I have legacy SBSFU based system running on an stm32f429 for a few years now, based on the STM32F413ZHT6 demo code that was present in the package.
I am now interesting to using the KMS feature of SBSFU but after reading um2622 /seeing https://www.youtube.com/watch?v=YjiNaTHQp2s I am a bit at a dead end on how to start as none of the kms files seem to be compiled in my bootloader.
I am now getting the impression there is no KMS support at all on an stm32F4, this based on the fact that for example Figure 14 with the project folder structure in um26222 shows images with _KMS but this does not exist for the stm32f4 version I started from.
So is KMS a no-go on STM32F4 because it uses features not available on STM32F4 ?
Looking at Figure 4 SBSFU security IPs vs. STM32 series of um2262 this seems to be the case if I understand that correctly (it seems to be needing this Firewall thing) ?
If it is not supported, I would suggest adding this information at the very start of section 4 Key management services, that seems to be pretty essential to know before you dive any further into it.
