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Main goal of the project:

To port FreeBSD to Efika, an e300 based evaluation board.

Main steps to be taken:

overview of the hardware, gathering and revieving documentation,
review of existing ports on similar architecture,
comparison and trial merge of A. Turner's code with the CURRENT,
writing basic driver - an interrupt controller,
adding some basic peripherials: modelling the newbus hierarchy model of integrated devices, such as internal bus, UART,
writing device drivers for on-chip peripherials,

(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:

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 :) :

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

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

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:

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

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:

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 Efica project in not so far future…
Future work: newbus model, UART…		TBA