(Click the blue text above to quickly follow us) Source: Vamei (@Vamei) Link: http://www.cnblogs.com/vamei/archive/2012/09/05/2672039.html The process of booting a computer is a mysterious one. We simply press the power button and see a progress bar or lines of output on the screen until we reach the login interface. However, the booting process is also exceptionally … Read more
Video Collection (Introduction to Linux Character Device Drivers) 1 Linux Kernel Source Website www.kernel.org 2 Types of Drivers a Character Drivers b Block Drivers c Network Drivers 3 System Boot Process 1 U-Boot Boot 2 Kernel Boot 3 File System Boot 4 Differences Between Static and Dynamic Driver Loading: 1 Different Compilation Options y Driver … Read more
In today’s rapidly advancing technology, System on Chip (SoC) shines like a brilliant star, widely illuminating various fields such as smartphones, smart homes, and automotive devices, becoming the core force driving continuous innovation in modern electronic devices. It intricately integrates the CPU, GPU, memory, and various communication modules into a compact chip, condensing the “smart … Read more
RTOS (Real-Time Operating System) Real-Time Characteristics: The ability to respond to external events and execute tasks within a specified time frame, such as in industrial control, ensuring precise timing for sensor signal acquisition and actuator control operations, thereby maintaining the stable and efficient operation of automated production lines. Task Scheduling Mechanism: Understanding preemptive scheduling (where … Read more
Do you really understand the boot process of embedded systems? 😏😏😏 The boot process of an embedded system refers to the entire sequence of events from the power-off state to the normal operating state when the system is powered on. In embedded systems, the design and implementation of the boot process are crucial for the … Read more
(Click the public account above to quickly follow) Author: David Both, Translation: Linux China/penghuster linux.cn/article-8807-1.html If you have good articles to submit, please click → here for details Have you ever wondered how an operating system can execute applications? This article will unveil the mysteries of operating system booting and startup. Understanding the operating system … Read more
1. What is BIOS The term BIOS first appeared in 1975, and it stands for Basic Input Output System. It truly gained prominence with the launch of the IBM PC in 1981, marking the beginning of a tumultuous history. The IBM PC system generally consists of three parts: hardware, software, and the middleware BIOS, with … Read more
System Command Hub: /bin • Core Positioning: Stores the core executable instruction set of the system (abbreviated as Binaries), covering the basic command toolchain used frequently. • Analog Reference: Similar to the C:\Windows\System32 instruction set storage area in Windows environments. Boot Loader Hub: /boot • Core Components: Contains Linux kernel images, hardware driver modules, and … Read more
1. Introduction The RK3399 is a high-performance SoC launched by Rockchip, widely used in smart devices, embedded systems, and industrial control applications. Understanding its boot process is crucial for developers to optimize system boot time, customize firmware, and troubleshoot boot issues. This article will detail the boot process of the RK3399, including the BootROM, bootloader, … Read more
Recently, the eMMC of the product encountered some issues. In response to these issues, I read the relevant sections of the Embedded Multi-Media Card (eMMC) Electrical Standard (5.1) JESD84-B51 and recorded the eMMC boot process as follows. The above figure shows the eMMC power-on process, with the following steps: 1. Power on VCC and VCCQ, … Read more