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jfi's avatar
jfi
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2 years ago
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Reading and calculating image checksum directly from FPGA

Hi, We would like to verify the programmed image of a FPGA (MAX10 in this case) by confirming its checksum in-system with e.g our Baseboard Management Controller (i.e. not with an external device or...
Programmable Logic Device
jfi's avatar
jfi
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2 years ago

Thanks Ethan

We don't usually use the CPF, but thanks for the handy tip.

So the checksum is just a byte-wise addition? If so, we cannot calculate the same checksum value as shown in the .map/programmer for the POF when adding its bytes. It seems the (check)sum total is reached before the end of the file, and an insufficient sum is achieved if summing data in the e.g. CFM addresses only.

Are there some parts of the POF file that are excluded in the calculation?

Also, the hope is to be able to calculate this based only off of what is actually on the device. Would a different file format (e.g. rbf) better represent this, if indeed the POF contains additional data?

We are now attempting to dump the internal memory contents in order to see what file type or portion of the POF they match, and what checksum we get using your calculation method.