8555CDS BSP on 8548CDS board

8555CDS BSP on 8548CDS board

[mike zheng]

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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,

Mike

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8555CDS BSP on 8548CDS board

[mike zheng]

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 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,

Mike

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Re: 8555CDS BSP on 8548CDS board

[Andy Fleming]

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

Re: 8555CDS BSP on 8548CDS board

[mike zheng]

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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 <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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