diff --git a/Ubiquitous/XiZi_AIoT/services/boards/jh7110/Makefile b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/Makefile
new file mode 100644
index 000000000..6c59a35cd
--- /dev/null
+++ b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/Makefile
@@ -0,0 +1,28 @@
+ifeq ($(BOARD), jh7110)
+toolchain ?= riscv64-unknown-elf-
+user_ldflags = -N -Ttext 0
+cflags = -Wall -O0 -g -std=c11 -nostdlib -nodefaultlibs -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -ggdb -Wno-unused -Werror -fno-omit-frame-pointer -fno-stack-protector -fno-pie
+endif
+
+cc = ${toolchain}gcc
+ld = ${toolchain}g++
+objdump = ${toolchain}objdump
+
+c_useropts = -O2
+
+INC_DIR = 	-I$(KERNEL_ROOT)/services/fs/libfs \
+			-I$(KERNEL_ROOT)/services/lib/ipc \
+		  	-I$(KERNEL_ROOT)/services/lib/memory \
+			-I$(KERNEL_ROOT)/services/lib/serial \
+			-I$(KERNEL_ROOT)/services/lib/usyscall \
+			-I$(KERNEL_ROOT)/services/boards/$(BOARD) \
+			-I$(KERNEL_ROOT)/services/app
+
+board: libserial.o arch_usyscall.o stub.o
+	@mv $^ $(KERNEL_ROOT)/services/app
+
+%.o: %.c
+	@echo "cc $^"
+	@${cc} ${cflags} ${c_useropts} ${INC_DIR} -o $@ -c $^
+
+include $(KERNEL_ROOT)/compiler.mk
diff --git a/Ubiquitous/XiZi_AIoT/services/boards/jh7110/arch_usyscall.c b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/arch_usyscall.c
new file mode 100644
index 000000000..4f9eceb3c
--- /dev/null
+++ b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/arch_usyscall.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+#include "usyscall.h"
+
+int syscall(int sys_num, intptr_t a1, intptr_t a2, intptr_t a3, intptr_t a4)
+{
+    int ret = -1;
+
+    __asm__ volatile(
+        "mv a0, %1;\
+        mv a1, %2;\
+        mv a2, %3;\
+        mv a3, %4;\
+        mv a4, %5;\
+        ecall;\
+        mv %0, a0"
+        : "=r"(ret)
+        : "r"(sys_num), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
+        : "memory", "a0", "a1", "a2", "a3", "a4"
+    );
+
+    return ret;
+}
\ No newline at end of file
diff --git a/Ubiquitous/XiZi_AIoT/services/boards/jh7110/libserial.c b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/libserial.c
new file mode 100644
index 000000000..15c5dbd2a
--- /dev/null
+++ b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/libserial.c
@@ -0,0 +1,250 @@
+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+/// this file is only used for debug
+#include <stddef.h>
+#include <stdint.h>
+
+#include "libserial.h"
+#include "usyscall.h"
+
+/*
+ * For driver model we always use one byte per register, and sort out the
+ * differences in the driver
+ */
+#define CONFIG_SYS_NS16550_REG_SIZE (-1)
+
+#define UART_REG(x)  \
+    unsigned char x; \
+    unsigned char postpad_##x[-CONFIG_SYS_NS16550_REG_SIZE - 1];
+
+/**
+ * struct ns16550_platdata - information about a NS16550 port
+ *
+ * @base:		Base register address
+ * @reg_shift:		Shift size of registers (0=byte, 1=16bit, 2=32bit...)
+ * @clock:		UART base clock speed in Hz
+ */
+struct ns16550_platdata {
+    unsigned long base;
+    int reg_shift;
+    int clock;
+    int reg_offset;
+    uint32_t fcr;
+};
+
+struct udevice;
+
+struct NS16550 {
+    UART_REG(rbr); /* 0 */
+    UART_REG(ier); /* 1 */
+    UART_REG(fcr); /* 2 */
+    UART_REG(lcr); /* 3 */
+    UART_REG(mcr); /* 4 */
+    UART_REG(lsr); /* 5 */
+    UART_REG(msr); /* 6 */
+    UART_REG(spr); /* 7 */
+#ifdef CONFIG_SOC_DA8XX
+    UART_REG(reg8); /* 8 */
+    UART_REG(reg9); /* 9 */
+    UART_REG(revid1); /* A */
+    UART_REG(revid2); /* B */
+    UART_REG(pwr_mgmt); /* C */
+    UART_REG(mdr1); /* D */
+#else
+    UART_REG(mdr1); /* 8 */
+    UART_REG(reg9); /* 9 */
+    UART_REG(regA); /* A */
+    UART_REG(regB); /* B */
+    UART_REG(regC); /* C */
+    UART_REG(regD); /* D */
