diff --git a/board/csky/gx6605s/gdbinit b/board/csky/gx6605s/gdbinit
new file mode 100644
index 0000000..0a6d8ab
--- /dev/null
+++ b/board/csky/gx6605s/gdbinit
@@ -0,0 +1,25 @@
+tar jtag jtag://127.0.0.1:1025
+reset
+
+# setup CCR (Cache Config Reg)
+# 0-1:MP,2:IE,3:DE,4:WB,5:RS,6:Z,7:BE 
+set $cr18 = 0x7d
+
+# vendor custom setup, double cache line & preload
+set $cr30 = 0xc
+
+# pin mux for serial8250
+set *(unsigned int *) 0xa030a14c |= (1 << 22) | (1 << 23)
+
+# pass devicetree blob
+# r2 is magic
+# r3 is address
+set $r2 = 0x20150401
+set $r3 = 0x92000000
+restore gx6605s.dtb binary 0x92000000
+
+# flush cache
+set $cr17 = 0x33
+
+load
+
diff --git a/board/csky/gx6605s/gx6605s.dts b/board/csky/gx6605s/gx6605s.dts
new file mode 100644
index 0000000..195b0df
--- /dev/null
+++ b/board/csky/gx6605s/gx6605s.dts
@@ -0,0 +1,56 @@
+/dts-v1/;
+/ {
+	model = "Nationalchip csky gx6605s";
+	compatible = "csky,nationalchip-gx6605s";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	memory {
+		device_type = "memory";
+		reg = <0x10000000 0x04000000>;
+	};
+
+	soc {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "simple-bus";
+		ranges;
+
+		intc: interrupt-controller {
+			compatible = "nationalchip,intc-v1,ave";
+			reg = <0x00500000 0x400>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		timer0 {
+			compatible = "nationalchip,timer-v1";
+			reg = <0x0020a000 0x400>;
+			clock-frequency = <1000000>;
+			interrupts = <10>;
+			interrupt-parent = <&intc>;
+		};
+
+		ehci: ehci-hcd {
+			compatible = "generic-ehci";
+			reg = <0x00900000 0x400>;
+			interrupt-parent = <&intc>;
+			interrupts = <59>;
+		};
+
+		uart0: serial@403000 {
+			compatible = "ns16550a";
+			reg = <0x00403000 0x400>;
+			interrupt-parent = <&intc>;
+			interrupts = <15>;
+			clock-frequency = <29491200>;
+			baud = <115200>;
+			reg-shift = <2>;
+			reg-io-width = <1>;
+		};
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200 init=/sbin/init root=/dev/nfs rw nfsroot=192.168.101.230:/opt/nfs/test,v3,tcp,nolock ip=192.168.101.25";
+	};
+};
diff --git a/board/csky/gx6605s/gx6622.dts b/board/csky/gx6605s/gx6622.dts
new file mode 100644
index 0000000..6f2aae3
--- /dev/null
+++ b/board/csky/gx6605s/gx6622.dts
@@ -0,0 +1,56 @@
+/dts-v1/;
+/ {
+	model = "Nationalchip csky gx6605s";
+	compatible = "csky,nationalchip-gx6605s";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	memory {
+		device_type = "memory";
+		reg = <0x10000000 0x08000000>;
+	};
+
