Stuck in uboot because of serial data input

General Discussions
1

I’m experiencing a problem
it looks that data coming from external device on serial0 is causing uboot to exit standard autoboot and interrupting the wall boot
as u boot for converted mender images looks modded for mender can you please help me to set up silent boot with no boot delay in order to avoid waiting for for data on console for exiting boot sequence as explain here https://raspberrypi.stackexchange.com/a/117951
at least just say me where I can find the mender modded Uboot repo in order to add my config inside and recompile it
thanks a lot for you help

2

Hi @profff our u-boot fork is here.

Drew

3

On a RPI2, I solved the uboot issue when an external device is connected on serial0 with :

fw_setenv stdin nulldev
fw_setenv stderr vidconsole
fw_setenv stdout vidconsole
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4

@schrein Sorry to resurrect an old topic but where did you put this? I’m trying to add it to a Yocto build by adding it to MENDER_UBOOT_PRE_SETUP_COMMANDS but that doesn’t seem to stick.

5

Hello @sieger,

sorry, I just ran the fw_setenv command from the booted linux on the device. It’s was just needed for one device, i did not investigate how to fix RPI uboot inside Yocto recipe.

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