DDR in EDK 3.2sp2...

[Terry Andersen]

I have a MB1000 board from Insight, I use the reference design available
"VII_MicroBlaze_DDR_Reference_Design". It works ok, but as soon as I ad an
interrupt controller (opb_intc) and make the timer go thorugh the interrupt
controller and interrupt the Microblaze I cant read anything from the
DDR-RAM!!! The timer runs fine though.....All I read from the DDR_RAM is
zeros :-(
Anyone has an idea of what is wrong? Someone has tried similar?

Best Regards

 

[John Williams]

Hi Terry,

Terry Andersen wrote:

I have a MB1000 board from Insight, I use the reference design available
"VII_MicroBlaze_DDR_Reference_Design". It works ok, but as soon as I ad an
interrupt controller (opb_intc) and make the timer go thorugh the interrupt
controller and interrupt the Microblaze I cant read anything from the
DDR-RAM!!! The timer runs fine though.....All I read from the DDR_RAM is
zeros :-(

Can you post your MHS file?

Anyone has an idea of what is wrong? Someone has tried similar?

Go to the microblaze uclinux web site (see below) and download the
"mbvanilla_ddr" hardware project (under Downloads). There you can find
a large microblaze project that has several uarts and a timer (all
driving an INTC), as well as SRAM and DDR controller. It works out of
the box for the v2mb1000 board (constraints and everything) - you should
be able to extract what you need to get your project going.

http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux

Regards,

John