[bsp] Adapt ls{1b,1c}dev to new mips common code

LS1C selfboot feature have been rewiritten, and we changed
bare boot base to 0x80000000 to better utilize memory.

Signed-off-by: Jiaxun Yang <[email protected]>

24 files changed, 1376 insertions, 972 deletions

diff --git a/bsp/ls1bdev/Kconfig b/bsp/ls1bdev/Kconfig
new file mode 100644
index 0000000000..c1788b1c6b
--- /dev/null
+++ b/bsp/ls1bdev/Kconfig
@@ -0,0 +1,44 @@
+mainmenu "RT-Thread 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 "$RTT_DIR/Kconfig"
+source "$RTT_DIR/libcpu/mips/common/Kconfig"
+source "$PKGS_DIR/Kconfig"
+
+config SOC_LS1B
+    bool
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    default y
+
+if RT_USING_SERIAL
+config RT_USING_UART0
+    bool "Using RT_USING_UART0"
+    default y
+config RT_USING_UART1
+    bool "Using RT_USING_UART1"
+    default n
+config RT_USING_UART3
+    bool "Using RT_USING_UART3"
+    default n
+
+config RT_UART_RX_BUFFER_SIZE
+    int "The rx buffer size"
+    default 64 if RT_USING_SERIAL
+    default 64
+endif
+
diff --git a/bsp/ls1bdev/SConstruct b/bsp/ls1bdev/SConstruct
index cc52d5f22d..3fe0da6a6f 100644
--- a/bsp/ls1bdev/SConstruct
+++ b/bsp/ls1bdev/SConstruct
@@ -14,10 +14,10 @@ TARGET = 'rtthread.' + 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',
-	LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
 env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
 
 Export('RTT_ROOT')
diff --git a/bsp/ls1bdev/applications/application.c b/bsp/ls1bdev/applications/application.c
deleted file mode 100644
index 3daf489a3e..0000000000
--- a/bsp/ls1bdev/applications/application.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * File      : application.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2012, RT-Thread Develop Team
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE
- *
- * Change Logs:
- * Date           Author       Notes
- * 2010-06-25     Bernard      first version
- * 2011-08-08     lgnq         modified for Loongson LS1B
- */
-
-#include <rtthread.h>
-#include <ls1b.h>
-
-#ifdef RT_USING_RTGUI
-#include <rtgui/rtgui.h>
-extern void rt_hw_dc_init(void);
-#endif
-
-void rt_init_thread_entry(void *parameter)
-{
-#ifdef RT_USING_RTGUI
-	{
-		rt_device_t dc;
-
-		/* init Display Controller */
-		rt_hw_dc_init();
-
-		/* find Display Controller device */
-		dc = rt_device_find("dc");
-
-		/* set Display Controller device as rtgui graphic driver */
-		rtgui_graphic_set_device(dc);
-	}
-#endif
-
-#ifdef RT_USING_COMPONENTS_INIT
-	/* initialization RT-Thread Components */
-	rt_components_init();
-#endif
-}
-
-int rt_application_init(void)
-{
-	rt_thread_t tid;
-
-	/* create initialization thread */
-	tid = rt_thread_create("init",
-							rt_init_thread_entry, RT_NULL,
-							4096, 8, 20);
-	if (tid != RT_NULL)
-		rt_thread_startup(tid);
-
-	return 0;
-}
diff --git a/bsp/ls1bdev/applications/main.c b/bsp/ls1bdev/applications/main.c
new file mode 100644
index 0000000000..fac004d832
--- /dev/null
+++ b/bsp/ls1bdev/applications/main.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-05-10     zhuangwei    first version
+ */
+
+#include <rtthread.h>
+
+int main(int argc, char** argv)
+{   
+
+    return 0;
+}
diff --git a/bsp/ls1bdev/applications/startup.c b/bsp/ls1bdev/applications/startup.c
deleted file mode 100644
index deedf962f6..0000000000
--- a/bsp/ls1bdev/applications/startup.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * File      : startup.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2012, RT-Thread Develop Team
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE
- *
- * Change Logs:
- * Date           Author       Notes
- * 2010-06-25     Bernard      first version
- * 2011-08-08     lgnq         modified for Loongson LS1B
- */
-
-#include <rthw.h>
-#include <rtthread.h>
-
-#include "board.h"
-#define A_K0BASE		0x80000000
-
-/**
- * @addtogroup Loongson LS1B
- */
-
-/*@{*/
-
-extern unsigned char __bss_end;
-
-extern int rt_application_init(void);
-
-extern void tlb_refill_exception(void);
-extern void general_exception(void);
-extern void irq_exception(void);
-extern void rt_hw_cache_init(void);
-extern void invalidate_writeback_dcache_all(void);
-extern void invalidate_icache_all(void);
-
-/**
- * This function will startup RT-Thread RTOS.
- */
-void rtthread_startup(void)
-{
-    /* disable interrupt first */
-    rt_hw_interrupt_disable();
-
-    /* init cache */
-    rt_hw_cache_init();
-    /* init hardware interrupt */
-    rt_hw_interrupt_init();
-
-    /* copy vector */
-    rt_memcpy((void *)A_K0BASE, tlb_refill_exception, 0x20);
-    rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x20);
-    rt_memcpy((void *)(A_K0BASE + 0x200), irq_exception, 0x20);
-
-    invalidate_writeback_dcache_all();
-    invalidate_icache_all();
-
-    /* init board */
-    rt_hw_board_init();
-
-    /* show version */
-    rt_show_version();
-
-#ifdef RT_USING_HEAP
-    rt_system_heap_init((void*)&__bss_end, (void*)RT_HW_HEAP_END);
-#endif
-
-    /* init scheduler system */
-    rt_system_scheduler_init();
-
-    /* initialize timer */
-    rt_system_timer_init();
-
-    /* initialize timer thread */
-    rt_system_timer_thread_init();
-
-    /* init idle thread */
-    rt_thread_idle_init();
-
-    /* init application */
-    rt_application_init();
-
-    /* start scheduler */
-    rt_system_scheduler_start();
-
-    /* never reach here */
-    return;
-}
-
-/*@}*/
diff --git a/bsp/ls1bdev/drivers/board.c b/bsp/ls1bdev/drivers/board.c
index 307d8d28b0..e25c6267d5 100644
--- a/bsp/ls1bdev/drivers/board.c
+++ b/bsp/ls1bdev/drivers/board.c
@@ -11,6 +11,7 @@
  * Date           Author       Notes
  * 2010-06-25     Bernard      first version
  * 2011-08-08     lgnq         modified for Loongson LS1B
+ * 2019-12-04     Jiaxun Yang  Adapt new MIPS generic code
  */
 
 #include <rtthread.h>
@@ -20,6 +21,14 @@
 #include "uart.h"
 #include "ls1b.h"
 
+#ifdef RT_USING_RTGUI
+#include <rtgui/rtgui.h>
+rt_device_t dc;
+extern void rt_hw_dc_init(void);
+#endif
+
+extern unsigned char __bss_end;
+
 /**
  * @addtogroup Loongson LS1B
  */
@@ -27,85 +36,53 @@
 /*@{*/
 
 /**
- * This is the timer interrupt service routine.
- */
-void rt_hw_timer_handler(void)
-{
-	unsigned int count;
-
-	count = read_c0_compare();
-	write_c0_compare(count);
-	write_c0_count(0);
-
-	/* increase a OS tick */
-	rt_tick_increase();
-}
-
-/**
- * This function will initial OS timer
- */
-void rt_hw_timer_init(void)
-{
-	write_c0_compare(CPU_HZ/2/RT_TICK_PER_SECOND);
-	write_c0_count(0);
-}
-
-/**
  * This function will initial sam7s64 board.
  */
 void rt_hw_board_init(void)
 {
-#ifdef RT_USING_UART
-	/* init hardware UART device */
-	rt_hw_uart_init();
+    /* init hardware interrupt */
+    rt_hw_exception_init();
+    
+    /* init hardware interrupt */
+    rt_hw_interrupt_init();
+    
+#ifdef RT_USING_HEAP
+    rt_system_heap_init((void*)&__bss_end, (void*)RT_HW_HEAP_END);
+#endif
+
+#ifdef RT_USING_SERIAL
+    /* init hardware UART device */
+    rt_hw_uart_init();
 #endif
 
 #ifdef RT_USING_CONSOLE
-	/* set console device */
-	rt_console_set_device("uart0");
+    /* set console device */
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
 #endif
+    /* init operating system timer */
+    rt_hw_timer_init();
 
-	/* init operating system timer */
-	rt_hw_timer_init();
+#ifdef RT_USING_FPU
+    /* init hardware fpu */
+    rt_hw_fpu_init();
+#endif
 
-	rt_kprintf("current sr: 0x%08x\n", read_c0_status());
-}
+#ifdef RT_USING_RTGUI
+    rt_device_t dc;
 
-#define __raw_out_put(unr) \
-	while (*ptr) \
-	{ \
-		if (*ptr == '\n') \
-		{ \
-			/* FIFO status, contain valid data */ \
-			while (!(UART_LSR(UART##unr##_BASE) & (UARTLSR_TE | UARTLSR_TFE))); \
-			/* write data */ \
-			UART_DAT(UART##unr##_BASE) = '\r'; \
-		} \
-		/* FIFO status, contain valid data */ \
-		while (!(UART_LSR(UART##unr##_BASE) & (UARTLSR_TE | UARTLSR_TFE))); \
-		/* write data */ \
-		UART_DAT(UART##unr##_BASE) = *ptr; \
-		ptr ++; \
-	}
+    /* init Display Controller */
+    rt_hw_dc_init();
 
-/* UART line status register value */
-#define UARTLSR_ERROR	(1 << 7)
-#define UARTLSR_TE		(1 << 6)
-#define UARTLSR_TFE		(1 << 5)
-#define UARTLSR_BI		(1 << 4)
-#define UARTLSR_FE		(1 << 3)
-#define UARTLSR_PE		(1 << 2)
-#define UARTLSR_OE		(1 << 1)
-#define UARTLSR_DR		(1 << 0)
-void rt_hw_console_output(const char *ptr)
-{
-#if defined(RT_USING_UART0)
-    __raw_out_put(0);
-#elif defined(RT_USING_UART1)
-    __raw_out_put(1);
-#elif defined(RT_USING_UART3)
-    __raw_out_put(3);
+    /* find Display Controller device */
+    dc = rt_device_find("dc");
+
+    /* set Display Controller device as rtgui graphic driver */
+    rtgui_graphic_set_device(dc);
 #endif
-}
 
+#ifdef RT_USING_COMPONENTS_INIT
+    rt_components_board_init();
+#endif
+
+}
 /*@}*/
diff --git a/bsp/ls1bdev/drivers/uart.c b/bsp/ls1bdev/drivers/uart.c
index c4ddb581e6..e920d33057 100644
--- a/bsp/ls1bdev/drivers/uart.c
+++ b/bsp/ls1bdev/drivers/uart.c
@@ -23,257 +23,257 @@
 
 /*@{*/
 
-#if defined(RT_USING_UART) && defined(RT_USING_DEVICE)
+#if defined(RT_USING_DEVICE)
 
 struct rt_uart_ls1b
 {
-	struct rt_device parent;
+    struct rt_device parent;
 
-	rt_uint32_t hw_base;
-	rt_uint32_t irq;
+    rt_uint32_t hw_base;
+    rt_uint32_t irq;
 
-	/* buffer for reception */
-	rt_uint8_t read_index, save_index;
-	rt_uint8_t rx_buffer[RT_UART_RX_BUFFER_SIZE];
+    /* buffer for reception */
+    rt_uint8_t read_index, save_index;
+    rt_uint8_t rx_buffer[RT_UART_RX_BUFFER_SIZE];
 }uart_device;
 
 static void rt_uart_irqhandler(int irqno, void *param)
 {
-	rt_ubase_t level;
-	rt_uint8_t isr;
-	struct rt_uart_ls1b *uart = &uart_device;
+    rt_ubase_t level;
+    rt_uint8_t isr;
+    struct rt_uart_ls1b *uart = &uart_device;
 
-	/* read interrupt status and clear it */
-	isr = UART_IIR(uart->hw_base);
-	isr = (isr >> 1) & 0x3;
+    /* read interrupt status and clear it */
+    isr = UART_IIR(uart->hw_base);
+    isr = (isr >> 1) & 0x3;
 
-	/* receive data available */
-	if (isr & 0x02)
-	{
-		/* Receive Data Available */
-		while (UART_LSR(uart->hw_base) & UARTLSR_DR)
-		{
-			uart->rx_buffer[uart->save_index] = UART_DAT(uart->hw_base);
+    /* receive data available */
+    if (isr & 0x02)
+    {
+        /* Receive Data Available */
+        while (UART_LSR(uart->hw_base) & UARTLSR_DR)
+        {
+            uart->rx_buffer[uart->save_index] = UART_DAT(uart->hw_base);
 
-			level = rt_hw_interrupt_disable();
-			uart->save_index ++;
-			if (uart->save_index >= RT_UART_RX_BUFFER_SIZE)
-				uart->save_index = 0;
-			rt_hw_interrupt_enable(level);
-		}
+            level = rt_hw_interrupt_disable();
+            uart->save_index ++;
+            if (uart->save_index >= RT_UART_RX_BUFFER_SIZE)
+                uart->save_index = 0;
+            rt_hw_interrupt_enable(level);
+        }
 
-		/* invoke callback */
-		if (uart->parent.rx_indicate != RT_NULL)
-		{
-			rt_size_t length;
-			if (uart->read_index > uart->save_index)
-				length = RT_UART_RX_BUFFER_SIZE - uart->read_index + uart->save_index;
-			else
-				length = uart->save_index - uart->read_index;
+        /* invoke callback */
+        if (uart->parent.rx_indicate != RT_NULL)
+        {
+            rt_size_t length;
+            if (uart->read_index > uart->save_index)
+                length = RT_UART_RX_BUFFER_SIZE - uart->read_index + uart->save_index;
+            else
+                length = uart->save_index - uart->read_index;
 
-			uart->parent.rx_indicate(&uart->parent, length);
-		}
-	}
+            uart->parent.rx_indicate(&uart->parent, length);
+        }
+    }
 
-	return;
+    return;
 }
 
 static rt_err_t rt_uart_init(rt_device_t dev)
 {
-	rt_uint32_t baud_div;
-	struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
+    rt_uint32_t baud_div;
+    struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
 
-	RT_ASSERT(uart != RT_NULL);
+    RT_ASSERT(uart != RT_NULL);
 
 #if 0
-	/* init UART Hardware */
-	UART_IER(uart->hw_base) = 0; /* clear interrupt */
-	UART_FCR(uart->hw_base) = 0x60; /* reset UART Rx/Tx */
+    /* init UART Hardware */
+    UART_IER(uart->hw_base) = 0; /* clear interrupt */
+    UART_FCR(uart->hw_base) = 0x60; /* reset UART Rx/Tx */
 
