Linux driver development recruitment linux driver arm

what chip does arm+Linux use?

linux uses ARM chips

The present situation and development of ARM company and ARM chips are introduced. The selection method of ARM chips is introduced from the application point of view, and the arm chips with multi-core structure are also introduced. The main suppliers of ARM chips, their products and application fields are listed. Examples are given to illustrate the best ARM chip selection scheme for several embedded products.

which version of p>linux driver is better?

Ubuntu1.1 (or 11.1) is good, and the graphical interface software is all good, but the driver development has little to do with which version of Linux you use. It depends on which version of kernel environment you use. It is common to decompress a kernel when compiling. Of course, the development environment of 2.6.28 is to build it yourself, cross-compile tools and even make your own arm-linux-gcc.

is p>ARM open source?

open source.

in the new era of cloud, AI, 5G and other new technologies, the diversified architecture of the underlying chips has become an important direction for the development of the computing industry. Chips based on Arm architecture are not only widely used in various smart devices, but also continue to exert their strength in application fields such as data centers, cloud computing, 5G networks and edge products. In the second half of this year, domestic and foreign public cloud-head enterprises such as Alibaba and AWS have released the latest self-developed chips based on Arm architecture, providing diverse computing power choices for the cloud computing market. Such a strong market momentum, in addition to Arm's own low power consumption and high-performance IP technology advantages, has contributed to the extensive support of the software ecosystem. In order to bring a better development experience to software developers, Arm has done a lot of work in software ecosystems such as open source and cloud native around the ArmNeoverse platform.

"Although the ArmNeoverse platform has only been launched for three years, we have accumulated more than ten years of pre-work in the software ecosystem, which is one of the reasons why Neoverse can achieve good results in the infrastructure market as soon as it is launched." Zou Ting, global vice president of Arm Infrastructure Division, told the reporter of China Electronic News in an interview that Arm has been investing in the open source community for a long time and continuously, and it can be seen in the mainstream Linux distribution system in the current market. The number of open source projects and cloud native development projects based on Arm architecture is also in the leading position in the industry.

It is a hardware company, but it is also deeply involved in the software field

According to the latest statistics of Arm, the shipment of chips based on Arm architecture has exceeded 2 billion. The first 1 billion chips took 26 years to reach, but the second 1 billion chips took only four years, which shows that Arm architecture is popular in the new application trend of computing industry. Behind the huge market opportunities and large-scale applications, it is the result of Arm's deep accumulation and long-term investment in the software ecosystem.

Zou Ting told the reporter of China Electronic News that nearly half of Arm engineers are engaged in software development and engineering, including creating compilers and drivers to optimize the experience of customers and developers on Arm-based systems, in order to ensure that the system based on Arm architecture can safely handle the digital data enjoyed by the whole world and ensure that all software can run smoothly on the hardware based on Arm architecture.

"In the first decade of the Armv8 era, the R&D time invested by Arm software developers alone exceeded 1 million man-hours. In the first decade of the Armv9 era, the investment time of Arm software developers will probably exceed 3 million person-hours. " Zou Ting told reporters that if the R&D investment for the Arm ecosystem is included, the investment time of software developers will exceed 1.5 billion person-hours.

Committed to making the software development experience smooth

Continuing the consistent core operation concept, Arm also adopts the strategy of "giving consideration to both software and hardware" in the infrastructure field including cloud computing, taking high-performance and high-efficiency IP technology as the core, and cooperating with industrial partners to optimize the process and EDA tools. After more than ten years of continuous investment, it has won the broad support of open source and commercial software ecology, forming a complete Neoverse platform and ecology. Zou Ting told reporters that with the continuous large-scale investment in the concept of platform, the Arm infrastructure ecosystem has the characteristics of flexibility and innovation, attracting domestic Internet head enterprises such as Tencent and Alibaba Cloud to continuously optimize projects and conduct "peer-to-peer" cooperation on software based on Arm architecture.

in order to provide a smooth cloud native development experience for software developers, it is important to promote hardware standardization. Therefore, Arm has launched ProjectCassini, and plans to build a framework for building secure servers, edge gateways and other data aggregation devices by establishing platform standards and reference examples, and optimize the cloud native software stack to solve the diverse challenges brought by the cloud native ecosystem. Zou Ting told reporters that the participation of the entire ecosystem is not limited to hardware companies such as chip vendors and ODM vendors. Many OEMs, cloud service providers and other key software vendors are now fully participating in ProjectCassini.

the "standardization" advocated by p>ProjectCassini is promoted through the ArmSystemReady plan. Zou Ting said that an extensible and "out-of-the-box" blueprint is the key to realizing large-scale software deployment. In order to integrate software and hardware seamlessly, and make all kinds of operating systems and application software seamlessly "out of the box" on edge devices based on Arm architecture, Arm introduced SystemReady on the basis of ServerReady scheme to cover a wider market and operating systems.

