Abstract: The cross-development environment is the foundation of embedded Linux development. The subsequent development process is almost entirely based on this environment. ARM, as a high-performance, low-cost embedded RISC microprocessor, has become the most widely used embedded processor. This article includes the hardware structure of the 32-bit ARM920T core “GEC2410” development board and the concept … Read more
With the continuous enhancement of ARM processor performance, more and more products currently tend to use a high-performance ARM platform with a single architecture to meet different functional requirements. However, in the field of industrial applications, there are still some real-time control and communication requirements that a single system architecture cannot fully satisfy. In the … Read more
"IT Talk" is a professional IT information and service platform under the Machinery Industry Press, dedicated to helping readers master more professional and practical knowledge and skills in the broad field of IT, quickly enhancing their competitiveness in the workplace. Click the blue WeChat name to quickly follow us! How to Compile LLVM/Clang on ARM … Read more
This article is reprinted from the Jishu Community Jishu Column: Jishu Reading Jishu Reading is a reading column launched by the Jishu Community. The Jishu Reading column regularly recommends books and technical management books in the fields of embedded systems, artificial intelligence, the Internet of Things, cloud computing, security, and semiconductors, and organizes community book … Read more
The development of computing over the past 30 years can be roughly divided into three stages: in 1995, Microsoft Windows opened the PC era dominated by x86 architecture CPUs; in 2007, Apple’s iPhone ushered in the smartphone era led by Arm architecture; and in 2012, the success of the convolutional neural network AlexNet based on … Read more
The previous article introduced the basic concepts of virtualization and hypervisors. To facilitate virtualization, ARM has done a lot of work, primarily defining four Exception Levels (EL). As mentioned in earlier articles about exceptions and privileges, I will elaborate a bit more here. Each exception level is numbered, ranging from EL0 to EL3, with higher … Read more
MSB: Most Significant Bit; LSB: Least Significant Bit; AHB: Advanced High-performance Bus; VPB: VLSI Peripheral Bus connecting on-chip peripherals; EMC: External Memory Controller; MAM: Memory Accelerator Module; VIC: Vector Interrupt Controller; SPI: Full-Duplex Serial Interface; CAN: Controller Area Network, a serial communication protocol; PWM: Pulse Width Modulator; ETM: Embedded Trace Macrocell; CPSR: Current Program Status … Read more
This article is selected from the Extreme Technology column “Arm Technology Blog” and is authorized to be transferred from the WeChat public account Lao Qin Talks about Chips. Previously, we sharedinterrupts and how they are handled in the ARM architecture and GIC-600 related knowledge; this article will introduce redistributor related knowledge. Keep it simple, keep … Read more
We all know that for mobile processors, the core of their performance lies in the CPU architecture and GPU cores. For example, ARM Cortex A76 is inherently stronger than A75, while Cortex A55 is certainly better than A53. In terms of GPU, Mali-G73MP6 (where the suffix “MP+x” indicates the number of compute cores) outperforms Mali-G72MP6, … Read more
ARM’s design is the foundation of most mobile device processors worldwide. Major mobile chips, including Qualcomm Snapdragon, Apple A series, Huawei Kirin chips, and Samsung Exynos, are all built on ARM technology. Today, let’s follow the steps of Kewa to learn more about ARM! 1. What is ARM? ARM first refers to a company (the … Read more