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[FAQ] TDA4VL: ECC Test for SDL_MCU_CPSW0_ECC_AGGR fails on HS device

Josiitaa RL
Mastermind 46866 points
Part Number: TDA4VL


In the ecc_func_app, the ECC test for SDL_MCU_CPSW0 ECC aggregator fails on an HS device, causing a data abort. This test passes on a GP device.

UART error log:

The M4 core log denotes that a firewall exception is triggered:

7380.CPSW_ECC_issue_M4_log_complete.txt

  • +1
    TI__Mastermind 46866 points

    Hi,

    Upon investigation, it has been determined that the exception is initiated when trying to access the 0x407090C0 register. Interestingly, this occurs even before the SDL application is loaded. The ROM is responsible for setting this firewall exception, and the triggering of the exception takes place prior to the loading of TIFS.

    The mis-configuration of the firewall region for CPSW is the underlying reason for this issue, as it has whitelisted all transactions.

    Please apply the following patch on SDK 8.6 to resolve the issue, using the below mentioned steps -

    cd $RTOS_SDK/sdl/
    git init
    git add .
    git commit -m "init commit"
    git am $PATH_TO_PATCH_SHARED_BELOW

    5618.0001-Fixed-ECC-test-for-SDL_MCU_CPSW0_ECC_AGGR-causes-dat.txt

    NOTE: The same approach of configuring the CPSW ECC region to enable transactions and using the Sciclient_firewallSetRegion() API used to configure firewall region can be used across all the other SDK versions.

    Regards,

    Josiitaa