I/O assignment in safety partition

[esantana]

Hello,

I am trying to create a safety IP partition. First, I have created a partition with a fixed and reserved LogicLock region. ll_safe_a LogicLock region is linked to partition_safety partition. The region ll_safe_a includes some I/O pins.

Then, I have selected the option "allow partition to be strictly preserved for safety" in partition_safety. Finally, I assign the safety pins in Assignment editor. The pins are located in the safety LogicLock region. 

When I try to compile the design I get this error:

-Cannot place pin in this location because the location is reserved by strictly preserved logic.

How can I assign safety I/O pins in a safety partition? Is it possible?

Thanks in advance

[sstrell · Accepted solution]

I am presuming you are talking about the safety flow in AN704, which I had never even heard of!

It looks like you're not supposed to physically include the I/O pins in the LL region, which is pretty much a common thing for all block-based design flows: https://www.intel.com/content/www/us/en/docs/programmable/683720/current/assigning-i-o-pins.html

[Kenny_Tan]

All the periphery, IO, PCIE, cannot be logic locked, only core design can be logic locked. usually we locked it for critical module that need timing closure.

[Kenny_Tan]

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