diff --git a/bsp/ls1bdev/application.c b/bsp/ls1bdev/application.c
deleted file mode 100644
index fae195627dbcd6a64504f63eac969ad4bd30a96c..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/application.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * File      : application.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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();
-			
-		/* re-init device driver */
-		rt_device_init_all();
-	
-		/* find Display Controller device */
-		dc = rt_device_find("dc");
-	
-		/* set Display Controller device as rtgui graphic driver */		
-		rtgui_graphic_set_device(dc);
-	
-		/* startup rtgui */
-		rtgui_startup();
-	}
-#endif
-}
-
-int rt_application_init()
-{
-	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/board.c b/bsp/ls1bdev/board.c
deleted file mode 100644
index cea1fb5b56c7e36bc8b889c7eb2e49d647340ba4..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/board.c
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * File      : board.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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 <rthw.h>
-
-#include "board.h"
-#include "uart.h"
-#include "ls1b.h"
-
-/**
- * @addtogroup Loongson LS1B
- */
- 
-/*@{*/
-
-/**
- * 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();
-#endif
-
-#ifdef RT_USING_CONSOLE
-	/* set console device */
-	rt_console_set_device("uart0");
-#endif
-
-	/* init operating system timer */
-	rt_hw_timer_init();
-
-	rt_kprintf("current sr: 0x%08x\n", read_c0_status());
-}
-
-/* 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)
-{
-	/* stream mode */
-	while (*ptr)
-	{
-		if (*ptr == '\n')
-		{
-			/* FIFO status, contain valid data */
-			while (!(UART_LSR(UART0_BASE) & (UARTLSR_TE | UARTLSR_TFE)));
-			/* write data */
-			UART_DAT(UART0_BASE) = '\r';
-		}
-
-		/* FIFO status, contain valid data */
-		while (!(UART_LSR(UART0_BASE) & (UARTLSR_TE | UARTLSR_TFE)));
-		/* write data */
-		UART_DAT(UART0_BASE) = *ptr;
-
-		ptr ++;
-	}
-}
-
-/*@}*/
diff --git a/bsp/ls1bdev/board.h b/bsp/ls1bdev/board.h
deleted file mode 100644
index 62481a2a450d7bdcaba91b13b8e09db0d8ebe4a7..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/board.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * File      : board.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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
- */
-
-#ifndef __BOARD_H__
-#define __BOARD_H__
-
-void rt_hw_board_init(void);
-
-/* 64M SDRAM */
-#define RT_HW_HEAP_END	(0x80000000 + 64 * 1024 * 1024)
-#define CPU_HZ			(125 * 1000000)
-
-#endif
diff --git a/bsp/ls1bdev/display_controller.c b/bsp/ls1bdev/display_controller.c
deleted file mode 100644
index 511f2dbe0d685ed7009137c8401386b1737d0753..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/display_controller.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * File      : display_controller.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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
- * 2011-08-09     lgnq         first version for LS1B DC
- */
-
-#include <rtthread.h>
-#include "display_controller.h"
-
-struct vga_struct vga_mode[] =
-{
-	{/*"640x480_70.00"*/    28560,  640,    664,    728,    816,    480,    481,    484,    500,    },
-	{/*"640x640_60.00"*/	33100,	640,	672,	736,	832,	640,	641,	644,	663,	},
-	{/*"640x768_60.00"*/	39690,	640,	672,	736,	832,	768,	769,	772,	795,	},
-	{/*"640x800_60.00"*/	42130,	640,	680,	744,	848,	800,	801,	804,	828,	},
