Qoriq Trust Architecture 21 User Guide ⟶ 〈VALIDATED〉

QorIQ Trust Architecture 2.1 User Guide confidential document

Secure Boot: Ensures only authenticated, OEM-signed code can execute on the processor. qoriq trust architecture 21 user guide

Validation: Transition the device from "Non-Secure" to "Secure" mode to enforce signature checking at every power-on reset. Operational States QorIQ Trust Architecture 2

If the Intent to Secure (ITS) fuse is blown, the system is locked down until trusted code is validated. 2. Internal Secure Boot Code (ISBC) The processor jumps to the on-chip Internal Boot ROM (IBR). qoriq trust architecture 21 user guide

Error 3: JTAG unable to connect

Symptom: Debugger times out after fusing. Cause: You fused the "Secure Debug Enable" bit without setting up the challenge-response key. Solution: Unrecoverable. You must use a new chip.