How to enter into Uboot cmd UI

[tony_l_cai]

Hi，All

     Now I want to use imxotp，but before using it，I should enter into the uboot cmd UI，and I dont know how to enter it. Some info told me,when I loaded the uboot via the mfg tool and then uboot cmd UI would show up after the  uart was started automatically.

     But all of these didnt happen. So I want to know the steps how to do after load uboot in detail. and more importantly, what I used is our customized board. So please help me!

[dry]

Hit any key to stop autoboot:  0  <-- Do you see it counting at this stage ( I think default is 3 secs), or not?

If yes, you should be able to hit a key at this stage and autoboot is interrupted and you *should* get the u-boot shell.

If it's not counting then this wait delay must be disabled, and you can enable it and rebuild u-boot and upload it.

[dry]

Also check this link, for modifying u-boot from linux.  (if your distro does not have it built already..)

http://linuxforengineers.blogspot.com/2012/12/modify-u-boot-configuration-in-linux.html

[dry · Accepted solution]

By u-boot cmd UI you mean the u-boot command prompt / shell?

Do you see u-boot traces while the board is booting, like:

U-Boot 2011.12 (Jan 16 2015 - 09:22:38)

......

Hit any key to stop autoboot:  0

Using ...

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