Hi,   I bought nanopi_neo boards (for my hobby projects). I am learning about security. I am able to dump e-Fuse area at uboot stage. But i can't modify it (i want to write my own key). I don't have any memory map information of e-fuse.   In present boards, bootROM is not verifying the uboot signature(RSA sign:-)).  1) How to enable signature verification in bootROM? 2) Is there any code or information regarding BootROM security and e-Fuse area mapping? 3) Is there any support of TEE (Tr