Re: [PATCH 2/3] openfirmware: adds sysfs nodes for openfirmware devices

[Segher Boessenkool]

Sorry to follow up this late...

> > > Is whitespace (in any form) allowed in the compatible value?

No.  Only printable characters are allowed, that is, byte values
0x21..0x7e and 0xa1..0xfe; each text string is terminated by a
0x00; there can be several text strings concatenated in one
"compatible" property.

> > Yes, whitespace is used at least in the toplevel compatible file, like
> > 'Power Macintosh' in some Pismo models.

So those OF implementations violate the OF specification.

> Oh well, it was wishful thinking anyway. ;)
>
> I see two potential solutions:
> * Ideally, I'd like to find a character (pipe?) that isn't used in the
>   Apple OF compatible property. I've been unable to find any
>   documentation that specifies to this level of detail. (Well, without
>   paying for the IEEE-1275 reference, and it may not even be there.)

See 2.3.75 and 3.2.2.1.2 in the OF spec.


Segher

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