Re: [coreboot] ACPI Errors on Lenovo X201i

[Matthias Gazzari]

Hi Patrick,

I see the following occurrence of HBDC in the ssdt.dsl (decompiled from
/sys/firmware/acpi/tables/SSDT, is that the right file?) just below the
scope of the main DefinitionBlock:

Scope (_SB.EC.HKEY)
{
    Name (HBDC, 0x00)
}

Additionally, I have got this warning: "iASL Warning: There were 2
external control methods found during disassembly, but only 0 were
resolved (2 unresolved)." Not sure if that is relevant for this issue.

Cheers,
Matthias

On 14/07/18 08:55, Patrick Rudolph wrote:
> Hi Matthias,
> The dsdt.dsl is a static file, generated at build time. The ssdt.dsl is generated at each boot.
> Is there a HBDC in the ssdt.dsl  under the same scope ?
> Regards Patrick
>
> Am 14. Juli 2018 00:08:09 MESZ schrieb Matthias Gazzari :
> > Hi Patrick,
> >
> > I built with the current origin/master, so the Nehalem fix
> > https://review.coreboot.org/#/c/coreboot/+/26287/ is already included.
> > I
> > see "ACPI:    * H8" and have the following mentions of HBDC inside the
> > dsdt.dsl:
> >
> > External (HBDC, IntObj)
> >
> > and
> >
> > Method (GBDC, 0, NotSerialized)
> > {
> >    If (HBDC)
> >    {
> >    	Local0 = One
> >    	If (BTEB)
> >    	{
> >    		Local0 |= 0x02
> >    	}
> > Local0 |= 0x04
> > Return (Local0)
> >
> > }
> >    Else
> >    {
> >    	Return (Zero)
> >    }
> > }
> >
> > Method (SBDC, 1, NotSerialized)
> > {
> >    If (HBDC)
> >    {
> >    	Local0 = ((Arg0 & 0x02) >> One)
> >    	BTEB = Local0
> >    }
> > }
> >
> > Hope that helps.
> >
> > Cheers,
> > Matthias
> >
> > On 13/07/18 23:41, Patrick Rudolph wrote:
> > > Hi Matthias,
> > > It looks like the Ssdt generator on x201/nehalem doesn't work as
> >
> > expected.
> > > It was broken and has been fixed in commit
> >
> > https://review.coreboot.org/#/c/coreboot/+/26287/
> > > Do you see "ACPI:    * H8" in coreboot console log ?
> > > Do you see any HBDC method in disassembled ACPI ?
> > > Regards Patrick
> > >
> > > Am 13. Juli 2018 22:46:12 MESZ schrieb Matthias Gazzari
> >
> > :
> > > > Hello,
> > > >
> > > > commit f1114d891865e70ae1f2ba58844fec11d055ae3a (ec/lenovo/h8/acpi:
> >
> > Add
> > > > BDC interface) introduces the following ACPI errors on the Lenovo
> > > > X201i:
> > > >
> > > > ACPI BIOS Error (bug): Could not resolve [_SB.EC.HKEY],
> >
> > AE_NOT_FOUND
> > > > (20180313/dswload2-160)
> > > > ACPI Error: AE_NOT_FOUND, During name lookup/catalog
> > > > (20180313/psobject-221)
> > > > ACPI Error: Ignore error and continue table load
> > > > (20180313/psobject-604)
> > > > ACPI Error: Skipping Scope block (20180313/psloop-532)
> > > >
> > > > and
> > > >
> > > > ACPI BIOS Error (bug): Could not resolve
> > > > [_SB.PCI0.LPCB.EC.HKEY.GBDC.HBDC], AE_NOT_FOUND
> >
> > (20180313/psargs-330)
> > > > ACPI Error: Method parse/execution failed
> >
> > _SB.PCI0.LPCB.EC.HKEY.GBDC,
> > > > AE_NOT_FOUND (20180313/psparse-516)
> > > >
> > > > Do you have any idea on how to fix these issues?
> > > >
> > > > Cheers,
> > > > Matthias