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大多数的内核里面都有会对GPIO的操作，而且内核里面对GPIO进行配置也很方便，要什么功能就配置成什么就可以了。还有一些寄存器是内核没有配置到的，但是我们要操作怎么办，内核里面也定义了相关的接口函数。在u-boot中操作某个寄存器： [cpp] view plain&nb...

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版本：v1.2 Crifan Li 摘要本文主要介绍了如何在嵌入式Linux系统运行的时候，进行升级整个Linux系统，包括uboot，kernel和rootfs。以及简介Linux中的已有的通用的Nor Flash驱动m25p80，和简介mtd util以及相关工具mtd...

linux基础之uboot load address、entry point、 bootm address以及kernel运行地址的意义及联系

按各地址起作用的顺序，uboot引导linux内核启动涉及到以下地址： load address： entry point：这两个地址是mkimage时指定的 bootm address：bootm为uboot的一个命令，以此从address启动kernel kernel运行地址：在具体mach目...

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