On 1/5/23 10:34, Peter Maydell wrote:
This board disables QEMU's own PSCI implementation and relies on a guest EL3 firmware to provide PSCI. So how will that EL3 firmware implement the "power on" to bring up the secondaries? QEMU has the APIs to allow implementation of a model of a hardware power controller (target/arm/arm-powerctl.h) but as far as I can see the sbsa-ref board doesn't yet implement one, so if you start the CPUs in the powered-off state there's no way for them ever to be powered on.
Sorry, I've been working on a machine where the power controller _was_ implemented so I missed that that's not present in sbsa-ref.
-- Rebecca Cran