-	/* enable UART clock */
-	/* set databits, stopbits and parity. (8-bit data, 1 stopbit, no parity) */
-	UART_LCR(uart->hw_base) = 0x3;
+    /* enable UART clock */
+    /* set databits, stopbits and parity. (8-bit data, 1 stopbit, no parity) */
+    UART_LCR(uart->hw_base) = 0x3;
 
-	/* set baudrate */
-	baud_div = DEV_CLK / 16 / UART_BAUDRATE;
-	UART_LCR(uart->hw_base) |= UARTLCR_DLAB;
+    /* set baudrate */
+    baud_div = DEV_CLK / 16 / UART_BAUDRATE;
+    UART_LCR(uart->hw_base) |= UARTLCR_DLAB;
 
-	UART_MSB(uart->hw_base) = (baud_div >> 8) & 0xff;
-	UART_LSB(uart->hw_base) = baud_div & 0xff;
+    UART_MSB(uart->hw_base) = (baud_div >> 8) & 0xff;
+    UART_LSB(uart->hw_base) = baud_div & 0xff;
 
-	UART_LCR(uart->hw_base) &= ~UARTLCR_DLAB;
+    UART_LCR(uart->hw_base) &= ~UARTLCR_DLAB;
 
-	/* Enable UART unit, enable and clear FIFO */
-	UART_FCR(uart->hw_base) = UARTFCR_UUE | UARTFCR_FE | UARTFCR_TFLS | UARTFCR_RFLS;
+    /* Enable UART unit, enable and clear FIFO */
+    UART_FCR(uart->hw_base) = UARTFCR_UUE | UARTFCR_FE | UARTFCR_TFLS | UARTFCR_RFLS;
 #endif
 
-	return RT_EOK;
+    return RT_EOK;
 }
 
 static rt_err_t rt_uart_open(rt_device_t dev, rt_uint16_t oflag)
 {
-	struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
+    struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
 
-	RT_ASSERT(uart != RT_NULL);
-	if (dev->flag & RT_DEVICE_FLAG_INT_RX)
-	{
-		/* Enable the UART Interrupt */
-		UART_IER(uart->hw_base) |= UARTIER_IRXE;
+    RT_ASSERT(uart != RT_NULL);
+    if (dev->flag & RT_DEVICE_FLAG_INT_RX)
+    {
+        /* Enable the UART Interrupt */
+        UART_IER(uart->hw_base) |= UARTIER_IRXE;
 
-		/* install interrupt */
-		rt_hw_interrupt_install(uart->irq, rt_uart_irqhandler, RT_NULL, "UART");
-		rt_hw_interrupt_umask(uart->irq);
-	}
-	return RT_EOK;
+        /* install interrupt */
+        rt_hw_interrupt_install(uart->irq, rt_uart_irqhandler, RT_NULL, "UART");
+        rt_hw_interrupt_umask(uart->irq);
+    }
+    return RT_EOK;
 }
 
 static rt_err_t rt_uart_close(rt_device_t dev)
 {
-	struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
+    struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
 
-	RT_ASSERT(uart != RT_NULL);
-	if (dev->flag & RT_DEVICE_FLAG_INT_RX)
-	{
-		/* Disable the UART Interrupt */
-		UART_IER(uart->hw_base) &= ~(UARTIER_IRXE);
-	}
+    RT_ASSERT(uart != RT_NULL);
+    if (dev->flag & RT_DEVICE_FLAG_INT_RX)
+    {
+        /* Disable the UART Interrupt */
+        UART_IER(uart->hw_base) &= ~(UARTIER_IRXE);
+    }
 
-	return RT_EOK;
+    return RT_EOK;
 }
 
 static rt_size_t rt_uart_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
 {
-	rt_uint8_t *ptr;
-	struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
+    rt_uint8_t *ptr;
+    struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
 
-	RT_ASSERT(uart != RT_NULL);
+    RT_ASSERT(uart != RT_NULL);
 
-	/* point to buffer */
-	ptr = (rt_uint8_t *)buffer;
-	if (dev->flag & RT_DEVICE_FLAG_INT_RX)
-	{
-		while (size)
-		{
-			/* interrupt receive */
-			rt_base_t level;
+    /* point to buffer */
+    ptr = (rt_uint8_t *)buffer;
+    if (dev->flag & RT_DEVICE_FLAG_INT_RX)
+    {
+        while (size)
+        {
+            /* interrupt receive */
+            rt_base_t level;
 
-			/* disable interrupt */
-			level = rt_hw_interrupt_disable();
-			if (uart->read_index != uart->save_index)
-			{
-				*ptr = uart->rx_buffer[uart->read_index];
+            /* disable interrupt */
+            level = rt_hw_interrupt_disable();
+            if (uart->read_index != uart->save_index)
+            {
+                *ptr = uart->rx_buffer[uart->read_index];
 
-				uart->read_index ++;
-				if (uart->read_index >= RT_UART_RX_BUFFER_SIZE)
-					uart->read_index = 0;
-			}
-			else
-			{
-				/* no data in rx buffer */
+                uart->read_index ++;
+                if (uart->read_index >= RT_UART_RX_BUFFER_SIZE)
+                    uart->read_index = 0;
+            }
+            else
+            {
+                /* no data in rx buffer */
 
-				/* enable interrupt */
-				rt_hw_interrupt_enable(level);
-				break;
-			}
+                /* enable interrupt */
+                rt_hw_interrupt_enable(level);
+                break;
+            }
 
-			/* enable interrupt */
-			rt_hw_interrupt_enable(level);
+            /* enable interrupt */
+            rt_hw_interrupt_enable(level);
 
-			ptr ++;
-			size --;
-		}
+            ptr ++;
+            size --;
+        }
 
-		return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
-	}
+        return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
+    }
 
-	return 0;
+    return 0;
 }
 
 static rt_size_t rt_uart_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
 {
-	char *ptr;
-	struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
+    char *ptr;
+    struct rt_uart_ls1b *uart = (struct rt_uart_ls1b *)dev;
 
-	RT_ASSERT(uart != RT_NULL);
+    RT_ASSERT(uart != RT_NULL);
 
-	ptr = (char *)buffer;
+    ptr = (char *)buffer;
 
-	if (dev->flag & RT_DEVICE_FLAG_STREAM)
-	{
-		/* stream mode */
-		while (size)
-		{
-			if (*ptr == '\n')
-			{
-				/* FIFO status, contain valid data */
-				while (!(UART_LSR(uart->hw_base) & (UARTLSR_TE | UARTLSR_TFE)));
-				/* write data */
-				UART_DAT(uart->hw_base) = '\r';
-			}
+    if (dev->flag & RT_DEVICE_FLAG_STREAM)
+    {
+        /* stream mode */
+        while (size)
+        {
+            if (*ptr == '\n')
+            {
+                /* FIFO status, contain valid data */
+                while (!(UART_LSR(uart->hw_base) & (UARTLSR_TE | UARTLSR_TFE)));
+                /* write data */
+                UART_DAT(uart->hw_base) = '\r';
+            }
 
-			/* FIFO status, contain valid data */
-			while (!(UART_LSR(uart->hw_base) & (UARTLSR_TE | UARTLSR_TFE)));
-			/* write data */
-			UART_DAT(uart->hw_base) = *ptr;
+            /* FIFO status, contain valid data */
+            while (!(UART_LSR(uart->hw_base) & (UARTLSR_TE | UARTLSR_TFE)));
+            /* write data */
+            UART_DAT(uart->hw_base) = *ptr;
 
-			ptr ++;
-			size --;
-		}
-	}
-	else
-	{
-		while (size != 0)
-		{
-			/* FIFO status, contain valid data */
-			while (!(UART_LSR(uart->hw_base) & (UARTLSR_TE | UARTLSR_TFE)));
+            ptr ++;
+            size --;
+        }
+    }
+    else
+    {
+        while (size != 0)
+        {
+            /* FIFO status, contain valid data */
+            while (!(UART_LSR(uart->hw_base) & (UARTLSR_TE | UARTLSR_TFE)));
 
-			/* write data */
-			UART_DAT(uart->hw_base) = *ptr;
+            /* write data */
+            UART_DAT(uart->hw_base) = *ptr;
 
-			ptr++;
-			size--;
-		}
-	}
+            ptr++;
+            size--;
+        }
+    }
 
-	return (rt_size_t)ptr - (rt_size_t)buffer;
+    return (rt_size_t)ptr - (rt_size_t)buffer;
 }
 
 void rt_hw_uart_init(void)
 {
-	struct rt_uart_ls1b *uart;
+    struct rt_uart_ls1b *uart;
 
-	/* get uart device */
-	uart = &uart_device;
+    /* get uart device */
+    uart = &uart_device;
 
-	/* device initialization */
-	uart->parent.type = RT_Device_Class_Char;
-	rt_memset(uart->rx_buffer, 0, sizeof(uart->rx_buffer));
-	uart->read_index = uart->save_index = 0;
+    /* device initialization */
+    uart->parent.type = RT_Device_Class_Char;
+    rt_memset(uart->rx_buffer, 0, sizeof(uart->rx_buffer));
+    uart->read_index = uart->save_index = 0;
 
 #if defined(RT_USING_UART0)
-	uart->hw_base = UART0_BASE;
-	uart->irq = LS1B_UART0_IRQ;
+    uart->hw_base = UART0_BASE;
+    uart->irq = LS1B_UART0_IRQ;
 #elif defined(RT_USING_UART1)
-	uart->hw_base = UART1_BASE;
-	uart->irq = LS1B_UART1_IRQ;
+    uart->hw_base = UART1_BASE;
+    uart->irq = LS1B_UART1_IRQ;
 #elif defined(RT_USING_UART3)
-	uart->hw_base = UART3_BASE;
-	uart->irq = LS1B_UART3_IRQ;
+    uart->hw_base = UART3_BASE;
+    uart->irq = LS1B_UART3_IRQ;
 #endif
 
-	/* device interface */
-	uart->parent.init       = rt_uart_init;
-	uart->parent.open       = rt_uart_open;
-	uart->parent.close      = rt_uart_close;
-	uart->parent.read       = rt_uart_read;
-	uart->parent.write      = rt_uart_write;
-	uart->parent.control    = RT_NULL;
-	uart->parent.user_data  = RT_NULL;
+    /* device interface */
+    uart->parent.init       = rt_uart_init;
+    uart->parent.open       = rt_uart_open;
+    uart->parent.close      = rt_uart_close;
+    uart->parent.read       = rt_uart_read;
+    uart->parent.write      = rt_uart_write;
+    uart->parent.control    = RT_NULL;
+    uart->parent.user_data  = RT_NULL;
 
-	rt_device_register(&uart->parent, "uart0",
-						RT_DEVICE_FLAG_RDWR |
-						RT_DEVICE_FLAG_STREAM |
-						RT_DEVICE_FLAG_INT_RX);
+    rt_device_register(&uart->parent, "uart0",
+                        RT_DEVICE_FLAG_RDWR |
+                        RT_DEVICE_FLAG_STREAM |
+                        RT_DEVICE_FLAG_INT_RX);
 }
 #endif /* end of UART */
 
diff --git a/bsp/ls1bdev/drivers/uart.h b/bsp/ls1bdev/drivers/uart.h
index 2aae7e9ef5..bec660b740 100644
--- a/bsp/ls1bdev/drivers/uart.h
+++ b/bsp/ls1bdev/drivers/uart.h
@@ -16,8 +16,9 @@
 #define __UART_H__
 
 #include "ls1b.h"
+#include <rthw.h>
 
-#define UART0_BASE			0xBFE40000
+#define UART0_BASE		    0xBFE40000
 #define UART0_1_BASE		0xBFE41000
 #define UART0_2_BASE		0xBFE42000
 #define UART0_3_BASE		0xBFE43000
@@ -31,43 +32,43 @@
 #define UART5_BASE			0xBFE7C000
 
 /* UART registers */
-#define UART_DAT(base)		__REG8(base + 0x00)
-#define UART_IER(base)		__REG8(base + 0x01)
-#define UART_IIR(base)		__REG8(base + 0x02)
-#define UART_FCR(base)		__REG8(base + 0x02)
-#define UART_LCR(base)		__REG8(base + 0x03)
-#define UART_MCR(base)		__REG8(base + 0x04)
-#define UART_LSR(base)		__REG8(base + 0x05)
-#define UART_MSR(base)		__REG8(base + 0x06)
+#define UART_DAT(base)		HWREG8(base + 0x00)
+#define UART_IER(base)		HWREG8(base + 0x01)
+#define UART_IIR(base)		HWREG8(base + 0x02)
+#define UART_FCR(base)		HWREG8(base + 0x02)
+#define UART_LCR(base)		HWREG8(base + 0x03)
+#define UART_MCR(base)		HWREG8(base + 0x04)
+#define UART_LSR(base)		HWREG8(base + 0x05)
+#define UART_MSR(base)		HWREG8(base + 0x06)
 
-#define UART_LSB(base)		__REG8(base + 0x00)
-#define UART_MSB(base)		__REG8(base + 0x01)
+#define UART_LSB(base)		HWREG8(base + 0x00)
+#define UART_MSB(base)		HWREG8(base + 0x01)
 
 /* UART0 registers */
-#define UART0_DAT			__REG8(UART0_BASE + 0x00)
-#define UART0_IER			__REG8(UART0_BASE + 0x01)
-#define UART0_IIR			__REG8(UART0_BASE + 0x02)
-#define UART0_FCR			__REG8(UART0_BASE + 0x02)
-#define UART0_LCR			__REG8(UART0_BASE + 0x03)
-#define UART0_MCR			__REG8(UART0_BASE + 0x04)
-#define UART0_LSR			__REG8(UART0_BASE + 0x05)
-#define UART0_MSR			__REG8(UART0_BASE + 0x06)
+#define UART0_DAT			HWREG8(UART0_BASE + 0x00)
+#define UART0_IER			HWREG8(UART0_BASE + 0x01)
+#define UART0_IIR			HWREG8(UART0_BASE + 0x02)
+#define UART0_FCR			HWREG8(UART0_BASE + 0x02)
+#define UART0_LCR			HWREG8(UART0_BASE + 0x03)
+#define UART0_MCR			HWREG8(UART0_BASE + 0x04)
+#define UART0_LSR			HWREG8(UART0_BASE + 0x05)
+#define UART0_MSR			HWREG8(UART0_BASE + 0x06)
 
-#define UART0_LSB			__REG8(UART0_BASE + 0x00)
-#define UART0_MSB			__REG8(UART0_BASE + 0x01)
+#define UART0_LSB			HWREG8(UART0_BASE + 0x00)
+#define UART0_MSB			HWREG8(UART0_BASE + 0x01)
 
