AM2634: How to optimize secure boot time on AM2634?

Hi Ni Hua,

TIFS-MCU reads the QSPI flash directly via 200MHz frequency via CPU which is very limiting. My suggestion is to read the data directly via EDMA from R5F CPU which executes at 400MHz. This will give you 15x better performance in-terms of read. The accelerator performance will be much optimized for AM2634 if running the same on RAM.

SHA Performance from R5F - https://software-dl.ti.com/mcu-plus-sdk/esd/AM263X/latest/exports/docs/api_guide_am263x/DATASHEET_AM263X_EVM.html#autotoc_md387

AES Performance from R5F - https://software-dl.ti.com/mcu-plus-sdk/esd/AM263X/latest/exports/docs/api_guide_am263x/DATASHEET_AM263X_EVM.html#autotoc_md384

Note : This recommendation is still not the best performance. This will further be improved once the DTHE is integrated with EDMA.

All the above mentioned optimizations and integrations are planned for 10.00 release due Aug 2024.

Best Regards,
Aakash

Hi Aakash,

     Because of the urgency, could you please provide the patch for optimizing the secure boot time first?

thanks.

Hi Aakash,

Here are the questions that need assistance:

1、Is it feasible to port the FLASH driver to TIFS and then use the flash_read interface to read the APP image for verification?
2、In the SBL, direct access to the FLASH address is not possible; flash_read interface needs to be called first. Why is it that TIFS can directly access it? Currently, the SBL directly sends the APP address in FLASH to TIFS for verification.

thanks.

Moving the thread to Closed State because of the inactivity. Please create new thread if issue still not addressed.

Best Regards, Shiv