[U-Boot-Users] 85xx CDS question

[Andy Fleming]

On 8/20/07, robert lazarski <robertlazarski at gmail.com> wrote:
> On 8/20/07, Andy Fleming <afleming at gmail.com> wrote:
>
> Thanks Andy, as I don't have the mpc8548cds on hand. I can't find an
> 85xx example that has both PCIe and PCI2. What's confusing me is that
> I'm seeing this mapping on the mpc8541cds:
>
> * 0xa000_0000     0xbfff_ffff     PCI2 MEM                512M
>
> And in mpc8548cds:
>
>  * 0xa000_0000     0xbfff_ffff     PCIe MEM                512M

Well, keep in mind those are the comments.  You might want to look at
the config files to confirm the actual mappings.

>
> Its legal on 85xx to define the same memory area for either PCI2 or
> PCIe ? If so, here's my idea. I don't have RapidIO - can I do use the
> memory map that mpc8548cds uses:
>
>  * 0xc000_0000     0xdfff_ffff     RapidIO                 512M
>
> For my board as?
>
> * 0xc000_0000     0xdfff_ffff     PCI2 MEM                 512M


You can do whatever you want.  :)  You just need to change the config
file, and make sure that you have the appropriate entries in your
init.S file to set the LAWs and TLBs appropriately.

Andy