recommended method of netbooting kernel/dtb in u-boot?

Kumar Gala galak at kernel.crashing.org
Fri Apr 12 04:12:50 EST 2013


On Apr 11, 2013, at 10:44 AM, Chris Friesen wrote:

> 
> Hi all,
> 
> We've got a powerpc system that uses u-boot.  In our environment on bootup u-boot does a DHCP to get networking info, then uses TFTP to get the kernel, which then does DHCP again and NFS-mounts the initial root filesystem.
> 
> What's the standard practice for this sort of thing when using device tree blobs?  Do most people use multi-file images or do they TFTP scripts to load and execute separate kernel/dtb files?
> 
> For multi-part images is there an in-kernel way of generating a file containing a kernel and dtb combined?  I saw a patch proposed in 2008 to add a uImage.<dt> build target but it was shot down because it used the legacy multi-file format.  Is there an equivalent build target that uses the FIT format?


We've normally just done multiple tftp fetches and one grabs dtb and one grabs kernel.

- k


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