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cortex A7 interrupt handling.

We are working on the STM32MP157 device . We had written the bare metal drivers for the USART its working fine . We struct at interrupt handling . We are able to serve the software interrupt when we going to the Shared peripheral interrupts we are not getting interrupt. For the UART interrupt We are able to see the interrupt status in the GICD but its not going to the core's ISR routine. For this what may be the issue.