On Thu, May 05, 2016 at 06:03:40PM +0100, Grant Likely wrote: > On Thu, May 5, 2016 at 5:53 PM, Mark Brown <broo...@kernel.org> wrote:
> > I think there's one other slightly different angle on this which we
> > should address at the same time, creating fresh boot media for a device
> > ("I just unpacked my board and want to write a system image to a SD
> > card"). If we can come up with a standard way of describing the
> > requirements of boards then we could provide a shared database of this
> > information that tools could use. This might also be useful for the
> > less helpful requirements where it's hard to figure out what's going on
> > from the media itself.
> Are you talking about for boards that don't have on-board media? For
> the boards with eMMC, I think the normal use-cases should always be to
> boot from eMMC (regardless of where the OS is installed). Booting from
> an SD shouldn't require anything special. The only time to boot
> firmware from SD is when upgrading the platform firmware, or doing
> firmware development.
> For systems without on-board storage, yes I agree it would be good to
> have a standard way of describing the layout because the images will
> always need to be tailored for the board.
Yes, boards that don't have on board media are the big issue here -
they're typically the lowest cost and hence quite widely used. The same
infrastructure might also help deal with some of the oddballs that have
unhelpful on board storage but that's much less important if it's even
useful at all.
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