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Unusual time in booting secondary cores on ARMV8 platform (Zynq MPSoc)

Hi all,

I am working on UltraZed-EG Starter Kit and trying to boot secondary A53 core from primary A53 core with an SMC call with 0xc4000003 as the identifier. I have measured the time taken to reach the entry point of secondary core and surprisingly it is approximately 466ms. Can anyone tell me the reason because it is a huge amount of time. Complete kernel in unicore (A53) is booting in just 74ms and due to this 466ms of delay in booting the secondary cores the smp configuration of our OS is taking 574ms and I need to reduce it as much as possible.