+	soc {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "simple-bus";
+		ranges;
+
+		intc: interrupt-controller {
+			compatible = "nationalchip,intc-v1,ave";
+			reg = <0x00500000 0x400>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		timer0 {
+			compatible = "nationalchip,timer-v1";
+			reg = <0x0020a000 0x400>;
+			clock-frequency = <1000000>;
+			interrupts = <10>;
+			interrupt-parent = <&intc>;
+		};
+
+		ehci: ehci-hcd {
+			compatible = "generic-ehci";
+			reg = <0x00900000 0x400>;
+			interrupt-parent = <&intc>;
+			interrupts = <59>;
+		};
+
+		uart0: serial@403000 {
+			compatible = "ns16550a";
+			reg = <0x00403000 0x400>;
+			interrupt-parent = <&intc>;
+			interrupts = <15>;
+			clock-frequency = <29491200>;
+			baud = <115200>;
+			reg-shift = <2>;
+			reg-io-width = <1>;
+		};
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200 init=/sbin/init root=/dev/nfs rw nfsroot=192.168.101.230:/opt/nfs/test,v3,tcp,nolock ip=192.168.101.23";
+	};
+};
diff --git a/board/csky/gx6605s/gx66xx_defconfig b/board/csky/gx6605s/gx66xx_defconfig
new file mode 100644
index 0000000..94eac2c
--- /dev/null
+++ b/board/csky/gx6605s/gx66xx_defconfig
@@ -0,0 +1,525 @@
+CONFIG_CROSS_COMPILE="csky-linux-"
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_DEFAULT_HOSTNAME="github.com/c-sky"
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_FHANDLE is not set
+CONFIG_USELIB=y
+CONFIG_AUDIT=y
+CONFIG_IRQ_DOMAIN_DEBUG=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_RELAY=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_AIO is not set
+CONFIG_USERFAULTFD=y
+CONFIG_EMBEDDED=y
+# CONFIG_PERF_EVENTS is not set
+# CONFIG_SLUB_DEBUG is not set
+# CONFIG_COMPAT_BRK is not set
+CONFIG_PROFILING=y
+CONFIG_OPROFILE=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_INTEGRITY=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_ACORN_PARTITION=y
+CONFIG_ACORN_PARTITION_ICS=y
+CONFIG_ACORN_PARTITION_RISCIX=y
+CONFIG_AIX_PARTITION=y
+CONFIG_OSF_PARTITION=y
+CONFIG_AMIGA_PARTITION=y
+CONFIG_ATARI_PARTITION=y
+CONFIG_MAC_PARTITION=y
+CONFIG_BSD_DISKLABEL=y
+CONFIG_MINIX_SUBPARTITION=y
+CONFIG_SOLARIS_X86_PARTITION=y
+CONFIG_UNIXWARE_DISKLABEL=y
+CONFIG_LDM_PARTITION=y
+CONFIG_SGI_PARTITION=y
+CONFIG_ULTRIX_PARTITION=y
+CONFIG_SUN_PARTITION=y
+CONFIG_KARMA_PARTITION=y
+CONFIG_SYSV68_PARTITION=y
+CONFIG_CMDLINE_PARTITION=y
+CONFIG_DEFAULT_DEADLINE=y
+CONFIG_NATIONALCHIP_TIMER=y
+CONFIG_NATIONALCHIP_IRQ=y
+CONFIG_CSKY_IRQ=y
