Freescale MPC8247 and/or MPC5200 port ?

[Victor V. Vengerov]

Ed,

Thanks for pointing this.

I have quickly looked through FEC definitions in micromonitor code - no, 
MPC5200 FEC is very different. Serial seems the same as MPC860, which is 
different as well.

Actually I don't see too much problems to implement these drivers from 
scratch. Of course, good starting point is always good.

Regards,
Victor

Ed Sutter wrote:

> Victor,
> Not sure of the similarity, but the micromonitor tarball has
> a port to a MPC852t based board with FEC, ethernet and serial port
> drivers (polled).  That may give you a start anyway.  I've hooked
> RTEMS to micromonitor in the past, and it works out pretty well.
>
> If useful, go to http://www.microcross.com/html/micromonitor.html
> for a download point.
> Ed
>
>
>> Joel Sherrill <joel at OARcorp.com> wrote:
>>
>>> Victor V. Vengerov wrote:
>>>
>>>> Markku,
>>>>
>>>> We are planning BSP development for MPC5200 (5200Lite evaluation 
>>>> board) and have made some preliminary analysis for this work.
>>>>
>>>> It looks like MPC5200 architecture is quite new, so most drivers 
>>>> (serial, network, IDE, PCI, ...) and initialization code need to be 
>>>> developed from scratch. From other side, 603e core is already 
>>>> supported. We have not found BSP which is really similar to MPC5200 
>>>> one. So my advice is to start from scratch looking to other powerpc 
>>>> BSPs (score603e?) for reference.
>>>
>>>
>>>
>>>
>>> If it is a 603e core with a handful of on-CPU peripherals, talk to
>>> someone at FreeScale and try to get them to tell you if the on-CPU
>>> peripherals are the same as or similar to those on any other part.
>>>
>>> Many times they do not really advertise it but they are the same
>>> or slightly modified.  They really could be new but you might get
>>> lucky.
>>>
>> Yes, I know it. Actually I have compared their on-chip peripheral (at 
>> least, FEC, ATA, DMA, PSC - Programmable Serial Controller) against 
>> at least all m68k/coldfire and Motorola PowerPC chips supported in 
>> RTEMS. Nothing similar. Also, we have looked into Linux kernel - 
>> MPC5200 peripheral drivers are separate from other ex-Motorola chips.
>>
>>> The ep1a or mpc8260 may also be good BSPs to look at.  It largely
>>> depends on what the on-CPU peripherals look most like.
>>
>>
>>
>> No, they are different - at least mpc8260, which is known to me and 
>> I'm sure I have checked it.
>>
>> Thanks,
>> Victor
>>


-- 
Victor Vengerov
OKTET Labs, St.-Petersburg, Russia  http://www.oktetlabs.ru
Phone: +78124286709 (office) +78129389372 (mobile) +78124281653 (home)