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.
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?