-	{/*"800x480_70.00"*/    35840,  800,    832,    912,    1024,   480,    481,    484,    500,    },
-	{/*"800x600_60.00"*/	38220,	800,	832,	912,	1024,	600,	601,	604,	622,	},
-	{/*"800x640_60.00"*/	40730,	800,	832,	912,	1024,	640,	641,	644,	663,	},
-	{/*"832x600_60.00"*/	40010,	832,	864,	952,	1072,	600,	601,	604,	622,	},
-	{/*"832x608_60.00"*/	40520,	832,	864,	952,	1072,	608,	609,	612,	630,	},
-	{/*"1024x480_60.00"*/	38170,	1024,	1048,	1152,	1280,	480,	481,	484,	497,	},
-	{/*"1024x600_60.00"*/	48960,	1024,	1064,	1168,	1312,	600,	601,	604,	622,	},
-	{/*"1024x640_60.00"*/	52830,	1024,	1072,	1176,	1328,	640,	641,	644,	663,	},
-	{/*"1024x768_60.00"*/	64110,	1024,	1080,	1184,	1344,	768,	769,	772,	795,	},
-	{/*"1152x764_60.00"*/   71380,  1152,   1208,   1328,   1504,   764,    765,    768,    791,    },
-	{/*"1280x800_60.00"*/   83460,  1280,   1344,   1480,   1680,   800,    801,    804,    828,    },
-	{/*"1280x1024_55.00"*/  98600,  1280,   1352,   1488,   1696,   1024,   1025,   1028,   1057,   },
-	{/*"1440x800_60.00"*/   93800,  1440,   1512,   1664,   1888,   800,    801,    804,    828,    },
-	{/*"1440x900_67.00"*/   120280, 1440,   1528,   1680,   1920,   900,    901,    904,    935,    },
-};
-
-ALIGN(16)
-volatile rt_uint16_t _rt_framebuffer[FB_YSIZE][FB_XSIZE];
-static struct rt_device_graphic_info _dc_info;
-
-#define abs(x) ((x<0)?(-x):x)
-#define min(a,b) ((a<b)?a:b)
-
-int caclulate_freq(long long XIN, long long PCLK)
-{
-	int i;
-	long long clk, clk1;
-	int start, end;
-	int mi;
-	int pll,ctrl,div,div1,frac;
-
-	pll = PLL_FREQ;
-	ctrl = PLL_DIV_PARAM;
-	rt_kprintf("pll=0x%x, ctrl=0x%x\n", pll, ctrl);
-//	rt_kprintf("cpu freq is %d\n", tgt_pipefreq());
-	start = -1;
-	end = 1;
-
-	for (i=start; i<=end; i++)
-	{
-		clk = (12+i+(pll&0x3f))*33333333/2;
-		div = clk/(long)PCLK/1000;
-		clk1 = (12+i+1+(pll&0x3f))*33333333/2;
-		div1 = clk1/(long)PCLK/1000;
-		if (div!=div1)
-			break;
-	}
-
-	if (div!=div1)
-	{
-		frac = ((PCLK*1000*div1)*2*1024/33333333 - (12+i+(pll&0x3f))*1024)&0x3ff;
-		pll = (pll & ~0x3ff3f)|(frac<<8)|((pll&0x3f)+i);
-		ctrl = ctrl&~(0x1f<<26)|(div1<<26)|(1<<31);
-	}
-	else
-	{
-		clk = (12+start+(pll&0x3f))*33333333/2;
-		clk1 = (12+end+(pll&0x3f))*33333333/2;
-		if (abs((long)clk/div/1000-PCLK)<abs((long)clk1/(div+1)/1000-PCLK))
-		{
-			pll = (pll & ~0x3ff3f)|((pll&0x3f)+start);
-			ctrl = ctrl&~(0x1f<<26)|(div<<26)|(1<<31);
-		}
-		else
-		{
-			pll = (pll & ~0x3ff3f)|((pll&0x3f)+end);
-			ctrl = ctrl&~(0x1f<<26)|((div+1)<<26)|(1<<31);
-		}
-	}
-
-	rt_kprintf("new pll=0x%x, ctrl=0x%x\n", pll, ctrl);
-	ctrl |= 0x2a00;
-	PLL_DIV_PARAM = ctrl; 
-	PLL_FREQ = pll;
-	rt_thread_delay(10);
-//	initserial(0);
-//	_probe_frequencies();
-//	rt_kprintf("cpu freq is %d\n",tgt_pipefreq());
-	return 0;
-}
-
-static rt_err_t rt_dc_init(rt_device_t dev)
-{
-	int i, out, mode=-1;
-	int val;
-
-	for (i=0; i<sizeof(vga_mode)/sizeof(struct vga_struct); i++)
-	{
-		if (vga_mode[i].hr == FB_XSIZE && vga_mode[i].vr == FB_YSIZE)
-		{
-			mode=i;
-#ifdef LS1FSOC
-//			out = caclulatefreq(APB_CLK/1000,vga_mode[i].pclk);
-//			rt_kprintf("out=%x\n",out);
-			/*inner gpu dc logic fifo pll ctrl,must large then outclk*/
-//			*(volatile int *)0xbfd00414 = out+1;
-			/*output pix1 clock  pll ctrl*/
-//			*(volatile int *)0xbfd00410 = out;
-			/*output pix2 clock pll ctrl */
-//			*(volatile int *)0xbfd00424 = out;
-#else
-			caclulate_freq(APB_CLK/1000, vga_mode[i].pclk);
-#endif
-			break;
-		}
-	}
-
-	if (mode<0)
-	{
