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SD卡功能不正常



Boot mode is booting via SD card. 但是开机成功执行MLO之后,不能执行app,即通过串口显示是这样的: StarterWareAm335x Boot Loader Copying application image from MMC/SD card to RAM Jumping to StarterWare Application... 感觉跟SD相关的就只是ARM芯片和内存芯片,可是这两个芯片都换过,结果还是一样的。就是想不通,为什么能够执行MLO,就不能执行app呢。 注:软件是没有问题的,因为用同样的软件成功执行过。就是不知电路板有什么问题了,使得出现这样的情况。