Hi Bordon,
Yes, You can change the command line in the u-boot command in the u-boot source code. When the u-boot boot up, you do not need to configure the u-boot command again. Here you can go to the u-boot source code, the command setting is in the /u-boot-ijmx/2015.04-r0/git/include/configs/mx6sabresd.h. You can try. I have tried the setting in the L3.0.35_4.1.0_130816_source version BSP, it works well. About the new BSP, you can try. And then you can tell me the result. And I will also try it.
Have a great day,
Rita
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