Re: [coreboot] Modifying Coreboot to support a new processor

[Dsouza, Malcolm]

Thank you for all the help!

Regards,
Malcolm

________________________________
From: Corey Osgood [mailto:[e-mail]]
Sent: Thursday, August 11, 2011 7:44 AM
To: Stefan Reinauer
Cc: Dsouza, Malcolm; [e-mail]
Subject: Re: [coreboot] Modifying Coreboot to support a new processor

On Wed, Aug 10, 2011 at 6:51 PM, Stefan Reinauer <[e-mail]> wrote:
* Dsouza, Malcolm <[e-mail]> [110809 14:40]:
> Thanks Corey,
> I agree that before reading through the code, it is better to first check
> if the BIOS guides are available. However I would still like the answer to
> my question if I wish to carry on with the investigation for now.
> I am trying to work out an overview of the changes required for a start; a
> bird's eye view of what the changes could turn out to be. What is the best
> approach for this?

You will have to write "drivers" for all your components.

* Northbridge (integrated into CPU these days)
* Southbridge
* CPU
* Super I/O / Embedded Controllers / Management Engine
* ...

Starting a new chipset port for a chipset of that complexity is probably
going to be 6 months to a year of work

I also seem to remember something about the iX CPUs having a different bus setup for the multiple northbridges, but I don't remember the specifics, and never looked into what changes might be needed to coreboot.

-Corey

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