diff --git a/ChangeLog b/ChangeLog
index aa3a683..dcfd889 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2019-12-03  NIIBE Yutaka  <gniibe@fsij.org>
 
+	* board/board-longan-nano.h: New.
+
 	* mcu/gd32vf103.h: New.
 	* mcu/chx-gd32vf103.c: New.
 	* mcu/clk_gpio_init-gd32vf103.c: New.
diff --git a/board/board-longan-nano.h b/board/board-longan-nano.h
new file mode 100644
index 0000000..67d0d9d
--- /dev/null
+++ b/board/board-longan-nano.h
@@ -0,0 +1,69 @@
+#define BOARD_NAME "Longan-nano"
+#define BOARD_ID    0xe65dace7
+/* echo -n "Longan-nano" | sha256sum | sed -e 's/^.*\(........\)  -$/\1/' */
+
+#define MCU_CORE_BUMBLEBEE 1
+#define MCU_GD32VF1        1
+/*
+ * XTAL clock =  8 MHz
+ * Core clock = 96 MHz
+ * AHB  clock = 96 MHz
+ * APB1 clock = 48 MHz
+ * APB2 clock = 96 MHz
+ * USB clock  = 48 MHz
+ * ADC clock  = ???
+ */
+
+/* HXTAL 8MHz input => PLL output = 8 * 12 = 96 MHz */
+#define RCU_CFG0_PLL_MUL_VALUE RCU_CFG0_PLL_MUL12
+
+#define GPIO_LED   GPIOC
+#define GPIO_LED_CLEAR_TO_EMIT     13 /* LED Red */
+#define GPIO_USB   GPIOA
+#define GPIO_OTHER GPIOB
+
+/*
+ * Port A setup.
+ *
+ * PA1  - Push-pull output 2MHz 1 default (LED green 0: ON 1: OFF)
+ * PA2  - Push-pull output 2MHz 1 default (LED blue  0: ON 1: OFF)
+ * PA3  - 
+ * PA4  - <Can be used for GPIO>
+ * PA5  - AF output push-pull 50MHz: SPI0_SCK
+ * PA6  - Input pull-up: SPI0_MISO (master)
+ * PA7  - AF output push-pull 50MHz: SPI0_MOSI (master)
+ * PA8  - (USBFS_SOF)
+ * PA9  - AF output push-pull 2MHz: USART0_TX (USBFS_VBUS)
+ * PA10 - Input pull-up: USART0_RX0 (USBFS_ID)
+ * PA11 - Push Pull output 10MHz 0 default (until USB enabled???) (USBDM)
+ * PA12 - Push Pull output 10MHz 0 default (until USB enabled???) (USBDP)
+ * ------------------------ Default
+ * PAx  - input with pull-up.
+ */
+#define VAL_GPIO_USB_ODR   0xFFFFE6FF
+#define VAL_GPIO_USB_CRL   0xB8B88228      /*  PA7...PA0 */
+#define VAL_GPIO_USB_CRH   0x888118A8      /* PA15...PA8 */
+
+#define RCU_APB2_GPIO      (RCU_APB2_GPIOA|RCU_APB2_GPIOB|RCU_APB2_GPIOC)
+
+/*
+ * PB0 - Push-pull output 10MHz 1 default (OLED D/C#)
+ * PB1 - Push-pull output 10MHz 1 default (OLED CS#)
+ * PB2 - Push-pull output 10MHz 1 default (OLED RST#)
+ */
+#define VAL_GPIO_OTHER_ODR 0xFFFFFFFF
+#define VAL_GPIO_OTHER_CRL 0x88888111      /*  PB7...PB0 */
+#define VAL_GPIO_OTHER_CRH 0x88888888      /* PB15...PB8 */
+
+/*
+ * PC13 - Push-pull output 2MHz 1 default (LED red  0: ON 1: OFF)
+ */
+#define VAL_GPIO_LED_ODR 0xFFFFFFFF
+#define VAL_GPIO_LED_CRL 0x88888888      /*  PC7...PC0 */
+#define VAL_GPIO_LED_CRH 0x88288888      /* PC15...PC8 */
+
+/*
+ * Board specific information other than clock and GPIO initial
+ * setting should not be in board-*.h, but each driver should include
+ * such specific information by itself.
+ */