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Altera_Forum
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12 years ago

how to protect factory image data in epcs flash from rewriting or erasing?

Hello. I'm using NIOS II with remote system update(rsu_cyclone4 from alterawiki) and EPCS flash controller cores on Cyclone IV E(DE2-115). And there are 2 images in flash(EPCS64): Factor...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

There is no protection function in the EPCS itself so you can't define a protected area. You need to do this in your software, i.e. before it erases or rewrites a block, it should check that it is in the application region and not the factory one.