 /* UART1 registers */
-#define UART1_DAT			__REG8(UART1_BASE + 0x00)
-#define UART1_IER			__REG8(UART1_BASE + 0x01)
-#define UART1_IIR			__REG8(UART1_BASE + 0x02)
-#define UART1_FCR			__REG8(UART1_BASE + 0x02)
-#define UART1_LCR			__REG8(UART1_BASE + 0x03)
-#define UART1_MCR			__REG8(UART1_BASE + 0x04)
-#define UART1_LSR			__REG8(UART1_BASE + 0x05)
-#define UART1_MSR			__REG8(UART1_BASE + 0x06)
+#define UART1_DAT			HWREG8(UART1_BASE + 0x00)
+#define UART1_IER			HWREG8(UART1_BASE + 0x01)
+#define UART1_IIR			HWREG8(UART1_BASE + 0x02)
+#define UART1_FCR			HWREG8(UART1_BASE + 0x02)
+#define UART1_LCR			HWREG8(UART1_BASE + 0x03)
+#define UART1_MCR			HWREG8(UART1_BASE + 0x04)
+#define UART1_LSR			HWREG8(UART1_BASE + 0x05)
+#define UART1_MSR			HWREG8(UART1_BASE + 0x06)
 
-#define UART1_LSB			__REG8(UART1_BASE + 0x00)
-#define UART1_MSB			__REG8(UART1_BASE + 0x01)
+#define UART1_LSB			HWREG8(UART1_BASE + 0x00)
+#define UART1_MSB			HWREG8(UART1_BASE + 0x01)
 
 /* UART interrupt enable register value */
 #define UARTIER_IME		(1 << 3)
diff --git a/bsp/ls1bdev/ls1b_ram.lds b/bsp/ls1bdev/ls1b_ram.lds
index d453983d7e..872df8ad76 100644
--- a/bsp/ls1bdev/ls1b_ram.lds
+++ b/bsp/ls1bdev/ls1b_ram.lds
@@ -11,6 +11,7 @@
  * Date           Author       Notes
  * 2010-05-17     swkyer       first version
  * 2010-09-04     bernard      move the beginning entry to 0x80200000
+ * 2019-12-04     Jiaxun Yang  Adapt new memory layout
  */
 
 OUTPUT_ARCH(mips)
@@ -19,16 +20,19 @@ GROUP(-lgcc -lc)
 ENTRY(_start)
 SECTIONS
 {
-    . = 0x80200000 ;
-
-    .start :
-    {
-        *(.start);
-    }
-
-    . = ALIGN(4);
+    . = 0x80200000;
     .text : 
     {
+	start = ABSOLUTE(.);
+	 *(.selfboot);
+	 *(.selfboot_data);
+	. = ALIGN(4);
+	__selfboot_end = .;
+	. = ALIGN(0x1000);
+	__ebase_entry = .;
+     	KEEP(*(.exc_vectors))
+     	__ebase_end = .;
+	 *(.start);
          *(.text)
          *(.text.*)
          *(.rodata)
@@ -76,6 +80,15 @@ SECTIONS
          *(.sdata)
          *(.sdata.*)
     }
+    _edata = .;
+
+    .stack :
+    {
+        . = ALIGN(8);
+        _system_stack_start = .;
+        . = . + 0x400; /* 1kb system stack */
+        _system_stack = .;
+    }
 
     .sbss : 
     {
diff --git a/bsp/ls1bdev/readme.txt b/bsp/ls1bdev/readme.md
index 1b7944c636..b47004ecc8 100644
--- a/bsp/ls1bdev/readme.txt
+++ b/bsp/ls1bdev/readme.md
@@ -1,4 +1,4 @@
-this bsp is based on LS1G DEMO BOARD V1.1
+This bsp is based on LS1B DEMO BOARD V1.1
 
 # download script for RT-Thread
 ifaddr syn0 192.168.1.100;load tftp://192.168.1.5/rtthread.elf;g
\ No newline at end of file
diff --git a/bsp/ls1bdev/rtconfig.h b/bsp/ls1bdev/rtconfig.h
index 4135268111..882d74b4d7 100644
--- a/bsp/ls1bdev/rtconfig.h
+++ b/bsp/ls1bdev/rtconfig.h
@@ -1,223 +1,163 @@
-#ifndef __RTTHREAD_CFG_H__
-#define __RTTHREAD_CFG_H__
+#ifndef RT_CONFIG_H__
+#define RT_CONFIG_H__
 
-// <RDTConfigurator URL="http://www.rt-thread.com/eclipse">
+/* Automatically generated file; DO NOT EDIT. */
+/* RT-Thread Configuration */
 
-// <integer name="RT_NAME_MAX" description="Maximal size of kernel object name length" default="6" />
-#define RT_NAME_MAX	10
-// <integer name="RT_ALIGN_SIZE" description="Alignment size for CPU architecture data access" default="4" />
-#define RT_ALIGN_SIZE	4
-// <integer name="RT_THREAD_PRIORITY_MAX" description="Maximal level of thread priority" default="32">
-// <item description="8">8</item>
-// <item description="32">32</item>
-// <item description="256">256</item>
-// </integer>
-#define RT_THREAD_PRIORITY_MAX	32
-// <integer name="RT_TICK_PER_SECOND" description="OS tick per second" default="100" />
-#define RT_TICK_PER_SECOND	100
-// <section name="RT_DEBUG" description="Kernel Debug Configuration" default="true" >
-#define RT_DEBUG
-#define RT_DEBUG_COLOR
-// <bool name="RT_THREAD_DEBUG" description="Thread debug enable" default="false" />
-// #define RT_THREAD_DEBUG
-// <bool name="RT_USING_OVERFLOW_CHECK" description="Thread stack over flow detect" default="true" />
-#define RT_USING_OVERFLOW_CHECK
-// <bool name="RT_USING_INTERRUPT_INFO" description="Show more interrupt description" default="true" />
-#define RT_USING_INTERRUPT_INFO
-// </section>
+/* RT-Thread Kernel */
 
-// <bool name="RT_USING_HOOK" description="Using hook functions" default="true" />
+#define RT_NAME_MAX 8
+#define RT_ALIGN_SIZE 4
+#define RT_THREAD_PRIORITY_32
+#define RT_THREAD_PRIORITY_MAX 32
+#define RT_TICK_PER_SECOND 100
+#define RT_USING_OVERFLOW_CHECK
 #define RT_USING_HOOK
-// <section name="RT_USING_TIMER_SOFT" description="Using software timer which will start a thread to handle soft-timer" default="true" >
-// #define RT_USING_TIMER_SOFT
-// <integer name="RT_TIMER_THREAD_PRIO" description="The priority level of timer thread" default="4" />
-#define RT_TIMER_THREAD_PRIO	4
-// <integer name="RT_TIMER_THREAD_STACK_SIZE" description="The stack size of timer thread" default="512" />
-#define RT_TIMER_THREAD_STACK_SIZE	512
-// <integer name="RT_TIMER_TICK_PER_SECOND" description="The soft-timer tick per second" default="10" />
-#define RT_TIMER_TICK_PER_SECOND	10
-// </section>
+#define RT_USING_IDLE_HOOK
+#define RT_IDLE_HOOK_LIST_SIZE 4
+#define IDLE_THREAD_STACK_SIZE 256
+#define RT_USING_TIMER_SOFT
+#define RT_TIMER_THREAD_PRIO 4
+#define RT_TIMER_THREAD_STACK_SIZE 512
+#define RT_DEBUG
+
+/* Inter-Thread communication */
 
-// <section name="IPC" description="Inter-Thread communication" default="always" >
-// <bool name="RT_USING_SEMAPHORE" description="Using semaphore in the system" default="true" />
 #define RT_USING_SEMAPHORE
-// <bool name="RT_USING_MUTEX" description="Using mutex in the system" default="true" />
 #define RT_USING_MUTEX
-// <bool name="RT_USING_EVENT" description="Using event group in the system" default="true" />
 #define RT_USING_EVENT
-// <bool name="RT_USING_MAILBOX" description="Using mailbox in the system" default="true" />
 #define RT_USING_MAILBOX
-// <bool name="RT_USING_MESSAGEQUEUE" description="Using message queue in the system" default="true" />
 #define RT_USING_MESSAGEQUEUE
-// </section>
 
-// <section name="MM" description="Memory Management" default="always" >
-// <bool name="RT_USING_MEMPOOL" description="Using Memory Pool Management in the system" default="true" />
+/* Memory Management */
+
 #define RT_USING_MEMPOOL
-// <bool name="RT_USING_MEMHEAP" description="Using Memory Heap Object in the system" default="true" />
-#define RT_USING_MEMHEAP
-// <bool name="RT_USING_HEAP" description="Using Dynamic Heap Management in the system" default="true" />
-#define RT_USING_HEAP
-// <bool name="RT_USING_SMALL_MEM" description="Optimizing for small memory" default="false" />
 #define RT_USING_SMALL_MEM
-// <bool name="RT_USING_SLAB" description="Using SLAB memory management for large memory" default="false" />
-// #define RT_USING_SLAB
-// </section>
+#define RT_USING_HEAP
 
-// <section name="RT_USING_DEVICE" description="Using Device Driver Framework" default="true" >
-#define RT_USING_DEVICE
-// <bool name="RT_USING_UART" description="Using UART" default="true" />
-#define RT_USING_UART
-// <bool name="RT_USING_UART0" description="Using UART0" default="true" />
-#define RT_USING_UART0
-// <integer name="RT_UART_RX_BUFFER_SIZE" description="The buffer size for UART reception" default="64" />
-#define RT_UART_RX_BUFFER_SIZE	64
-// </section>
+/* Kernel Device Object */
 
-// <section name="RT_USING_CONSOLE" description="Using console" default="true" >
+#define RT_USING_DEVICE
 #define RT_USING_CONSOLE
-// <integer name="RT_CONSOLEBUF_SIZE" description="The buffer size for console output" default="128" />
-#define RT_CONSOLEBUF_SIZE	128
-// <string name="RT_CONSOLE_DEVICE_NAME" description="The device name for console" default="uart" />
-#define RT_CONSOLE_DEVICE_NAME	"uart0"
-// </section>
+#define RT_CONSOLEBUF_SIZE 128
+#define RT_CONSOLE_DEVICE_NAME "uart"
+#define RT_VER_NUM 0x40002
+
+/* RT-Thread Components */
 
-// <bool name="RT_USING_COMPONENTS_INIT" description="Using RT-Thread components initialization" default="true" />
 #define RT_USING_COMPONENTS_INIT
-// <section name="RT_USING_FINSH" description="Using finsh as shell, which is a C-Express shell" default="true" >
+#define RT_USING_USER_MAIN
+#define RT_MAIN_THREAD_STACK_SIZE 2048
+#define RT_MAIN_THREAD_PRIORITY 10
+
+/* C++ features */
+
+
+/* Command shell */
+
 #define RT_USING_FINSH
-// <bool name="FINSH_USING_SYMTAB" description="Using symbol table in finsh shell" default="true" />
+#define FINSH_THREAD_NAME "tshell"
+#define FINSH_USING_HISTORY
+#define FINSH_HISTORY_LINES 5
 #define FINSH_USING_SYMTAB
-// <bool name="FINSH_USING_DESCRIPTION" description="Keeping description in symbol table" default="true" />
 #define FINSH_USING_DESCRIPTION
-// <integer name="FINSH_THREAD_STACK_SIZE" description="The stack size for finsh thread" default="4096" />
-#define FINSH_THREAD_STACK_SIZE	4096
-// </section>
+#define FINSH_THREAD_PRIORITY 20
+#define FINSH_THREAD_STACK_SIZE 4096
+#define FINSH_CMD_SIZE 80
+#define FINSH_USING_MSH
+#define FINSH_USING_MSH_DEFAULT
+#define FINSH_ARG_MAX 10
+
+/* Device virtual file system */
+
+#define RT_USING_DFS
+#define DFS_USING_WORKDIR
+#define DFS_FILESYSTEMS_MAX 2
+#define DFS_FILESYSTEM_TYPES_MAX 2
+#define DFS_FD_MAX 16
+#define RT_USING_DFS_DEVFS
+
+/* Device Drivers */
+
+#define RT_USING_DEVICE_IPC
+#define RT_PIPE_BUFSZ 512
+#define RT_USING_SERIAL
+#define RT_SERIAL_USING_DMA
+#define RT_SERIAL_RB_BUFSZ 64
+#define RT_USING_PIN
+
+/* Using USB */
+
+
+/* POSIX layer and C standard library */
 
-// <section name="RT_USING_LIBC" description="C Runtime library setting" default="true" >
 #define RT_USING_LIBC
-// <bool name="RT_USING_PTHREADS" description="Using POSIX threads library" default="true" />
-#define RT_USING_PTHREADS
-// </section>
+#define RT_USING_POSIX
+
+/* Network */
+
+/* Socket abstraction layer */
+
+
+/* Network interface device */
+
+
+/* light weight TCP/IP stack */
+
 
-// <section name="RT_USING_DFS" description="Device file system" default="true" >
-// #define RT_USING_DFS
-// <bool name="DFS_USING_WORKDIR" description="Using working directory" default="true" />
-// #define DFS_USING_WORKDIR
-// <integer name="DFS_FILESYSTEMS_MAX" description="The maximal number of mounted file system" default="4" />
-#define DFS_FILESYSTEMS_MAX	2
-// <integer name="DFS_FD_MAX" description="The maximal number of opened files" default="4" />
-#define DFS_FD_MAX	4
-// <bool name="RT_USING_DFS_ELMFAT" description="Using ELM FatFs" default="true" />
-#define RT_USING_DFS_ELMFAT
-// <integer name="RT_DFS_ELM_USE_LFN" description="Support long file name" default="0">
-// <item description="LFN1">1</item>
-// <item description="LFN1">2</item>
-// </integer>
-#define RT_DFS_ELM_USE_LFN	1
-// <integer name="RT_DFS_ELM_MAX_LFN" description="Maximal size of file name length" default="255" />
-#define RT_DFS_ELM_MAX_LFN	64
-// <bool name="RT_USING_DFS_YAFFS2" description="Using YAFFS2" default="false" />
-// #define RT_USING_DFS_YAFFS2
-// <bool name="RT_USING_DFS_UFFS" description="Using UFFS" default="false" />
-// #define RT_USING_DFS_UFFS
-// <bool name="RT_USING_DFS_DEVFS" description="Using devfs for device objects" default="true" />
-// #define RT_USING_DFS_DEVFS
-// <bool name="RT_USING_DFS_NFS" description="Using NFS v3 client file system" default="false" />
-// #define RT_USING_DFS_NFS
-// <string name="RT_NFS_HOST_EXPORT" description="NFSv3 host export" default="192.168.1.5:/" />
-#define RT_NFS_HOST_EXPORT	"192.168.1.5:/"
-// </section>
+/* AT commands */
 
