Qoriq Trust Architecture 21 User Guide Site

| Level | Access | Requirement | |-------|--------|--------------| | Disabled | No debug | Final product | | Unlocked | Full JTAG | Correct challenge-response | | Limited | Data memory only | Partial key |

./cst -s -i boot_image.ini -o signed_image.bin The header output includes signature, key index, and monotonic counter. The guide warns: Fusing is irreversible. Use the pbl_fuse tool or a JTAG programmer. Example fuse commands for SRKH (address 0x1E0): qoriq trust architecture 21 user guide

This article is for informational purposes. Always refer to the latest official NXP documentation for your specific processor part number. qoriq trust architecture 21 user guide