Hi everyone,
I'm trying to understand the architecture underneath normal world and realm world.
So in FVP, I can boot the normal world first, then boot the realm world to run application in it. But by doing so, I can't debug the application since I can only do it in Arm DS.
If I want to create a realm VM, I will need to invoke libraries from RME(RMM) to create a realm world VM and then it counts as running an application in realm world.
My question is:
what's the difference between running an application in realm world in FVP and writing a C++ program using RME libraries but I run the application in normal world in FVP.
Do they count as all running applications in realm world or not?
Much appreciated if anyone can help me!
Thank you so much!
My following up question is:
Apparently in FVP, I boot the FVP first, and then I use lkvm to boot the realm VM, and then I can run the application inside the realm VM.
However, I don't see anyway I can actually write the c++ program so that it can boot a realm VM? Since FVP is just a software simulation stack, does it mean that each company who acquires ARM Armv9 architecture will have its own way of implementing RME/RMM?