I am trying to run LS1021a in AMP configuration with Linux running on one core (SMP disabled) and baremetal/RTOS running on other core. I am having difficulty in setting up SGIs (IPIs) between the two cores. Both of the cores can generate SGI to themselves but they are not able to raise SGI to other core. I have looked at the GIC distributor and CPU interface initialization, distributor is enabled and both of the CPU interfaces are being enabled. Is there anything else that I should look at? what can be the barriers to pass SGIs between the cores?