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. :-(

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