TM4C1230 bootloader

Victor Zheng

Team

I am developoing the bootloader on TM4C1230 which have 32 KB Flash and 12 KB SRAM. Could we did not move the code to SRAM, and used the boot code in one 1KB flash block to update the code in another block flash? Thank you.

Victor

over 9 years ago

0 Amit Ashara over 9 years ago

TI__Guru**** 244440 points

Hello Victor,

By not moving the boot loader to SRAM there is a catch-22 situation when the boot loader itself needs update, how can it erase itself and update itself.

Regards
Amit

0 Victor Zheng over 9 years ago in reply to Amit Ashara

TI__Intellectual 1550 points

Hi, Amit

You mean it is possible that we can run the bootloader code in flash to update other code in different flash block?

what is the catch-22 situation?

Thank you

Victor

0 Amit Ashara over 9 years ago in reply to Victor Zheng

TI__Guru**** 244440 points

Hello Victor,

The boot loader can update itself. So it would be impossible for the code to erase itslf and flash itself without being relocated/

Regards
Amit