-// <section name="RT_USING_LWIP" description="lwip, a lightweight TCP/IP protocol stack" default="true" >
-// #define RT_USING_LWIP
-// <bool name="RT_LWIP_ICMP" description="Enable ICMP protocol" default="true" />
-#define RT_LWIP_ICMP
-// <bool name="RT_LWIP_IGMP" description="Enable IGMP protocol" default="false" />
-// #define RT_LWIP_IGMP
-// <bool name="RT_LWIP_UDP" description="Enable UDP protocol" default="true" />
-#define RT_LWIP_UDP
-// <bool name="RT_LWIP_TCP" description="Enable TCP protocol" default="true" />
-#define RT_LWIP_TCP
-// <bool name="RT_LWIP_DNS" description="Enable DNS protocol" default="true" />
-#define RT_LWIP_DNS
-// <integer name="RT_LWIP_PBUF_NUM" description="Maximal number of buffers in the pbuf pool" default="4" />
-#define RT_LWIP_PBUF_NUM	4
-// <integer name="RT_LWIP_TCP_PCB_NUM" description="Maximal number of simultaneously active TCP connections" default="5" />
-#define RT_LWIP_TCP_PCB_NUM	3
-// <integer name="RT_LWIP_TCP_SND_BUF" description="TCP sender buffer size" default="8192" />
-#define RT_LWIP_TCP_SND_BUF	2048
-// <integer name="RT_LWIP_TCP_WND" description="TCP receive window" default="8192" />
-#define RT_LWIP_TCP_WND	2048
-// <bool name="RT_LWIP_SNMP" description="Enable SNMP protocol" default="false" />
-// #define RT_LWIP_SNMP
-// <bool name="RT_LWIP_DHCP" description="Enable DHCP client to get IP address" default="false" />
-// #define RT_LWIP_DHCP
-// <integer name="RT_LWIP_TCP_SEG_NUM" description="the number of simultaneously queued TCP" default="4" />
-#define RT_LWIP_TCP_SEG_NUM	4
-// <integer name="RT_LWIP_TCPTHREAD_PRIORITY" description="the thread priority of TCP thread" default="128" />
-#define RT_LWIP_TCPTHREAD_PRIORITY	12
-// <integer name="RT_LWIP_TCPTHREAD_MBOX_SIZE" description="the mail box size of TCP thread to wait for" default="32" />
-#define RT_LWIP_TCPTHREAD_MBOX_SIZE	8
-// <integer name="RT_LWIP_TCPTHREAD_STACKSIZE" description="the thread stack size of TCP thread" default="4096" />
-#define RT_LWIP_TCPTHREAD_STACKSIZE	4096
-// <integer name="RT_LWIP_ETHTHREAD_PRIORITY" description="the thread priority of ethnetif thread" default="144" />
-#define RT_LWIP_ETHTHREAD_PRIORITY	14
-// <integer name="RT_LWIP_ETHTHREAD_MBOX_SIZE" description="the mail box size of ethnetif thread to wait for" default="8" />
-#define RT_LWIP_ETHTHREAD_MBOX_SIZE	8
-// <integer name="RT_LWIP_ETHTHREAD_STACKSIZE" description="the stack size of ethnetif thread" default="512" />
-#define RT_LWIP_ETHTHREAD_STACKSIZE	512
-// <ipaddr name="RT_LWIP_IPADDR" description="IP address of device" default="192.168.1.30" />
-#define RT_LWIP_IPADDR0 192
-#define RT_LWIP_IPADDR1 168
-#define RT_LWIP_IPADDR2 1
-#define RT_LWIP_IPADDR3 30
-// <ipaddr name="RT_LWIP_GWADDR" description="Gateway address of device" default="192.168.1.1" />
-#define RT_LWIP_GWADDR0 192
-#define RT_LWIP_GWADDR1 168
-#define RT_LWIP_GWADDR2 1
-#define RT_LWIP_GWADDR3 1
-// <ipaddr name="RT_LWIP_MSKADDR" description="Mask address of device" default="255.255.255.0" />
-#define RT_LWIP_MSKADDR0 255
-#define RT_LWIP_MSKADDR1 255
-#define RT_LWIP_MSKADDR2 255
-#define RT_LWIP_MSKADDR3 0
-// </section>
 
-// <section name="RT_USING_MODULE" description="Application module" default="true" >
-// #define RT_USING_MODULE
-// </section>
+/* VBUS(Virtual Software BUS) */
 
-// <section name="RT_USING_RTGUI" description="RTGUI, a graphic user interface" default="true" >
-// #define RT_USING_RTGUI
-// <integer name="RTGUI_NAME_MAX" description="Maximal size of RTGUI object name length" default="16" />
-#define RTGUI_NAME_MAX	16
-// <bool name="RTGUI_USING_FONT16" description="Support 16 weight font" default="true" />
-#define RTGUI_USING_FONT16
-// <bool name="RTGUI_USING_FONT12" description="Support 12 weight font" default="true" />
-#define RTGUI_USING_FONT12
-// <bool name="RTGUI_USING_FONTHZ" description="Support Chinese font" default="true" />
-#define RTGUI_USING_FONTHZ
-// <bool name="RTGUI_USING_DFS_FILERW" description="Using DFS as file interface " default="true" />
-#define RTGUI_USING_DFS_FILERW
-// <bool name="RTGUI_USING_HZ_FILE" description="Using font file as Chinese font" default="false" />
-// #define RTGUI_USING_HZ_FILE
-// <bool name="RTGUI_USING_HZ_BMP" description="Using Chinese bitmap font" default="true" />
-#define RTGUI_USING_HZ_BMP
-// <bool name="RTGUI_USING_SMALL_SIZE" description="Using small size in RTGUI" default="false" />
-#define RTGUI_USING_SMALL_SIZE
-// <bool name="RTGUI_USING_MOUSE_CURSOR" description="Using mouse cursor in RTGUI" default="false" />
-// #define RTGUI_USING_MOUSE_CURSOR
-// <bool name="RTGUI_IMAGE_XPM" description="Using xpm image in RTGUI" default="true" />
-#define RTGUI_IMAGE_XPM
-// <bool name="RTGUI_IMAGE_JPEG" description="Using jpeg image in RTGUI" default="true" />
-// #define RTGUI_IMAGE_JPEG
-// <bool name="RTGUI_IMAGE_PNG" description="Using png image in RTGUI" default="true" />
-// #define RTGUI_IMAGE_PNG
-// <bool name="RTGUI_IMAGE_BMP" description="Using bmp image in RTGUI" default="true" />
-#define RTGUI_IMAGE_BMP
-// </section>
 
-// </RDTConfigurator>
+/* Utilities */
+
+
+/* RT-Thread MIPS CPU */
+
+
+/* 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 */
+
+
+/* peripheral libraries and drivers */
+
+
+/* miscellaneous packages */
+
+
+/* samples: kernel and components samples */
+
+#define SOC_LS1B
+#define RT_USING_UART0
+#define RT_UART_RX_BUFFER_SIZE 64
 
 #endif
diff --git a/bsp/ls1bdev/rtconfig.py b/bsp/ls1bdev/rtconfig.py
index 4dcbf0bd75..13605429c1 100644
--- a/bsp/ls1bdev/rtconfig.py
+++ b/bsp/ls1bdev/rtconfig.py
@@ -2,7 +2,7 @@ import os
 
 # CPU options
 ARCH='mips'
-CPU ='loongson_1b'
+CPU ='gs232'
 
 # toolchains options
 CROSS_TOOL  = 'gcc'
@@ -12,7 +12,8 @@ if os.getenv('RTT_CC'):
 
 if  CROSS_TOOL == 'gcc':
 	PLATFORM    = 'gcc'
-	EXEC_PATH   = r'C:\Program Files\CodeSourcery\Sourcery G++ Lite For MIPS ELF\bin'
+	EXEC_PATH   = "/opt/mips-2016.05/bin"
+#	EXEC_PATH   = r'D:\mgc\embedded\codebench\bin'
 else:
     print('================ERROR============================')
     print('Not support %s yet!' % CROSS_TOOL)
@@ -37,7 +38,7 @@ READELF = PREFIX + 'readelf'
 
 DEVICE = ' -mips32'
 CFLAGS = DEVICE + ' -EL -G0 -mno-abicalls -fno-pic -fno-builtin -fno-exceptions -ffunction-sections -fomit-frame-pointer'
-AFLAGS = ' -c' + DEVICE + ' -EL -fno-pic -fno-builtin -mno-abicalls -x assembler-with-cpp -DSYSTEM_STACK=0x80003fe8'
+AFLAGS = ' -c' + DEVICE + ' -EL -fno-pic -fno-builtin -mno-abicalls -x assembler-with-cpp'
 LFLAGS = DEVICE + ' -nostartfiles -EL -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,Reset_Handler -T ls1b_ram.lds'
 
 CPATH = ''
diff --git a/bsp/ls1cdev/Kconfig b/bsp/ls1cdev/Kconfig
index 41f951c848..6cd2409db4 100644
--- a/bsp/ls1cdev/Kconfig
+++ b/bsp/ls1cdev/Kconfig
@@ -9,108 +9,118 @@ config RTT_DIR
     string
     option env="RTT_ROOT"
     default "../.."
-    
+
 config PKGS_DIR
     string
     option env="PKGS_ROOT"
     default "packages"
 
 source "$RTT_DIR/Kconfig"
+source "$RTT_DIR/libcpu/mips/common/Kconfig"
 source "$PKGS_DIR/Kconfig"
 
 config SOC_1C300
-    bool 
+    bool
     select RT_USING_COMPONENTS_INIT
     select RT_USING_USER_MAIN
     default y
 
+choice
+    prompt "Board Type"
+        config RT_LS1C_OPENLOONGSON
+            bool "OpenLoongson Board"
+        config RT_LS1C_BAICAIBOARD
+            bool "Baicai Board"
+endchoice
+
 config RT_USING_SELF_BOOT
     bool "Enable RT-Thread run without bootloader"
     default n
-	
+
+if RT_USING_SELF_BOOT
+    config RT_SELF_BOOT_DEBUG
+    bool "Debug self boot code"
+    default n
+endif
+
 if RT_USING_SERIAL
 config RT_USING_UART2
     bool "Using RT_USING_UART2"
-    default y      
+    default y
 config RT_USING_UART1
     bool "Using RT_USING_UART1"
-    default y      
+    default y
 config RT_USING_UART3
     bool "Using RT_USING_UART3"
-    default n      
+    default n
 
 config RT_UART_RX_BUFFER_SIZE
-    int "The rx buffer size"        
+    int "The rx buffer size"
     default 64 if RT_USING_SERIAL
-    default 64 
-endif  
+    default 64
+endif
 
 config RT_USING_GMAC_INT_MODE
     bool "Using RT_USING_GMAC_INT_MODE"
     default y
-	
-config RT_USING_FPU
-    bool "Using RT_USING_FPU"
-    default y
-	
+
 config RT_USING_SPI0
     bool "Enable SPI0"
 	select RT_USING_SPI
-    default y      
+    default y
 
 config RT_USING_SPI1
     bool "Enable SPI1"
 	select RT_USING_SPI
-    default y      
-	
+    default y
+
 if RT_USING_I2C
 config RT_USING_I2C1
     bool "Enable I2C1"
     default y
-	
+
 config RT_USING_I2C2
-    bool "Enable I2C2"  
-    default y 
+    bool "Enable I2C2"
+    default y
 endif
 
-	
+
 config USING_BXCAN0
     bool "Enable CAN0"
 	select RT_USING_CAN
-    default y      
-  
+    default y
+
 config USING_BXCAN1
     bool "Enable CAN1"
 	select RT_USING_CAN
-    default y      
+    default y
 
 if RT_USING_CAN
 config RT_CAN_USING_HDR
     bool "Using RT_CAN_USING_HDR"
 	select RT_USING_CAN
-    default y  
-endif    
+    default y
+endif
 
 choice
     prompt "Touch format"
     default NO_TOUCH
 
     config NO_TOUCH
-        bool "with no touch"	
-		
+        bool "with no touch"
+
 if RT_USING_RTGUI
     config XPT2046_USING_TOUCH
         bool "with XPT2046 touch"
-endif    
+endif
 
     config TINA_USING_TOUCH
-        bool "with TINA touch"		
+        bool "with TINA touch"
 endchoice
 
 if RT_USING_RTC
 config RT_RTC_NAME
     string "RT_RTC_NAME"
-    default "RTC" 
-endif    
+    default "RTC"
+endif
 
-    
\ No newline at end of file
diff --git a/bsp/ls1cdev/SConstruct b/bsp/ls1cdev/SConstruct
index 7006f4f2de..4ea8c066ec 100644
--- a/bsp/ls1cdev/SConstruct
+++ b/bsp/ls1cdev/SConstruct
@@ -16,10 +16,10 @@ rtconfig.AFLAGS += ' -I' + str(Dir('#'))
 
 DefaultEnvironment(tools=[])
 env = Environment(tools = ['mingw'],
-	AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
-	CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
-	AR = rtconfig.AR, ARFLAGS = '-rc',
-	LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
 env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
 
 Export('RTT_ROOT')
@@ -29,9 +29,9 @@ Export('rtconfig')
 objs = PrepareBuilding(env, RTT_ROOT)
 
 if GetDepend('RT_USING_SELF_BOOT'):
-    rtconfig.LFLAGS += " -Ttext 0x80010000"
+    rtconfig.LFLAGS += " -Ttext 0x80000000"
 else:
-	rtconfig.LFLAGS += " -Ttext 0x80200000"    
+    rtconfig.LFLAGS += " -Ttext 0x80200000"
 env.Replace(LINKFLAGS = rtconfig.LFLAGS)
 
 if GetDepend('RT_USING_FPU'):
@@ -39,9 +39,9 @@ if GetDepend('RT_USING_FPU'):
     env['ASFLAGS']   = env['ASFLAGS'].replace('-msoft-float', '-mhard-float')
     env['CXXFLAGS']  = env['CXXFLAGS'].replace('-msoft-float', '-mhard-float')
     env['LINKFLAGS'] = env['LINKFLAGS'].replace('-msoft-float', '-mhard-float')
-    
+
 if GetDepend('RT_USING_RTGUI'):
     objs = objs + SConscript(RTT_ROOT + '/examples/gui/SConscript', variant_dir='build/examples/gui', duplicate=0)
-    
+
 # make a building
 DoBuilding(TARGET, objs)
diff --git a/bsp/ls1cdev/drivers/SConscript b/bsp/ls1cdev/drivers/SConscript
index 3e76809efb..33310b6d7e 100644
--- a/bsp/ls1cdev/drivers/SConscript
+++ b/bsp/ls1cdev/drivers/SConscript
@@ -1,7 +1,7 @@
 from building import *
 
 cwd = GetCurrentDir()
-src = Glob('*.c')
+src = Glob('*.c') + Glob('*.cpp') + Glob('*_gcc.S')
 
