On 18.07.2007 13:15, Stefan Reinauer wrote: > * Carl-Daniel Hailfinger <[EMAIL PROTECTED]> [070718 12:43]: >> Hm. Can we abuse ACPI to do that? Like accessing SystemCMOS from a >> _INI function? > > Possibly. But ACPI is running very early in the game. Where would we > hook it up? > > This would also establish ACPI as a pretty hard requirement. There > should be an alternative, too.
It seems there is even a specification FAQ how to do it with Windows: http://www.microsoft.com/whdc/resources/respec/specs/simp_bios.mspx For the real spec, see http://www.microsoft.com/whdc/resources/respec/specs/simp_boot.mspx or google for "sbf21.doc". I have not read the real spec because I didn't want to agree to their LA. > Using ACPI here would be nicely transparent though, hiding firmware > specifics in the firmware code. I like that approach. Since I just discovered the Microsoft approach, I doubt we would want to invent our own mechanism. Regards, Carl-Daniel -- linuxbios mailing list [email protected] http://www.linuxbios.org/mailman/listinfo/linuxbios
