[yocto] should a BSP layer *really* ever need additional layers to be functional?

[Robert P. J. Day]

On Thu, 23 Mar 2017, Josef Holzmayr wrote:

> Hi,
>
> On 23.03.2017 11:35, Robert P. J. Day wrote:
> >   i always thought that using nothing more than a BSP layer (plus, of
> > course, the underlying OE layers) should allow you to get to the
> > command line. is that not true?
>
> I don't think that this generally holds true, as it would lead to
> significant duplication. Imagine a board based off something already
> in meta-ti or meta-intel. And maybe just needing a slightly modified
> bootloader.

  true, but the wording in the BSP Guide is:

"Some BSPs require additional layers on top of the BSP's root layer in
                                     ^^^^^^^^^
order to be functional. "

  that particular phrasing suggests that perhaps what's needed is more
user space content of some kind. perhaps rewording that to say that a
BSP layer might be based on top of other layers as a starting point
would be clearer.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

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