+    j __exit
+
+    .cfi_endproc
+/* The GCC port might not emit a __register_frame_info symbol, which eventually
+ * results in a weak undefined reference that eventually causes crash when it
+ * is dereference early in boot.  We really shouldn't need to put this here,
+ * but to deal with what I think is probably a bug in the linker script I'm
+ * going to leave this in for now.  At least it's fairly cheap :) */
+.weak __register_frame_info
+.global __register_frame_info
+.section .text.metal.init.__register_frame_info
+__register_frame_info:
+    .cfi_startproc
+    ret
+    .cfi_endproc
diff --git a/bsp/bouffalolab/bl702/link_stacksize.lds b/bsp/bouffalolab/bl702/link_stacksize.lds
new file mode 100644
index 0000000000000000000000000000000000000000..1dd893422c2e9b079747bd857dec99880b056715
--- /dev/null
+++ b/bsp/bouffalolab/bl702/link_stacksize.lds
@@ -0,0 +1 @@
+__STACKSIZE__ = 4096;
\ No newline at end of file
diff --git a/bsp/bouffalolab/bl702/rtconfig.h b/bsp/bouffalolab/bl702/rtconfig.h
new file mode 100644
index 0000000000000000000000000000000000000000..4e1abc0f28cbfcc4c77852d84942f74994c98448
--- /dev/null
+++ b/bsp/bouffalolab/bl702/rtconfig.h
@@ -0,0 +1,143 @@
+#ifndef RT_CONFIG_H__
+#define RT_CONFIG_H__
+
+/* Automatically generated file; DO NOT EDIT. */
+/* RT-Thread Project Configuration */
+
+/* RT-Thread Kernel */
+
+#define RT_NAME_MAX 8
+#define RT_ALIGN_SIZE 8
+#define RT_THREAD_PRIORITY_32
+#define RT_THREAD_PRIORITY_MAX 32
+#define RT_TICK_PER_SECOND 1000
+#define IDLE_THREAD_STACK_SIZE 4096
+
+/* kservice optimization */
+
+
+/* Inter-Thread communication */
+
+#define RT_USING_SEMAPHORE
+#define RT_USING_MUTEX
+#define RT_USING_EVENT
+#define RT_USING_MAILBOX
+#define RT_USING_MESSAGEQUEUE
+
+/* Memory Management */
+
+#define RT_USING_NOHEAP
+
+/* Kernel Device Object */
+
+#define RT_USING_DEVICE
+#define RT_USING_CONSOLE
+#define RT_CONSOLEBUF_SIZE 128
+#define RT_CONSOLE_DEVICE_NAME "uarths"
+#define RT_VER_NUM 0x40004
+#define ARCH_RISCV_FPU
+#define ARCH_RISCV_FPU_S
+
+/* RT-Thread Components */
+
+#define RT_USING_COMPONENTS_INIT
+#define RT_USING_USER_MAIN
+#define RT_MAIN_THREAD_STACK_SIZE 8192
+#define RT_MAIN_THREAD_PRIORITY 10
+
+/* C++ features */
+
+
+/* Command shell */
+
+
+/* Device virtual file system */
+
+
+/* Device Drivers */
+
+
+/* Using USB */
+
+
+/* POSIX layer and C standard library */
+
+
+/* Network */
+
+/* Socket abstraction layer */
+
+
+/* Network interface device */
+
+
+/* light weight TCP/IP stack */
+
+
+/* AT commands */
+
+
+/* VBUS(Virtual Software BUS) */
+
+
+/* Utilities */
+
+
+/* RT-Thread Utestcases */
+
+
+/* RT-Thread online packages */
+
+/* IoT - internet of things */
+
+
+/* Wi-Fi */
+
+/* Marvell WiFi */
+
+
+/* Wiced WiFi */
+
+
+/* IoT Cloud */
+
+
+/* security packages */
+
+
+/* language packages */
+
+
+/* multimedia packages */
+
+
+/* tools packages */
+
+
+/* system packages */
+
+/* acceleration: Assembly language or algorithmic acceleration packages */
+
+
+/* Micrium: Micrium software products porting for RT-Thread */
+
+
+/* peripheral libraries and drivers */
+
+
+/* AI packages */
+
+
+/* miscellaneous packages */
+
+/* samples: kernel and components samples */
+
+
+/* entertainment: terminal games and other interesting software packages */
+
+#define PKG_USING_BL_MCU_SDK
+#define PKG_USING_BL_MCU_SDK_LATEST_VERSION
+#define BSP_USING_DEBUG_UART
+#define BOARD_BL702
+
+#endif
diff --git a/bsp/bouffalolab/bl702/rtconfig.py b/bsp/bouffalolab/bl702/rtconfig.py
new file mode 100644
index 0000000000000000000000000000000000000000..6415cac0c22e282f46e7016d9eb804b74ffaf461
--- /dev/null
+++ b/bsp/bouffalolab/bl702/rtconfig.py
@@ -0,0 +1,54 @@
+import os
+
+# toolchains options
+ARCH        ='risc-v'
+CPU         ='e24'
+CROSS_TOOL  ='gcc'
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = r'../..'
