Arm

The CortexA76 processor from ARM includes a dedicated cryptographic extension for accelerating cryptographic operations. This extension provides significant performance improvements for cryptography compared to executing cryptography on the main CPU cores. This article provides a comprehensive guide on how to use the cryptographic extension in the CortexA76. Introduction to the CortexA76 Cryptographic Extension The cryptographic…

The Arm Cortex-A76 is a high-performance CPU core designed for mobile, embedded and infrastructure applications. It offers several security features to help protect against attacks and ensure safe and reliable operation. TrustZone Security Extensions The Cortex-A76 implements Arm TrustZone technology to provide a hardware-level security foundation. TrustZone divides the CPU into two worlds – a…

When compiling code for ARM processors using the gcc toolchain, it is important to set the correct CPU target in order to generate optimized code. The CPU target tells gcc what ARM architecture and features to target, so it can take advantage of hardware capabilities while avoiding unsupported instructions. This article provides an overview of…

The Cortex-M3 CPU implements an instruction prefetch unit and branch prediction unit to improve performance by reducing stalls due to instruction fetches. This allows the CPU to execute instructions more efficiently by prefetching instructions before they are needed and predicting the outcomes of branches to avoid pipeline stalls. Instruction Prefetch Unit The instruction prefetch unit…

The Cortex-M3 processor has a feature called Bit Banding that allows each individual bit in a word of memory to be referenced and manipulated as if it were a byte in memory. This provides faster read and write access to individual bits compared to using regular bitwise operations. The Bit Band regions map each bit…

The Cortex-A76 processor from ARM provides powerful debugging capabilities through the use of CoreSight technology. CoreSight enables real-time access to the CPU, memory system and peripherals while debugging. This allows developers to easily trace software execution, analyze memory corruption, inspect register contents and more when debugging applications running on Cortex-A76. Introduction to CoreSight CoreSight is…

The Cortex-A76 is ARM’s latest high-performance CPU core designed for mobile computing. It offers substantial improvements in performance and power efficiency over previous ARM cores like the Cortex-A73 and Cortex-A75. The Cortex-A76 is found in some of the latest system-on-chips (SoCs) used in smartphones, tablets and other mobile devices from companies like HiSilicon, Samsung and…

The Cortex-M3 is an ARM processor core designed for microcontroller applications. It has a Von Neumann architecture with separate code and data memory regions. The memory regions are divided into different types with specific attributes defined in the Memory Protection Unit (MPU). Understanding the Cortex-M3 memory regions and their attributes is important for effective software…

Cross-compiling allows you to build code for a target platform different from the build host. For ARM Cortex-M4, this means building 32-bit code on a 64-bit x86 host computer. Cross-compiling can provide performance advantages over native compiling and allows developing for hardware you don’t have locally. Introduction to Cross-Compiling Cross-compiling involves using a compiler that…

The Cortex-A76 is Arm’s latest high-performance mobile CPU core designed for greater performance and power efficiency. In this in-depth article, we will explore the key architectural features and specifications of the Cortex-A76 to understand what makes this CPU core so powerful and efficient. Overview The Cortex-A76 is based on Arm’s new “Austin” microarchitecture, representing a…