AM2432: Optimize ECC SDL

manmath senapati

Part Number: AM2432

Hi Team,

Currently we have a challenge of memory overflow and we are exploring the options to optimize the code size. In that process we came across the tables and memory used by ECC SDL.

Tables available in file “sdl_ecc_soc.h” are taking almost 15KB space in the rodata section of the memory. We know that It contains predefine data that are used during ECC handling. But Our requirement is to only use SDL_MCU_M4FSS0_BLAZAR_ECC aggregator and test ECC functionalities in DRAM area of M4. We tried to remove other aggregators data from the file and could reduce the size to less than 5KB.

Can you clarify below points:

Is it ok to remove the unused aggregator tables? What is the impact on functional safety certification, if we do so?
If yes, Is it possible to provide us a slimmer version of SDL, with SDL_MCU_M4FSS0_BLAZAR_ECC aggregator only?

over 2 years ago

0 Krithika Ravi over 2 years ago

TI__Mastermind 21517 points

Hello,

1. Yes, modification of the delivered SDL source will void the functional safety certification, and you will need to have the delta SW re-certified.

2. This customization will not be possible as it will require TI to re-certify the libraries, and maintain multiple separate codebases.

Regards,
Krithika

0 Luis Vazquez over 2 years ago

Prodigy 110 points

Hello Krithika,

0 Luis Vazquez over 2 years ago in reply to Luis Vazquez

Prodigy 110 points

Thanks for your fast response.

Could you please explain the process for a delta SW re-certification ? What is required and ownership?

Thanks

Luis

0 Krithika Ravi over 2 years ago in reply to Luis Vazquez

TI__Mastermind 21517 points

Hello Luis,

Once you have made the required changes in the SDL, you can check it against the checksum TI provides and present the delta to TUV or another certification body for re-certification. This change should have undergone all the process for safety like MISRA-C, dynamic analysis compliance etc. The ownership will be with the customer making the changes.

Regards,
Krithika

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AM2432: Optimize ECC SDL