 CPPPATH = [cwd]
 
diff --git a/bsp/ls1cdev/drivers/board.c b/bsp/ls1cdev/drivers/board.c
index b4b8403b49..b000daafc5 100644
--- a/bsp/ls1cdev/drivers/board.c
+++ b/bsp/ls1cdev/drivers/board.c
@@ -8,74 +8,20 @@
  * 2010-06-25     Bernard      first version
  * 2011-08-08     lgnq            modified for Loongson LS1B
  * 2015-07-06     chinesebear  modified for Loongson LS1C
+ * 2019-12-04     Jiaxun Yang  Adapt new generic MIPS code
  */
 
 #include <rtthread.h>
 #include <rthw.h>
+#include <mips.h>
 
 #include "board.h"
 #include "drv_uart.h"
 #include "ls1c.h"
 
-#define A_K0BASE		0x80000000
-
 extern unsigned char __bss_end;
 
-
-extern void tlb_refill_exception(void);
-extern void general_exception(void);
-extern void irq_exception(void);
-extern void rt_hw_cache_init(void);
-extern void invalidate_writeback_dcache_all(void);
-extern void invalidate_icache_all(void);
-
-/**
- * This is the timer interrupt service routine.
- */
-void rt_hw_timer_handler(void)
-{
-	unsigned int count;
-
-	count = read_c0_compare();
-	write_c0_compare(count);
-	write_c0_count(0);
-
-	/* increase a OS tick */
-	rt_tick_increase();
-}
-
-/**
- * This function will initial OS timer
- */
-void rt_hw_timer_init(void)
-{
-	write_c0_compare(CPU_HZ/2/RT_TICK_PER_SECOND);
-	write_c0_count(0);
-}
-
-
-/**
- * init hardware FPU
- */
-void rt_hw_fpu_init(void)
-{
-    rt_uint32_t c0_status = 0;
-    rt_uint32_t c1_status = 0;
-
-    // 使能协处理器1--FPU
-    c0_status = read_c0_status();
-    c0_status |= (ST0_CU1 | ST0_FR);
-    write_c0_status(c0_status);
-
-    // 配置FPU
-    c1_status = read_c1_status();
-    c1_status |= (FPU_CSR_FS | FPU_CSR_FO | FPU_CSR_FN);    // set FS, FO, FN
-    c1_status &= ~(FPU_CSR_ALL_E);                          // disable exception
-    c1_status = (c1_status & (~FPU_CSR_RM)) | FPU_CSR_RN;   // set RN
-    write_c1_status(c1_status);
-
-    return ;
-}
+#define RT_HW_HEAP_END    (0x80000000 + MEM_SIZE)
 
 
 /**
@@ -83,35 +29,24 @@ void rt_hw_fpu_init(void)
  */
 void rt_hw_board_init(void)
 {
-	/* init cache */
-	rt_hw_cache_init();
-	
-	/* init hardware interrupt */
-	rt_hw_interrupt_init();
-
-	/* clear bev */
-	write_c0_status(read_c0_status()&(~(1<<22)));
-
-	/* copy vector */
-	rt_memcpy((void *)A_K0BASE, tlb_refill_exception, 0x80);
-	rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x80);
-	rt_memcpy((void *)(A_K0BASE + 0x200), irq_exception, 0x80);
-
-	invalidate_writeback_dcache_all();
-	invalidate_icache_all();
-	
+    /* init hardware interrupt */
+    rt_hw_exception_init();
+    
+    /* init hardware interrupt */
+    rt_hw_interrupt_init();
+    
 #ifdef RT_USING_HEAP
-	rt_system_heap_init((void*)&__bss_end, (void*)RT_HW_HEAP_END);
+    rt_system_heap_init((void*)&__bss_end, (void*)RT_HW_HEAP_END);
 #endif
 
 #ifdef RT_USING_SERIAL
-	/* init hardware UART device */
-	rt_hw_uart_init();
+    /* init hardware UART device */
+    rt_hw_uart_init();
 #endif
 
 #ifdef RT_USING_CONSOLE
-	/* set console device */
-	rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+    /* set console device */
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
 #endif
     /* init operating system timer */
     rt_hw_timer_init();
diff --git a/bsp/ls1cdev/drivers/board.h b/bsp/ls1cdev/drivers/board.h
index 35c53f2a06..089384e348 100644
--- a/bsp/ls1cdev/drivers/board.h
+++ b/bsp/ls1cdev/drivers/board.h
@@ -8,15 +8,55 @@
  * 2010-06-25     Bernard        first version
  * 2011-08-08     lgnq             modified for Loongson LS1B
  * 2015-07-06     chinesebear   modified for Loongson LS1C
+ * 2019-12-04     Jiaxun Yang   Add board config defines
  */
 
 #ifndef __BOARD_H__
 #define __BOARD_H__
+#include <rtconfig.h>
 
+#ifndef __ASSEMBLY__
 void rt_hw_board_init(void);
+#endif
+
+/*
+* SDRAM config
+*
+* Take IS42S16400 SDRAM chip as a example
+* The specfication is
+* Size 8MB
+* WIDTH: 16 bits
+* COL WIDTH: 8 bits, so we should take the 8 power of 2, it's 256
+* ROW WIDTH: 12 bits, so we take the 12 power of 2, it's 4K
+*
+* Please reference macro SD_PARA0 and SDRAM registers intruduction
+* in user's manual to edit the SDRAM config.
+*/
+
+#if defined(RT_LS1C_BAICAIBOARD)
+/* 8MByte IS42S16400 appeared in bacai_board V1.x V2.x */
+#define MEM_SIZE        (0x800000)
+#define SDRAM_WIDTH     (WIDTH_16)
+#define SDRAM_COL       (COL_256)
+#define SDRAM_ROW       (ROW_4K)
+#elif defined(RT_LS1C_OPENLOONGSON)
+/* 32MByte appeared in SmartLoong board */
+#define MEM_SIZE        (0x2000000)
+#define SDRAM_WIDTH     (WIDTH_16)
+#define SDRAM_COL       (COL_512)
+#define SDRAM_ROW       (ROW_8K)
+#else
+#error Unknown Board
+#endif
+
+/* Early Debug config */
+#define EARLY_DEBUG /* UART2 serial print debug in early stage */
+#define EARLY_DEBUG_BAUD  (115200)
 
-/* 32M SDRAM */
-#define RT_HW_HEAP_END    (0x80000000 + 32 * 1024 * 1024)
+/* Clock config */
 #define CPU_HZ            (252 * 1000000)
+#define PLL_MULT          (0x54)  /* When external clock is 24Mhz PLL=504Mhz */
+#define SDRAM_DIV         (0)     /* SDRAM is CPU divided by 2*/
+#define CPU_DIV           (2)     /* CPU clock is PLL divided by 2 */
 
 #endif
diff --git a/bsp/ls1cdev/drivers/drv_uart.h b/bsp/ls1cdev/drivers/drv_uart.h
index 4e3fb63194..dcc90ea3f9 100644
--- a/bsp/ls1cdev/drivers/drv_uart.h
+++ b/bsp/ls1cdev/drivers/drv_uart.h
@@ -12,6 +12,7 @@
 #define __DRV_UART_H__
 
 #include "ls1c.h"
+#include <rthw.h>
 
 #define DEV_CLK 252000000 // 252MHz
 #define UART_BAUDRATE 115200
@@ -31,43 +32,43 @@
 #define UART11_BASE         0xBFE4Cb00
 
 /* UART registers */
-#define UART_DAT(base)      __REG8(base + 0x00)
-#define UART_IER(base)      __REG8(base + 0x01)
-#define UART_IIR(base)      __REG8(base + 0x02)
-#define UART_FCR(base)      __REG8(base + 0x02)
-#define UART_LCR(base)      __REG8(base + 0x03)
-#define UART_MCR(base)      __REG8(base + 0x04)
-#define UART_LSR(base)      __REG8(base + 0x05)
-#define UART_MSR(base)      __REG8(base + 0x06)
+#define UART_DAT(base)      HWREG8(base + 0x00)
+#define UART_IER(base)      HWREG8(base + 0x01)
+#define UART_IIR(base)      HWREG8(base + 0x02)
+#define UART_FCR(base)      HWREG8(base + 0x02)
+#define UART_LCR(base)      HWREG8(base + 0x03)
+#define UART_MCR(base)      HWREG8(base + 0x04)
+#define UART_LSR(base)      HWREG8(base + 0x05)
+#define UART_MSR(base)      HWREG8(base + 0x06)
 
-#define UART_LSB(base)      __REG8(base + 0x00)
-#define UART_MSB(base)      __REG8(base + 0x01)
+#define UART_LSB(base)      HWREG8(base + 0x00)
+#define UART_MSB(base)      HWREG8(base + 0x01)
 
 /* UART0 registers */
-#define UART0_DAT           __REG8(UART0_BASE + 0x00)
-#define UART0_IER           __REG8(UART0_BASE + 0x01)
-#define UART0_IIR           __REG8(UART0_BASE + 0x02)
-#define UART0_FCR           __REG8(UART0_BASE + 0x02)
-#define UART0_LCR           __REG8(UART0_BASE + 0x03)
-#define UART0_MCR           __REG8(UART0_BASE + 0x04)
-#define UART0_LSR           __REG8(UART0_BASE + 0x05)
-#define UART0_MSR           __REG8(UART0_BASE + 0x06)
+#define UART0_DAT           HWREG8(UART0_BASE + 0x00)
+#define UART0_IER           HWREG8(UART0_BASE + 0x01)
+#define UART0_IIR           HWREG8(UART0_BASE + 0x02)
+#define UART0_FCR           HWREG8(UART0_BASE + 0x02)
+#define UART0_LCR           HWREG8(UART0_BASE + 0x03)
+#define UART0_MCR           HWREG8(UART0_BASE + 0x04)
+#define UART0_LSR           HWREG8(UART0_BASE + 0x05)
+#define UART0_MSR           HWREG8(UART0_BASE + 0x06)
 
-#define UART0_LSB           __REG8(UART0_BASE + 0x00)
-#define UART0_MSB           __REG8(UART0_BASE + 0x01)
+#define UART0_LSB           HWREG8(UART0_BASE + 0x00)
+#define UART0_MSB           HWREG8(UART0_BASE + 0x01)
 
 /* UART1 registers */
-#define UART1_DAT           __REG8(UART1_BASE + 0x00)
-#define UART1_IER           __REG8(UART1_BASE + 0x01)
-#define UART1_IIR           __REG8(UART1_BASE + 0x02)
-#define UART1_FCR           __REG8(UART1_BASE + 0x02)
-#define UART1_LCR           __REG8(UART1_BASE + 0x03)
-#define UART1_MCR           __REG8(UART1_BASE + 0x04)
-#define UART1_LSR           __REG8(UART1_BASE + 0x05)
-#define UART1_MSR           __REG8(UART1_BASE + 0x06)
+#define UART1_DAT           HWREG8(UART1_BASE + 0x00)
+#define UART1_IER           HWREG8(UART1_BASE + 0x01)
+#define UART1_IIR           HWREG8(UART1_BASE + 0x02)
+#define UART1_FCR           HWREG8(UART1_BASE + 0x02)
+#define UART1_LCR           HWREG8(UART1_BASE + 0x03)
+#define UART1_MCR           HWREG8(UART1_BASE + 0x04)
+#define UART1_LSR           HWREG8(UART1_BASE + 0x05)
+#define UART1_MSR           HWREG8(UART1_BASE + 0x06)
 
-#define UART1_LSB           __REG8(UART1_BASE + 0x00)
-#define UART1_MSB           __REG8(UART1_BASE + 0x01)
+#define UART1_LSB           HWREG8(UART1_BASE + 0x00)
+#define UART1_MSB           HWREG8(UART1_BASE + 0x01)
 
 /* UART interrupt enable register value */
 #define UARTIER_IME     (1 << 3)
diff --git a/bsp/ls1cdev/drivers/net/synopGMAC_plat.h b/bsp/ls1cdev/drivers/net/synopGMAC_plat.h
index cec6473746..173015a53f 100644
--- a/bsp/ls1cdev/drivers/net/synopGMAC_plat.h
+++ b/bsp/ls1cdev/drivers/net/synopGMAC_plat.h
@@ -39,14 +39,6 @@
 typedef int bool;
 //typedef unsigned long dma_addr_t;
 
-//sw
-/* write/read MMIO register */
-#define writeb(val, addr) (*(volatile u8*)(addr) = (val))
-#define writew(val, addr) (*(volatile u16*)(addr) = (val))
-#define writel(val, addr) (*(volatile u32*)(addr) = (val))
-#define readb(addr) (*(volatile u8*)(addr))
-#define readw(addr) (*(volatile u16*)(addr))
-#define readl(addr) (*(volatile u32*)(addr))
 
