[U-Boot] recommended method of netbooting kernel/dtb in u-boot?
Chris Friesen
chris.friesen at genband.com
Thu Apr 11 21:01:16 CEST 2013
Hi all,
We've got a Linux powerpc system that uses u-boot. Generally in our
environment on bootup the firmware 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. The paths on the server vary
depending on which slot is being booted, so it's not practical to
hard-code anything in u-boot.
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? Or is there some
other option I'm overlooking?
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?
Thanks,
Chris
--
Chris Friesen
Software Designer
500 Palladium Drive, Suite 2100
Ottawa, Ontario K2N 1C2, Canada
www.genband.com
office:+1.343.883.2717
chris.friesen at genband.com
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