In the previous article, I introduced single-chip systems and operating systems based on single-chip kernels. In this article, I will continue to introduce the security analysis of operating systems based on microkernels. Android Operating System On August 22, 2017, Google officially released the final version of Android 8.0, officially named: Android Oreo. On December 5, … Read more
This article begins by defining real-time kernels and introducing real-time operating systems, explaining their characteristics. It then discusses monolithic kernels, layered kernels, and microkernels from the perspective of kernel functionality and structure. Finally, it introduces the VxWorks Wind kernel, which possesses microkernel characteristics. 1.1 Overview of Real-Time Kernels “Real-time” refers to the ability of a … Read more
Phoenix-RTOS is a lightweight, high-performance real-time operating system (RTOS) designed to provide a reliable and efficient runtime environment for embedded systems. It supports multiple architectures and is known for its simple design and powerful features. This article will delve into the core features, architectural design, and application scenarios of Phoenix-RTOS, providing readers with a comprehensive … Read more
Click the card below to follow Arm Technology Academy This article is selected from the Jishu Community column “Embedded Inn”, authored by RC. This article will briefly describe the process of porting the Circle driver framework to a custom microkernel operating system as a user-mode driver process. Original link: https://stdrc.cc/post/2021/01/22/porting-circle/ 1. Introduction What is Circle? … Read more
Analysis of HarmonyOS Architecture The overall structure of HarmonyOS adopts a layered design, from bottom to top: Kernel Layer: Multi-core, selecting the appropriate OS kernel for different resource-constrained devices, masking multi-core differences. System Service Layer: Core capabilities, providing services to application layer programs through the framework layer. Application Framework Layer: Multi-language framework Application Layer: System … Read more