TMS570LC4357 memory mapping of Flash Banks 0 and 1

Piotr Roszak

Other Parts Discussed in Thread: TMS570LC4357

Hello,

I want to develop custom bootloader for TMS570LC4357. Because system has to be safety critical, I'd like to have option to revert to old firmware, whenever upload of new firmware fails.

Ideal solution would be to use 2 banks of flash (Bank 0 and Bank 1) to buffer and store independent bootloader and application code, linked using the same linker script, with no need to contain position independent code. Then select MCU startup bank from Bank 0 or 1 to be mapped at start address of 0x0.

Is such a startup memory mapping for Bank 0 and Bank 1 possible? Or does the MCU have to start from Bank 0?

Thanks,
Piotr

over 10 years ago

0 Charles Tsai over 10 years ago

TI__Guru**** 191886 points

Hi Piotr,
There is no way to map bank 1 to the starting address of 0x0. Can you make sure that your bootloader does not erase the sectors where the bootloader resides. You can protect the bootloader sectors by using the FBSE register in the L2FMC module.

0 Charles Tsai over 10 years ago in reply to Charles Tsai

TI__Guru**** 191886 points

HI Piotr,
Do you have more questions on the starting address for bank1? If your question is answered, can you please click the Verify Answer button? Thanks.

0 Charles Tsai over 10 years ago in reply to Charles Tsai

TI__Guru**** 191886 points

HI Piotr,
Do you have further questions? If your question is answered can you please click the Verify Button to close the thread? Thanks.

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TMS570LC4357 memory mapping of Flash Banks 0 and 1