9 Feb
2022
9 Feb
'22
2:05 p.m.
The problem I have is that I boot a custom SOC into u-boot and when u-boot tries to boot linux I get an error exception when u-boot calls armv8_switch_to_el2 to enter linux.
So that means that U-Boot runs in EL3, is that the first and only firmware that you run? I think the EL3 part of U-Boot is not widely used and tested beyond the very few platforms that use it.
FWIW, the u-boot on the kontron_sl28 (which is a A72 core) is running in EL3. But it's a layerscape so it might be worth looking in arch/arm/cpu/armv8/fsl-layerscale/ if there is anything special.
-michael