-		rt_kprintf("\n\n\nunsupported framebuffer resolution\n\n\n");
-		return;
-	}
-
-	DC_FB_CONFIG = 0x0;
-	DC_FB_CONFIG = 0x3; //	// framebuffer configuration RGB565
- 	DC_FB_BUFFER_ADDR0 = (rt_uint32_t)_rt_framebuffer - 0x80000000;
-	DC_FB_BUFFER_ADDR1 = (rt_uint32_t)_rt_framebuffer - 0x80000000;
-	DC_DITHER_CONFIG = 0x0;
-	DC_DITHER_TABLE_LOW = 0x0;
-	DC_DITHER_TABLE_HIGH = 0x0;
-	DC_PANEL_CONFIG = 0x80001311;
-	DC_PANEL_TIMING = 0x0;
-
-	DC_HDISPLAY = (vga_mode[mode].hfl<<16) | vga_mode[mode].hr;
-	DC_HSYNC = 0x40000000 | (vga_mode[mode].hse<<16) | vga_mode[mode].hss;
-	DC_VDISPLAY = (vga_mode[mode].vfl<<16) | vga_mode[mode].vr;
-	DC_VSYNC = 0x40000000 | (vga_mode[mode].vse<<16) | vga_mode[mode].vss;
-
-#if defined(CONFIG_VIDEO_32BPP)
-	DC_FB_CONFIG = 0x00100104;
-	DC_FB_BUFFER_STRIDE = FB_XSIZE*4;
-#elif defined(CONFIG_VIDEO_16BPP)
-	DC_FB_CONFIG = 0x00100103;
-	DC_FB_BUFFER_STRIDE = (FB_XSIZE*2+255)&(~255);
-#elif defined(CONFIG_VIDEO_15BPP)
-	DC_FB_CONFIG = 0x00100102;
-	DC_FB_BUFFER_STRIDE = FB_XSIZE*2;
-#elif defined(CONFIG_VIDEO_12BPP)
-	DC_FB_CONFIG = 0x00100101;
-	DC_FB_BUFFER_STRIDE = FB_XSIZE*2;
-#else  //640x480-32Bits
-	DC_FB_CONFIG = 0x00100104;
-	DC_FB_BUFFER_STRIDE = FB_XSIZE*4;
-#endif //32Bits
-
-#ifdef LS1GSOC
-	/*fix ls1g dc
-	 *first switch to tile mode
-	 *change origin register to 0
-	 *goback nomal mode
-	 */
-	{
-		val = DC_FB_CONFIG;
-		DC_FB_CONFIG = val | 0x10;
-		DC_FB_BUFFER_ORIGIN = 0;
-		DC_FB_BUFFER_ORIGIN;
-		rt_thread_delay(10);
-		DC_FB_CONFIG;
-		DC_FB_CONFIG = val;
-	}
-#endif
-
-	return RT_EOK;
-}
-
-static rt_err_t rt_dc_control(rt_device_t dev, rt_uint8_t cmd, void *args)
-{
-	switch (cmd)
-	{
-	case RTGRAPHIC_CTRL_RECT_UPDATE:
-		break;
-	case RTGRAPHIC_CTRL_POWERON:
-		break;
-	case RTGRAPHIC_CTRL_POWEROFF:
-		break;
-	case RTGRAPHIC_CTRL_GET_INFO:		
-		rt_memcpy(args, &_dc_info, sizeof(_dc_info));
-		break;
-	case RTGRAPHIC_CTRL_SET_MODE:
-		break;
-	}
-
-	return RT_EOK;
-}
-
-void rt_hw_dc_init(void)
-{
-	rt_device_t dc = rt_malloc(sizeof(struct rt_device));
-	if (dc == RT_NULL) 
-	{
-		rt_kprintf("dc == RT_NULL\n");
-		return; /* no memory yet */
-	}
-
-	_dc_info.bits_per_pixel = 16;
-	_dc_info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565P;
-	_dc_info.framebuffer = (rt_uint8_t*)HW_FB_ADDR;
-	_dc_info.width = FB_XSIZE;
-	_dc_info.height = FB_YSIZE;
-
-	/* init device structure */
-	dc->type = RT_Device_Class_Graphic;
-	dc->init = rt_dc_init;
-	dc->open = RT_NULL;
-	dc->close = RT_NULL;
-	dc->control = rt_dc_control;
-	dc->user_data = (void*)&_dc_info;
-	
-	/* register Display Controller device to RT-Thread */
-	rt_device_register(dc, "dc", RT_DEVICE_FLAG_RDWR);
-}
diff --git a/bsp/ls1bdev/display_controller.h b/bsp/ls1bdev/display_controller.h
deleted file mode 100644
index 85086daf3179d29fb91d2659096fd0a81d1f31c8..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/display_controller.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * File      : display_controller.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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
- * 2011-08-08     lgnq         first version for LS1B
- */
- 
-#ifndef __DISPLAY_CONTROLLER_H__
-#define __DISPLAY_CONTROLLER_H__
-
-#include <rtthread.h>
-#include "ls1b.h"
-
-#define DC_BASE					0xBC301240  //Display Controller
-
-/* Frame Buffer registers */
-#define DC_FB_CONFIG			__REG32(DC_BASE + 0x000)
-#define DC_FB_BUFFER_ADDR0		__REG32(DC_BASE + 0x020)
-#define DC_FB_BUFFER_STRIDE		__REG32(DC_BASE + 0x040)
