[Skiboot] [PATCH] IPMI: Fix eSEL size

Benjamin Herrenschmidt benh at au1.ibm.com
Mon Aug 3 08:16:38 AEST 2015

On Sun, 2015-08-02 at 22:16 +0530, Vasant Hegde wrote:
> > 
> > I believe FSP PELs can be up to 64k.
> IIRC its 16K.. At least OPAL limits size to 16K.

This was the result of endless discussions last year. Nobody could give
us a firm answer on FSP side. It's supposed to be 64K but various FSP
folks weren't confident >16K was going to work.

> > I also believe the BMC code has a limit for the eSEL content to only
> be 2k.
> > Hostboot truncates our PEL content to the eSEL limit when we send it
> to the
> > BMC.
> Ah! I was not aware of this. May be we should also limit size to 2K..
> @Jeremy, Stewart,
>   Any comments?

If we are going to do that, we should have the size be a variable, and
properly truncate. All the eSELs we generate from OPAL are going to be
ASCII so truncation might not be such a huge issue.


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