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sri4254u
Newbie
Newbie
2,089 Views
Registered: ‎04-06-2011

Custom hardware on PLB bus

Hi.

 

I am new to Linux on Xilinx and trying to fix an issue accessing my custom harware on PLB bus.

Basically i have a simple memory region defined as a device in PLB bus. I am able to access its address space via xmd console as well.

 

But when I boot Linux and do ioremap for that region and try to access it, Linux crashes. ioremap does not fail but when I dereference the iomapped address, the linux crashes.

---------------------Linux crash---------------------

Machine check in kernel mode.
Data Read PLB Error
Oops: Machine check, sig: 7 [#1]
PREEMPT Xilinx Virtex440
last sysfs file:

----------------------------------------------------------

 

Can anyone please point me to what could be wrong?

 

Thanks in advance!

 

Srikanth

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