[U-Boot-Users] builtin OF tree dtb gone
wd at denx.de
Sun Dec 17 18:10:43 CET 2006
In message <008901c721e6$ece8c160$1e67a8c0 at Jocke> you wrote:
> > Then store the DTB in flash, probably as part of your production /
> > update mechanism. Nobody prevents you from doing this.
> Well, newer versions of U-boot prevents me from embedding the OF tree
> inside the u-boot image.
I wrote "in flash" - this does not mean that it has to be embedded
within the U-Boot image. It can be simply attached to it's end,
probably with some padding to allow for sector alignment.
> "in some setups", that's the point. Our setup works fine with
> an embedded OF tree in u-boot. If I am to adapt to this new
> method of supplying the OF tree, not only will I have to repartion
> the flash to fit the tree in there, I also need to make sure
It should make very little difference (probably not visible to the
rest of the system), if the tree is embedded within the U-Boot image
or attached to it's end (or if it's preceeding the image).
> that some 15-20 people learns this new concept for no real gain.
You complain abouyt a problem where there is none.
> It is nothing wrong with having the ability provide a OF tree
> at boot time, but forcing everyone to do so is. The
> most flexible way is to have both.
You are not forced into anything here.
If you like, you can still use your own boared-specific lkinker
script and "embed" he tree to any location in your image; you just
have to find a good way to remember the start address. Actually that
should not be too difficult, either. It should be prossible to
automatically set an environment variable to the right address.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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