Hello,

I am working with a port of FreeRTOS on Arm64 soc , which is running at EL1, my goal is to perform a function call that will execute in EL0,

I have come to understand that the only way for the EL switch is to set the correct M bits of the spsr_el1…

Hi all i trying do transition from EL3 to EL2 exception ,but after ERET of EL3 mode it change the mode to EL2 , but as soon as when it will execute first instruction of EL2 , then It goes to Exception ...

This is happen for every secure to non secure transition…

I have successfully moved from EL3 to EL2. After doing some initialization I am trying to move from EL2 into EL1 with a very simple guest image. My process looks like:

• Map EL1 memory into EL2
• Copy EL1 image to RAM
• Initialize sctlr_el1 = 0x30d00800