-#define DC_FB_BUFFER_ORIGIN		__REG32(DC_BASE + 0x060)
-#define DC_DITHER_CONFIG		__REG32(DC_BASE + 0x120)
-#define DC_DITHER_TABLE_LOW		__REG32(DC_BASE + 0x140)
-#define DC_DITHER_TABLE_HIGH	__REG32(DC_BASE + 0x160)
-#define DC_PANEL_CONFIG			__REG32(DC_BASE + 0x180)
-#define DC_PANEL_TIMING			__REG32(DC_BASE + 0x1A0)
-#define DC_HDISPLAY				__REG32(DC_BASE + 0x1C0)
-#define DC_HSYNC				__REG32(DC_BASE + 0x1E0)
-#define DC_VDISPLAY				__REG32(DC_BASE + 0x240)
-#define DC_VSYNC				__REG32(DC_BASE + 0x260)
-#define DC_FB_BUFFER_ADDR1		__REG32(DC_BASE + 0x340)
-
-/* Display Controller driver for 1024x768 16bit */
-#define FB_XSIZE		1024
-#define FB_YSIZE		768
-#define CONFIG_VIDEO_16BPP
-
-#define APB_CLK 33333333
-
-#define K1BASE				0xA0000000
-#define KSEG1(addr)			((void *)(K1BASE | (rt_uint32_t)(addr)))
-#define HW_FB_ADDR			KSEG1(_rt_framebuffer)
-#define HW_FB_PIXEL(x, y)	*(volatile rt_uint16_t*)((rt_uint8_t*)HW_FB_ADDR + (y * FB_XSIZE * 2) + x * 2)
-
-struct vga_struct
-{
-	long pclk;
-	int hr,hss,hse,hfl;
-	int vr,vss,vse,vfl;
-};
-
-#endif
diff --git a/bsp/ls1bdev/drivers/board.c b/bsp/ls1bdev/drivers/board.c
index cea1fb5b56c7e36bc8b889c7eb2e49d647340ba4..06a985cf1babad2bb041d1e0e8e66d7c84494a40 100644
--- a/bsp/ls1bdev/drivers/board.c
+++ b/bsp/ls1bdev/drivers/board.c
@@ -1,7 +1,7 @@
 /*
  * File      : board.c
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, RT-Thread Develop Team
+ * 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
@@ -31,11 +31,11 @@
  */
 void rt_hw_timer_handler(void)
 {
-    unsigned int count;
+	unsigned int count;
 
-    count = read_c0_compare();
-    write_c0_compare(count);
-    write_c0_count(0);
+	count = read_c0_compare();
+	write_c0_compare(count);
+	write_c0_count(0);
 
 	/* increase a OS tick */
 	rt_tick_increase();
@@ -46,8 +46,8 @@ void rt_hw_timer_handler(void)
  */
 void rt_hw_timer_init(void)
 {
-    write_c0_compare(CPU_HZ/2/RT_TICK_PER_SECOND);
-    write_c0_count(0);
+	write_c0_compare(CPU_HZ/2/RT_TICK_PER_SECOND);
+	write_c0_count(0);
 }
 
 /**
@@ -80,7 +80,7 @@ void rt_hw_board_init(void)
 #define UARTLSR_PE		(1 << 2)
 #define UARTLSR_OE		(1 << 1)
 #define UARTLSR_DR		(1 << 0)
-void rt_hw_console_output(const char* ptr)
+void rt_hw_console_output(const char *ptr)
 {
 	/* stream mode */
 	while (*ptr)
diff --git a/bsp/ls1bdev/drivers/board.h b/bsp/ls1bdev/drivers/board.h
index 62481a2a450d7bdcaba91b13b8e09db0d8ebe4a7..9ba4f9f25c9407fd03eae9a4c7b394b9380576d2 100644
--- a/bsp/ls1bdev/drivers/board.h
+++ b/bsp/ls1bdev/drivers/board.h
@@ -1,7 +1,7 @@
 /*
  * File      : board.h
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, RT-Thread Develop Team
+ * 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
diff --git a/bsp/ls1bdev/drivers/display_controller.c b/bsp/ls1bdev/drivers/display_controller.c
index 511f2dbe0d685ed7009137c8401386b1737d0753..6002376c41112cb9fdbe306c27fd260e58735973 100644
--- a/bsp/ls1bdev/drivers/display_controller.c
+++ b/bsp/ls1bdev/drivers/display_controller.c
@@ -1,7 +1,7 @@
 /*
  * File      : display_controller.c
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, RT-Thread Develop Team
+ * 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
diff --git a/bsp/ls1bdev/drivers/display_controller.h b/bsp/ls1bdev/drivers/display_controller.h
index 85086daf3179d29fb91d2659096fd0a81d1f31c8..125ccef28f79d9d185a4c02f072bae63008c7f38 100644
--- a/bsp/ls1bdev/drivers/display_controller.h
+++ b/bsp/ls1bdev/drivers/display_controller.h
@@ -1,7 +1,7 @@
 /*