+    UART_REG(regE); /* E */
+    UART_REG(uasr); /* F */
+    UART_REG(scr); /* 10*/
+    UART_REG(ssr); /* 11*/
+#endif
+#ifdef CONFIG_DM_SERIAL
+    struct ns16550_platdata* plat;
+#endif
+};
+
+#define thr rbr
+#define iir fcr
+#define dll rbr
+#define dlm ier
+
+typedef struct NS16550* NS16550_t;
+
+/*
+ * These are the definitions for the FIFO Control Register
+ */
+#define UART_FCR_FIFO_EN 0x01 /* Fifo enable */
+#define UART_FCR_CLEAR_RCVR 0x02 /* Clear the RCVR FIFO */
+#define UART_FCR_CLEAR_XMIT 0x04 /* Clear the XMIT FIFO */
+#define UART_FCR_DMA_SELECT 0x08 /* For DMA applications */
+#define UART_FCR_TRIGGER_MASK 0xC0 /* Mask for the FIFO trigger range */
+#define UART_FCR_TRIGGER_1 0x00 /* Mask for trigger set at 1 */
+#define UART_FCR_TRIGGER_4 0x40 /* Mask for trigger set at 4 */
+#define UART_FCR_TRIGGER_8 0x80 /* Mask for trigger set at 8 */
+#define UART_FCR_TRIGGER_14 0xC0 /* Mask for trigger set at 14 */
+
+#define UART_FCR_RXSR 0x02 /* Receiver soft reset */
+#define UART_FCR_TXSR 0x04 /* Transmitter soft reset */
+
+/* Ingenic JZ47xx specific UART-enable bit. */
+#define UART_FCR_UME 0x10
+
+/* Clear & enable FIFOs */
+#define UART_FCR_DEFVAL (UART_FCR_FIFO_EN | UART_FCR_RXSR | UART_FCR_TXSR)
+
+/*
+ * These are the definitions for the Modem Control Register
+ */
+#define UART_MCR_DTR 0x01 /* DTR   */
+#define UART_MCR_RTS 0x02 /* RTS   */
+#define UART_MCR_OUT1 0x04 /* Out 1 */
+#define UART_MCR_OUT2 0x08 /* Out 2 */
+#define UART_MCR_LOOP 0x10 /* Enable loopback test mode */
+#define UART_MCR_AFE 0x20 /* Enable auto-RTS/CTS */
+
+#define UART_MCR_DMA_EN 0x04
+#define UART_MCR_TX_DFR 0x08
+
+/*
+ * These are the definitions for the Line Control Register
+ *
+ * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting
+ * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits.
+ */
+#define UART_LCR_WLS_MSK 0x03 /* character length select mask */
+#define UART_LCR_WLS_5 0x00 /* 5 bit character length */
+#define UART_LCR_WLS_6 0x01 /* 6 bit character length */
+#define UART_LCR_WLS_7 0x02 /* 7 bit character length */
+#define UART_LCR_WLS_8 0x03 /* 8 bit character length */
+#define UART_LCR_STB 0x04 /* # stop Bits, off=1, on=1.5 or 2) */
+#define UART_LCR_PEN 0x08 /* Parity eneble */
+#define UART_LCR_EPS 0x10 /* Even Parity Select */
+#define UART_LCR_STKP 0x20 /* Stick Parity */
+#define UART_LCR_SBRK 0x40 /* Set Break */
+#define UART_LCR_BKSE 0x80 /* Bank select enable */
+#define UART_LCR_DLAB 0x80 /* Divisor latch access bit */
+
+/*
+ * These are the definitions for the Line Status Register
+ */
+#define UART_LSR_DR 0x01 /* Data ready */
+#define UART_LSR_OE 0x02 /* Overrun */
+#define UART_LSR_PE 0x04 /* Parity error */
+#define UART_LSR_FE 0x08 /* Framing error */
+#define UART_LSR_BI 0x10 /* Break */
+#define UART_LSR_THRE 0x20 /* Xmit holding register empty */
+#define UART_LSR_TEMT 0x40 /* Xmitter empty */
+#define UART_LSR_ERR 0x80 /* Error */
+
+#define UART_MSR_DCD 0x80 /* Data Carrier Detect */
+#define UART_MSR_RI 0x40 /* Ring Indicator */
+#define UART_MSR_DSR 0x20 /* Data Set Ready */
+#define UART_MSR_CTS 0x10 /* Clear to Send */
+#define UART_MSR_DDCD 0x08 /* Delta DCD */
+#define UART_MSR_TERI 0x04 /* Trailing edge ring indicator */
+#define UART_MSR_DDSR 0x02 /* Delta DSR */
+#define UART_MSR_DCTS 0x01 /* Delta CTS */
+
+/*
+ * These are the definitions for the Interrupt Identification Register
+ */
+#define UART_IIR_NO_INT 0x01 /* No interrupts pending */
+#define UART_IIR_ID 0x06 /* Mask for the interrupt ID */
+
+#define UART_IIR_MSI 0x00 /* Modem status interrupt */
+#define UART_IIR_THRI 0x02 /* Transmitter holding register empty */
+#define UART_IIR_RDI 0x04 /* Receiver data interrupt */
+#define UART_IIR_RLSI 0x06 /* Receiver line status interrupt */