+
+if os.getenv('RTT_CC'):
+    CROSS_TOOL = os.getenv('RTT_CC')
+
+if  CROSS_TOOL == 'gcc':
+    PLATFORM    = 'gcc'
+    EXEC_PATH   = 'D:/EmbeddedSoftware/toolchain_gcc_sifive_windows/bin'
+else:
+    print('Please make sure your toolchains is GNU GCC!')
+    exit(0)
+
+BUILD = 'debug'
+
+if PLATFORM == 'gcc':
+    # toolchains
+    PREFIX  = 'riscv64-unknown-elf-'
+    CC      = PREFIX + 'gcc'
+    CXX     = PREFIX + 'g++'
+    AS      = PREFIX + 'gcc'
+    AR      = PREFIX + 'ar'
+    LINK    = PREFIX + 'gcc'
+    TARGET_EXT = 'elf'
+    SIZE    = PREFIX + 'size'
+    OBJDUMP = PREFIX + 'objdump'
+    OBJCPY  = PREFIX + 'objcopy'
+
+    DEVICE  = ' -mcmodel=medany -march=rv32imafc -mabi=ilp32f -fsingle-precision-constant'
+    CFLAGS  = DEVICE + ' -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields'
+    AFLAGS  = ' -c' + DEVICE + ' -x assembler-with-cpp'
+    LFLAGS  = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T board/bouffalo.ld'
+    CPATH   = ''
+    LPATH   = ''
+
+    if BUILD == 'debug':
+        CFLAGS += ' -O0 -ggdb'
+        AFLAGS += ' -ggdb'
+    else:
+        CFLAGS += ' -O2 -Os'
+
+    CXXFLAGS = CFLAGS
+
+DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtt.asm\n'
+POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
diff --git a/libcpu/risc-v/e24/SConscript b/libcpu/risc-v/e24/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..20f325b692aedf3f74fbe124c90cc241cd460c32
--- /dev/null
+++ b/libcpu/risc-v/e24/SConscript
@@ -0,0 +1,14 @@
+# RT-Thread building script for component
+
+from building import *
+
+Import('rtconfig')
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c') + Glob('*.cpp') + Glob('*_gcc.S')
+CPPPATH = [cwd]
+ASFLAGS = ''
+
+group = DefineGroup('CPU', src, depend = [''], CPPPATH = CPPPATH, ASFLAGS = ASFLAGS)
+
+Return('group')
diff --git a/libcpu/risc-v/e24/interrupt_gcc.S b/libcpu/risc-v/e24/interrupt_gcc.S
new file mode 100644
index 0000000000000000000000000000000000000000..173c2eb9bf221e5ee9ba9de2711ba7e15059ef4c
--- /dev/null
+++ b/libcpu/risc-v/e24/interrupt_gcc.S
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-05-29     tanek        first implementation
+ */
+
+  .section .text.metal.init.trapvec
+  .align 6
+  .global trap_entry
+trap_entry:
+
+    // save all from thread context
+    addi sp, sp, -32 * 4
