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AM335x secure boot



Hi,

I am designing a SmartGrid product around a Sitara processor, and would like to secure it in a few ways:

1. Protect the CPU from booting non-signed software - protecting spl (uboot) would do

2. Protect the root filesystem from being examined by an attacker (in layman's terms encrypt it with a hidden symmetric key)

3. Fix the booting order (so that only selected bootloader sources in a fixed order are attempted)

Where do I find information on how to do that?

Product brochure tells AM335x support "secure boot", "Crypto DMA" and "PKA" (what is this?).