SBSFU - Improve boot time not working

STsch.1 · ‎2022-01-11

Hi,

When I have a look at the AN5056(https://www.st.com/resource/en/application_note/dm00414677-integration-guide-for-the-xcubesbsfu-stm32cube-expansion-package-stmicroelectronics.pdf), there is a possibility on page 39 to improve the boot time. That is exactly what I want to achieve, but it seems, the code of the SBSFU changed over time and it looks not anymore as in the AN5056:

Now in the sfu_boot.c, there is much more code available and if I try to comment out as in the AN5056, I always get a critical handle failure:

How is it possible to improve the SBSFU boot time in the newest version?

Bubbles · ‎2022-01-13

Hi @STsch.1 ,

failing signature may mean that something is not generated with up-to date code. When making a change in the code, especially with all the security already enabled, you may need to rebuild everything, starting with the SEcore.

BR,

J

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STsch.1 · ‎2022-01-21

Ok, it was indeed my mistake, I commented out too much code. Thank you.