用USB方式烧写ARM板[转]

来源 http://www.linuxeden.com/html/softuse/20090906/67840.html

一直在寻找GNU/Linux的工作、生活方式，Linux下的嵌入式开发也一样

用vivi烧写root文件系统时，如果通过mincom的xmodem串口传输方式，16M要用大约3个半钟
后来为了提高效率，找到了这个USB方式烧写软件DNW，16M文件系统的烧写只需1分多钟

下载dnw_linux.rar

解压后的编译过程如下

$ cd dnw_linux/
$ ls
dnw  secbulk
$ cd dnw/
$ ls
dnw.c

编译dnw烧写程序

$ gcc dnw.c -o dnw
$ ls
dnw  dnw.c
$ sudo cp dnw /usr/local/bin/
$ cd ..
$ cd secbulk/
$ ls
Makefile  secbulk.c

编译dnw相应的内核模块

$ make -C /lib/modules/`uname -r`/build M=`pwd` modules
make: Entering directory `/usr/src/linux-headers-2.6.26-2-686'
CC [M]  /home/c-aries/下载/dnw_linux/secbulk/secbulk.o
/home/c-aries/下载/dnw_linux/secbulk/secbulk.c: In function ‘secbulk_write’:
/home/c-aries/下载/dnw_linux/secbulk/secbulk.c:58: warning: comparison of distinct pointer types lacks a cast
Building modules, stage 2.
MODPOST 1 modules
CC      /home/c-aries/下载/dnw_linux/secbulk/secbulk.mod.o
LD [M]  /home/c-aries/下载/dnw_linux/secbulk/secbulk.ko
make: Leaving directory `/usr/src/linux-headers-2.6.26-2-686'
$

上一步如编译出错，可能是相应的内核头文件尚未安装
Debian系统下，可运行如下命令解决
$ uname -r
2.6.26-2-686
$ sudo apt-get install linux-headers-2.6.26-2-686

注册内核模块

$ sudo insmod secbulk.ko
$ dmesg | tail -1
[33298.895244] usbcore: registered new interface driver secbulk
$

dmesg输出说明secbulk模块已安装成功（重启系统会失效）

使用dnw

在minicom中输入烧写root文件系统的命令

vivi > load flash root u                                               
USB host is connected. Waiting a download.

提示等待usb方式烧写

打开另一个虚拟终端，烧入当前目录中的rootfs.yaffs(dnw已被)

$ sudo dnw rootfs.yaffs
file name : rootfs.yaffs
file size : 4515456 bytes
Writing data...
100% 4515466 bytes     OK
$

另一个终端显示

vivi > load flash root u                                                 
USB host is connected. Waiting a download.                                     

Now, Downloading [ADDRESS:30000000h,TOTAL:4515466]                             
RECEIVED FILE SIZE: 4515466 (489KB/S, 9S)                                      
Downloaded file at 0x30000000, size = 4515456 bytes                            
Found block size = 0x00450000                                                  
Erasing...    ... done                                                         
Writing...    ... done                                                         
Written 4515456 bytes                                                          
vivi >

root文件系统，usb方式烧写成功