+
+/*
+ * These are the definitions for the Interrupt Enable Register
+ */
+#define UART_IER_MSI 0x08 /* Enable Modem status interrupt */
+#define UART_IER_RLSI 0x04 /* Enable receiver line status interrupt */
+#define UART_IER_THRI 0x02 /* Enable Transmitter holding register int. */
+#define UART_IER_RDI 0x01 /* Enable receiver data interrupt */
+
+/* useful defaults for LCR */
+#define UART_LCR_8N1 0x03
+
+#define UART_ADDR (0xFE660000)
+
+#define UART_LCRVAL UART_LCR_8N1 /* 8 data, 1 stop, no parity */
+#define UART_MCRVAL (UART_MCR_DTR | UART_MCR_RTS) /* RTS/DTR */
+
+#define out_le32(a, v) (*(volatile uint32_t*)(a) = (v))
+#define in_le32(a) (*(volatile uint32_t*)(a))
+
+#ifndef CONFIG_SYS_NS16550_IER
+#define CONFIG_SYS_NS16550_IER 0x00
+#endif /* CONFIG_SYS_NS16550_IER */
+
+#define serial_dout(reg, value)                                                   \
+    serial_out_shift((char*)com_port + ((char*)reg - (char*)com_port) * (1 << 2), \
+        2, value)
+#define serial_din(reg)                                                          \
+    serial_in_shift((char*)com_port + ((char*)reg - (char*)com_port) * (1 << 2), \
+        2)
+
+static inline void serial_out_shift(void* addr, int shift, int value)
+{
+    out_le32(addr, value);
+}
+
+static inline int serial_in_shift(void* addr, int shift)
+{
+    return in_le32(addr);
+}
+
+#ifndef CONFIG_SYS_NS16550_CLK
+#define CONFIG_SYS_NS16550_CLK 0
+#endif
+
+bool init_uart_mmio()
+{
+    static int mapped = 0;
+    if (mapped == 0) {
+        if (-1 == mmap(UART_ADDR, UART_ADDR, 4096, true)) {
+            return false;
+        }
+        mapped = 1;
+    }
+    return true;
+}
+
+void putc(char ch)
+{
+    static struct NS16550* com_port = (struct NS16550*)UART_ADDR;
+
+    if (ch == '\n') {
+        putc('\r');
+    }
+
+    while (!(serial_din(&com_port->lsr) & UART_LSR_THRE))
+        ;
+    serial_dout(&com_port->thr, ch);
+}
+
+char getc(void)
+{
+    static struct NS16550* com_port = (struct NS16550*)UART_ADDR;
+
+    while (!(serial_din(&com_port->lsr) & UART_LSR_DR))
+        ;
+
+    return serial_din(&com_port->rbr);
+}
\ No newline at end of file
diff --git a/Ubiquitous/XiZi_AIoT/services/boards/jh7110/stub.c b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/stub.c
new file mode 100644
index 000000000..c2c3af9d4
--- /dev/null
+++ b/Ubiquitous/XiZi_AIoT/services/boards/jh7110/stub.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+// _exit: 用于退出程序
+void _exit(int status)
+{
+    while (1) { }
+}
+
+// _sbrk: 用于增加程序的数据空间
+void* _sbrk(ptrdiff_t incr)
+{
+    extern char end; /* Defined by the linker */
+    static char* heap_end;
+    char* prev_heap_end;
+
+    if (heap_end == 0) {
+        heap_end = &end;
+    }
+    prev_heap_end = heap_end;
+
+    // 在这里，你应该添加一些检查来确保堆不会与栈或其他内存区域冲突
+    // 例如，检查 incr 是否会导致堆超出预定的内存区域
+
+    heap_end += incr;
+    return (void*)prev_heap_end;
+}
+
+// _write: 用于将数据写入文件描述符
+ssize_t _write(int file, const void* ptr, size_t len)
+{
+    // 在这里，你需要实现将数据写入文件描述符的逻辑
+    // 如果你的系统不支持文件系统，你可以将数据发送到串口或其他输出
+
+    return len; // 假设所有数据都被写入
+}
+
+// _close: 用于关闭文件描述符
+int _close(int file)
+{
+    return -1; // 表示失败，因为没有实际关闭文件的功能
+}
+
+// _fstat: 用于获取文件状态
+int _fstat(int file, struct stat* st)
+{
+    return 0; // 表示成功
+}
+
+// _isatty: 检查文件描述符是否指向TTY设备
+int _isatty(int file)
+{
+    return 1; // 表示是TTY设备
+}
+
+// _lseek: 用于重新定位文件读/写的位置
+off_t _lseek(int file, off_t offset, int whence)
+{
+    return -1; // 表示失败，因为不支持文件定位
+}
+
+// _read: 用于从文件描述符读取数据
+ssize_t _read(int file, void* ptr, size_t len)
+{
+    return 0; // 表示没有数据被读取
+}
+
+// _kill: 发送信号给进程
+int _kill(int pid, int sig)
+{
+    return -1; // 表示失败，因为不支持信号
+}
+
+// _getpid: 获取进程ID
+int _getpid()
+{
+    return 1; // 返回假设的进程ID
+}