Hello,

I'm trying to understand why "warm reboot" is not currently implemented in TF-A for qemu targets. I.e. in case of qemu armv8 boot atf->optee->uboot->linux and then reboot, cpu jumps to BL31 qemu_system_reset() function which just calls panic(). I'm wondering why loading images from this stage is not happening? Something similar to bl2_load_images()->load_image() to load uboot and optee os again and run them with bl31_main()?

If I understand "CPU reset" spec [1] correctly, warm boot from reset vector in BL31 again to Non-Secure world has to work.

[1] https://github.com/ARM-software/arm-trusted-firmware/blob/master/docs/design...

Best regards, Maxim.