[LinuxBIOS] ACPI DSDT tables for mainboards

[Phani Babu Giddi]

Hello All,

It appears that the DSDT tables and the related ASL files are present for
few boareds in Linux BIOS. If so how are other boards expected to provide
the required DSDT table. Does it has to be taken care either by the kernel
or intiramfs ? Is Linux BIOS ACPI 3.0 compatible ?

The reason I am looking at this is for supporting PCIe hotplug which looks
for _OSC method. This has been specified in ACPI 3.0 spec.

Regards,
Phani

[yhlu]

On Dec 28, 2007 9:59 PM, Phani Babu Giddi  wrote:
> Hello All,
>
> It appears that the DSDT tables and the related ASL files are present for
> few boareds in Linux BIOS. If so how are other boards expected to provide
> the required DSDT table. Does it has to be taken care either by the kernel
> or intiramfs ? Is Linux BIOS ACPI 3.0 compatible ?
>
> The reason I am looking at this is for supporting PCIe hotplug which looks
> for _OSC method. This has been specified in ACPI 3.0 spec.

which MB or chipset?

for MCP55, you may need to modify DSDT in seregenti_cheetah/8132/8111.
you may need access to nvidia mcp55 NDA doc.

you may not look at your MB current DSDT in Normal BIOS. that dsdt is
belonging to IBV ( Phoenix or AMI) instead of MB vendor.

YH

[Phani Babu Giddi]

Hi Yhlu,

Thanks for your response.

I was mainly looking at Geode LX based processor boards and associated
chipsets. I dont think that ASL/AML for these boards is available. But my
question was generic, i mean what if I plan to use Linux BIOS for a custom
board and I want to comply with ACPI. In that case how do I get the
necessary ACPI tables in ASL/AML. Because ACPI compliance is compulsory for
my work. Otheriwise I might have to get the required files from gerated by
one of the comercial BIOS vendors.

Let me know what you think about this.

Regards,
Phani

On Dec 29, 2007 12:23 PM, yhlu  wrote:
> On Dec 28, 2007 9:59 PM, Phani Babu Giddi  wrote:
> > Hello All,
> >
> > It appears that the DSDT tables and the related ASL files are present
>
> for
> > few boareds in Linux BIOS. If so how are other boards expected to
>
> provide
> > the required DSDT table. Does it has to be taken care either by the
>
> kernel
> > or intiramfs ? Is Linux BIOS ACPI 3.0 compatible ?
> >
> > The reason I am looking at this is for supporting PCIe hotplug which
>
> looks
> > for _OSC method. This has been specified in ACPI 3.0 spec.
>
> which MB or chipset?
>
> for MCP55, you may need to modify DSDT in seregenti_cheetah/8132/8111.
> you may need access to nvidia mcp55 NDA doc.
>
> you may not look at your MB current DSDT in Normal BIOS. that dsdt is
> belonging to IBV ( Phoenix or AMI) instead of MB vendor.
>
> YH

[ron minnich]

On Dec 29, 2007 2:43 PM, Phani Babu Giddi  wrote:
> Let me know what you think about this.

we need someone to figure out ACPI: in other words, how we can do it
in linuxbios (v3 mainly), what the restrictions are, etc.

At the 2006 meeting in hamburg we started on this topic, but never finished it.

We need knowledgeable people to tell us how this work can be done.

thanks

ron