How to Cross-Compile C Programs for ARM & x86
Cross-compile C code for embedded ARM and x86 targets: master gcc vs arm-linux-gnueabihf-gcc, set sysroot paths, and verify output via file command.
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Linux Kernel
Linux Kernel
ARM ELF Binary Section Headers: .text, .data, and .bss
Understand ARM ELF binary file structures: inspect section headers using readelf -S, analyze .text code, .data initialized variables, and .bss.
How to Compile Custom Linux Kernel for Android AOSP
Compile a custom Linux kernel for Android AOSP on Ubuntu: setup ARCH=arm64 CROSS_COMPILE toolchain, configure defconfig, build Image.lz4-dtb.
How to extract android boot.img ?
boot: The boot partition contains a kernel image and a RAM disk combined via mkbootimg. In order to flash the … Read more
Building Custom Embedded Linux Kernels: From Defconfig to Production Deployment
Master custom embedded Linux kernel compilation: configure defconfig, strip bloated subsystems, tune menuconfig, compile DTBs, and boot on ARM hardware.
Fix Yocto QA Issue : “was already stripped, this will prevent future debugging !”
Fix Yocto BitBake build warning "QA Issue: binary was already stripped": configure INSANE_SKIP += "already-stripped" or prevent premature binary stripping.
Cross Compile Busybox for ARM
Cross-compile BusyBox for ARM embedded targets: configure defconfig, set ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-, build statically, and install.
Step-by-Step Guide to Porting Linux Kernel to New Embedded Hardware
Porting the Linux kernel to new embedded hardware is a complex but rewarding task. It allows you … Read more
Optimize Performance in Embedded Linux Applications: Best Practices and Tips
Optimize C/C++ application performance on embedded Linux: profile CPU bottlenecks using perf, reduce RAM footprint, use static linking, and tune LTO.
Understanding sysfs and USB: A Comprehensive Guide for Developers
In the world of Linux, sysfs and USB play crucial roles in system management and device interaction. … Read more
Set Up a Development Environment for Embedded Linux
Set up an embedded Linux development environment on Ubuntu: install cross-compilers, QEMU, GDB, Yocto dependencies, and TFTP boot servers.
Top 10 Embedded Linux Projects to Try in 2024: Innovative Ideas for Developers
Explore top embedded Linux projects: build custom Yocto bootloaders, smart home IoT gateways, camera vision nodes, and real-time kernel controllers.
Cross Compilation of Linux kernel for Raspberry Pi 3 and Load It
For this post, we assume that you already have a working root filesystem as we did in … Read more
Flash Yocto Images to Raspberry Pi SD Card Using DD: Step-by-Step Guide
Flash custom Yocto Linux build images to Raspberry Pi SD cards: identify /dev/sdX disk nodes, execute dd bs=4M status=progress, and verify boot partition.
DTS (Device Tree) File Syntax
A Device Tree Source (DTS) file is used in the context of the Linux kernel to describe … Read more
How to print logs on Single Line using PrintK in Kernel ?
In Linux kernel or device drivers if you are using printk, by default every message we pass … Read more
Writing First Linux kernel Module
We will try to understand the simple kernel driver, its compilation and ways to load the kernel … Read more
Identify and Set Maximum values for ABS_X/ABS_Y OR ABS_MT_POSITION_X / ABS_MT_POSITION_Y
Configure Linux input event maximum axis bounds for ABS_X/ABS_Y and ABS_MT_POSITION_X/ABS_MT_POSITION_Y touchscreen drivers using evtest and libinput.
How Yocto build Software Package from source code
Understand Yocto Project package compilation stages: trace do_fetch, do_unpack, do_patch, do_configure, do_compile, and do_install in BitBake.
How to force panic Linux kernel intentionally ?
When you are working with Linux kernel internals or device driver programming, there are chances you see … Read more
How initrd is mounted by Linux kernel ?
Lets first try to understand what are the ways to mount the root file system, Altough the … Read more
Understanding : “kernel panic – not syncing – attempted to kill init”
When the kernel gets into a situation where it does not know how to proceed (most often … Read more
Kernel startup entry point / how Linux kernel boots
We will consider our hardware platform as ARM, so the kernel startup entry point code is at … Read more
Understanding Linux Device Tree Syntax (DTS)
DTB = Devicetree blob. Compact binary representation of the devicetree.DTC = Devicetree compiler. An open source tool … Read more