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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
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12 years ago

The EPCS memory chips are standard SPI memory and do have the ability to protect part of the image. However the protected part will be at the top so is useless for protecting the factory image read by AS.

If you use PS you could arrange to read from a high address and then protect that area.