+# CONFIG_MMU_HARD_REFILL is not set
+CONFIG_RAM_BASE=0x10000000
+# CONFIG_SUSPEND is not set
+# CONFIG_COMPACTION is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_IP_PNP_RARP=y
+# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_STANDALONE is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_SIZE=65536
+CONFIG_VIRTIO_BLK=y
+CONFIG_AD525X_DPOT=m
+CONFIG_AD525X_DPOT_I2C=m
+CONFIG_DUMMY_IRQ=m
+CONFIG_ICS932S401=m
+CONFIG_ENCLOSURE_SERVICES=m
+CONFIG_APDS9802ALS=m
+CONFIG_ISL29003=m
+CONFIG_ISL29020=m
+CONFIG_SENSORS_TSL2550=m
+CONFIG_SENSORS_BH1770=m
+CONFIG_SENSORS_APDS990X=m
+CONFIG_HMC6352=m
+CONFIG_DS1682=m
+CONFIG_USB_SWITCH_FSA9480=m
+CONFIG_SRAM=y
+CONFIG_C2PORT=m
+CONFIG_EEPROM_AT24=m
+CONFIG_EEPROM_LEGACY=m
+CONFIG_EEPROM_MAX6875=m
+CONFIG_EEPROM_93CX6=m
+CONFIG_SENSORS_LIS3_I2C=m
+CONFIG_ALTERA_STAPL=m
+CONFIG_ECHO=m
+CONFIG_SCSI=y
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+CONFIG_SCSI_SPI_ATTRS=y
+CONFIG_SCSI_SAS_LIBSAS=m
+CONFIG_SCSI_SRP_ATTRS=m
+# CONFIG_SCSI_LOWLEVEL is not set
+CONFIG_NETDEVICES=y
+CONFIG_USB_RTL8150=y
+CONFIG_USB_RTL8152=y
+CONFIG_USB_USBNET=y
+CONFIG_INPUT_SPARSEKMAP=m
+CONFIG_INPUT_JOYDEV=m
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_EVBUG=m
+CONFIG_KEYBOARD_ADP5588=m
+CONFIG_KEYBOARD_ADP5589=m
+CONFIG_KEYBOARD_QT1070=m
+CONFIG_KEYBOARD_QT2160=m
+CONFIG_KEYBOARD_LKKBD=m
+CONFIG_KEYBOARD_TCA6416=m
+CONFIG_KEYBOARD_TCA8418=m
+CONFIG_KEYBOARD_LM8323=m
+CONFIG_KEYBOARD_LM8333=m
+CONFIG_KEYBOARD_MAX7359=m
+CONFIG_KEYBOARD_MCS=m
+CONFIG_KEYBOARD_MPR121=m
+CONFIG_KEYBOARD_NEWTON=m
+CONFIG_KEYBOARD_OPENCORES=m
+CONFIG_KEYBOARD_STOWAWAY=m
+CONFIG_KEYBOARD_SUNKBD=m
+CONFIG_KEYBOARD_XTKBD=m
+CONFIG_MOUSE_PS2=m
+CONFIG_MOUSE_PS2_ELANTECH=y
+CONFIG_MOUSE_PS2_SENTELIC=y
+CONFIG_MOUSE_PS2_TOUCHKIT=y
+CONFIG_MOUSE_SERIAL=m
+CONFIG_MOUSE_CYAPA=m
+CONFIG_MOUSE_VSXXXAA=m
+CONFIG_MOUSE_SYNAPTICS_I2C=m
+CONFIG_INPUT_JOYSTICK=y
+CONFIG_JOYSTICK_ANALOG=m
+CONFIG_JOYSTICK_A3D=m
+CONFIG_JOYSTICK_ADI=m
+CONFIG_JOYSTICK_COBRA=m
+CONFIG_JOYSTICK_GF2K=m
+CONFIG_JOYSTICK_GRIP=m
+CONFIG_JOYSTICK_GRIP_MP=m
+CONFIG_JOYSTICK_GUILLEMOT=m
+CONFIG_JOYSTICK_INTERACT=m
+CONFIG_JOYSTICK_SIDEWINDER=m
+CONFIG_JOYSTICK_TMDC=m
+CONFIG_JOYSTICK_IFORCE=m
+CONFIG_JOYSTICK_IFORCE_232=y
+CONFIG_JOYSTICK_WARRIOR=m
+CONFIG_JOYSTICK_MAGELLAN=m
+CONFIG_JOYSTICK_SPACEORB=m
+CONFIG_JOYSTICK_SPACEBALL=m
+CONFIG_JOYSTICK_STINGER=m
+CONFIG_JOYSTICK_TWIDJOY=m
+CONFIG_JOYSTICK_ZHENHUA=m
+CONFIG_JOYSTICK_AS5011=m
+CONFIG_JOYSTICK_JOYDUMP=m
