RT1050: using BEE address remapping to swap FW in XIP

[leopoldgemsch]

Dear all,

we are analyzing how it would be possible to swap between different application FW in a FlexSPI NOR FLASH to be executed without need of relinking/downloading the binaries.

The .MX RT105x has a BEE which supports two address areas to be mapped. Does someone know, can this feature being used to remap a memory area within the FlexSPI AHB bus space to swap between two different application FW executed in XIP mode?

For any response many thanks

[FelipeGarcia]

Hi,

Flash remapping feature is only available with RT106x devices. You can find more information about this in the following application notes.

https://www.nxp.com/docs/en/application-note/AN12240.pdf

https://www.nxp.com/docs/en/application-note/AN12255.pdf

For RT1050, it don't support flash remap same as RT1060, but BEE can do similar function, so if you enable BEE in your application, you can implement image remapping by BEE offset.

Best regards,

Felipe

[leopoldgemsch]

Dear Felipe,

many thanks for this hint.
- Is it possible to use the remapping of BEE without having the FW image encrypted?
- Is there an example existing, how this would work?

Many thanks for a replay

[FelipeGarcia · Accepted solution]

We do not have an example of this but you can find more information about this feature in the BEE chapter of the Secure Reference Manual.

Regards,

Felipe