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1 从三星官方uboot开始移植
2.11.1
移植前的准备工作。
2.11.2 ubuntu14.04上网及安装openssh
1 网络配置文件 /etc/network/interface 文件,配置网卡信息(ip 是静态ip还是dhcp)
2 ubuntu 14.04中,重启网卡ifdown eth0 / ifup eth0
2.11.3 移植初体验
1 解压
2 检查Makefile中的交叉编译工具链是否正确。
3 配置时使用: make smdkv210single_config, 对应include/configs/smdkv210single.h
4 配置完成后直接make编译,编译完成后就进入烧录步骤。
5 uboot/sd_fusing目录下有个sd_fusing.sh脚本,用来烧录。
命令:file filename
6 运行结果是:1、串口无输出; 第二,开发板供电锁存成功
分析运行结果:uboo中串口最早的输出在"OK",在lowlevel_init.S中初始化串口时打印出来的;
串口无输出"O"说明在打印"OK"之前已经死掉了;开发板供电锁存在lolevel_init.S中,开发板
供电锁存成功说明在这个代码之前的部分是没问题的。两个结合起来得到结论:错误在开发板供电锁存代码
和串口初始化打印"OK"代码之间。
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