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Explorer
Explorer
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Registered: ‎03-03-2011

Using ICAP to load full bitstream

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I've used the ICAP in previous designs to load partial bitstreams. Is it possible to load full bitstreams via the ICAP?

 

I'm using Zynq devices if that makes any difference.

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Scholar
Scholar
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Registered: ‎02-27-2008

Yes if you use the ARM processor PCAP,

 

No, if you use ICAP.


The processor has a by default at startup connection to ICAP, called PCAP for convenience.


That is how you may load bitstreams once the processors are up and running (on the demo boards you can map the PCAP to a /dev/mnt file in Linux, and then just pipe the file to the configuration memory).

 

If you are in the programmable logic, using ICAP, then no, you cannot load an entire bitstream because to instantiate and use ICAP that way uses configuration bits.  You would have to create a partial bitstream that did not overwrite the ICAP interface while loading.

 

 

Austin Lesea
Principal Engineer
Xilinx San Jose

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Scholar
Scholar
14,352 Views
Registered: ‎02-27-2008

Yes if you use the ARM processor PCAP,

 

No, if you use ICAP.


The processor has a by default at startup connection to ICAP, called PCAP for convenience.


That is how you may load bitstreams once the processors are up and running (on the demo boards you can map the PCAP to a /dev/mnt file in Linux, and then just pipe the file to the configuration memory).

 

If you are in the programmable logic, using ICAP, then no, you cannot load an entire bitstream because to instantiate and use ICAP that way uses configuration bits.  You would have to create a partial bitstream that did not overwrite the ICAP interface while loading.

 

 

Austin Lesea
Principal Engineer
Xilinx San Jose

View solution in original post

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Explorer
Explorer
7,851 Views
Registered: ‎03-03-2011
Thanks for the quick reply.
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Newbie
Newbie
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Registered: ‎03-16-2018

Hello,I am a student .I have a problem.Recently,I wan to use the  ICAP in previous designs to  partial bitstreams .But I am not how to use. Beause I don't know how to use address of  WBSTAR ?  Can you help me ?

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