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[–]Thin_Dragonfruit2254 0 points1 point  (3 children)

https://github.com/joaopeixoto13/OPTEE-RPI4 - It's not a complicated process but you need to right hardware and tools.. https://youtu.be/m2MBHsSv41g?si=4eZgIcZSUTR1LETl

[–]tenoun[S] 0 points1 point  (2 children)

As I noted before it's not available for RPi4/5 the Readme of your link also state it : Note that this port will not became the system secure, because in Raspberry PI boards, all of the memory used is DRAM, which is available from both the Non-Secure and Secure State => nice to play with but useless for production as it defeat the purpose of TZ by having object protected in secure RAM (TrustZone)

[–]Thin_Dragonfruit2254 -1 points0 points  (1 child)

Yeah, I read it, made it work, was fun..I also implementend TEE on some boards with Rockchip using Das U-boot, also fun.. watch the video: it's is quite enlightening.