ARMv8-A

Introduction to the Arm Cortex-A55 CPU

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Introduction to the Arm Cortex-A55 CPU

The Cortex-A55 processor is a mid-range low-power processor that utilizes the Armv8-A architecture. The diagram below illustrates the functional structure of this processor.Functional OverviewThe system registers of this CPU primarily provide the following functions: System control and configuration Memory Management Unit (MMU) configuration and management Cache configuration and management System performance monitoring Generic Interrupt Controller … Read more

Line-by-Line Interpretation of Armv8-A Assembly SMP Boot Code

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Line-by-Line Interpretation of Armv8-A Assembly SMP Boot Code

This article provides a line-by-line explanation of the Armv8-A assembly code sourced from Arm® Development Studio. It focuses on the boot sequence of the AArch64 MPCore processor. This code initializes the system from Exception Level 3 (EL3, typically the Secure Monitor mode) and transitions to Exception Level 1 (EL1, typically the OS mode), during which … Read more