User Control

The REE patch (teecd and tzdriver.ko) in the TrustZone kit must be executed by the root user. The teecd user-mode daemon must be loaded from the absolute path /usr/bin/teecd.

Upper-layer CA/TA security applications must also be run and loaded as the root user. Otherwise, CAs/TAs cannot be loaded and communicate with each other through the REE Patch.