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关于uboot下调用nand erase命令时,串口答应百分比动态显示的实现?



在擦除的过程中,上面红框的百分比动态显示擦除的百分比,请问这个是在那个文件里面实现的?还有就是烧写时是否也可以显示动态烧入的百分比?