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如何自己实现一个Bootloader?

自定义Bootloader:上电从Flash启动,先进入boot,校验,不需要升级,跳转app,需要升级停留boot等待固件下发。在app内可通过指令跳转boot。

Questions:

假设boot和app分别2个工程

1、cmd文件,分别该怎么写?

(只要代码入口地址不一致就行?)

2、如何实现boot和app之间的相互跳转?

(直接用LB指令?LB跳转之后运行环境是否从新初始化,运行是否正常)