+CONFIG_INPUT_TABLET=y
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_TOUCHSCREEN_AD7879=m
+CONFIG_TOUCHSCREEN_AD7879_I2C=m
+CONFIG_TOUCHSCREEN_ATMEL_MXT=m
+CONFIG_TOUCHSCREEN_BU21013=m
+CONFIG_TOUCHSCREEN_CYTTSP_CORE=m
+CONFIG_TOUCHSCREEN_CYTTSP_I2C=m
+CONFIG_TOUCHSCREEN_CYTTSP4_CORE=m
+CONFIG_TOUCHSCREEN_CYTTSP4_I2C=m
+CONFIG_TOUCHSCREEN_DYNAPRO=m
+CONFIG_TOUCHSCREEN_HAMPSHIRE=m
+CONFIG_TOUCHSCREEN_EETI=m
+CONFIG_TOUCHSCREEN_FUJITSU=m
+CONFIG_TOUCHSCREEN_ILI210X=m
+CONFIG_TOUCHSCREEN_GUNZE=m
+CONFIG_TOUCHSCREEN_ELO=m
+CONFIG_TOUCHSCREEN_WACOM_W8001=m
+CONFIG_TOUCHSCREEN_WACOM_I2C=m
+CONFIG_TOUCHSCREEN_MAX11801=m
+CONFIG_TOUCHSCREEN_MCS5000=m
+CONFIG_TOUCHSCREEN_MMS114=m
+CONFIG_TOUCHSCREEN_MTOUCH=m
+CONFIG_TOUCHSCREEN_INEXIO=m
+CONFIG_TOUCHSCREEN_MK712=m
+CONFIG_TOUCHSCREEN_PENMOUNT=m
+CONFIG_TOUCHSCREEN_EDT_FT5X06=m
+CONFIG_TOUCHSCREEN_TOUCHRIGHT=m
+CONFIG_TOUCHSCREEN_TOUCHWIN=m
+CONFIG_TOUCHSCREEN_PIXCIR=m
+CONFIG_TOUCHSCREEN_TOUCHIT213=m
+CONFIG_TOUCHSCREEN_TSC_SERIO=m
+CONFIG_TOUCHSCREEN_TSC2007=m
+CONFIG_TOUCHSCREEN_ST1232=m
+CONFIG_TOUCHSCREEN_TPS6507X=m
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_AD714X=m
+CONFIG_INPUT_BMA150=m
+CONFIG_INPUT_MMA8450=m
+CONFIG_INPUT_MPU3050=m
+CONFIG_INPUT_KXTJ9=m
+CONFIG_INPUT_UINPUT=y
+CONFIG_INPUT_PCF8574=m
+CONFIG_INPUT_ADXL34X=m
+CONFIG_INPUT_CMA3000=m
+CONFIG_INPUT_CMA3000_I2C=m
+CONFIG_SERIO_SERPORT=m
+CONFIG_SERIO_RAW=m
+CONFIG_SERIO_ALTERA_PS2=m
+CONFIG_SERIO_PS2MULT=m
+CONFIG_SERIO_ARC_PS2=m
+CONFIG_GAMEPORT_NS558=m
+CONFIG_GAMEPORT_L4=m
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_SERIAL_NONSTANDARD=y
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_8250=y
+# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=2
+CONFIG_SERIAL_8250_RUNTIME_UARTS=2
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_TTY_PRINTK=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_IPMI_HANDLER=y
+CONFIG_IPMI_DEVICE_INTERFACE=m
+CONFIG_IPMI_SI=m
+CONFIG_IPMI_WATCHDOG=m
+CONFIG_IPMI_POWEROFF=m
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_TIMERIOMEM=m
+CONFIG_HW_RANDOM_VIRTIO=m
+CONFIG_HW_RANDOM_TPM=m
+CONFIG_TCG_TIS_I2C_ATMEL=m
+CONFIG_TCG_TIS_I2C_INFINEON=m
+CONFIG_TCG_TIS_I2C_NUVOTON=m
+CONFIG_TCG_ATMEL=m
+CONFIG_I2C_CHARDEV=m
+CONFIG_I2C_MUX_PCA9541=m
+CONFIG_I2C_DESIGNWARE_PLATFORM=m
+CONFIG_I2C_OCORES=m
+CONFIG_I2C_PCA_PLATFORM=m
+CONFIG_I2C_SIMTEC=m
+CONFIG_I2C_XILINX=m
+CONFIG_I2C_PARPORT_LIGHT=m
+CONFIG_I2C_TAOS_EVM=m
+CONFIG_I2C_STUB=m
