Armv7-A Architecture Overview for New Developers (Taught by the Author)

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Arm Architecture Full Author Direct Lecture Roadmap

This lecture <Armv7-A Architecture for New Developers (Author Direct Lecture)> is a roadmap 'Arm - basic course for system software developers' This lecture is included in .

If you want to learn Arm architecture (Armv8-A, Armv7-A) systematically, it is recommended to use the roadmap (30% discount on all lectures). For reference, the Arm architecture roadmap (all author lectures) is Basic Course and Advanced Course It consists of two parts.

In the latest system software
The most important Arm architecture

The CPUs that run on most devices, except desktop computers, are Arm processors. For a long time, Arm architecture has been a must-learn topic for embedded developers. The popular Arm architectures can be broadly classified into Armv7-A and Armv8-A architectures. Among them , the 32-bit-based (Armv7-A) Arm processor (Cortex-A9, Cortex-A15) is still used in many diverse product lines (digital TV, IoT devices, electric vehicles-autonomous driving, telematics) .

If you are new to the Armv7 architecture ?

If you are a learner who is learning Arm architecture for the first time, you may feel overwhelmed by the vast amount of material. In addition, if you are a job seeker or a junior developer, you often have to prepare for a technical interview within 1-2 weeks. This course has organized the optimal curriculum so that beginners in Arm architecture can learn the core concepts in a short period of time .

Of course, a deep learning process is important to systematically learn the Arm architecture . In fact, I wrote Wow, the full course lecture below (total of 60 hours) has been chosen by many students.

🔹 If you want to learn systematically, pay attention to the lectures below!

• < Structure and Principles of Arm Architecture > - Authored book

• Structure and Principles of Arm Architecture - Part 1 (22 hours)

• Structure and Principles of Arm Architecture - Part 2 (20 hours)

• Arm Architecture Advanced Course (21 hours)

  
  

Target students 💁‍♂

This lecture - Armv7-A Architecture Overview lecture has been created for the following expected students.

Differentiating Points of the Lecture ⭐

If you successfully complete this course, you will be able to grow into an advanced systems software developer.

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This article introduces the Arm processor while explaining the process of developing system semiconductors. It also introduces the basic functions that make up the Armv7-A architecture.

Describes the structure of registers and provides an easy-to-understand explanation of how registers are organized in the Armv7-A architecture.

We will cover the CPSR register and SPSR register, which are the core registers that make up the Armv7-A architecture, in detail. We will explain the fields that make up each register in an easy-to-understand manner.

We will explain the basic structure of general-purpose registers in an easy-to-understand manner while practicing with the TRACE32 program.

The relationship between the values of the CPSR register and the processor mode is specifically explained through TRACE32 debugging.

Explains why you need to know assembly commands well with various examples (bootloader). Also explains how assembly commands are used in real projects.

Analyze the basic format and example instruction routines of assembly instructions defined in the Armv7-A architecture.

We will analyze assembly instructions in detail in various ways and explain how each assembly instruction works in an easy-to-understand manner.

Explains in detail how assembly instructions work while debugging directly with the TRACE32 program.

Introducing the core of the Armv7-A architecture, the processor mode. It explains the concept of privilege level related to the processor mode in a concrete and easy-to-understand manner.

Describes the features of each processor mode supported by Armv7-A and covers User mode. It specifically explains what software is actually running in User mode.

This article explains in detail the Supervisor mode in which the RTOS or Linux kernel runs. It also explains specifically how the Supervisor is utilized in real-world projects.

We explain the basic workings of exceptions and review the exception vector table defined in Armv7-A.

This section provides a detailed step-by-step explanation of how exceptions are handled in Armv7-A.

We will analyze in detail how actual exceptions are handled in software. We will explain in detail the relevant assembly instructions and exception vector table.

Explains how IRQ interrupt exceptions are handled in Armv7-A from a software perspective.

Through debugging practice with the TRACE32 program, we will explain in an easy-to-understand way how an exception is triggered when executing the SVC instruction.

We will explain the operating principles of the exception in detail by practicing the Undefined Instruction exception directly with the TRACE32 program.

Introduces why you should learn the Arm Procedure Call Standard (AAPCS), a convention for branching into subroutines like functions. Also explains the basic operating principles in an easy-to-understand manner.

Introduces registers related to AAPCS. Explains which registers are used to store arguments and return values passed to functions.

The operating principles of AAPCS are explained in an easy-to-understand way by practicing the BL, B, and BLX commands directly with the TRACE32 program.

An easy-to-understand explanation of the core concepts (non-secure world, secure world) and execution flow of TrustZone.

Explains in detail how the SMC command, which is the core of TrustZone, works.

An easy-to-understand explanation of the basic concepts of memory models and what normal memory is.

This section details the concept of memory reordering and the memory barriers provided by Armv7-A.

Describes the components that make up the virtual memory system and the execution flow through which virtual addresses are processed.

Based on my experience writing books and giving lectures
More in-depth and detailed than anyone else!

The author of the unprecedented 'Arm Architecture (Armv8-A, Armv7-A)' and 'Linux Kernel' books in the domestic system software field. He is also a working developer who knows the latest system software trends (electric vehicles, system semiconductors - system software) the best, and an educator who is most active in spreading knowledge in the system software field.

• Author of 'Structure and Principles of Arm Architecture for System Software Development' ( 2024, Korean Academy of Sciences Outstanding Book Award )

• Author of 'Learning the Structure and Principles of the Linux Kernel through Debugging' ( 2021, Korean Academy of Sciences Outstanding Book Award )

• 'Programmers Dev Course: Linux System and Kernel Expert' Main Instructor (1st and 2nd sessions)

  
  

• LG Electronics 'Linux Kernel' and 'Armv8 Architecture' In-house Instructor ( including domestic and overseas developers ) - (2020~2024)

I can confidently say that I am the educator who can explain the key features of the Armv7-A architecture better than anyone else in the country.

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<Structure and Principles of Arm Architecture for System Software Development - Part 1/2 Author's Lecture>

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