  * File      : display_controller.h
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, RT-Thread Develop Team
+ * 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
diff --git a/bsp/ls1bdev/drivers/uart.c b/bsp/ls1bdev/drivers/uart.c
index 71273fd59591d0a0fb8cc304e81e60c438e606ab..99af18d2af0b135792cc1c66c1f3602148a60424 100644
--- a/bsp/ls1bdev/drivers/uart.c
+++ b/bsp/ls1bdev/drivers/uart.c
@@ -41,7 +41,7 @@ static void rt_uart_irqhandler(int irqno)
 {
 	rt_ubase_t level;
 	rt_uint8_t isr;
-	struct rt_uart_ls1b* uart = &uart_device;
+	struct rt_uart_ls1b *uart = &uart_device;
 
 	/* read interrupt status and clear it */
 	isr = UART_IIR(uart->hw_base);
diff --git a/bsp/ls1bdev/drivers/uart.h b/bsp/ls1bdev/drivers/uart.h
index 763ba514bd60c3b892c156796d0a891383cefa37..218c99a98c5b14d050ebcd1bc0511bba84f2e88c 100644
--- a/bsp/ls1bdev/drivers/uart.h
+++ b/bsp/ls1bdev/drivers/uart.h
@@ -1,7 +1,7 @@
 /*
  * File      : uart.h
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, RT-Thread Develop Team
+ * 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
@@ -11,6 +11,7 @@
  * Date           Author       Notes
  * 2011-08-08     lgnq         first version for LS1B
  */
+
 #ifndef __UART_H__
 #define __UART_H__
 
diff --git a/bsp/ls1bdev/startup.c b/bsp/ls1bdev/startup.c
deleted file mode 100644
index 79cce389781e49a0aa4886dcbf80a36aa308a18f..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/startup.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * File      : startup.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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);
-
-/**
- * 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 */
-	memcpy((void *)A_K0BASE, tlb_refill_exception, 0x20);
-	memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x20);
-	memcpy((void *)(A_K0BASE + 0x200), irq_exception, 0x20);
-
-	/* init board */
-	rt_hw_board_init();
-	rt_show_version();
-
-	/* init tick */
-	rt_system_tick_init();
-
-	/* init timer system */
-	rt_system_timer_init();
-
-#ifdef RT_USING_HEAP
-	rt_system_heap_init((void*)&__bss_end, (void*)RT_HW_HEAP_END);
-#endif
-
-	/* init scheduler system */
-	rt_system_scheduler_init();
-
-#ifdef RT_USING_DEVICE
-	/* init all device */
-	rt_device_init_all();
-#endif
-
-	/* init application */
-	rt_application_init();
-
-#ifdef RT_USING_FINSH
-	/* init finsh */
-	finsh_system_init();
-	finsh_set_device(FINSH_DEVICE_NAME);
-#endif
-
-	/* init idle thread */
-	rt_thread_idle_init();
-
-	/* start scheduler */
-	rt_system_scheduler_start();
-
-	/* never reach here */
-	return ;
-}
-
-/*@}*/
diff --git a/bsp/ls1bdev/uart.c b/bsp/ls1bdev/uart.c
deleted file mode 100644
index 4c8d13d29864b1647c8d3ac008d803714c0240f2..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/uart.c
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * File      : board.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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
- * 2011-08-08     lgnq         first version
- */
-
-#include <rthw.h>
-#include <rtthread.h>
-
-#include "uart.h"
-
-/**
- * @addtogroup Loongson LS1B
- */
-
-/*@{*/
-#if defined(RT_USING_UART) && defined(RT_USING_DEVICE)
-
-struct rt_uart_ls1b
-{
-	struct rt_device parent;
-
-	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];
-}uart_device;
-
-static void rt_uart_irqhandler(int irqno)
-{
-	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;
-
-	if (isr & 0x02) /* receive data available */
-	{
-		/* 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);