+CONFIG_PPS=m
+CONFIG_PPS_CLIENT_LDISC=m
+CONFIG_PPS_CLIENT_GPIO=m
+CONFIG_POWER_RESET=y
+# CONFIG_HWMON is not set
+CONFIG_SSB=m
+CONFIG_BCMA=m
+CONFIG_BCMA_HOST_SOC=y
+CONFIG_BCMA_DRIVER_GMAC_CMN=y
+CONFIG_MEDIA_SUPPORT=y
+CONFIG_MEDIA_CAMERA_SUPPORT=y
+CONFIG_MEDIA_USB_SUPPORT=y
+CONFIG_USB_VIDEO_CLASS=y
+# CONFIG_USB_GSPCA is not set
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_LCD_PLATFORM=m
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_GENERIC=m
+CONFIG_BACKLIGHT_ADP8860=m
+CONFIG_BACKLIGHT_ADP8870=m
+CONFIG_BACKLIGHT_LM3639=m
+CONFIG_BACKLIGHT_LV5207LP=m
+CONFIG_BACKLIGHT_BD6107=m
+# CONFIG_VGA_CONSOLE is not set
+# CONFIG_HID_GENERIC is not set
+CONFIG_HID_A4TECH=m
+CONFIG_HID_ACRUX=m
+CONFIG_HID_ACRUX_FF=y
+CONFIG_HID_APPLE=m
+CONFIG_HID_AUREAL=m
+CONFIG_HID_BELKIN=m
+CONFIG_HID_CHERRY=m
+CONFIG_HID_CHICONY=m
+CONFIG_HID_CYPRESS=m
+CONFIG_HID_DRAGONRISE=m
+CONFIG_DRAGONRISE_FF=y
+CONFIG_HID_EMS_FF=m
+CONFIG_HID_ELECOM=m
+CONFIG_HID_EZKEY=m
+CONFIG_HID_KEYTOUCH=m
+CONFIG_HID_KYE=m
+CONFIG_HID_WALTOP=m
+CONFIG_HID_GYRATION=m
+CONFIG_HID_ICADE=m
+CONFIG_HID_TWINHAN=m
+CONFIG_HID_KENSINGTON=m
+CONFIG_HID_LCPOWER=m
+CONFIG_HID_LOGITECH=m
+CONFIG_HID_LOGITECH_HIDPP=m
+CONFIG_LOGITECH_FF=y
+CONFIG_LOGIRUMBLEPAD2_FF=y
+CONFIG_LOGIG940_FF=y
+CONFIG_HID_MAGICMOUSE=m
+CONFIG_HID_MICROSOFT=m
+CONFIG_HID_MONTEREY=m
+CONFIG_HID_MULTITOUCH=m
+CONFIG_HID_ORTEK=m
+CONFIG_HID_PANTHERLORD=m
+CONFIG_PANTHERLORD_FF=y
+CONFIG_HID_PETALYNX=m
+CONFIG_HID_PICOLCD=m
+CONFIG_HID_PICOLCD_BACKLIGHT=y
+CONFIG_HID_PICOLCD_LCD=y
+CONFIG_HID_PICOLCD_LEDS=y
+CONFIG_HID_PRIMAX=m
+CONFIG_HID_SAITEK=m
+CONFIG_HID_SAMSUNG=m
+CONFIG_HID_SPEEDLINK=m
+CONFIG_HID_STEELSERIES=m
+CONFIG_HID_SUNPLUS=m
+CONFIG_HID_RMI=m
+CONFIG_HID_GREENASIA=m
+CONFIG_GREENASIA_FF=y
+CONFIG_HID_SMARTJOYPLUS=m
+CONFIG_SMARTJOYPLUS_FF=y
+CONFIG_HID_TIVO=m
+CONFIG_HID_TOPSEED=m
+CONFIG_HID_THINGM=m
+CONFIG_HID_THRUSTMASTER=m
+CONFIG_THRUSTMASTER_FF=y
+CONFIG_HID_WACOM=m
+CONFIG_HID_WIIMOTE=m
+CONFIG_HID_XINMO=m
+CONFIG_HID_ZEROPLUS=m
+CONFIG_ZEROPLUS_FF=y
+CONFIG_HID_ZYDACRON=m
+CONFIG_HID_SENSOR_HUB=m
+CONFIG_I2C_HID=m
+CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_HCD_PLATFORM=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_STORAGE=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_LM3530=m
+CONFIG_LEDS_LM3642=m
+CONFIG_LEDS_PCA9532=m
+CONFIG_LEDS_LP3944=m
+CONFIG_LEDS_LP5521=m
+CONFIG_LEDS_LP5523=m
+CONFIG_LEDS_LP5562=m
+CONFIG_LEDS_LP8501=m
