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I have a yocto build for "imx6dl" system, after installing some software ( database/java ) system went into infinite loop during boot : "Usage :ps ps: invalid option --'x' ..." "

I'd like to change run level to "safe mode" in u-boot ( denx ) so I can better diagnose what is causing this, I believe current run level is 5.

How do I change runlevel in uboot ?

Thanks, Ran

user3087632
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  • Hi, I'm not sure if this might help You, but Yocto have mechanism that allows You to run some function while build system has created -http://www.yoctoproject.org/docs/2.4/mega-manual/mega-manual.html#var-ROOTFS_POSTPROCESS_COMMAND . – lukaszgard Oct 31 '17 at 06:43

1 Answers1

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In u-boot, you can change kernel arguments by overriding bootargs variable: 

setenv bootargs '.... 3'

You can pass kernel runlevel by appending its number, for example 3. Then you launch kernel, i.e. 

bootm

Hope it helps

Nayfe
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