-		}
-
-		/* 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);
-		}
-	}
-
-	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_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 */
-
-	/* 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;
-
-	UART_MSB(uart->hw_base) = (baud_div >> 8) & 0xff;
-	UART_LSB(uart->hw_base) = baud_div & 0xff;
-
-	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;
-#endif
-
-	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;
-
-	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);
-		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;
-
-	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;
-}
-
-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_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;
-
-			/* 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 */
-
-				/* enable interrupt */
-				rt_hw_interrupt_enable(level);
-				break;
-			}
-
-			/* enable interrupt */
-			rt_hw_interrupt_enable(level);
-
-			ptr ++;
-			size --;
-		}
-
-		return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
-	}
-
-	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;
-
-	RT_ASSERT(uart != RT_NULL);
-
-	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';
-			}
-
-			/* 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)));
-
-			/* write data */
-			UART_DAT(uart->hw_base) = *ptr;
-
-			ptr++;
-			size--;
-		}
-	}
-
-	return (rt_size_t) ptr - (rt_size_t) buffer;
-}
-
-void rt_hw_uart_init(void)
-{
-	struct rt_uart_ls1b* uart;
-
-	/* 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;
-	
-#if defined(RT_USING_UART0)
-	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;
-#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;
-
-	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/uart.h b/bsp/ls1bdev/uart.h
deleted file mode 100644
index 763ba514bd60c3b892c156796d0a891383cefa37..0000000000000000000000000000000000000000
--- a/bsp/ls1bdev/uart.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * File      : uart.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2011, 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
- * 2011-08-08     lgnq         first version for LS1B
- */
-#ifndef __UART_H__
-#define __UART_H__
-
-#include "ls1b.h"
-
-#define UART0_BASE			0xBFE40000
-#define UART0_1_BASE		0xBFE41000
-#define UART0_2_BASE		0xBFE42000
-#define UART0_3_BASE		0xBFE43000
-#define UART1_BASE			0xBFE44000
-#define UART1_1_BASE		0xBFE45000
-#define UART1_2_BASE		0xBFE46000
-#define UART1_3_BASE		0xBFE47000
-#define UART2_BASE			0xBFE48000
-#define UART3_BASE			0xBFE4C000
-#define UART4_BASE			0xBFE6C000
-#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_LSB(base)		__REG8(base + 0x00)
-#define UART_MSB(base)		__REG8(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_LSB			__REG8(UART0_BASE + 0x00)
-#define UART0_MSB			__REG8(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_LSB			__REG8(UART1_BASE + 0x00)
-#define UART1_MSB			__REG8(UART1_BASE + 0x01)
-
-/* UART interrupt enable register value */
-#define UARTIER_IME		(1 << 3)
-#define UARTIER_ILE		(1 << 2) 
-#define UARTIER_ITXE	(1 << 1)
-#define UARTIER_IRXE	(1 << 0)
-
-/* UART line control register value */
-#define UARTLCR_DLAB	(1 << 7)
-#define UARTLCR_BCB		(1 << 6)
-#define UARTLCR_SPB		(1 << 5)
-#define UARTLCR_EPS		(1 << 4)
-#define UARTLCR_PE		(1 << 3)
-#define UARTLCR_SB		(1 << 2)
-
-/* 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_uart_init(void);
-
-#endif