aarch64 Exception Level Sw itch from EL1 to EL0

Hi Expert, I am working on a simple kernel and test it on Qemu which supports RasPi3. During the boot level. Ras Pi goes to EL3 level, and I set spsr_el3 to 1 and elr_el3 to kernel_main and then use...
aarch64 Exception Level Sw itch from EL1 to EL0

Hi Expert, I am working on a simple kernel and test it on Qemu which supports RasPi3. During the boot level. Ras Pi goes to EL3 level, and I set spsr_el3 to 1 and elr_el3 to kernel_main and then use...
how does ARMv8 switch to run application(EL0) from kernel(EL1)?

hi experts, I am studying the ARMv8 exception levels. I have a question about ELs. EL1 is described to run OS kernel and EL0 is application level. The exception levels change only occur on exception...
how does ARMv8 switch to run application(EL0) from kernel(EL1)?

hi experts, I am studying the ARMv8 exception levels. I have a question about ELs. EL1 is described to run OS kernel and EL0 is application level. The exception levels change only occur on exception...
Armv8-A A55 baremetal boot exception level from EL1 to EL0

I was studying the A55 baremetal boot. I changed the execution level from EL3 to EL2 then to EL1 can work very well,but EL1 can not change to EL0.I use the spsr_eln and elr_eln register with the instrcuction...