Hi guys,
I'd like to ask for advice regarding adding EFI RT support to the Arm's FF-A bus
in U-Boot.
The objective is to enable the FF-A messaging APIs in EFI RT to be used for
comms with the secure world. This will help getting/setting EFI variables
through FF-A.
The existing FF-A APIs in U-Boot call the DM APIs (which are not available at
RT).
Two possible solutions:
1/ having the entire U-Boot in RT space (as Simon stated in this discussion[1])
2/ Create an RT variant for the FF-A APIs needed.
These RT variant don't call the DM APIs
(e.g: ffa_mm_communicate_runtime, ffa_sync_send_receive_runtime, ...)
What do you recommend please ?
[1]:
https://lore.kernel.org/all/capnjgz21qlnsfccj9rpqxefqf-njmbf3kyudbboc6wuqxqt...@mail.gmail.com/
Cheers,
Abdellatif
