On Saturday 19 January 2008 09:55, Henk Koster wrote:
> On Friday 18 January 2008 22:48:00 you wrote:
> > Manufacturer: Apple Computer, Inc.
> > Product Name: MacBook1,1
> >
> > With 2.6.22, did you notice any functional difference with
> > "acpi_osi=!Linux"?
>
> No difference
>
> > (or since the default changed at 2.6.23, with 2.6.23 or later
> > do you notice any difference with "acpi_osi=Linux"?)
>
> No difference
>
> > Please send me the output from acpidump.
>
> Attached, running 2.6.23 now.
OSI(Linux) changes teh value of OSYS:
OperationRegion (GNVS, SystemMemory, 0x7EED5C10, 0x0100)
Field (GNVS, AnyAcc, Lock, Preserve)
{
OSYS, 16,
...
Scope (\_SB)
{
Method (_INI, 0, NotSerialized)
{
If (CondRefOf (_OSI, Local0))
{
If (_OSI ("Darwin"))
{
Store (0x2710, OSYS)
}
Else
{
If (_OSI ("Linux"))
{
Store (0x03E8, OSYS)
}
Else
{
Store (0x07D1, OSYS)
}
}
}
Else
{
Store (0x07D0, OSYS)
}
OSYS 0x7D1 enables the UI bit in HPET _STA (Linux doen't care)
and is used by the OS=Darwin test method:
Method (OSDW, 0, NotSerialized)
{
If (LEqual (OSYS, 0x2710))
{
Return (0x01)
}
Else
{
Return (0x00)
}
}
which treats Linux and Windows the same,
so OSI(Linux) is a NOP on the MacBook1,1
thanks,
-Len
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