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AM263PX-RESTRICTED-SECURITY: MPU Firewalls

Sravya Kalluri
Prodigy 215 points

Part Number: AM263PX-RESTRICTED-SECURITY
Other Parts Discussed in Thread: SYSCONFIG

Hi Team, 

    1.   From trm i understood there are few intiators list r5 core's, HSM , DebugSS, CPSW, ICSS, EDMA . 
However, I noticed DebugSS, EDMA are not listed under initiators list in syscfg->MPU firewall settings. Is there any specific reason ??
    2. In SysConfig → MPU Firewalls, under “Priv IDs Allowed”, there is an option called EXTERNAL_ID.
       what exactly EXTERNAL_ID represent?? which initiator does it correspond to ?
 WhatsApp Image 2026-05-30 at 12.00.53.jpeg
      

  • 0
    TI__Mastermind 27222 points

    Hi,

    Let me check and get back early next week.

    Regards,
    Shaunak

  • 0
    TI__Prodigy 540 points

    Hi Sravya,

    1. EDMA is not listed as an initiator because, EDMA is triggered by one of the CPU cores and all the EDMA transactions carry the PrivID of the CPU core that initiated the EDMA transaction. About DebugSS, it hasn't been enabled as an initiator, but it is possible to do so. Note that, the HSM will still be locked from JTAG access.

    2. The idea behind having the EXTERNAL_ID field is to cover the PrivIDs that haven't been configured. 

    Thank you,
    Naren