IMX6 u-boot argument overwriting

[jasonl]

Hello there,

I am making a custom image with ext4 format. However, the default u-boot argument in the emmc is: "sdargs rootfstype=ext3". Is there anyway can overwrite the u-boot argument from sd card like the uEnv.txt, but not touching the u-boot?

Thanks,

Jason

[Yuri · Accepted solution]

Hello,

  You may add  / modify U-boot boot environment variables, using U-boot command setenv.

Please look at "i.MX_Linux_User's_Guide.pdf" in NXP Linux documentation for examples.

https://www.nxp.com/webapp/Download?colCode=L4.9.11_1.0.0_LINUX_DOCS 

i.MX 6 / i.MX 7 Series Software and Development Tool|NXP 

Have a great day,
Yuri

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