"Besides Red Hat, VMWare and Windows, other commercial operating systems that use ArmSystemReady now include Debian, Fedora, OpenSuse and YoctoLinux." Zou Ting told reporters.

Actively participate in open source projects to stimulate innovation potential and create an industry to win * * *

"Supporting the open source software community and the innovation it drives is very important for the sustainable development of the Arm ecosystem." Zou Ting told the reporter of China Electronic News that many open source communities are booming and increasingly prosperous based on the open source ecology of Arm through its long-term continuous investment in open source communities and open source projects.

it is reported that Arm has long played an active role in promoting technology in several Linux-related foundations, and in 21, it joined hands with eco-partners to launch the Linaro open source organization. With Linaro's participation in many Linux application fields based on Arm architecture, Arm's support for open source software continues to increase.

In addition, in a project of Linux Foundation-Cloud Native Computing Foundation (CNCF), Arm is active in community activities as a platinum member. In the past, many open source projects promoted by Arm in the early days can now be self-sufficient. Zou Ting pointed out that as software developers accelerate the development of native software in the cloud, the current construction hours of continuous integration/continuous delivery (CI/CD) based on Arm hardware exceed 1 million minutes per month, and the number of container images written for Arm architecture on DockerHub exceeds 1,.

in the face of the vigorous development of China's open source ecology, Arm has also actively carried out interaction and exchanges with China's open source community. Zou Ting told reporters that in order to make China's cloud native software, especially the localized cloud native software, run faster on the Arm architecture, Arm actively participated in open source organizations, communities or projects in China, and contributed its expertise and long-term accumulated experience in the open source community to the open source community in China.

TARS, openEuler and OpenAnolis are all dynamic open source communities and projects led by China manufacturers. Zou Ting said that during the construction of these major open source communities and projects, the TARS micro-service development framework has been successfully transplanted to the ArmCPU architecture; As the governing unit of the dragon lizard community, Arm is also working side by side with the dragon lizard community to promote the coordinated evolution of software and hardware based on Arm architecture, realize related functions and optimize performance, and assist the dragon lizard community to make continuous improvements in the fields of community governance mode, development management process and version release.

"Open source knows no national boundaries, and Arm is playing a' bridge' role in the open source ecosystem." Zou Ting told reporters frankly that on the one hand, Arm hopes to bring outstanding global open source projects to China, so that these projects can take root in the China market and ecosystem; On the other hand, Arm hopes to bring the China scene to the global open source community, gather the wisdom of global developers, * * * realize the open source blueprint, and Qi Li will stimulate the potential of technological innovation, * * * creating a win-win situation for the industry.

what's the difference between p>armlinux and linux?

Compared with ARMlinux, we mean X86 linux, both of which are linux systems. However, because ARM and x86 are different CPU architectures and their instruction sets are different, the software compilation environment is different, and the software codes are generally not interoperable, so compatibility transplantation is generally needed. X86 is a classic CISC instruction set, with complex instruction set, multiple functions and serial execution, but it also means low execution efficiency and outstanding cost performance, so it is called the mainstream processor built-in instruction set of civil terminals. Both Intel and AMD's home processors are X86 instruction sets. CISC represented by X86 theoretically has 1-2 concurrent threads. ARM is the abbreviation of AdvancedRISCMachine. Its instruction set is more concise than RISC. The models that usually use ARM architecture processors are mostly embedded or portable computers. The main frequency is usually not high. Now Qualcomm's ARM architecture processor has 1.GHz, which is quite high. In addition, ARM7 follows the von Neumann structure; Since ARM9, Harvard structure has been adopted. There are about four concurrent threads in ARM in theory, and the processing efficiency is much higher than X86.

how does p>ARM use linux?

Compared with ARMlinux, we mean X86 linux, both of which are linux systems. However, because ARM and x86 are different CPU architectures and their instruction sets are different, the software compilation environment is different, and the software codes are generally not interoperable, so compatibility transplantation is generally needed. X86 is a classic CISC instruction set, with complex instruction set, multiple functions and serial execution, but it also means low execution efficiency and outstanding cost performance, so it is called the mainstream processor built-in instruction set of civil terminals. Both Intel and AMD's home processors are X86 instruction sets. CISC represented by X86 theoretically has 1-2 concurrent threads. ARM is the abbreviation of AdvancedRISCMachine. Its instruction set is more concise than RISC. The models that usually use ARM architecture processors are mostly embedded or portable computers. The main frequency is usually not high. Now Qualcomm's ARM architecture processor has 1.GHz, which is quite high. In addition, ARM7 follows the von Neumann structure; Since ARM9, Harvard structure has been adopted. There are about four concurrent threads in ARM in theory, and the processing efficiency is much higher than X86.