Main goal of the project:

Main steps to be taken:

(I remind all about my blog where I post comments on the project: http://bitbay.blogspot.com/)

After having done that it is expected to be able to operate in a single user mode.

Recently, I've been playing with the board in our lab in order to configure it. Here's the snaphot of the Efika OF booting:

efika_of.jpg

And finally, a success: efika boots FreeBSD after merging A. Turner's code with the CURRENT. The code required manual patching due to some changes in the src layout. Here's a proof :) :

efika1stBoot.jpg

I've managed to fire the KDB, so I have the access to the running kernel and verbose boot thanks to the bootverbose: kdb.jpg

At the moment kernel stops where devices are attached. Among them, there should be a PIC driver, which is missing...

picPanic.jpg

Efika Devices Tree

I'm using an old mac PIC driver as a skeleton of future Efika's PIC driver. Here we have a dev trees, in real situation, in original driver case and in the present Efika's case.

Here, we see devices interconnected by physicsl bus:

real-dev-tree.jpg

The newbus model is in fact a logical mapping of the physical situation to well organized structure:

heathrow-newbus.jpg

What differs Efika from i.e. mac, is the OCP bus, that is prior to pci. This was an important point on the way to reach the devices initialization. Now we have:

efika-newbus.jpg

Roadmap and timetable

Description

Status

Comments

Date

Establish Wiki

Done

25-IV-2008

Establish p4 branch

Done

25-IV-2008

Gather documentation

Got: e300, MPC5200, newbus...

Lot's of documentation collected

Find A.T. Efika starter Kit

Done

11-V-2008

Apply patches do CURRENT

Done

Problems with layout change since FBSD 6.x, RESOLVED

24-V-2008

Build and test patched version

Done

Kernel successfuly boots over tftp

29-V-2008

Initial p4 submit of merged src: we are ready to code

Done

12-VI-2008

Turn on debug info in the devices code

No req. at the momment

Fix the OF_xxx() functions family

Done

The *OF_buf storage was a problem

19-VIII-2008

Check of proper device enumeration from OF

Done

Adding ofwbus driver showed good names

26-VIII-2008

Build the PIC driver skeleton

Done

powermac/hrowpic.c used

26-VIII-2008

Build the PIC driver

Temporarily suspended

I'm deeply involved in new, huge project of creating European Games Academy and European Games Centr (www.ega.org.pl). I plan to come back to the Efika project in not so far future and to use FreeBSD in the development of some sort of new kind of computer games related device...

Future work: newbus model, UART...

TBA

Here's our hero:

http://www.genesi-usa.com/efika.php

and this is my P4 branch (to be changed to the new one soon):

http://perforce.freebsd.org/depotTreeBrowser.cgi?FSPC=//depot/projects/soc2008/vi0&HIDEDEL=NO

Porting_FreeBSD_to_Efika_(PPC_bring_up) (last edited 2008-11-02 20:47:39 by PrzemekWitaszczyk)