 
 #define KUSEG_ADDR              0x0
diff --git a/bsp/ls1cdev/drivers/selfboot.h b/bsp/ls1cdev/drivers/selfboot.h
new file mode 100644
index 0000000000..def9e38229
--- /dev/null
+++ b/bsp/ls1cdev/drivers/selfboot.h
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2006-2019, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-12-04     Jiaxun Yang  Initial version
+ */
+
+#ifndef __RT_LS1C_SELFBOOT_H
+#define __RT_LS1C_SELFBOOT_H
+
+/* SDRAM PARAM macro */
+#define	SD_FREQ	(((APB_CLK / 4) * (PLL_MULT / CPU_DIV)) / SDRAM_PARAM_DIV_NUM)
+
+
+/* SDRAM ROW */
+#define	ROW_1K		0x7
+#define	ROW_2K		0x0
+#define	ROW_4K		0x1
+#define	ROW_8K		0x2
+#define	ROW_16K		0x3
+/* SDRAM COL */
+#define	COL_256		0x7
+#define	COL_512		0x0
+#define	COL_1K		0x1
+#define	COL_2K		0x2
+#define	COL_4K		0x3
+/* SDRAM WIDTH */
+#define	WIDTH_8		0x0
+#define	WIDTH_16	0x1
+#define	WIDTH_32	0x2
+
+#define	TRCD		3
+#define	TCL			3
+#define	TRP			3
+#define	TRFC		8
+#define	TRAS		6
+#define	TREF		0x818
+#define	TWR			2
+
+#define	DEF_SEL		0x1
+#define	DEF_SEL_N	0x0
+#define	HANG_UP		0x1
+#define	HANG_UP_N	0x0
+#define	CFG_VALID	0x1
+
+#include "board.h"
+
+#define	SD_PARA0	(0x7f<<25 | \
+					(TRAS << 21) | \
+					(TRFC << 17) | (TRP << 14) | (TCL << 11) | \
+					(TRCD << 8) | (SDRAM_WIDTH << 6) | (SDRAM_COL << 3) | \
+					SDRAM_ROW)
+
+#define	SD_PARA1	((HANG_UP_N << 8) | (DEF_SEL_N << 7) | (TWR << 5) | (TREF >> 7))
+
+#define	SD_PARA1_EN	((CFG_VALID << 9) | (HANG_UP_N << 8) | \
+					(DEF_SEL_N << 7) | (TWR << 5) | (TREF >> 7))
+
+#define LS1C_CBUS_FIRST1      0xBFE011C4
+#define LS1C_UART2_BASE       0xBFE48000
+
+/* UART register offset*/
+#define LS1C_UART_DAT_OFFSET            (0)
+#define LS1C_UART_IER_OFFSET            (1)
+#define LS1C_UART_IIR_OFFSET            (2)
+#define LS1C_UART_FCR_OFFSET            (2)
+#define LS1C_UART_LCR_OFFSET            (3)
+#define LS1C_UART_MCR_OFFSET            (4)
+#define LS1C_UART_LSR_OFFSET            (5)
+#define LS1C_UART_MSR_OFFSET            (6)
+
+#define LS1C_UART_LSB_OFFSET            (0)
+#define LS1C_UART_MSB_OFFSET            (1)
+
+/* interrupt enable register */
+#define	IER_IRxE	0x1
+#define	IER_ITxE	0x2
+#define	IER_ILE	    0x4
+#define	IER_IME	    0x8
+
+/* interrupt identification register */
+#define	IIR_IMASK	0xf	/* mask */
+#define	IIR_RXTOUT	0xc	/* receive timeout */
+#define	IIR_RLS		0x6	/* receive line status */
+#define	IIR_RXRDY	0x4	/* receive ready */
+#define	IIR_TXRDY	0x2	/* transmit ready */
+#define	IIR_NOPEND	0x1	/* nothing */
+#define	IIR_MLSC	0x0	/* modem status */
+#define	IIR_FIFO_MASK	0xc0	/* set if FIFOs are enabled */
+
+/* fifo control register */
+#define	FIFO_ENABLE	0x01	/* enable fifo */
+#define	FIFO_RCV_RST	0x02	/* reset receive fifo */
+#define	FIFO_XMT_RST	0x04	/* reset transmit fifo */
+#define	FIFO_DMA_MODE	0x08	/* enable dma mode */
+#define	FIFO_TRIGGER_1	0x00	/* trigger at 1 char */
+#define	FIFO_TRIGGER_4	0x40	/* trigger at 4 chars */
+#define	FIFO_TRIGGER_8	0x80	/* trigger at 8 chars */
+#define	FIFO_TRIGGER_14	0xc0	/* trigger at 14 chars */
+
+/* character format control register */
+#define	CFCR_DLAB	0x80	/* divisor latch */
+#define	CFCR_SBREAK	0x40	/* send break */
+#define	CFCR_PZERO	0x30	/* zero parity */
+#define	CFCR_PONE	0x20	/* one parity */
+#define	CFCR_PEVEN	0x10	/* even parity */
+#define	CFCR_PODD	0x00	/* odd parity */
+#define	CFCR_PENAB	0x08	/* parity enable */
+#define	CFCR_STOPB	0x04	/* 2 stop bits */
+#define	CFCR_8BITS	0x03	/* 8 data bits */
+#define	CFCR_7BITS	0x02	/* 7 data bits */
+#define	CFCR_6BITS	0x01	/* 6 data bits */
+#define	CFCR_5BITS	0x00	/* 5 data bits */
+
+/* modem control register */
+#define	MCR_LOOPBACK	0x10	/* loopback */
+#define	MCR_IENABLE	0x08	/* output 2 = int enable */
+#define	MCR_DRS		0x04	/* output 1 = xxx */
+#define	MCR_RTS		0x02	/* enable RTS */
+#define	MCR_DTR		0x01	/* enable DTR */
+
+/* line status register */
+#define	LSR_RCV_FIFO	0x80	/* error in receive fifo */
+#define	LSR_TSRE	0x40	/* transmitter empty */
+#define	LSR_TXRDY	0x20	/* transmitter ready */
+#define	LSR_BI		0x10	/* break detected */
+#define	LSR_FE		0x08	/* framing error */
+#define	LSR_PE		0x04	/* parity error */
+#define	LSR_OE		0x02	/* overrun error */
+#define	LSR_RXRDY	0x01	/* receiver ready */
+#define	LSR_RCV_MASK	0x1f
+
+
+/* External clock frequency */
+#define AHB_CLK                 (24000000)
+#define APB_CLK                 (AHB_CLK)
+
+
+/* START_FREQ register bits */
+#define M_PLL_SHIFT             (8)
+#define M_PLL                   (0xff << M_PLL_SHIFT)
+#define FRAC_N_SHIFT            (16)
+#define FRAC_N                  (0xff << FRAC_N_SHIFT)
+#define DIV_SDRAM_SHIFT         (0)
+#define DIV_SDRAM               (0x3  << DIV_SDRAM_SHIFT)
+
+/* CLK_DIV_PARAM register bits */
+#define DIV_PIX_EN              (0x1  << 31)
+#define DIV_PIX                 (0x7f << 24)
+#define DIV_CAM_EN              (0x1  << 23)
+#define DIV_CAM                 (0x7f << 16)
+#define DIV_CPU_EN              (0x1  << 15)
+#define DIV_CPU                 (0x7f << 8)
+#define DIV_PIX_VALID           (0x1  << 5)
+#define DIV_PIX_SEL             (0x1  << 4)
+#define DIV_CAM_VALID           (0x1  << 3)
+#define DIV_CAM_SEL             (0x1  << 2)
+#define DIV_CPU_VALID           (0x1  << 1)
+#define DIV_CPU_SEL             (0x1  << 0)
+
+#define DIV_PIX_SHIFT           (24)
+#define DIV_CAM_SHIFT           (16)
+#define DIV_CPU_SHIFT           (8)
+
+#endif
diff --git a/bsp/ls1cdev/drivers/selfboot_gcc.S b/bsp/ls1cdev/drivers/selfboot_gcc.S
new file mode 100644
index 0000000000..03dfc206d4
--- /dev/null
+++ b/bsp/ls1cdev/drivers/selfboot_gcc.S
@@ -0,0 +1,549 @@
+/*
+ * Copyright (c) 2006-2019, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Origin Authors: Loongson Technology Corporation Limited,
+ * caogos <[email protected]>, Jiaxun Yang <[email protected]>,
+ *
+ * Also thanks to Liu Shiwei <[email protected]> and other Loongson
+ * Community developers.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-12-04     Jiaxun Yang  Initial version
+ */
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_SELF_BOOT
+
+#ifndef __ASSEMBLY__
+#define __ASSEMBLY__
+#endif
+
+#include <mips.h>
+#include "selfboot.h"
+#include "ls1c.h"
+#include "cache.h"
+
+/*
+ *   Register usage:
+ *
+ *	s0	link versus load offset, used to relocate absolute adresses.
+ *	s1	free
+ *	s2	memory size
+ *	s3	free
+ *	s4	free
+ *	s5	dbg
+ *	s6	sdCfg
+ *	s7	rasave
+ *	s8	free
+ */
+
+#define tmpsize		s1
+#define msize		s2
+#define bonito		s4
+#define dbg			s5
+#define sdCfg		s6
+
+
+/* Macros */
+#ifdef RT_SELF_BOOT_DEBUG
+#define	PRINTSTR(str) \
+    .pushsection .selfboot_data; .align 4; 98: .asciz str; .popsection; la a0, 98b; bal stringserial; nop
+#else
+#define PRINTSTR(x)
+#endif
+
+#define	DELAY(count)	\
+    li v0, count;	\
+99:			\
+    bnez	v0, 99b;\
+    addiu	v0, -1
+
+.section ".selfboot", "ax"
+.set	noreorder
+.set	mips32
+.globl	_start
+.extern	start
+_start:
+
+/* NMI/Reset vector starts here*/
+  mtc0  zero, CP0_STATUS /* set cp0 status register to zero */
+  mtc0  zero, CP0_CAUSE /* set cp0 cause register to zero */
+
+  li  t0, ST0_BEV /* set exception vector to in flash location */
+  mtc0 t0, CP0_STATUS
+
+  /* Speed up SPI reading */
+  li  t0, 0xbfe80000 /* load SPI0 controler base address to t0 */
+  li  t1, 0x17 /* load "div 4, fast_read + burst_en + memory_en double I/O" to
+                * to t0 for write, not all the flash chips support this mode */
+  sb  t1, 0x4(t0) /* set sfc_param register */
+  li  t1, 0x05
+  sb  t1, 0x6(t0) /* set sfc_timing register */
+
+  bal	locate			/* branch out of vector and get current address to ra */
+    nop
+
+/* in-flash exception vectors start here */
+/* save the exception types to a0 and print out PANIC message in exc_common */
+#define EXC_TLB_REFILL 0x0
+#define EXC_CACHE_ERR	0x1
+#define EXC_GEN	0x2
+#define EXC_INT	0x3
+
+.org 0x200 /* 0xbfc00200 TLB_REFILL exception */
+  li a0, EXC_TLB_REFILL
+  b exc_common
+  nop
+
+.org 0x300 /* 0xbfc00300 Cache Error exception */
+  li a0, EXC_CACHE_ERR
+  b exc_common
+  nop
+
+.org 0x380 /* 0xbfc00300 General exception */
+  li	a0,EXC_GEN
+  b exc_common
+  nop
+
+.org 0x400 /* 0xbfc00400 Interrupt exception */
+  li a0, EXC_INT
+  b exc_common
+  nop
+
+1: /* impossible to reach here, so make a dead loop */
+  b 1b
+  nop
+
+exc_common: /* try one cause and pass to next */
+  li	s1, EXC_TLB_REFILL
+  bne a0, s1, 1f
+  nop
+  PRINTSTR("\r\nEARLY_PANIC: Exception TLB Refill")
+  b print_cause
+  nop
+1:
+  li	s1, EXC_CACHE_ERR
+  bne a0, s1, 1f
+  nop
+  PRINTSTR("\r\nEARLY_PANIC: CACHE Error: ")
+  mfc0 a0, CP0_CACHEERR
+  bal hexserial
+  nop
+  b print_cause
+  nop
+1:
+  li	s1, EXC_GEN
+  bne a0, s1, 1f
+  nop
+  PRINTSTR("\r\nEARLY_PANIC: General Exception")
+  b print_cause
+  nop
+1:
+  li	s1, EXC_INT
+  bne a0, s1, print_cause /* if all exceptions in a0 not reached,
+                          * print_cause directly*/
+  nop
+  PRINTSTR("\r\nEARLY_PANIC: Interrupt Exception")
+print_cause:
+  PRINTSTR("\r\nCAUSE=")
+  mfc0	a0, CP0_CAUSE
+  bal	hexserial
+  nop
+
+  PRINTSTR("\r\nSTATUS=")
+  mfc0	a0, CP0_STATUS
+  bal	hexserial
+  nop
+
+  PRINTSTR("\r\nERRORPC=")
+  mfc0	a0, CP0_ERROREPC
+  bal	hexserial
+  nop
+
+  PRINTSTR("\r\nEPC=")
+  mfc0	a0, CP0_EPC
+  bal	hexserial
+  nop
+
+  PRINTSTR("\r\nBADADDR=")
+  mfc0	a0, CP0_BADVADDR
+  bal	hexserial
+  nop
+
+  PRINTSTR("\r\nEARLY: LOOP! Noting to do")
+1: /* Make a dead loop here, wait user to reset the MCU */
+  b 1b
+  nop
+
+/* locate here, continue the start progress */
+
+locate:
+  /* fix the absolute address by ra */
+  la  s0, start /* s0 = start */
+  subu  s0, ra, s0 /* s0 = ra - s0 */
+  and s0, 0xffff0000 /* s0 = s0 & 0xffff0000 */
+
+  li	t0, 0xbfe78030 /* load PLL/SDRAM freq config register base to t0 */
+  li	t2, (0x80000008 | (PLL_MULT << 8) | (0x3 << 2) | SDRAM_DIV) /* Set PLL
+                                                                  * MULT and PLL DIV */
+  li	t3, (0x00008003 | (CPU_DIV << 8)) /* set CPU DEV */
+
+  li	t1, 0x2
+    sw	t1, 0x4(t0) /* disable CPU_DIV_VALID firstly for adjustment */
+    sw	t2, 0x0(t0) /* write START_FREQ */
+    sw	t3, 0x4(t0) /* write CLK_DIV_PARAM */
+
+/* start to initialize debug uart port */
+  la	v0, LS1C_UART2_BASE /* load UART2 base to v0, only UART2 can be debug port */
+1:
+    li	v1, FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER_4 /* clear Rx,Tx FIFO
+                                                                * declear 4 bit int trigger */
+    sb	v1, LS1C_UART_FCR_OFFSET(v0) /* write FCR (FIFO control register) */
+    li	v1, CFCR_DLAB /* reach freq div register */
+    sb	v1, LS1C_UART_LCR_OFFSET(v0) /* write LCR (Line control register)*/
+    /* Set UART2 reuse with GPIO36,37*/
+    li		a0, LS1C_CBUS_FIRST1 /* load CBUS_FIRST1 offset to a0 */
+    lw		a1, 0x10(a0) /* load value from CBUS_SECOND1 to a1 */
+    ori		a1, 0x30 /* a1 |= 0x30, GPIO36,37 as secondary function */
+    sw		a1, 0x10(a0) /* write back modified CBUS_SECOND1 from a1 */
+  /* Caculate PLL and bit rate */
+    li		a0, 0xbfe78030 /* load START_FREQ register address to a0 */
+    lw		a1, 0(a0) /* load value from START_FREQ to a1*/
+    srl		a1, 8 /* a1 >>= 8 */
+    andi	a1, 0xff /* a1 &= 0xff, as a1=PLL_MULT */
+    li		a2, APB_CLK /* a2 = APB_CLK = 24Mhz (External Clock Freq) */
+    srl		a2, 2 /* a2 = a2 >> 2 = APB_CLK/4 */
+    multu	a1, a2 /* hilo = a1 * a2 = PLL_MULT * APB_CLK /4 */
+    mflo	v1 /* v1 = lo. put low 32 bit of a1 * a2 to v1 as PLL freq */
+    /* Determine if we need to devide the clock */
+    lw		a1, 4(a0) /* load value frm CLK_DIV_PARAM to a1 */
+    andi	a2, a1, DIV_CPU_SEL /* a2 = a1 & DIV_CPU_SEL, if CPU_SEL=1, devide the clock,
+                            * if CPU_SEL=0, bypass the clock */
+    bnez	a2, 1f /* if (a2 != 0), branch to next tag 1 */
+    nop
+    li		v1, APB_CLK /* v1 = APB_CLK */
+    b		3f
+    nop
+1: /* Determine if the CPU_DIV is valid*/
+    andi	a2, a1, DIV_CPU_EN /* a2 = a1 & DIV_CPU_EN */
+    bnez	a2, 2f /* if (a2 != 0), branch to next tag 2 */
+    nop
+    srl		v1, 1 /* v1 >>= 1, so v1 = APB_CLK/4 * PLL_MULT/2 */
+    b		3f
+    nop
+2: /* caculate CPU freq */
+    andi	a1, DIV_CPU /* a1 &= DIV_CPU */
+    srl		a1, DIV_CPU_SHIFT /* a1 >>= DIV_CPU_SHIFT */
+    divu	v1, a1 /* lo = v1/a1, hi = v1 % a1 */
+    mflo	v1 /* v1 = lo, CPU Freq */
+3:
+    li		a1, (16 * EARLY_DEBUG_BAUD) /* a1 = 16 * BIT RATE */
+    divu	v1, v1, a1 /* v1 = v1 / a1 */
+    srl     v1, 1  /* v1 >>= 1 */
+    sb	v1, LS1C_UART_LSB_OFFSET(v0) /* write 8bit low into LSB */
+    srl	v1, 8 /* v1 >>= 8 */
+    sb	v1, LS1C_UART_MSB_OFFSET(v0) /* write 8bit low into MSB */
+
+    li	v1, CFCR_8BITS /* 8n1, no check */
+    sb	v1, LS1C_UART_LCR_OFFSET(v0) /* write to LCR (Line Control Register) */
+
+#ifdef EARLY_DEBUG_UART_FLOW_CTRL
+    li	v1, MCR_DTR|MCR_RTS /* valid DTR and RTS */
+    sb	v1, LS1C_UART_MCR_OFFSET(v0) /* write to MCR (MODEM Control Register) */
+#endif
+
+    li	v1, 0x0 /* disable all the interruptions */
+    sb	v1, LS1C_UART_IER_OFFSET(v0) /* write to IER (Interruptions Enable Registers) */
+
+    PRINTSTR("\r\INFO: Loongson 1C300 Starting :) \r\n")
+
+  /* disable all GPIOs for conflict functions */
+  li a0,0xbfd00000
+  sw zero,0x10c0(a0)	/* disable GPIO 0-31 */
+  sw zero,0x10c4(a0)	/* disable GPIO 32-63 */
+  sw zero,0x10c8(a0)	/* disable GPIO 64-95 */
+  sw zero,0x10cc(a0)
+
+  li t0, 0xffffffff
+  sw t0, 0x10d0(a0)
+  sw t0, 0x10d4(a0)
+  sw t0, 0x10d8(a0)
+  sw t0, 0x10dc(a0)
+
+  sw t0, 0x10f0(a0)
+  sw t0, 0x10f4(a0)
+  sw t0, 0x10f8(a0)
+  sw t0, 0x10fc(a0)
+
+  PRINTSTR("\r\INFO: All GPIOs are disabled\r\n")
+
+  /* SDRAM initialize starts here */
+
+  li msize, MEM_SIZE
+
+#ifdef EJTAG_SEL_AS_SDRAM_CS1
+  li		a0, 0xbfd011c0
+  lw		a1, 0x40(a0)
+  ori	a1, 0x01
+  sw		a1, 0x40(a0)
+  PRINTSTR("\r\INFO: EJTAG_SEL PIN as SDRAM_CS1\r\n")
+#endif
+
+/*
+* recommanded by user manual, we should write SD_CONFIG[31:0] first, then
+* write SD_CONFIG[63:32]. Repeat writing for three times, valid the config in
+* the last time.
+*/
+
+/* write first time */
+li  	t1, 0xbfd00410 /* load SD_CONFIG[31:0] address to t1 */
+li		a1, SD_PARA0 /* get the memory config from macro SD_PARA0 */
+sw		a1, 0x0(t1) /* write to SD_CONFIG[31:0] */
+li		a1, SD_PARA1
+sw		a1, 0x4(t1) /* write to SD_CONFIG[63:32] with offset */
+PRINTSTR("\r\INFO: SDRAM Config Pass1\r\n")
+
+/* write second time,the same */
+li		a1, SD_PARA0
+sw		a1, 0x0(t1)
+li		a1, SD_PARA1
+sw		a1, 0x4(t1)
+PRINTSTR("\r\INFO: SDRAM Config Pass2\r\n")
+
+/* write third time, enable controller this time */
+li		a1, SD_PARA0
+sw		a1, 0x0(t1)
+li		a1, SD_PARA1_EN /* enable it */
+sw		a1, 0x4(t1)
+PRINTSTR("\r\INFO: SDRAM initialize compeleted\r\n")
+
+
+/* initialize cache */
+bal     cache_init /* branch to cache_init */
+nop
+
+/* enable cache */
+mfc0   a0, CP0_CONFIG /* load cp0 config to a0 */
+and    a0, a0, ~((1<<12) | 7) /* a0 = a0 & ~((1<<12) | 7) */
+or     a0, a0, 2 /* a0 |= 2 */
+mtc0   a0, CP0_CONFIG /* write back to CP0 config */
+
+/*
+* relocate: copy selfboot code to memory in kseg0, fix PC and jump to kseg0.
+* in order to speed up the copy progress, we will execute copy code in kseg0
+*/
+
+PRINTSTR("\r\INFO: Relocating")
+la		t0, text_copy_start /* load the adress of start tag to t0 */
+move		t2, t0
+addu		t0, s0 /* correct t0 address in rom by s0 */
+la		t1, text_copy_end
+
+selfboot_copy_loop:
+lw		v0, (t0) /* copy from memory address in t0 to register v0  */
+sw		v0, (t2) /* write data in register v0 to memory address t0 */
+addiu		t0, 0x4 /* t0 moves forward 4 bytes */
+addiu		t2, 0x4 /* t2 moves forward 4 bytes */
+ble		t2, t1, selfboot_copy_loop /* if t1 <= t2 loop to continue the copy */
+nop
+
+la		t0, text_copy_start /* load start address to t0 */
+jr		t0 /* jump to 122 in kseg0 to start copy code progress */
+nop
+
+text_copy_start:
+/* Copy code to memory*/
+la		a0, start /* load address of start symbol to a0  */
+addu		a1, a0, s0 /* correct a0 to address in flash */
+la		a2, _edata /* load symbol _edata address to a2 */
+subu	t1, a2, a0 /* t1 = a2 - a0, the space of text area */
+
+move	t0, a0 /* the start address in ram */
+move	t1, a1 /* the start address in rom */
+move	t2, a2 /* the end address in rom (symbol _edata) */
+
+/* copy text section */
+1:
+and	t3, t0, 0x0000ffff /* t3 = t0 & 0x0000ffff, get low 16 bit */
+bnez	t3, 2f /* if t3 != 0, jump to next tag 2 */
+nop
+2:
+lw		t3, 0(t1) /* copy 4 bit from memory address t1 to register t3 */
+nop
+sw		t3, 0(t0) /* copy 4 bit from register t3 to memory address in t0 */
+addu	t0, 4 /* t0 move forward 4 bytes */
+addu	t1, 4 /* t1 move forward 4 bytes */
+bne	t2, t0, 1b /* if t2 != t0, branch to last tag 1 to continue copy */
+nop
+/* copy text section done. */
+
+move	a0, msize  /* a0 = msize, will be passed to main */
+srl	a0, 20 /* a0 >>= 20, convert to unit in MB */
+
+/* execute main */
+la		v0, _rtthread_entry /* load address of function main to v0 */
+jalr	v0 /* call address in v0, congrats! all low_level things done!
+          * switch brain out of assembly */
+nop
+text_copy_end: /* end of self-copy in memory */
+
+loop: /* impossible to reach here, make a dead loop */
+b	loop
+nop
+
+/* functions here */
+
+LEAF(stringserial) /* print out the string in address passed in a0  */
+    nop
+    move	a2, ra  /* save the return address to a2 */
+    addu	a1, a0, s0 /* correct the address in ROM */
+    lbu	a0, 0(a1) /* read the first byte in memory address a1 to a0 */
+1:
+    beqz	a0, 2f /* if a0 == 0, jump to next tag 2, empty char */
+    nop
+    bal	tgt_putchar /* print a char */
+    addiu	a1, 1 /* a1 += 1 move forward to next byte */
+    b	1b /* branch to the last tag 1, continue */
+    lbu	a0, 0(a1) /* load the next bit from address a1 to a0, in delay solt,
+                * will be execuated before branch */
+2:
+    j	a2 /* return */
+    nop
+END(stringserial)
+
+
+LEAF(hexserial) /* print out single hex char passed in register a0 */
+    nop
+    move	a2, ra /* move return address from ra to a2  */
+    move	a1, a0 /* move hex char from register a0 to a1 */
+    li	a3, 7 /* load 7 to a3 */
+1:
+    rol	a0, a1, 4 /* rotate left ward shift for 4 bit in a1 to a0 */
+    move	a1, a0
+    and	a0, 0xf
+    la	v0, hexchar
+
+.pushsection .selfboot_data
+.align	4
+hexchar:
+        .ascii	"0123456789abcdef"
+.popsection
+.align	4
+
+    addu	v0, s0
+    addu	v0, a0
+    bal	tgt_putchar
+    lbu	a0, 0(v0)
+
+    bnez	a3, 1b
+    addu	a3, -1
+
+    j	a2
+    nop
+END(hexserial)
+
+LEAF(tgt_putchar) /* print out a char in a0 */
+    la	v0, LS1C_UART2_BASE /* load UART register address to a0 */
+    lbu	v1, LS1C_UART_LSR_OFFSET(v0) /* load value from LSR to v0 */
+1:
+    and	v1, LSR_TXRDY /* v1 &= LSR_TXRDY determine wether we can send by TFE bit */
+    beqz	v1, 1b /* if (v1 == 0) jump to last 1 tag, waiting until TFE is 1 */
+    lbu	v1, LS1C_UART_LSR_OFFSET(v0) /* load value from LSR to v0 again, in delay solt */
+
+    sb	a0, LS1C_UART_DAT_OFFSET(v0) /* write a0 into DAT, send out */
+    j	ra /*  */
+    nop
+END(tgt_putchar)
+
+LEAF(CPU_SetSR) /* modify SR value, arg 1 = set bits, arg 2 = clear bits. */
+    mfc0    v0, CP0_STATUS
+    not v1, a1
+    and v1, v0
+    or  v1, a0
+    mtc0    v1, CP0_STATUS
+    nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+    j   ra
+    nop
+END(CPU_SetSR)
+
+cache_init:
+    move t1, ra
+####part 2####
+cache_detect_4way:
+    mfc0	t4, CP0_CONFIG,1 /* move CP0 CONFIG to t4 */
+    lui		v0, 0x7 /* v0 = 0x7 << 16 */
+    and		v0, t4, v0 /* v0 = t4 & v0 */
+    srl		t3, v0, 16 /* t3 = v0 >> 16  Icache组相联数 IA */
+
+    li		t5, 0x800 		//32*64
+    srl		v1, t4,22		//v1 = t4 >> 22
+    andi	v1, 7			//Icache每路的组数 64x2^S IS
+    sll		t5, v1			//InstCacheSetSize
+    sll		t5, t3			//t5 InstCacheSize
+
+
+    andi	v0, t4, 0x0380
+    srl		t7, v0, 7		//DA
+
+    li		t6, 0x800       // 32*64
+    srl		v1, t4,13
+    andi	v1, 7			//DS
+    sll		t6, v1          // DataCacheSetSize
+    sll		t6, t7          // t5 DataCacheSize
+
+####part 3####
+    lui		a0, 0x8000			//a0 = 0x8000 << 16
+    addu	a1, $0, t5
+    addu	a2, $0, t6
+cache_init_d2way:
+/* a0=0x80000000, a1=icache_size, a2=dcache_size */
+/* a3, v0 and v1 used as local registers */
+    mtc0	$0, CP0_TAGHI
+    addu	v0, $0, a0 /* v0 = 0 + a0 */
+    addu	v1, a0, a2 /* v1 = a0 + a2 */
+1:	slt		a3, v0, v1 /* a3 = v0 < v1 ? 1 : 0 */
+    beq		a3, $0, 1f /* if (a3 == 0) goto 1f */
+    nop
+    mtc0	$0, CP0_TAGLO
+    cache	Index_Store_Tag_D, 0x0(v0) /* 1 way */
+4:	beq		$0, $0, 1b
+    addiu	v0, v0, 0x20
+1:
+cache_flush_i2way:
+    addu	v0, $0, a0
+    addu	v1, a0, a1
+1:
+    slt		a3, v0, v1
+    beq		a3, $0, 1f
+    nop
+    cache	Index_Invalidate_I, 0x0(v0) /* 1 way */
+4:
+    beq		$0, $0, 1b
+    addiu	v0, v0, 0x20
+1:
+cache_flush_d2way:
+    addu	v0, $0, a0
+    addu	v1, a0, a2
+1:	slt		a3, v0, v1
+    beq		a3, $0, 1f
+    nop
+    cache	Index_Writeback_Inv_D, 0x0(v0) /* 1 way */
+4:	beq		$0, $0, 1b
+    addiu	v0, v0, 0x20
+
+1:
+cache_init_finish:
+    jr	t1
+    nop
+#endif
diff --git a/bsp/ls1cdev/ls1c_ram.lds b/bsp/ls1cdev/ls1c_ram.lds
index 9fa91ba5df..38aabfe012 100644
--- a/bsp/ls1cdev/ls1c_ram.lds
+++ b/bsp/ls1cdev/ls1c_ram.lds
@@ -12,6 +12,7 @@
  * 2010-05-17     swkyer       first version
  * 2010-09-04     bernard      move the beginning entry to 0x80200000
  * 2018-05-12     zhuangwei    use -Ttext
+ * 2019-12-04     Jiaxun Yang  Adapt new memory layout
  */
 