+CONFIG_LEDS_PCA955X=m
+CONFIG_LEDS_PCA963X=m
+CONFIG_LEDS_BD2802=m
+CONFIG_LEDS_TCA6507=m
+CONFIG_LEDS_LM355x=m
+CONFIG_LEDS_BLINKM=m
+CONFIG_LEDS_TRIGGER_TIMER=m
+CONFIG_LEDS_TRIGGER_ONESHOT=m
+CONFIG_LEDS_TRIGGER_HEARTBEAT=m
+CONFIG_LEDS_TRIGGER_BACKLIGHT=m
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
+CONFIG_LEDS_TRIGGER_TRANSIENT=m
+CONFIG_LEDS_TRIGGER_CAMERA=m
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_STE_MODEM_RPROC=m
+CONFIG_PM_DEVFREQ=y
+CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
+CONFIG_DEVFREQ_GOV_PERFORMANCE=y
+CONFIG_DEVFREQ_GOV_POWERSAVE=y
+CONFIG_DEVFREQ_GOV_USERSPACE=y
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+CONFIG_EXT2_FS_SECURITY=y
+CONFIG_EXT3_FS=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_EXT3_FS_SECURITY=y
+CONFIG_FANOTIFY=y
+CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
+CONFIG_QUOTA=y
+# CONFIG_PRINT_QUOTA_WARNING is not set
+CONFIG_FSCACHE=m
+CONFIG_FSCACHE_STATS=y
+CONFIG_CACHEFILES=m
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_UTF8=y
+CONFIG_NTFS_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_CHILDREN=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_CONFIGFS_FS=y
+CONFIG_CRAMFS=y
+CONFIG_ROMFS_FS=y
+CONFIG_NFS_FS=y
+CONFIG_ROOT_NFS=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_CODEPAGE_737=y
+CONFIG_NLS_CODEPAGE_775=y
+CONFIG_NLS_CODEPAGE_850=y
+CONFIG_NLS_CODEPAGE_852=y
+CONFIG_NLS_CODEPAGE_855=y
+CONFIG_NLS_CODEPAGE_857=y
+CONFIG_NLS_CODEPAGE_860=y
+CONFIG_NLS_CODEPAGE_861=y
+CONFIG_NLS_CODEPAGE_863=y
+CONFIG_NLS_CODEPAGE_864=y
+CONFIG_NLS_CODEPAGE_865=y
+CONFIG_NLS_CODEPAGE_866=y
+CONFIG_NLS_CODEPAGE_869=y
+CONFIG_NLS_CODEPAGE_936=y
+CONFIG_NLS_CODEPAGE_950=y
+CONFIG_NLS_CODEPAGE_932=y
+CONFIG_NLS_CODEPAGE_949=m
+CONFIG_NLS_CODEPAGE_874=m
+CONFIG_NLS_ISO8859_8=m
+CONFIG_NLS_CODEPAGE_1250=y
+CONFIG_NLS_CODEPAGE_1251=y
+CONFIG_NLS_ASCII=m
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_ISO8859_2=m
+CONFIG_NLS_ISO8859_3=m
+CONFIG_NLS_ISO8859_4=m
+CONFIG_NLS_ISO8859_5=m
+CONFIG_NLS_ISO8859_6=m
+CONFIG_NLS_ISO8859_7=m
+CONFIG_NLS_ISO8859_9=m
+CONFIG_NLS_ISO8859_13=m
+CONFIG_NLS_ISO8859_14=m
+CONFIG_NLS_ISO8859_15=m
+CONFIG_NLS_KOI8_R=m
+CONFIG_NLS_KOI8_U=m
+CONFIG_NLS_MAC_ROMAN=m
+CONFIG_NLS_MAC_CELTIC=m
+CONFIG_NLS_MAC_CENTEURO=m
+CONFIG_NLS_MAC_CROATIAN=m
+CONFIG_NLS_MAC_CYRILLIC=m
+CONFIG_NLS_MAC_GAELIC=m
+CONFIG_NLS_MAC_GREEK=m
+CONFIG_NLS_MAC_ICELAND=m
+CONFIG_NLS_MAC_INUIT=m
+CONFIG_NLS_MAC_ROMANIAN=m
