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data memory mapping microblaze

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INFO: this very same post was posted to comp.arch.embedded with no
 follow up over few days, that's the reason why I decided to post
 it here where I hope to get more feedback.

Hi everyone,

I'm dealing with an mb-lite which is clone of the microblaze 
architecture and I'm trying to understand how the memory mapping works.

We have memory mapped registers which are needed to exchange data 
between the uP and the FPGA and it should be pretty straight
 forward to 
map this memory into a segment in 'data memory', but unfortunately it 
seems the object-dump does not seem to show anything but a list of 
segments with no distinction between 'data memory' and 'instruction 
memory'.

IIRC on similar Harvard Architectures (like the ADSP21xx) you could 
write the linker script to store data and instructions.

I'm using a mb-gcc and I've looked to the ld refernce, but how can you 
specify that a set of registers need to go to the data memory to a 
specific address? Or is it implicitely assumed that .data segments
 would 
go to a 'data memory'?

Anyone with any pointer?

Al

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Thread

data memory mapping microblaze alb <al.basili@gmail.com> - 2015-02-07 07:17 +0100
  Re: data memory mapping microblaze Brian Drummond <brian@shapes.demon.co.uk> - 2015-02-07 10:54 +0000
    Re: data memory mapping microblaze al.basili@gmail.com (alb) - 2015-02-08 20:42 +0000
  Re: data memory mapping microblaze Tim Wescott <seemywebsite@myfooter.really> - 2015-02-07 19:16 -0600
    Re: data memory mapping microblaze Tim Wescott <seemywebsite@myfooter.really> - 2015-02-07 19:21 -0600
    Re: data memory mapping microblaze al.basili@gmail.com (alb) - 2015-02-08 21:38 +0000

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