 OUTPUT_ARCH(mips)
@@ -20,13 +21,19 @@ GROUP(-lgcc -lc)
 ENTRY(_start)
 SECTIONS
 {
-    . = 0x80000000 ;
-
     . = ALIGN(4);
     .text : 
     {
-		start = ABSOLUTE(.);
-		*(.start);
+	start = ABSOLUTE(.);
+	 *(.selfboot);
+	 *(.selfboot_data);
+	. = ALIGN(4);
+	__selfboot_end = .;
+	. = ALIGN(0x1000);
+	__ebase_entry = .;
+     	KEEP(*(.exc_vectors))
+     	__ebase_end = .;
+	 *(.start);
          *(.text)
          *(.text.*)
          *(.rodata)
@@ -74,6 +81,15 @@ SECTIONS
          *(.sdata)
          *(.sdata.*)
     }
+    _edata = .;
+
+    .stack :
+    {
+        . = ALIGN(8);
+        _system_stack_start = .;
+        . = . + 0x400; /* 1kb system stack */
+        _system_stack = .;
+    }
 
     .sbss : 
     {
diff --git a/bsp/ls1cdev/rtconfig.h b/bsp/ls1cdev/rtconfig.h
index b0bc8ae485..a2bac5d6f0 100644
--- a/bsp/ls1cdev/rtconfig.h
+++ b/bsp/ls1cdev/rtconfig.h
@@ -8,28 +8,16 @@
 
