• State Suggested Answer
  • Locked Locked
  • Replies 4 replies
  • Answers 2 answers
  • Subscribers 22 subscribers
  • Views 1399 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

__main hard fault when LTO enabled with bootloader

Arran

My system has a STM32F2xx bootloader(0x0800 0000) and an app (0x0800 4000).

 1. No bootloader(only app, placed at address 0x0800 0000), the app works as expected. 

 2. No LTO enabled, bootloader jumps to  __main successfully and app is loaded at power up. 

When Link time optimisation (LTO) option in KEIL is enabled for app (0x0800 4000), a hard fault is encountered in __scatterload. Here is a snapshot of fault and saved register in my fault hander (fault handler has a breakpoint instruction).

0