Re: [SeaBIOS] [PATCH v2 0/2] Add IPMI SMBIOS/ACPI support

[Gleb Natapov]

On Sun, Aug 12, 2012 at 08:22:12PM -0500, Corey Minyard wrote:
> > Patch 2 is complex and I don't fully understand what it is doing.  A
> > quick scan leads me to believe it is constructing a dynamic SSDT -
> > though it's not clear why a dynamic SSDT is needed and why the
> > existing mechanism (see build_ssdt()) for generating dynamic SSDTs is
> > not used.
>
> It is constructing an addition to the DSDT table that is tacked on
> to the end of that table if IPMI is present.  It is complex, but
> building ACPI namespace data is complex, and the data is not fixed
> length.

You do not need to construct IPMI device dynamically in DSDT. Write it
in AML and have _STA method that tells OSPM if device is present or not.