 #define RT_NAME_MAX 10
 #define RT_ALIGN_SIZE 8
-/* RT_THREAD_PRIORITY_8 is not set */
 #define RT_THREAD_PRIORITY_32
-/* RT_THREAD_PRIORITY_256 is not set */
 #define RT_THREAD_PRIORITY_MAX 32
 #define RT_TICK_PER_SECOND 1000
 #define RT_USING_OVERFLOW_CHECK
 #define RT_USING_HOOK
+#define RT_USING_IDLE_HOOK
 #define RT_IDLE_HOOK_LIST_SIZE 4
 #define IDLE_THREAD_STACK_SIZE 1024
-/* RT_USING_TIMER_SOFT is not set */
 #define RT_DEBUG
 #define RT_DEBUG_COLOR
-/* RT_DEBUG_INIT_CONFIG is not set */
-/* RT_DEBUG_THREAD_CONFIG is not set */
-/* RT_DEBUG_SCHEDULER_CONFIG is not set */
-/* RT_DEBUG_IPC_CONFIG is not set */
-/* RT_DEBUG_TIMER_CONFIG is not set */
-/* RT_DEBUG_IRQ_CONFIG is not set */
-/* RT_DEBUG_MEM_CONFIG is not set */
-/* RT_DEBUG_SLAB_CONFIG is not set */
-/* RT_DEBUG_MEMHEAP_CONFIG is not set */
-/* RT_DEBUG_MODULE_CONFIG is not set */
 
 /* Inter-Thread communication */
 
@@ -38,27 +26,22 @@
 #define RT_USING_EVENT
 #define RT_USING_MAILBOX
 #define RT_USING_MESSAGEQUEUE
-/* RT_USING_SIGNALS is not set */
 
 /* Memory Management */
 
 #define RT_USING_MEMPOOL
 #define RT_USING_MEMHEAP
-/* RT_USING_NOHEAP is not set */
 #define RT_USING_SMALL_MEM
-/* RT_USING_SLAB is not set */
-/* RT_USING_MEMHEAP_AS_HEAP is not set */
-/* RT_USING_MEMTRACE is not set */
 #define RT_USING_HEAP
 
 /* Kernel Device Object */
 
 #define RT_USING_DEVICE
-/* RT_USING_DEVICE_OPS is not set */
 #define RT_USING_INTERRUPT_INFO
 #define RT_USING_CONSOLE
 #define RT_CONSOLEBUF_SIZE 128
 #define RT_CONSOLE_DEVICE_NAME "uart2"
+#define RT_VER_NUM 0x40002
 
 /* RT-Thread Components */
 
@@ -69,7 +52,6 @@
 
 /* C++ features */
 
-/* RT_USING_CPLUSPLUS is not set */
 
 /* Command shell */
 
@@ -79,14 +61,11 @@
 #define FINSH_HISTORY_LINES 5
 #define FINSH_USING_SYMTAB
 #define FINSH_USING_DESCRIPTION
-/* FINSH_ECHO_DISABLE_DEFAULT is not set */
 #define FINSH_THREAD_PRIORITY 20
 #define FINSH_THREAD_STACK_SIZE 4096
 #define FINSH_CMD_SIZE 80
-/* FINSH_USING_AUTH is not set */
 #define FINSH_USING_MSH
 #define FINSH_USING_MSH_DEFAULT
-/* FINSH_USING_MSH_ONLY is not set */
 #define FINSH_ARG_MAX 10
 
 /* Device virtual file system */
@@ -96,29 +75,6 @@
 #define DFS_FILESYSTEMS_MAX 2
 #define DFS_FILESYSTEM_TYPES_MAX 2
 #define DFS_FD_MAX 4
-/* RT_USING_DFS_MNTTABLE is not set */
-#define RT_USING_DFS_ELMFAT
-
-/* elm-chan's FatFs, Generic FAT Filesystem Module */
-
-#define RT_DFS_ELM_CODE_PAGE 936
-#define RT_DFS_ELM_WORD_ACCESS
-#define RT_DFS_ELM_USE_LFN_0
-/* RT_DFS_ELM_USE_LFN_1 is not set */
-/* RT_DFS_ELM_USE_LFN_2 is not set */
-/* RT_DFS_ELM_USE_LFN_3 is not set */
-#define RT_DFS_ELM_USE_LFN 0
-#define RT_DFS_ELM_MAX_LFN 64
-#define RT_DFS_ELM_DRIVES 2
-#define RT_DFS_ELM_MAX_SECTOR_SIZE 512
-/* RT_DFS_ELM_USE_ERASE is not set */
-#define RT_DFS_ELM_REENTRANT
-/* RT_USING_DFS_DEVFS is not set */
-/* RT_USING_DFS_ROMFS is not set */
-/* RT_USING_DFS_RAMFS is not set */
-/* RT_USING_DFS_UFFS is not set */
-/* RT_USING_DFS_JFFS2 is not set */
-/* RT_USING_DFS_NFS is not set */
 
 /* Device Drivers */
 
@@ -126,200 +82,95 @@
 #define RT_PIPE_BUFSZ 512
 #define RT_USING_SERIAL
 #define RT_SERIAL_USING_DMA
+#define RT_SERIAL_RB_BUFSZ 64
 #define RT_USING_CAN
-/* RT_CAN_USING_HDR is not set */
-/* RT_USING_HWTIMER is not set */
-/* RT_USING_CPUTIME is not set */
 #define RT_USING_I2C
 #define RT_USING_I2C_BITOPS
 #define RT_USING_PIN
-/* RT_USING_PWM is not set */
-/* RT_USING_MTD_NOR is not set */
-/* RT_USING_MTD_NAND is not set */
-/* RT_USING_MTD is not set */
-/* RT_USING_PM is not set */
-/* RT_USING_RTC is not set */
-/* RT_USING_SDIO is not set */
 #define RT_USING_SPI
 #define RT_USING_SPI_MSD
-/* RT_USING_SFUD is not set */
-/* RT_USING_W25QXX is not set */
-/* RT_USING_GD is not set */
-/* RT_USING_ENC28J60 is not set */
-/* RT_USING_SPI_WIFI is not set */
-/* RT_USING_WDT is not set */
-/* RT_USING_AUDIO is not set */
-
-/* Using WiFi */
-
-/* RT_USING_WIFI is not set */
 
 /* Using USB */
 
-/* RT_USING_USB_HOST is not set */
-/* RT_USING_USB_DEVICE is not set */
 
 /* POSIX layer and C standard library */
 
 #define RT_USING_LIBC
 #define RT_USING_PTHREADS
-/* RT_USING_POSIX is not set */
-/* RT_USING_MODULE is not set */
+#define PTHREAD_NUM_MAX 8
 
 /* Network */
 
 /* Socket abstraction layer */
 
-/* RT_USING_SAL is not set */
-
-/* light weight TCP/IP stack */
-
-#define RT_USING_LWIP
-#define RT_USING_LWIP141
-/* RT_USING_LWIP202 is not set */
-/* RT_USING_LWIP210 is not set */
-#define RT_LWIP_IGMP
-#define RT_LWIP_ICMP
-/* RT_LWIP_SNMP is not set */
-#define RT_LWIP_DNS
-#define RT_LWIP_DHCP
-#define IP_SOF_BROADCAST 1
-#define IP_SOF_BROADCAST_RECV 1
 
-/* Static IPv4 Address */
+/* Network interface device */
 
-#define RT_LWIP_IPADDR "192.168.1.254"
-#define RT_LWIP_GWADDR "192.168.1.1"
-#define RT_LWIP_MSKADDR "255.255.255.0"
-#define RT_LWIP_UDP
-#define RT_LWIP_TCP
-/* RT_LWIP_RAW is not set */
-/* RT_LWIP_PPP is not set */
-#define RT_MEMP_NUM_NETCONN 8
-#define RT_LWIP_PBUF_NUM 4
-#define RT_LWIP_RAW_PCB_NUM 4
-#define RT_LWIP_UDP_PCB_NUM 4
-#define RT_LWIP_TCP_PCB_NUM 3
-#define RT_LWIP_TCP_SEG_NUM 40
-#define RT_LWIP_TCP_SND_BUF 4096
-#define RT_LWIP_TCP_WND 2048
-#define RT_LWIP_TCPTHREAD_PRIORITY 12
-#define RT_LWIP_TCPTHREAD_MBOX_SIZE 8
-#define RT_LWIP_TCPTHREAD_STACKSIZE 4096
-/* LWIP_NO_RX_THREAD is not set */
-/* LWIP_NO_TX_THREAD is not set */
-#define RT_LWIP_ETHTHREAD_PRIORITY 14
-#define RT_LWIP_ETHTHREAD_STACKSIZE 512
-#define RT_LWIP_ETHTHREAD_MBOX_SIZE 8
-/* RT_LWIP_REASSEMBLY_FRAG is not set */
-#define LWIP_NETIF_STATUS_CALLBACK 1
-#define SO_REUSE 1
-#define LWIP_SO_RCVTIMEO 1
-#define LWIP_SO_SNDTIMEO 1
-#define LWIP_SO_RCVBUF 1
-/* RT_LWIP_NETIF_LOOPBACK is not set */
-#define LWIP_NETIF_LOOPBACK 0
-/* RT_LWIP_STATS is not set */
-/* RT_LWIP_DEBUG is not set */
 
-/* Modbus master and slave stack */
+/* light weight TCP/IP stack */
 
-/* RT_USING_MODBUS is not set */
 
 /* AT commands */
 
-/* RT_USING_AT is not set */
-/* LWIP_USING_DHCPD is not set */
 
 /* VBUS(Virtual Software BUS) */
 
-/* RT_USING_VBUS is not set */
 
 /* Utilities */
 
-/* RT_USING_LOGTRACE is not set */
-/* RT_USING_RYM is not set */
-/* RT_USING_ULOG is not set */
 
-/* RT-Thread online packages */
+/* RT-Thread MIPS CPU */
 
-/* system packages */
 
-/* RT-Thread GUI Engine */
-
-/* PKG_USING_GUIENGINE is not set */
-/* PKG_USING_LWEXT4 is not set */
-/* PKG_USING_PARTITION is not set */
-/* PKG_USING_SQLITE is not set */
-/* PKG_USING_RTI is not set */
+/* RT-Thread online packages */
 
 /* IoT - internet of things */
 
-/* PKG_USING_PAHOMQTT is not set */
-/* PKG_USING_WEBCLIENT is not set */
-/* PKG_USING_MONGOOSE is not set */
-/* PKG_USING_WEBTERMINAL is not set */
-/* PKG_USING_CJSON is not set */
-/* PKG_USING_LJSON is not set */
-/* PKG_USING_EZXML is not set */
-/* PKG_USING_NANOPB is not set */
-/* PKG_USING_GAGENT_CLOUD is not set */
 
 /* Wi-Fi */
 
 /* Marvell WiFi */
 
-/* PKG_USING_WLANMARVELL is not set */
 
 /* Wiced WiFi */
 
-/* PKG_USING_WLAN_WICED is not set */
-/* PKG_USING_COAP is not set */
-/* PKG_USING_NOPOLL is not set */
-/* PKG_USING_NETUTILS is not set */
+
+/* IoT Cloud */
+
 
 /* security packages */
 
-/* PKG_USING_MBEDTLS is not set */
-/* PKG_USING_libsodium is not set */
-/* PKG_USING_TINYCRYPT is not set */
 
 /* language packages */
 
-/* PKG_USING_JERRYSCRIPT is not set */
-/* PKG_USING_MICROPYTHON is not set */
 
 /* multimedia packages */
 
-/* PKG_USING_OPENMV is not set */
 
 /* tools packages */
 
-/* PKG_USING_CMBACKTRACE is not set */
-/* PKG_USING_EASYLOGGER is not set */
-/* PKG_USING_SYSTEMVIEW is not set */
-/* PKG_USING_IPERF is not set */
+
+/* system packages */
+
+
+/* peripheral libraries and drivers */
+
 
 /* miscellaneous packages */
 
-/* PKG_USING_FASTLZ is not set */
-/* PKG_USING_MINILZO is not set */
-/* PKG_USING_QUICKLZ is not set */
-/* PKG_USING_MULTIBUTTON is not set */
 
-/* example package: hello */
+/* samples: kernel and components samples */
 
-/* PKG_USING_HELLO is not set */
-/* RT_USING_SELF_BOOT is not set */
+#define SOC_1C300
+#define RT_LS1C_BAICAIBOARD
+#define RT_USING_SELF_BOOT
+#define RT_SELF_BOOT_DEBUG
 #define RT_USING_UART2
+#define RT_USING_UART1
 #define RT_UART_RX_BUFFER_SIZE 64
 #define RT_USING_GMAC_INT_MODE
-/* RT_USING_FPU is not set */
-/* RT_USING_SPI0 is not set */
-/* RT_USING_SPI1 is not set */
 #define RT_USING_I2C1
 #define RT_USING_I2C2
-#define USING_BXCAN0
-#define USING_BXCAN1
+#define NO_TOUCH
 
 #endif
diff --git a/bsp/ls1cdev/rtconfig.py b/bsp/ls1cdev/rtconfig.py
index 6420cc45bb..be5da5d30a 100644
--- a/bsp/ls1cdev/rtconfig.py
+++ b/bsp/ls1cdev/rtconfig.py
@@ -2,7 +2,7 @@ import os
 
 # CPU options
 ARCH='mips'
-CPU ='loongson_1c'
+CPU ='gs232'
 
 # toolchains options
 CROSS_TOOL  = 'gcc'
@@ -12,8 +12,8 @@ if os.getenv('RTT_CC'):
 
 if  CROSS_TOOL == 'gcc':
 	PLATFORM    = 'gcc'
-#	EXEC_PATH   = "/opt/mips-2015.05/bin"
-	EXEC_PATH   = r'D:\mgc\embedded\codebench\bin'
+	EXEC_PATH   = "/opt/mips-2016.05/bin"
+#	EXEC_PATH   = r'D:\mgc\embedded\codebench\bin'
 else:
     print('================ERROR===========================')
     print('Not support %s yet!' % CROSS_TOOL)
@@ -41,7 +41,7 @@ READELF = PREFIX + 'readelf'
 
 DEVICE = ' -mips32 -msoft-float -mfp32'
 CFLAGS = DEVICE + ' -EL -G0 -mno-abicalls -fno-pic -fno-builtin -fno-exceptions -ffunction-sections -fomit-frame-pointer'
-AFLAGS = ' -c' + DEVICE + ' -EL -fno-pic -fno-builtin -mno-abicalls -x assembler-with-cpp -DSYSTEM_STACK=0x80003fe8'
+AFLAGS = ' -c' + DEVICE + ' -EL -fno-pic -fno-builtin -mno-abicalls -x assembler-with-cpp'
 LFLAGS = DEVICE + ' -nostartfiles -EL -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,Reset_Handler -T ls1c_ram.lds'
 
 CPATH = ''