+CONFIG_NLS_MAC_TURKISH=m
+CONFIG_NLS_UTF8=y
+CONFIG_PRINTK_TIME=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+# CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_UNUSED_SYMBOLS=y
+CONFIG_DEBUG_FS=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_LOCKUP_DETECTOR=y
+# CONFIG_SCHED_DEBUG is not set
+CONFIG_RBTREE_TEST=m
+CONFIG_INTERVAL_TREE_TEST=m
+CONFIG_PERCPU_TEST=m
+CONFIG_TEST_STRING_HELPERS=m
+CONFIG_TEST_KSTRTOX=m
+CONFIG_PERSISTENT_KEYRINGS=y
+CONFIG_TRUSTED_KEYS=y
+CONFIG_SECURITY=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_SECURITY_PATH=y
+CONFIG_SECURITY_YAMA=y
+CONFIG_INTEGRITY_SIGNATURE=y
+CONFIG_INTEGRITY_ASYMMETRIC_KEYS=y
+CONFIG_IMA=y
+CONFIG_IMA_APPRAISE=y
+CONFIG_EVM=y
+CONFIG_CRYPTO_CRYPTD=m
+CONFIG_CRYPTO_AUTHENC=m
+CONFIG_CRYPTO_TEST=m
+CONFIG_CRYPTO_CCM=m
+CONFIG_CRYPTO_GCM=m
+CONFIG_CRYPTO_CTS=m
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_LRW=m
+CONFIG_CRYPTO_PCBC=m
+CONFIG_CRYPTO_XTS=m
+CONFIG_CRYPTO_CMAC=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_VMAC=m
+CONFIG_CRYPTO_CRC32=m
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_RMD128=m
+CONFIG_CRYPTO_RMD160=m
+CONFIG_CRYPTO_RMD256=m
+CONFIG_CRYPTO_RMD320=m
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_ANUBIS=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_BLOWFISH=m
+CONFIG_CRYPTO_CAMELLIA=m
+CONFIG_CRYPTO_CAST5=m
+CONFIG_CRYPTO_CAST6=m
+CONFIG_CRYPTO_DES=m
+CONFIG_CRYPTO_FCRYPT=m
+CONFIG_CRYPTO_KHAZAD=m
+CONFIG_CRYPTO_SALSA20=m
+CONFIG_CRYPTO_SEED=m
+CONFIG_CRYPTO_SERPENT=m
+CONFIG_CRYPTO_TEA=m
+CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_DEFLATE=m
+CONFIG_CRYPTO_LZO=y
+CONFIG_CRYPTO_LZ4=m
+CONFIG_CRYPTO_LZ4HC=m
+CONFIG_CRYPTO_ANSI_CPRNG=m
+CONFIG_CRC_CCITT=m
+CONFIG_CRC7=m
+CONFIG_LIBCRC32C=m
+CONFIG_CRC8=m
+CONFIG_XZ_DEC=y
+CONFIG_XZ_DEC_TEST=m
+CONFIG_CORDIC=m
+CONFIG_DDR=y
diff --git a/board/csky/post-image.sh b/board/csky/post-image.sh
new file mode 100755
index 0000000..7bead4f
--- /dev/null
+++ b/board/csky/post-image.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+# copy board/csky/xxx/gdbinit to images/.gdbinit for
+BOARD_DIR="$(dirname $0)"
+cp -af $BOARD_DIR/${2}/gdbinit $BINARIES_DIR/.gdbinit
diff --git a/board/csky/readme.txt b/board/csky/readme.txt
new file mode 100644
index 0000000..f670773
--- /dev/null
+++ b/board/csky/readme.txt
@@ -0,0 +1,106 @@
+C-SKY Development Kit
+
+Intro
+=====
+
+C-SKY is a CPU Architecture from www.c-sky.com and has it own instruction set.
