Tool/software:
Hello,
We are developing an HSM application on AM62A using mcu_plus_sdk_am62ax_09_02_00_38 and HSM_care_package_kit_v00.08.00. We encountered intermittent communication failures when using Secure Proxy-based IPC between the DM core (R5) and HSM (M4).
We implemented a periodic message exchange where the DM-R5 core sends a message every second via Secure Proxy, and HSM responds in the interrupt handler. However, the communication randomly stops after a few successful exchanges, with HSM no longer responding.
To debug the issue, We enabled SYSFW Trace logs, and after restarting the device, we observed that the A-core prints error logs as shown below, but no logs are seen from MCU, DM cores, or HSM.
The SBL logs indicate normal boot behavior.
Below is the log printed by Trace.
FWL Exception 0x1008000
0x90000
0x400A78
0x0
0xFF922D4
0x8
0x421110
0x820024
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4100001A
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4100001A
0x41070000
0x410800BF
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4100001A
0x421205
0x820024
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4380001A
0x420002
0x820024
0x4003007
0x4400927
0x42C120
0x820024
0x42C000
0x820024
0x42C400
0x820024
0x42C100
0x820024
0x42C101
0x820024
0x42C120
0x820024
0x42C100
0x820024
0x42C101
0x820024
0x42C001
0x820024
0x420021
0x820024
0x42000C
0x820024
0x4F8A00FF
0x4F8B0001
0x4F80001C
0x4F8A00FF
0x4F8B0001
0x4F8000C8
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4F8A00FF
0x4F8B0001
0x4F80001E
0x4F8A00FF
0x4F8B0001
0x4F8000C7
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4F8A00FF
0x4F8B0001
0x4F80001E
0x4F8A00FF
0x4F8B0001
0x4F8000C7
0x420002
0x820024
0x4003007
0x4400927
FWL Bit 0x4
Except0x421110
0x820024
ion addr 0x45B09000
FWL Exception 0x1008000
0x90000
0x400A78
0x0
0xFF922D4
0x8
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4100001A
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4100001A
0x41070000
0x410800BF
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4100001A
0x421205
0x820024
0x4F8A00FF
0x4F8B0001
0x4F80001A
0x4380001A
0x420002
0x820024
0x4003007
0x4400927
0x42C120
0x820024
0x42C000
0x820024
0x42C400
0x820024
0x42C101
0x820024
0x42C100
0x820024
0x42C120
0x820024
0x42C120
0x820024
0x42C000
0x820024
0x42C120
0x820024
0x42C000
0x820024
0x42C100
0x820024
0x400002
0x80000A
0x0x42C001
0x820024
4003007
0x4400927
0x400200
0x80000A
0x42C101
0x820024
0x4F8A00FF
0x4F8B0040
0x4F80001C
0x4F8A00FF
0x4F8B0040
0x4F8000C8
0x4003007
0x4400927
0x42C001
0x820024
0x509000
0x9000FD
0x42C100
0x820024
0x509000
0x9000FD
0x509000
0x9000FD
0x509000
0x9000FD
What do these SYSFW Trace logs indicate? Are these errors related to Secure Proxy or firewall permissions?
What could be causing the HSM IPC to become unresponsive?
Why do logs from MCU, DM, and HSM disappear when SYSFW Trace is enabled?
Thank you for your support.
Best regards,
Yang
