Embedded Linux · Kernel · FPGA · 5G/6G

An Engineer's Notebook: Embedded, Kernel, 5G/6G

Personal technical notes and short research articles on embedded Linux, the Linux kernel, programming, FPGA and wireless networking (5G/6G), written in both Vietnamese and English.

Vu Tang · Firmware Team Leader, 5G/6G Project at Viettel High Tech

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207 notes10 topicssince 2019updated 2026-10-29

Quote by Paulo Coelho, the author of "The Alchemist"

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Topics

EmbeddedPetalinux, Yocto, U-Boot, PTP, DPDK and board projects.

• Linux Embedded Overview
• Hardware & Projects
  • HW Platforms
  • Zynq
  • i.MX6 (DART-MX6)
  • IMX8 WIP
  • Raspberry Pi 3B
  • Rockchip (RK3399)
• Boot & Bring-up
  • Bootloader Overview
  • U-Boot
  • GRUB
  • U-Boot on Zynq
• Platform Management (BMC)
  • BMC Overview
  • IPMI
  • Redfish WIP
  • OpenBMC WIP
• Build System
  • Yocto
    • Yocto Overview
  • Xilinx Petalinux
    • Petalinux Overview
    • Petalinux 2017
    • List of Petalinux Images
• Application Dev
  • Common Tools
    • Makefile
    • CMake
    • Version control Concept
    • Git
• Open Source Packages
  • Overview
  • Web Server
    • Overview & So sánh
    • lighttpd
    • Nginx
    • Mongoose / CivetWeb
    • Backend
      • PHP
• Networking
  • Overview
  • Fundamentals
  • Linux Networking Stack
  • Link Layer & Hardware
  • Tools & Debug
  • Linux PTP
  • DPDK WIP
  • Network Block Device
• Device & Peripherals
  • EEPROM
  • Storage & Memory
    • Loại bộ nhớ (NOR/NAND/eMMC)
  • GNSS
    • GNSS Overview
    • GNSS trên Linux (gpsd, NMEA, 1PPS)
    • NMEA 0183
• Tips & Linux Basics
  • Tips
  • Unsorted
  • Commands

Linux KernelDevice drivers (I2C, SPI, GPIO, UART, ALSA) and kernel debugging.

• Linux Kernel Overview
• Core & Internals
  • Kernel Release Process
  • Kernel Data Structure
  • Kernel Boot Process
  • Kernel Command Line
  • Kernel Space, User Space Interfaces WIP
    • Overview
    • System Call
    • Device File & ioctl
    • Pseudo Filesystem
    • mmap, UIO, dma-buf
    • Async Notification
    • Netlink
    • Advanced Interfaces
    • ABI & Security
    • Lab
  • Kernel Module
• Driver Model & Device Tree
  • Linux Device Driver Overview
  • Device Tree
  • Platform Device
  • Character Device
• Bus Drivers
  • I2C Subsystem
  • SPI Subsystem
  • SPI Subsystem (Advanced)
  • PCIe WIP
  • JESD WIP
• Hardware Frameworks
  • GPIO
  • Common Clock Framework
  • UART
  • Audio
• Tracing & Debug
  • FTrace
  • Dynamic Debug

VirtualizationHypervisors (KVM, Hyper-V, Jailhouse), containers (Docker) and embedded use cases.

• Overview
• Foundations
  • CPU Virtualization
  • Memory Virtualization
  • I/O Virtualization
• Hypervisor
  • Hypervisor & Hyper-V
  • KVM & QEMU
  • Partitioning Hypervisor
• Container
  • Container Internals
  • Docker
  • Docker Compose
• Sandbox & micro-VM
• Real-time & vRAN
  • Real-time KVM tuning
  • vRAN trên VM
• Embedded Use Cases
  • Docker cho môi trường build
  • QEMU cross-arch

Wireless / RAN5G/6G RAN: CU/DU/RU and splits, Open Fronthaul, PTP synchronization, L1 acceleration and the 6G roadmap.

• Overview
• Standards Bodies
  • ITU
  • 3GPP
  • IEEE
  • O-RAN Alliance
• Spectrum
  • Frequency Bands
• Architecture
  • RAN Architecture & Splits
• Air Interface & Procedures
  • Protocol Stack & States
  • Frame Structure & Resource Grid
  • Initial Access
  • Attach / Registration & Session
  • Connected Mode & Mobility
• Physical Layer (PHY)
  • OFDM
  • NR Numerology & Resource Grid
• Fronthaul & Sync
  • Open Fronthaul
  • Synchronization
• L1 & Acceleration
• Non-Terrestrial Networks
  • NTN Overview
• Integrated Sensing & Communication
  • ISAC Overview
• 6G Roadmap

SecurityThreat model, CVE management, TLS / SSH, secure boot and TrustZone for embedded devices.

• Overview
• Vulnerability Management
  • CVE
  • InsightVM (Rapid7)
• Cryptography & Transport Security
  • TLS
  • HTTPS
  • SSH
  • IPsec
• Secure Boot & Trusted Execution
  • Secure boot và TrustZone

ProgrammingC, data structures, design patterns, perf, multi-threading, shell script and Python.

• C
  • C introduction
  • C toolchain
    • Overview
    • Build pipeline
    • Object file và ELF
    • Linking
    • Từ executable đến process
    • Build nhiều file
    • Cross compile
    • Debug và phân tích
• DSA
  • Index
  • Linked List
  • Queue
• Coding Convention
  • Overview
  • Linux Kernel Coding Style
• SQL
• Linux Programming Interfaces
• Design Patterns
• Multi-threads
• Perf
• Shell Script
• Python

Chip & SoCComputer architecture (ISA, microarchitecture, SoC) and IC design (RTL, FPGA, timing analysis, verification).

• Overview
• Computer Architecture
  • Overview
  • ISA
    • Overview
    • RISC-V
    • Arm
    • x86
  • Microarchitecture
    • Overview
    • Pipeline
    • Cache
    • Memory Hierarchy
    • Storage (HDD/SSD)
    • RAID
  • SoC / System
    • Overview
    • RISC-V Server SoC Spec
• IC Design
  • Overview
  • RTL / HDL
    • Overview
  • FPGA
    • Overview
    • Xilinx IPCore
  • Static Timing Analysis
  • Verification
    • Overview

Hardware DesignBoard-level hardware: passives (resistors, capacitors), power, PCB layout, SMT manufacturing and board bring-up.

• Overview
• Passives
• Power
• PCB Design
• Manufacturing & SMT
• Bring-up & Debug

NotesBook notes, bookmarks, Mkdocs and Markdown.

• Book & Materials
  • C Programming
  • Linux Programming
  • Linux Device Driver
  • Linux Kernel
  • Linux Embedded
  • Data Structure & Algorithms
  • Others
• Math & Physics WIP
  • Overview
  • Linear Algebra
  • Probability & Statistics
  • Calculus & Fourier
  • Signals & Systems
  • Discrete Math & Boolean
  • Circuits & Electromagnetics
  • Semiconductor Physics
• Bookmarks
• Mkdocs Tool
• Markdown Language
• What's next

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