iTOP-4412开发板使用
使用环境：win7 旗舰64位，VMware11 使用使用板上提供的ubuntu12.04，用VMWARE直接打开虚拟机，因为之前开发epc9600开发板，所以虚拟机网络已经设置过，加载ubuntu12.04后发现可直接联网.
交叉编译工具链已经存放在/usr/local/arm/arm-2009q3/bin，而且在/root/.bashrc里已经export PATH=$PATH:/usr/local/arm/arm-2009q3/bin，且export PATH=$PATH:/usr/local/ndk/android-ndk-r8b，但没起作用要source .bashrc，这样每次登陆root用户都要cd /root , source .bashrc
改变方法，vi /home/topeet/.bahsrc
添加export PATH=$PATH:/usr/local/arm/arm-2009q3/bin export PATH=$PATH:/usr/local/ndk/android-ndk-r8b
这样只要登录root用户，环境变量自动就好了。
可以发现/root/.bashrc最后还有两行
#export PATH=$PATH:/usr/local/arm/4.4.1/bin
#export PATH=$PATH:/usr/local/arm/4.3.2/libexec/gcc，都被注释掉了。正两行都是添加环境变量的，但这两行添加的交叉编译器名称和/usr/local/arm/arm-2009q3/bin里的是一样的，不能同时生效，应该是切换工具链时使用
参照ubuntu14.04.32 vmware11开发环境搭建 http://www.cnblogs.com/cenglinjinran/p/4583784.html 安装vmware tools
sudo apt-get update
sudo apt-get install nfs-kernel-server
升级linux内核到3.5？？？？？？？？？？？？？？？？升级不成功，内核不断自重启，返回3.0
但原本的3.0镜像不支持nfs，需要重新编译内核使他支持nfs文件挂载，重新配置内核，开启nfs后成功。
使用buildroot重新烧写根文件系统
1、配置编译buildroot，生成 /opt/share/buildroot-2014.05/output/image/root.tar。
开发板自带的根文件系统解压至/Linux+QT/root.b/，
rm -rf /opt/share/root/*
tar -xvf /opt/share/buildroot-2014.05/output/images/rootfs.tar -C /opt/share/root
rm /opt/share/root/dev/console
cp -rf /opt/share/root.b/etc/firmware/ /opt/share/root/etc/
cp /opt/share/root.b/etc/rc.d/init.d/netd /opt/share/root/etc/
cp /opt/share/root.b/etc/eth0-setting /opt/share/root/etc/
cp /opt/share/root.b/etc/init.d/ifconfig-eth0 /opt/share/root/etc/init.d/
cp /opt/share/root.b/etc/inetd.conf /opt/share/root/etc/
cp /mnt/hgfs/soft/epc9600/wqy-microhei.ttf /opt/share/root/usr/lib/fonts
vi /opt/share/root/etc/init.d/rcS
将原根文件系统各文件/etc/init.d/rcS 文件中的下列部分添加到新生成的文件系统etc/init.d/rcS最后。
umask 022
trap ":" INT QUIT TSTP
[ -e /proc/1 ] || /bin/mount -n -t proc none /proc
[ -e /sys/class ] || /bin/mount -n -t sysfs none /sys
[ -e /dev/tty ] || /bin/mount -t ramfs none /dev
/sbin/mdev -s
# mounting file system specified in /etc/fstab
mkdir -p /dev/pts
mkdir -p /dev/shm
/bin/mount -n -t devpts none /dev/pts -o mode=0622
/bin/mount -n -t tmpfs tmpfs /dev/shm
/bin/mount -n -t ramfs none /tmp
/bin/mount -n -t ramfs none /var
mkdir -p /var/log
mkdir -p /var/www
mkdir -p /var/run
mkdir -p /var/lib/lighttpd
ln -sf /dev/ttyS2 /dev/tty2
ln -sf /dev/ttyS2 /dev/tty3
ln -sf /dev/ttyS2 /dev/tty4
amixer cset numid=5 127
amixer cset numid=6 1
amixer cset numid=30 8,0
amixer cset numid=40 1
amixer cset numid=43 1
amixer cset numid=47 1
syslogd
/etc/netd start
echo "*************************************" > /dev/ttySAC2
echo " http://www.gainuo.com " > /dev/ttySAC2
echo "*************************************" > /dev/ttySAC2
sleep 2
/etc/firmware/load_firmware
/sbin/ifconfig lo 127.0.0.1
/etc/init.d/ifconfig-eth0
echo 0 > /proc/sys/kernel/hung_task_timeout_secs
echo "Starting Qt, please waiting..." > /dev/ttySAC2
#configure tslib1.1
export TSLIB_ROOT=/
export TSLIB_TSDEVICE=/dev/input/event2
export TSLIB_TSEVENTTYPE=input
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_CONSOLEDEVICE=none
export TSLIB_FBDEVICE=/dev/fb0
export QT_QWS_FONTDIR=/usr/lib/fonts
if [ -c /dev/input/event2 ]; then
export QWS_MOUSE_PROTO='Tslib:/dev/input/event2'
if [ -e /etc/pointercal ] ; then
fsize=$(/bin/ls -al /etc/pointercal | cut -d' ' -f 23)
echo $fsize
if [ $fsize -ge "1" ]; then
echo "/etc/pointercal is exit"
else
echo "/etc/pointercal is empty"
rm /etc/pointercal
/usr/bin/ts_calibrate
fi
else
echo "/etc/pointercal not found"
/usr/bin/ts_calibrate
fi
else
export QWS_MOUSE_PROTO="MouseMan:/dev/input/mice"
#>/etc/pointercal
fi
export HOME=/root
cd /usr/share/qt/demos/embedded/fluidlauncher
./fluidlauncher -qws &
cd ~/
mount -t nfs 192.168.1.57:/opt/share /mnt/ -o nolock
#must run this shell
/bin/sh
echo > /opt/share/root/etc/init.d/ifconfig-eth0
echo nameserver 192.168.1.1 > /opt/share/root/etc/resolv.conf
2、cd /home/topeet/Linux+QT make_ext4fs -s -l 314572800 -a root -L linux system.img root 生成根文件镜像
3、烧录镜像到开发板，进入uboot命令行，sdfuse flash system system.img，reset。