From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rv-out-0910.google.com (rv-out-0910.google.com [209.85.198.187]) by ozlabs.org (Postfix) with ESMTP id DD312DDEC5 for ; Sat, 25 Aug 2007 06:47:49 +1000 (EST) Received: by rv-out-0910.google.com with SMTP id c27so1342120rvf for ; Fri, 24 Aug 2007 13:47:48 -0700 (PDT) Message-ID: <5c9cd53b0708241347q6128f74fn644a20df4e39045c@mail.gmail.com> Date: Fri, 24 Aug 2007 16:47:48 -0400 From: "mike zheng" To: "Andy Fleming" Subject: Re: 8555CDS BSP on 8548CDS board In-Reply-To: <59B03E9A-3FE0-4F11-AEB5-CEAE6AB38F92@freescale.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_18392_2386098.1187988468535" References: <5c9cd53b0708240900y6537e42cn5ee59b2a2a707768@mail.gmail.com> <59B03E9A-3FE0-4F11-AEB5-CEAE6AB38F92@freescale.com> Cc: linuxppc-embedded@ozlabs.org List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , ------=_Part_18392_2386098.1187988468535 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi Andy, Uboot is fine, I will re-use the current uboot on 8548CDS board. But the BSP linux kernel is 2.6, I have to use 2.4 kernel. I merged E500 support (8548CDS BSP and Kernel) from 2.6 back to my 2.4source tree. I managed to make the serial port driver (Poll mode) working. The code already passed "console_init()". However the console does NOT come out. What shall I check, exception, interrupt or decrementor? Thus I am think to re-start from a 8555CDS BSP on 2.4 kernel, and modify it for 8548CDS board. I am not sure which approach is easier. Maybe both are difficult for me. :-( Thanks, On 8/24/07, Andy Fleming wrote: > > > On Aug 24, 2007, at 11:00, mike zheng wrote: > > > Hi, > > > > I was told Freescale's 8555CDS board is very similar to 8548CDS > > board. I just wonder what exactly the differences are. can I just > > put the 8555CDS BSP onto the 8548CDS board? > > > > Thanks in advance, > > > The 8555 u-boot is different from the 8548 u-boot. There are also > differences in the device-tree (I'm not sure what version of the > kernel is in the BSP, so I can't say for sure). Recent versions of > the Linux kernel merged all of the CDS systems into one kernel. > > As for the differences, off the top of my head: > > * 8555 vs 8548 chip > * PCI slot on the carrier card is PCI on 8555, PCIe on 8548. > * 8548 has 4 eTSECs, 8555 has 2 TSECs (and the # of ethernet ports > reflects this). > > Andy > ------=_Part_18392_2386098.1187988468535 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline
Hi Andy,
 
Uboot is fine, I will re-use the current uboot on 8548CDS board. But the BSP linux kernel is 2.6, I have to use 2.4 kernel.
 
I merged E500 support (8548CDS BSP and Kernel) from 2.6 back to my 2.4 source tree. I managed to make the serial port driver (Poll mode) working. The code already passed "console_init()". However the console does NOT come out. What shall I check, exception, interrupt or decrementor? 
 
Thus I am think to re-start from a 8555CDS BSP on 2.4 kernel, and modify it for 8548CDS board. I am not sure which approach is easier. Maybe both are difficult for me. :-(
 
Thanks, 

 
On 8/24/07, Andy Fleming <afleming@freescale.com> wrote:

On Aug 24, 2007, at 11:00, mike zheng wrote:

> Hi,
>
> I was told Freescale's 8555CDS board is very similar to 8548CDS
> board. I just wonder what exactly the differences are. can I just
> put the 8555CDS BSP onto the 8548CDS board?
>
> Thanks  in advance,


The 8555 u-boot is different from the 8548 u-boot.  There are also
differences in the device-tree (I'm not sure what version of the
kernel is in the BSP, so I can't say for sure).  Recent versions of
the Linux kernel merged all of the CDS systems into one kernel.

As for the differences, off the top of my head:

* 8555 vs 8548 chip
* PCI slot on the carrier card is PCI on 8555, PCIe on 8548.
* 8548 has 4 eTSECs, 8555 has 2 TSECs (and the # of ethernet ports
reflects this).

Andy

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