diff --git a/Makefile b/Makefile
index 7aab53b..44fe1e6 100644
--- a/Makefile
+++ b/Makefile
@@ -43,10 +43,10 @@ KERNEL_HEADERS_PACKAGE=$(KERNEL_HEADERS_VER).tar.bz2
 KERNEL_HEADERS_URL=
 
 # for the device stage
-FLASH_TOOL_PATH = ./flash-tool
+FLASH_TOOL_PATH = ./inflash
 FLASH_TOOL_BIN_PATH = $(FLASH_TOOL_PATH)/bin
-STAGE1_PATH = $(FLASH_TOOL_PATH)/device_stage1
-STAGE2_PATH = $(FLASH_TOOL_PATH)/device_stage2
+STAGE1_PATH = $(FLASH_TOOL_PATH)/xburst_stage1
+STAGE2_PATH = $(FLASH_TOOL_PATH)/xburst_stage2
 CROSS_COMPILE ?= mipsel-linux-
 
 CFLAGS="-O2"
@@ -155,8 +155,8 @@ kernel:
 	make uImage
 
 ### flash-boot
-.PHONY: flash-tool
-flash-tool: stage1 stage2
+.PHONY: inflash
+inflash: stage1 stage2
 	mkdir -p $(FLASH_TOOL_BIN_PATH)
 	cp $(FLASH_TOOL_PATH)/src/usb_boot.cfg $(FLASH_TOOL_BIN_PATH)
 	cd $(FLASH_TOOL_PATH) && \
@@ -172,10 +172,14 @@ stage2:
 	make CROSS_COMPILE=$(CROSS_COMPILE) -C $(STAGE2_PATH)
 
 ### clean up
-distclean: clean clean-toolchain
+distclean: clean clean-inflash clean-toolchain
 
 clean:
-	make clean -C flash-tool
+
+clean-inflash:
+	make clean CROSS_COMPILE=$(CROSS_COMPILE) -C $(STAGE1_PATH)
+	make clean CROSS_COMPILE=$(CROSS_COMPILE) -C $(STAGE2_PATH)
+	make clean -C $(FLASH_TOOL_PATH)
 
 clean-toolchain: clean-glibc
 	rm -rf $(TOOLCHAIN_PATH)/$(BINUTILS_VER) binutils
diff --git a/README b/README
index f3c1d55..f11b5ee 100644
--- a/README
+++ b/README
@@ -41,3 +41,8 @@ The Jz4740 also has an IPU which has the following features:
     * Video frame resize
     * Color space conversion: 420/444/422 YUV to RGB convert 
 
+=debian package=
+1. run 'dh_make'
+2. edit the file under 'debian' folder (create by 'dh_make')
+3. run 'dpkg-buildpackage -rfakeroot' to create the deb package and source 
+   package
diff --git a/inflash/src/ingenic_usb.h b/inflash/src/ingenic_usb.h
index 60ef9c9..e9da70e 100644
--- a/inflash/src/ingenic_usb.h
+++ b/inflash/src/ingenic_usb.h
@@ -47,8 +47,8 @@
 #define VENDOR_ID	0x601a
 #define PRODUCT_ID	0x4740
 
-#define STAGE1_FILE_PATH "/usr/share/inflash/fw.bin"
-#define STAGE2_FILE_PATH "/usr/share/inflash/usb_boot.bin"
+#define STAGE1_FILE_PATH "/usr/share/inflash/xburst_stage1.bin"
+#define STAGE2_FILE_PATH "/usr/share/inflash/xburst_stage2.bin"
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
 
diff --git a/inflash/xburst_include/jz4740.h b/inflash/xburst_include/jz4740.h
index fbc26f3..27697a2 100644
--- a/inflash/xburst_include/jz4740.h
+++ b/inflash/xburst_include/jz4740.h
@@ -18,15 +18,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA  02110-1301, USA
  */
-
 #ifndef __JZ4740_H__
 #define __JZ4740_H__
 
-typedef unsigned int size_t;
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-
+#include "typedef.h"
 
 #ifndef __ASSEMBLY__
 #define UCOS_CSP 0
@@ -4864,7 +4859,6 @@ do{                                 \
       (REG_RTC_HSPR = n );        \
 }while(0)
 
-
 #endif /* !__ASSEMBLY__ */
 
 #endif /* __JZ4740_H__ */
diff --git a/inflash/xburst_include/jz4750.h b/inflash/xburst_include/jz4750.h
index b43c6b6..aa6815b 100755
--- a/inflash/xburst_include/jz4750.h
+++ b/inflash/xburst_include/jz4750.h
@@ -22,13 +22,11 @@
 #ifndef __JZ4750_H__
 #define __JZ4750_H__
 
