TMS570LS3137: Write 0xFFFFs to clear/prevent ECC errors.

Neal OHara

Part Number: TMS570LS3137
Other Parts Discussed in Thread: UNIFLASH

As seen in the related question, I would like to clear/prevent ECC errors by using Uniflash with Auto ECC on to write 0xFFFFs to the unused sectors of flash memory.

Due to legacy code and the strong barrier to any source code change, I would like to be able create a singular filled hex file for the unused sectors. Is there a convenient way to generate a valid hex file for Bank 0 Sectors 5 to end with only 0xFFFFs? Or, as an alternative, Sectors 2 through 14, leaving only Sector 0 to be programmed with our CBL?

Thank you for the advice.

over 4 years ago

+1 QJ Wang over 4 years ago

TI__Guru**** 197426 points

Hi Neal,

You can create a CCS project and calculate/program the ECC for the whole flash using linker cmd. Load this ECC project using uniflash or CCS first, then load the CBL to the sector 0.

0 Neal OHara over 4 years ago in reply to QJ Wang

Prodigy 90 points

Thank, however a new project, as I understand, requires a main() as far as I know?

Is there a way to create a programmable hex file that is literally nothing but 0xFFFF?

0 QJ Wang over 4 years ago in reply to Neal OHara

TI__Guru**** 197426 points

Yes, it has main() function. It is OK since it is only located in sector0 and will be erased when you loading your CBL to sector 0.

0 Neal OHara over 4 years ago in reply to QJ Wang

Prodigy 90 points

Thank you, I understand that method will work, programming one and then the other. It is a valid solution.

I am asking for the filled hex file method, to see if there is a possibility to be able to program the Sector 0 CBL, and a separate Sector 1-14 filled hex at the same time.
So, is it possible to make a filled hex file? My understanding says nothing prevents it, but I am unsure how to do so.

0 QJ Wang over 4 years ago in reply to Neal OHara

TI__Guru**** 197426 points

Hi Neal,

You may get help from CCS/compiler forum. I don't know how to fill 0xFFFF to remaining flash area when loading original bootloader image.

0 Neal OHara over 4 years ago in reply to QJ Wang

Prodigy 90 points

Thank you for the advice.

Arm-based microcontrollers

Arm-based microcontrollers forum

TMS570LS3137: Write 0xFFFFs to clear/prevent ECC errors.