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Original question:

PROCESSOR-SDK-AM69: Security AM69 Device Development

PROCESSOR-SDK-AM69: Booting Authentication Sequence for RBL in AM69

Dariusz Gasiorowski
Prodigy 150 points

Part Number: PROCESSOR-SDK-AM69
Other Parts Discussed in Thread: AM69

Hi Ti expert,

Could you provide actual or confirm that presented in the below link picture about  Authentication Sequence related to System Firmware is valid also for RBL (authentication operation for certificate for combined boot flow eg. for  tiboot3.bin) in AM69 HS-SE ?

https://software-dl.ti.com/tisci/esd/09_00_06/6_topic_user_guides/authentication.html?highlight=authentication#certificate-extensions

Regards,

Dariusz Gasiorowski

  • +1
    TI__Guru 69635 points

    Hi Dariusz,

    The process is same for the authentication.

    in the combined boot flow both images TIFS and bootloader get authenticated/loaded  by the ROM.

    Combined image has the outer certificate signed with active keys (SMPK/BMPK) and inner TIFS certificate signed with the TI MPK which gets authenticated by the TIFS.

    Regards
    Diwakar