+
+    sw x1,   1 * 4(sp)
+    li t0, 0x80
+    sw t0,   2 * 4(sp)
+
+    sw x4,   4 * 4(sp)
+    sw x5,   5 * 4(sp)
+    sw x6,   6 * 4(sp)
+    sw x7,   7 * 4(sp)
+    sw x8,   8 * 4(sp)
+    sw x9,   9 * 4(sp)
+    sw x10, 10 * 4(sp)
+    sw x11, 11 * 4(sp)
+    sw x12, 12 * 4(sp)
+    sw x13, 13 * 4(sp)
+    sw x14, 14 * 4(sp)
+    sw x15, 15 * 4(sp)
+    sw x16, 16 * 4(sp)
+    sw x17, 17 * 4(sp)
+    sw x18, 18 * 4(sp)
+    sw x19, 19 * 4(sp)
+    sw x20, 20 * 4(sp)
+    sw x21, 21 * 4(sp)
+    sw x22, 22 * 4(sp)
+    sw x23, 23 * 4(sp)
+    sw x24, 24 * 4(sp)
+    sw x25, 25 * 4(sp)
+    sw x26, 26 * 4(sp)
+    sw x27, 27 * 4(sp)
+    sw x28, 28 * 4(sp)
+    sw x29, 29 * 4(sp)
+    sw x30, 30 * 4(sp)
+    sw x31, 31 * 4(sp)
+
+    // switch to interrupt stack
+    move s0, sp
+    la   sp, __StackTop
+
+    // interrupt handle
+    call rt_interrupt_enter
+    csrr a0, mcause
+    csrr a1, mepc
+    mv a2, sp
+    call handle_trap
+    call rt_interrupt_leave
+
+    // switch to from thread stack
+    move sp, s0
+
+    // need to switch new thread
+    la   s0, rt_thread_switch_interrupt_flag
+    lw   s2, 0(s0)
+    beqz s2, spurious_interrupt
+    sw   zero, 0(s0)
+
+    csrr a0, mepc
+    sw a0,  0 * 4(sp)
+
+    la   s0, rt_interrupt_from_thread
+    lw   s1, 0(s0)
+    sw   sp, 0(s1)
+
+    la   s0, rt_interrupt_to_thread
+    lw   s1, 0(s0)
+    lw   sp, 0(s1)
+
+    lw  a0,  0 * 4(sp)
+    csrw mepc, a0
+
+spurious_interrupt:
+    lw x1,   1 * 4(sp)
+
+    // Remain in M-mode after mret
+    li t0, 0x00001800
+    csrs mstatus, t0
+    lw t0,   2 * 4(sp)
+    csrs mstatus, t0
+
+    lw x4,   4 * 4(sp)
+    lw x5,   5 * 4(sp)
+    lw x6,   6 * 4(sp)
+    lw x7,   7 * 4(sp)
+    lw x8,   8 * 4(sp)
+    lw x9,   9 * 4(sp)
+    lw x10, 10 * 4(sp)
+    lw x11, 11 * 4(sp)
+    lw x12, 12 * 4(sp)
+    lw x13, 13 * 4(sp)
+    lw x14, 14 * 4(sp)
+    lw x15, 15 * 4(sp)
+    lw x16, 16 * 4(sp)
+    lw x17, 17 * 4(sp)
+    lw x18, 18 * 4(sp)
+    lw x19, 19 * 4(sp)
+    lw x20, 20 * 4(sp)
+    lw x21, 21 * 4(sp)
+    lw x22, 22 * 4(sp)
+    lw x23, 23 * 4(sp)
+    lw x24, 24 * 4(sp)
+    lw x25, 25 * 4(sp)
+    lw x26, 26 * 4(sp)
+    lw x27, 27 * 4(sp)
+    lw x28, 28 * 4(sp)
+    lw x29, 29 * 4(sp)
+    lw x30, 30 * 4(sp)
+    lw x31, 31 * 4(sp)
+
+    addi sp, sp, 32 * 4
+    mret