在zed的PS端运行spark（已成功）：
（1）设置uboot为sd卡启动rootfs：
"sdboot=if mmcinfo; then " \
"run uenvboot; " \
"echo Copying Linux from SD to RAM... && " \
"fatload mmc 0 0x3000000 ${kernel_image} && " \
"fatload mmc 0 0x2A00000 ${devicetree_image} && " \
"bootm 0x3000000 - 0x2A00000; " \
"fi\0" \
如果想从zImage启动，修改 include/configs/zynq_common.h 的sdboot 内容：
"sdboot=echo (modified) Copying Linux from SD to RAM... && " \
"mmcinfo && " \
"fatload mmc 0 0x8000 zImage && " \
"fatload mmc 0 0x2A00000 ${devicetree_image} && " \
"bootz 0x8000 - 0x2A00000\0" \
（2）devicetree.dts修改启动参数：
bootargs = "console=ttyPS0,115200 root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=0";
参考网站http://www.wiki.xilinx.com/Ubuntu+on+Zynq
（3）下载Uboot的rootfs镜像：
（4）配置ip地址：
vi /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
设置网络地址生效：
/etc/init.d/networking restart
自动获取ip地址
dhclient eth0
（5）安装Java
/* wrong 1
apt-get install python-software-properties
遇到add-apt-repository: command not found的错误请参考以下链接。
（http://www.thelinuxguy.nl/how-tos/how-to-fix-sudo-add-apt-repository-command-not-found-linux/）
apt-get install software-properties-common
add-apt-repository ppa:webupd8team/java
apt-get update
apt-get install oracle-java7-installer
*/
/* wrong 2 此方法在后面sbt/sbt assembly会出错
apt-cache search jdk
apt-get install openjdk-7-jdk
vi ~/.bashrc
JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-armhf/
JRE_HOME=${JAVA_HOME}/jre
export ANDROID_JAVA_HOME=$JAVA_HOME
export CLASSPATH=.:${JAVA_HOME}/lib:$JRE_HOME/lib:$CLASSPATH
export JAVA_PATH=${JAVA_HOME}/bin:${JRE_HOME}/bin
export JAVA_HOME;
export JRE_HOME;
export CLASSPATH;
HOME_BIN=~/bin/
export PATH=${PATH}:${JAVA_PATH}:${HOME_BIN};
*/
方法2：下载jdkforarm
http://www.oracle.com/technetwork/java/javase/downloads/jdk7-arm-downloads-2187468.html
如果需要下载以前的版本：
http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html
JAVA_HOME=/root/jdk1.7.0_60
export PATH=${JAVA_HOME}/bin:$PATH
(6)安装hadoop:
wget http://mirror.nus.edu.sg/apache/hadoop/common/hadoop-2.4.0/hadoop-2.4.0.tar.gz
tar zxvf hadoop-2.4.0.tar.gz
export PATH=/root/hadoop-2.4.0/bin:$PATH
(7)安装Scala
wget http://www.scala-lang.org/files/archive/scala-2.9.3.tgz
tar zxvf scala-2.10.4.tgz
mv scala-2.10.4 /usr/share/scala
ln -s /usr/share/scala/bin/scala /usr/bin/scala
ln -s /usr/share/scala/bin/scalac /usr/bin/scalac
ln -s /usr/share/scala/bin/fsc /usr/bin/fsc
(8)安装Spark
wget http://d3kbcqa49mib13.cloudfront.net/spark-0.9.1-bin-hadoop2.tgz
tar zxvf spark-0.9.1-bin-hadoop2.tgz
cd spark-0.9.1-bin-hadoop2
sbt/sbt assembly
(注意这条命令后面不能有一杠，注意墙）
（这条命令如果失败似乎问题不大）
(9)测试
examples：http://spark.apache.org/examples.html
from random import random
def sample(p):
x, y = random(), random()
return 1 if x*x + y*y < 1 else 0
count = sc.parallelize(xrange(0, 1000)).map(sample) \
.reduce(lambda a, b: a + b)
print "Pi is roughly %f" % (4.0 * count / 1000)
如果开发板处于广域网，而且没有配置localhost机器名， 则会遇到此错误
拔掉网线再测试：
配置机器名字：
成功启动界面：
成功测试界面：
