ACPI table modifications

ACPI table modifications

[Gautam Bhat]

[-- Attachment #1: Type: text/plain, Size: 191 bytes --]

Hi,

I want to add some I2C based temperature sensors to the -M Q35 machine. I
want to update the ACPI tables to add this device information. How can I go
about  doing this?

Thanks,
Gautam.

[-- Attachment #2: Type: text/html, Size: 653 bytes --]

Re: ACPI table modifications

[Philippe Mathieu-Daudé]

Hi Gautam,

On 10/11/19 8:47 PM, Gautam Bhat wrote:
> Hi,
> 
> I want to add some I2C based temperature sensors to the -M Q35 machine. 
> I want to update the ACPI tables to add this device information. How can 
> I go about  doing this?

QEMU provides a MAINTAINERS file with persons to contact sorted by 
topics (I Cc'ed in this reply).

This is the relevant ACPI section, it also lists the files you might 
look at:

ACPI/SMBIOS
M: Michael S. Tsirkin
M: Igor Mammedov
S: Supported
F: include/hw/acpi/*
F: include/hw/firmware/smbios.h
F: hw/mem/*
F: hw/acpi/*
F: hw/smbios/*
F: hw/i386/acpi-build.[hc]
F: hw/arm/virt-acpi-build.c
F: tests/bios-tables-test.c
F: tests/acpi-utils.[hc]
F: tests/data/acpi/

Eventually the bios-tables-test.c file is a good starting point.

Regards,

Phil.

Re: ACPI table modifications

[Corey Minyard]

On Fri, Oct 11, 2019 at 09:22:19PM +0200, Philippe Mathieu-Daudé wrote:
> Hi Gautam,
> 
> On 10/11/19 8:47 PM, Gautam Bhat wrote:
> > Hi,
> > 
> > I want to add some I2C based temperature sensors to the -M Q35 machine.
> > I want to update the ACPI tables to add this device information. How can
> > I go about  doing this?

FYI, I just added the SMB ACPI entry to q35, change:

  ebe15582cafeb "pc: Add an SMB0 ACPI device to q35"

I did this for IPMI, but it should be easy to add your own entries
the same way.

-corey

> 
> QEMU provides a MAINTAINERS file with persons to contact sorted by topics (I
> Cc'ed in this reply).
> 
> This is the relevant ACPI section, it also lists the files you might look
> at:
> 
> ACPI/SMBIOS
> M: Michael S. Tsirkin
> M: Igor Mammedov
> S: Supported
> F: include/hw/acpi/*
> F: include/hw/firmware/smbios.h
> F: hw/mem/*
> F: hw/acpi/*
> F: hw/smbios/*
> F: hw/i386/acpi-build.[hc]
> F: hw/arm/virt-acpi-build.c
> F: tests/bios-tables-test.c
> F: tests/acpi-utils.[hc]
> F: tests/data/acpi/
> 
> Eventually the bios-tables-test.c file is a good starting point.
> 
> Regards,
> 
> Phil.
> 

Re: ACPI table modifications

[Igor Mammedov]

On Sat, 12 Oct 2019 00:17:10 +0530
Gautam Bhat <mindentropy@gmail.com> wrote:

> Hi,
> 
> I want to add some I2C based temperature sensors to the -M Q35 machine. I
> want to update the ACPI tables to add this device information. How can I go
> about  doing this?

Process is described here:
   https://www.mail-archive.com/qemu-devel@nongnu.org/msg650066.html


> 
> Thanks,
> Gautam.