85xx FDT updates?
galak at kernel.crashing.org
Wed Apr 26 02:55:49 EST 2006
On Apr 25, 2006, at 11:49 AM, Dan Malek wrote:
> On Apr 25, 2006, at 3:49 AM, Eugene Surovegin wrote:
>> It seems some people here lost touch with reality - embedded Linux is
>> mostly run on custom hardware, not on evaluation boards.
> This is the reason I usually mention such things. While we all
> want to see the new features, we have to be sensitive to the
> real world product deployment of Linux. While your world
> may be a few evaluation boards that allow you to update
> software many times a day, the real world products can't
> afford to do that. From my own experience, I can tell you
> that none of the deployed systems I've worked on will
> ever update U-Boot. They consider this a sacred piece of
> software such that is all else fails they can recover a
> system remotely using U-Boot commands. They won't
> risk updating U-Boot in case it fails. Making Linux dependent
> on a particular, updated, version of U-Boot just isn't going
> to work in most deployed systems. Or worse, making
> Linux dependent on U-Boot isn't necessarily popular
> either. For various reasons, especially when replacing
> legacy software, some custom boot rom is often the
> only choice.
I understand this, however these systems are not in the kernel tree
and thus we can only do so much for them. I agree a shim between a
non-flat dev tree aware u-boot and kernel would be a good thing.
However, I don't see that as something I have to produce as a board
maintainer if I can give you and updated u-boot to use.
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