你好:
从SD卡启动到尝试EMMC启动过程中,SD卡uboot中的uEnv.txt如何烧写到emmc。

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请看下面e2e工程师的回复。
uEnv.txt is for MMC SD card boot only.
There's an earlier e2e post on "saveenv" to eMMC on AM57xx device.
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/913291/am5718-saveenv-error-when-booting-emmc
Will you have a look at it to see if it helps on your setup