Porting coreboot to Unknown Sis620/5595 Motherboard

[Hernan Freschi]

Hello,
I'd like to port coreboot to a motherboard I have. I dont have either
brand or model (it's a generic OEM board).

I'm not sure what info is needed so I have uploaded:

lspci -xxxvvvnnn     http://pastebin.org/876731
superiotool -deV   http://pastebin.org/876714

I'd like to know if it's possible and what are the steps to get started.

Thanks,
Hernan

[Hernan Freschi]

Hello,
I'd like to port coreboot to a motherboard I have. I dont have either
brand or model (it's a generic OEM board).

I'm not sure what info is needed so I have uploaded:

lspci -xxxvvvnnn     http://pastebin.org/876731
superiotool -deV   http://pastebin.org/876714

I'd like to know if it's possible and what are the steps to get started.

Thanks,
Hernan

[Anders Jenbo]

This board is a hard one to start out with i would say.

You should look in to getting the documentation for the SIS 620 chip
set. I see that the SIS 630 is supported by Coreboot v1 so you might
want to look in to porting that to v4 and then the SIS 620.

-Anders

ons, 15 09 2010 kl. 18:30 -0300, skrev Hernan Freschi:
> Hello,
> I'd like to port coreboot to a motherboard I have. I dont have either
> brand or model (it's a generic OEM board).
>
> I'm not sure what info is needed so I have uploaded:
>
> lspci -xxxvvvnnn     http://pastebin.org/876731
> superiotool -deV   http://pastebin.org/876714
>
> I'd like to know if it's possible and what are the steps to get started.
>
> Thanks,
> Hernan

[Cristi Magherusan]

În Vin, Septembrie 17, 2010 2:44, Anders Jenbo a scris:
> This board is a hard one to start out with i would say.
>
> You should look in to getting the documentation for the SIS 620 chip
> set. I see that the SIS 630 is supported by Coreboot v1 so you might want
> to look in to porting that to v4 and then the SIS 620.
>
> -Anders

Hi,

I think I may also have such a no-name motherboard based on this chipset
so I may join you in this effort (I must check, though).

I took a look at the datasheets of both 620 and 630 chipsets and from what
I can tell after a short look at them, they seem to be very different.
This means it needs to be done from scratch eventually.

In order to get support for the motherboard, we need to have support for
the following components:
-ITE IT8661F SuperIO (already supported by coreboot)
-SiS5595 southbridge
-SiS620 northbridge

The first step is to get serial output out of the motherboard for
debugging, by getting the SuperIO to work, then implement support for the
other components according to their datasheets.

Regards,
Cristian

[Hernan Freschi]

Here's a photo of the board in question

http://yfrog.com/5g20100917104133116resistj

On Fri, Sep 17, 2010 at 4:01 AM, Cristi Magherusan
 wrote:
> În Vin, Septembrie 17, 2010 2:44, Anders Jenbo a scris:
> > This board is a hard one to start out with i would say.
> >
> > You should look in to getting the documentation for the SIS 620 chip
> > set. I see that the SIS 630 is supported by Coreboot v1 so you might want
> > to look in to porting that to v4 and then the SIS 620.
> >
> > -Anders
>
> Hi,
>
> I think I may also have such a no-name motherboard based on this chipset
> so I may join you in this effort (I must check, though).
>
> I took a look at the datasheets of both 620 and 630 chipsets and from what
> I can tell after a short look at them, they seem to be very different.
> This means it needs to be done from scratch eventually.
>
> In order to get support for the motherboard, we need to have support for
> the following components:
> -ITE IT8661F SuperIO (already supported by coreboot)
> -SiS5595 southbridge
> -SiS620 northbridge
>
> The first step is to get serial output out of the motherboard for
> debugging, by getting the SuperIO to work, then implement support for the
> other components according to their datasheets.
>
> Regards,
> Cristian