+Just like arm and mips in linux/arch, it named as 'csky'.
+
+For C-SKY linux kernel it's made up of three components:
+1. linux/arch/csky contains the CPU related linux arch implement, eg: mmu,
+   task-switch, cache control, ... default git repo is here:
+
+   http://github.com/c-sky/csky-linux
+
+2. linux/addons contains the SOC's drivers which haven't committed in official
+   linux source code, but we really need them to make the board run.
+   Here is the default addons git repo:
+
+   http://github.com/c-sky/csky-addons
+
+   Some C-SKY soc vendor has it own addons git repo. And you can specify
+   the git-repo in buildroot configuration.
+
+3. Official Linux kernel source from www.kernel.org :)
+
+Buildroot will download cross compiler tools and make them together building,
+finally setup the rootfs with the packages which spicified in buildroot 
+configuration.
+
+How to build it
+===============
+
+Configure Buildroot
+-------------------
+
+The csky_gx6605s_defconfig configuration is a sample configuration with
+all that is required to bring the gx6605s Development Board:
+
+  $ make csky_gx6605s_defconfig
+
+Build everything
+----------------
+
+Note: you will need to have access to the network, since Buildroot will
+download the packages' sources.
+
+  $ make # All will be done, just wait :)
+
+Result of the build
+-------------------
+
+After building, you should obtain this tree:
+
+    output/images/
+    ├── vmlinux
+    ├── rootfs.tar
+    ├── <board name>.dtb
+    └── .gdbinit
+
+How to run it
+=============
+
+1. Download the Jtag-Server here:
+
+   https://pan.baidu.com/s/1o7VEPbO
+
+   install it and run it:
+
+   $ DebugServerConsole -ddc -rstwait 1000 -prereset -port 1025
+
+2. Prepare the nfs-server in your linux PC. You can get the step in google, we
+   don't mention it here.
+
+   Then extract output/images/rootfs.tar to your nfsroot.
+
+3. Modified the bootargs in board/csky/<board>/<board>.dts'. You should
+   specify the correct nfsroot= and ip=, for example in gx6605s.dts:
+
+	chosen {
+   		bootargs = "console=ttyS0,115200 init=/sbin/init root=/dev/nfs\
+rw nfsroot=192.168.101.230:/opt/nfs/test,v3,tcp,nolock ip=192.168.101.25";
+	}
+
+   You need cd to buildroot dir and '$ make' again to update the dts in
+   output/images
+
+
+4. Setup the Console with the rate 115200/8-N-1.
+
+5. cd to the output/images and run.
+
+   For gx6605s, you need plug a usb ethernet card:
+   $csky-linux-gdb vmlinux
+
+Finish
+======
+
+Any question contact me here:
+
+ren_guo@c-sky.com
+
+-----------
+Best Regards
+
+Guo Ren
+
diff --git a/configs/csky_gx6605s_defconfig b/configs/csky_gx6605s_defconfig
new file mode 100644
index 0000000..f5862dd
--- /dev/null
+++ b/configs/csky_gx6605s_defconfig
@@ -0,0 +1,19 @@
+BR2_csky=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="https://github.com/c-sky/tools/raw/master/csky-linux-tools-x86_64-glibc-linux-4.9.2-20170227.tar.gz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="csky-linux"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_5=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_9=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
+BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
+BR2_SYSTEM_DHCP="eth0"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/csky/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="gx6605s"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="https://github.com/c-sky/linux-4.9.y/archive/HEAD.tar.gz"
+BR2_LINUX_KERNEL_DEFCONFIG="gx66xx"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="gx6605s"