+#include "typedef.h"
+
 #ifndef __ASSEMBLY__
 #define UCOS_CSP 0
 
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-
 #if 0
 #if UCOS_CSP
 #define __KERNEL__
diff --git a/inflash/xburst_include/nandflash.h b/inflash/xburst_include/nandflash.h
index 4468386..1fe9fe3 100644
--- a/inflash/xburst_include/nandflash.h
+++ b/inflash/xburst_include/nandflash.h
@@ -1,65 +1,63 @@
-/*
- * Copyright (C) 2009 PI
- * Author:  Xiangfu Liu <xiangfu.z@gmail.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 3 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA  02110-1301, USA
- */
-#ifndef __NANDLIB_H__
-#define __NANDLIB_H__
-
-#ifndef NULL
-#define NULL	0
-#endif
-
-#define u8	unsigned char
-#define u16	unsigned short
-#define u32	unsigned int
-
-/*  Jz4740 nandflash interface */
-unsigned int nand_query_4740(u8 *);
-int nand_init_4740(int bus_width, int row_cycle, int page_size, int page_per_block,
-		   int,int,int,int);
-int nand_fini_4740(void);
-u32 nand_program_4740(void *context, int spage, int pages, int option);
-//int nand_program_oob_4740(void *context, int spage, int pages, void (*notify)(int));
-u32 nand_erase_4740(int blk_num, int sblk, int force);
-u32 nand_read_4740(void *buf, u32 startpage, u32 pagenum,int option);
-u32 nand_read_oob_4740(void *buf, u32 startpage, u32 pagenum);
-u32 nand_read_raw_4740(void *buf, u32 startpage, u32 pagenum,int);
-u32 nand_mark_bad_4740(int bad);
-void nand_enable_4740(u32 csn);
-void nand_disable_4740(u32 csn);
-
-/*  Jz4750 nandflash interface */
-unsigned int nand_query_4750(u8 *);
-//int nand_init_4750(int bus_width, int row_cycle, int page_size, int page_per_block,
-//		   int,int,int,int);
-
-int nand_init_4750(int bus_width, int row_cycle, int page_size, int page_per_block,
-		   int bch_bit, int ecc_pos, int bad_pos, int bad_page, int force);
-
-int nand_fini_4750(void);
-u32 nand_program_4750(void *context, int spage, int pages, int option);
-//int nand_program_oob_4740(void *context, int spage, int pages, void (*notify)(int));
-u32 nand_erase_4750(int blk_num, int sblk, int force);
-u32 nand_read_4750(void *buf, u32 startpage, u32 pagenum,int option);
-u32 nand_read_oob_4750(void *buf, u32 startpage, u32 pagenum);
-u32 nand_read_raw_4750(void *buf, u32 startpage, u32 pagenum,int);
-u32 nand_mark_bad_4750(int bad);
-
-void nand_enable_4750(u32 csn);
-void nand_disable_4750(u32 csn);
-
-#endif
+/*
+ * Copyright (C) 2009 PI
+ * Author:  Xiangfu Liu <xiangfu.z@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 3 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA
+ */
+#ifndef __NANDLIB_H__
+#define __NANDLIB_H__
+
+#include "typedef.h"
+
+#ifndef NULL
+#define NULL	0
+#endif
+
+/*  Jz4740 nandflash interface */
+unsigned int nand_query_4740(u8 *);
+int nand_init_4740(int bus_width, int row_cycle, int page_size, int page_per_block,
+		   int,int,int,int);
+int nand_fini_4740(void);
+u32 nand_program_4740(void *context, int spage, int pages, int option);
+//int nand_program_oob_4740(void *context, int spage, int pages, void (*notify)(int));
+u32 nand_erase_4740(int blk_num, int sblk, int force);
+u32 nand_read_4740(void *buf, u32 startpage, u32 pagenum,int option);
+u32 nand_read_oob_4740(void *buf, u32 startpage, u32 pagenum);
+u32 nand_read_raw_4740(void *buf, u32 startpage, u32 pagenum,int);
+u32 nand_mark_bad_4740(int bad);
+void nand_enable_4740(u32 csn);
+void nand_disable_4740(u32 csn);
+
+/*  Jz4750 nandflash interface */
+unsigned int nand_query_4750(u8 *);
+//int nand_init_4750(int bus_width, int row_cycle, int page_size, int page_per_block,
+//		   int,int,int,int);
+
+int nand_init_4750(int bus_width, int row_cycle, int page_size, int page_per_block,
+		   int bch_bit, int ecc_pos, int bad_pos, int bad_page, int force);
+
+int nand_fini_4750(void);
+u32 nand_program_4750(void *context, int spage, int pages, int option);
+//int nand_program_oob_4740(void *context, int spage, int pages, void (*notify)(int));
+u32 nand_erase_4750(int blk_num, int sblk, int force);
+u32 nand_read_4750(void *buf, u32 startpage, u32 pagenum,int option);
+u32 nand_read_oob_4750(void *buf, u32 startpage, u32 pagenum);
+u32 nand_read_raw_4750(void *buf, u32 startpage, u32 pagenum,int);
+u32 nand_mark_bad_4750(int bad);
+
+void nand_enable_4750(u32 csn);
+void nand_disable_4750(u32 csn);
+
+#endif