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Altera_Forum
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12 years ago

Checking configuration bitstream integrity (Cyclone IV)

I believe the configuration bitstream contains checksums or similar which the target FPGA checks for errors or corruption. Are the details of this integrity checking published? I'd like to have a hos...
Altera_Forum's avatar
Altera_Forum
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12 years ago

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Are the details of this integrity checking published?

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Nope.

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I'd like to have a host processor test the bitstream image before trying to use it to configure my FPGA. I could wrap my own CRC around the image, but I'd rather not if I don't have to.

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I used U-Boot's mkimage to add a header and checksum. U-Boot can then test the integrity after flashing the image. Eg., see p29

http://www.ovro.caltech.edu/~dwh/carma_board/fpga_configuration.pdf

Cheers,

Dave