准备:首先在你的Linux上确定nfs挂载没问题,然后设置好你要挂载nfs的目录,我的设置如下:/opt/EmbedSky/root_nfs *(rw,sync,no_root_squash)其次,你要把TQ2440制作的根文件系统root_qtopia_2.2.0_2.6.30.4_20100601.tar.bz2解压到root_nfs目录下(如果高手的话,自己制作根目录也行)。TQ2440制作的根文件系统要修改一个地方,修改文件系统/etc/init.d/rcS #net_set & //注释掉1.OK,接下来要弄开发板了,首先连接好开发板,接上电源,然后把开发板拨到nfs启动。通过超级终端可以看到下面内容:##### EmbedSky BIOS for SKY2440/TQ2440 ##### Press Space key to Download Mode !##### Boot for Nor Flash Main Menu ##### ##### EmbedSky USB download mode ##### [1] Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash [2] Download Eboot (eboot.nb0) to Nand Flash [3] Download Linux Kernel (zImage.bin) to Nand Flash [5] Download CRAMFS image to Nand Flash [6] Download YAFFS image (root.bin) to Nand Flash [7] Download Program (uCOS-II or TQ2440_Test) to SDRAM and Run it [8] Boot the system [9] Format the Nand Flash [0] Set the boot parameters [a] Download User Program (eg: uCOS-II or TQ2440_Test) [b] Download LOGO Picture (.bin) to Nand Flash [l] Set LCD Parameters [n] Enter TFTP download mode menu [o] Download u-boot to Nor Flash [r] Reboot u-boot [t] Test Linux Image (zImage) [q] quit from menu Enter your selection:2.接着我们选择0,设置启动参数。按0选项后,进入如下:##### Parameter Menu ##### [1] Set NFS boot parameter [2] Set Yaffs boot parameter [3] Set parameter [4] View the parameters [d] Delete parameter [s] Save the parameters to Nand Flash [q] Return main Menu Enter your selection: 我们选1,进入NFS参数设置。设置内容如下:Enter your selection: 1 Enter the PC IP address:(xxx.xxx.xxx.xxx) 192.168.1.133 //你的linux上的IP Enter the SKY2440/TQ2440 IP address:(xxx.xxx.xxx.xxx) 192.168.1.6 //你的开发板IP Enter the Mask IP address:(xxx.xxx.xxx.xxx) 255.255.255.0 //子网掩码 Enter NFS directory:(eg: /opt/EmbedSky/root_nfs) /opt/EmbedSky/root_nfs //你的linux上设置的nfs挂载目录 然手确定,选s保存,然后再选q退出。接着按8启动系统。呵呵,接着你就可以看到系统进入一个你熟悉的界面了。-------------------------注意问题:1.首先要确定能ping的通;2.确定nfs有启动;3.确定nfs挂载的目录没写错。