[oe] Request for Help : Porting linux to custom x86 (AMD SC520) board

[Paul Menzel]

Dear Graeme,


Am Mittwoch, den 27.01.2010, 09:52 +1100 schrieb Graeme Russ:

[…]

> To date, I have been doing a lot of work getting a functionaly stable
> boot loader up and running. I ended up choosing U-Boot because it
> appeared to be the most open of all mature boot loaders.

coreboot also seems to support some boards with the AMD SC520 [1].

> U-Boot had a
> very old and incomplete x86 / sc520 port which I have put a lot of
> work into maturing and stabalising. Nearly all of this work to date
> has been fed back into the U-Boot source (you can track my progress on
> their mailing list). I am now at the point where I feel confident that
> U-Boot can launch a Linux kernel.
> 
> The problem is - I don't know how to proceed. It looks like PPC and
> ARM have very strong embedded followings and there is a lot of
> information out there for people that want to get an embedded kernel
> running on these platforms. x86 seems to be a very poor cousin.
> 
> So far, I have cloned the 2.6.33 linux kernel Git repository and
> configured and compiled the kernel.

Where does Linux stop if you try to boot it?

> I think my first question is about how to get hardware information
> (RAM layout etc) to the Kernel. It looks like the initial U-Boot
> implementation setup a very basic BIOS which emulated part of the
> traditional PC BIOS. Surely there is a better way to do this. Is the
> Simple Firmware Interface an option?
> 
> Any help would be greatly appreciated.

Sorry I cannot help further. Should not the guys on the U-Boot list know
more about how to get U-Boot and Linux running on a x86 system?


Thanks,

Paul


[1] http://www.coreboot.org/Supported_Motherboards
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