How to run app on internal RAM with OTFAD ?

[samet-san]

Hello 

I want to run my application on internal RAM. And I use OTFAD. 

I want to copy it to internal RAM  and run it after OTFAD decrypt application

How can I do it ? 
Thank you

[diego_charles · Accepted solution]

Hi @samet-san 

I understand that you want to store an encrypted image on XIP flash and then execute it from SRAM, please let me know otherwise.

Since the OTFAD can only decrypt from FlexSPI, we may need a bootloader to copy decrypted  image from flash to internal SRAM. Let me check for the simplest solution we could have available.

If you have more details to add regarding your requirements, please let me know.

Diego

[samet-san]

Thank you Diego

It will be better if i start to make a bootloader.  

[diego_charles]

Hi @samet-san 

Ok, yes, that is an alternative! We have some bootloader codes avaiable, eventougth they do not support your application use case, they can be used as a reference to boot to the application, they are the flashloader and the NXP SBL. 

Diego