Thanks a lot , that was the error that I was making .


Zara wrote:
> On Wed, 16 May 2007 16:19:40 +0000 (UTC), Matthew Hicks
> <mdhicks2@uiuc.edu> wrote:
>
> >Regenerate the linker script and try again.
> >
> >
> >---Matthew Hicks
> >
> >
> <...>
> >>
> >> Is there any constraint regarding the number of Ethernet MAC that you
> >> can place on the OPB Bus? I have attempting to put 2 MACs on the Bus,
> >> but as soon as a instantiate the second MAC and attempt to generate
> >> bitstream, I get the following error: address space overlap! This
> >> error is generated by PlatGen
> >>
> >> I am certain address overlap that this is not the problem , because I
> >> have gone through the entire address map of my system. No two
> >> peripherals are assigned the same address space.
> >>
> <..>
>
> I don't think regenerating the linker script will work, it has nothing
> to do with PlatGen!
>
> I have tried it, and the problem seems to lie within the opb_ethernet
> core itself. It will not allow me to instantiate neither one nor two
> of them. In fact, every core instantiated has an address overlap with
> itself!
>
> The problem arises when connecting both MSOPB and SOPB, i f you only
> connect SOPB *or* MSOPB there is no address overlap. I had the same
> misunderstanding the firts time I tried: I thought MSOPB was only the
> master part, but it is both parts of the bus at the same time!
>
>
> Best regards,
>
> Zara

On Wed, 16 May 2007 16:19:40 +0000 (UTC), Matthew Hicks
<mdhicks2@uiuc.edu> wrote:

>Regenerate the linker script and try again.
>
>
>---Matthew Hicks
>
>
<...>
>> 
>> Is there any constraint regarding the number of Ethernet MAC that you
>> can place on the OPB Bus? I have attempting to put 2 MACs on the Bus,
>> but as soon as a instantiate the second MAC and attempt to generate
>> bitstream, I get the following error: address space overlap! This
>> error is generated by PlatGen
>> 
>> I am certain address overlap that this is not the problem , because I
>> have gone through the entire address map of my system. No two
>> peripherals are assigned the same address space.
>> 
<..>

I don't think regenerating the linker script will work, it has nothing
to do with PlatGen!

I have tried it, and the problem seems to lie within the opb_ethernet
core itself. It will not allow me to instantiate neither one nor two
of them. In fact, every core instantiated has an address overlap with
itself!

The problem arises when connecting both MSOPB and SOPB, i f you only
connect SOPB *or* MSOPB there is no address overlap. I had the same
misunderstanding the firts time I tried: I thought MSOPB was only the
master part, but it is both parts of the bus at the same time!


Best regards,

Zara

Regenerate the linker script and try again.


---Matthew Hicks


> Hi,
> 
> Is there any constraint regarding the number of Ethernet MAC that you
> can place on the OPB Bus? I have attempting to put 2 MACs on the Bus,
> but as soon as a instantiate the second MAC and attempt to generate
> bitstream, I get the following error: address space overlap! This
> error is generated by PlatGen
> 
> I am certain address overlap that this is not the problem , because I
> have gone through the entire address map of my system. No two
> peripherals are assigned the same address space.
> 
> When I had only a single MAC in the system , with address 40c0_0000 to
> 40c0_ffff , things were working perfectly . But as soon as instantiate
> the second MAC with address 42c0_0000 to 42c0_ffff, this problem
> creeps up.
> 
> The PLB2OPB Bridge is from 0x00000000 to 0x7FFFFFFF, so that entire
> range can be used by peripherals on the OPB Bus.
> 
> Thanks
> Venu

Hi,

Is there any constraint regarding the number of Ethernet MAC that you
can place on the OPB Bus? I have attempting to put 2 MACs on the Bus,
but as soon as a instantiate the second MAC and attempt to generate
bitstream, I get the following error: address space overlap! This
error is generated by PlatGen

I am certain address overlap that this is not the problem , because I
have gone through the entire address map of my system. No two
peripherals are assigned the same address space.

When I had only a single MAC in the system , with address 40c0_0000 to
40c0_ffff , things were working perfectly . But as soon as instantiate
the second MAC with address 42c0_0000 to 42c0_ffff, this problem
creeps up.

The PLB2OPB Bridge is from 0x00000000 to 0x7FFFFFFF, so that entire
range can be used by peripherals on the OPB Bus.


Thanks
Venu