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EL3 execution

segfault

Hello Experts,

I need to operate a custom app at EL3 on a Cortex-A53 core running on the i.MX8 based  platform. The bootflow shows me that a hand-off from ATF (BL31) to U-boot (BL33) is where the transition from EL3 to EL2 occurs for Uboot and it stays at EL2.

Can anyone suggest a procedure or mechanism to keep the Uboot and custom apps running at EL3? Are there any examples ?

Thanks in advance.

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