# ARM_CA53_64_BIT port Initial port to support Armv8-A architecture in FreeRTOS kernel was written for Arm Cortex-A53 processor. * ARM_CA53_64_BIT * Memory mapped interface to access Arm GIC registers This port is generic and can be used as a starting point for other Armv8-A application processors. Therefore, the port `ARM_CA53_64_BIT` is renamed as `ARM_AARCH64`. The existing projects that use old port `ARM_CA53_64_BIT`, should migrate to renamed port `ARM_AARCH64`. **NOTE** This port uses memory mapped interface to access Arm GIC registers.