I realize I’m asking below about u-boot, but I’m really trying to better understand how initrd should work with device trees.  I have also posted a question to the u-boot user group.

 

When I build the device tree blob into the kernel image and load the kernel image with my probe, it finds the initrd fine just using root=/dev/ram and with the kernel configured properly.

 

With the same kernel configuration, when I run with u-boot, the only way for the kernel to find the initrd is to put linux,initrd-start and initrd-end in my device tree. I found these items in an old patch from David Gibson and I’m not sure if or when they should be used.

 

I also notice in booting-without-of.txt, off_mem_rsvmap, but it’s not clear if and how I should be using it to help the problem.

 

Thanks,

John

 

 


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