Tabla de Contenidos: “…Building and Installing -- Using BusyBox -- User Space Initialization -- Stage 1 Boot Loader -- Stage 2 MLO -- U-Boot -- Linux Kernel -- Systemd -- User Space Initialization, the "Old Way" -- Resources -- 15 U-boot boot loader and getting ready to ship -- U-Boot -- Background -- Installing and Configuring U-Boot -- Testing a New U-Boot -- The "Sandbox" -- Device Trees -- Putting the Application in eMMC Flash -- Resources -- 16 Source code control - GIT -- Background -- Introducing git -- File states and life cycle -- Branching and merging -- Configuring git -- Graphical git -- Creating a new repository -- Resources -- 17 Linux and real-time -- Hard versus Soft Real-Time -- Why Linux is Not Real-Time -- Measuring Latency: Cyclictest -- Improving Linux Latency -- Two Approaches -- Preemption Improvement -- Interrupt Abstraction -- A Third Way: Xenomai -- Working With PREEMPT_RT -- Wrap Up -- Resources -- Appendix A: U-boot Commands -- Information Commands -- Memory Commands -- NAND Flash Memory Commands -- Execution Control Commands -- Download Commands -- Environment Variable Commands -- Environment Variables -- Appendix B: Why Software Should Not Have Owners -- Index -- Back Cover…”

“…Für dieses Husarenstück, als erster U-Boot-Fahrer mit dem Ritterkreuz ausgezeichnet, folgten sieben weitere erfolgreiche Feindfahrten auf U 47, die ihn mit einem Gesamtversenkungserfolg von über 160.000 BRT zu einem der erfolgreichsten deutschen U-Boot-Kommandanten des 2 Weltkriegs machte. …”
Sumario

Tabla de Contenidos: “…Comparing various bootloadersDelving into the bootloader cycle; The U-Boot bootloader; Booting the U-Boot options; Porting U-Boot; The Yocto Project; Summary; Chapter 4: Linux Kernel; The role of the Linux kernel; Delving into the features of the Linux kernel; Memory mapping and management; Page cache and page writeback; Process address space; Process management; Process scheduling; System calls; The Virtual File System; Interrupts; Bottom halves; Methods to perform kernel synchronization; Timers; Linux kernel interaction; Development process; Kernel porting; Community interaction…”

Tabla de Contenidos: “…Cover -- Copyright -- Credits -- About the Author -- About the Reviewer -- www.PacktPub.com -- Customer Feedback -- Table of Contents -- Preface -- Chapter 1: Installing the Developing System -- Embedded world terms -- Systems' overview -- The BeagleBone Black -- The SAMA5D3 Xplained -- The Wandboard -- Installing a development system -- Setting up the host machine -- Basic tools -- The cross-compiler -- Setting up the BeagleBone Black -- Serial console for the BeagleBone Black -- U-Boot (with MLO) -- Linux kernel for the BeagleBone Black -- Debian 8 (jessie) for the BeagleBone Black -- Setting up the SAMA5D3 Xplained -- Serial console for SAMA5D3 Xplained -- U-Boot (with boot.bin) -- Linux kernel for SAMA5D3 Xplained -- Debian 8 (jessie) for SAMA5D3 Xplained -- Setting up the Wandboard -- Serial console for the Wandboard -- U-Boot (with SPL) -- Linux kernel for the Wandboard -- Debian 8 (jessie) for the Wandboard -- Setting up the developing system -- BeagleBone Black - USB, networking, and overlays -- SAMA5D3 Xplained - USB and networking -- Wandboard - USB and networking (wired and wireless) -- Common settings -- Summary -- Chapter 2: Managing the System Console -- Basic OS management -- File manipulation and Co -- echo and cat -- dd -- grep and egrep -- tr and sed -- head and tail -- od and hexdump -- file -- strings -- strace -- Package management -- Searching a software package -- Installing a package -- apt-get and friends versus aptitude -- The deb files -- Managing the kernel messages -- A quick tour into the bootloader -- The environment -- Managing the storage devices -- MMC -- Managing the flash -- GPIO management -- Accessing an I2C device -- Loading files from the network -- The kernel command line -- Summary -- Chapter 3: C Compiler, Device Drivers, and Useful Developing Techniques -- The C compiler…”

“…L'ouvrage décrit les derniers outils utilisés dans le monde Linux embarqué tels que l'émulateur de matériel QEMU, l'environnement de développement Buildroot et OpenEmbedded, le chargeur de démarrage Barebox, nouveau-venu après U-Boot, les extensions temps réel Xenomai et PREEMPT-RT, ou encore la bibliothèque graphique embarquée Qt4 développée par Nokia. …”

Tabla de Contenidos: “…1.4 Benefits of Using Linux -- 1.4.1 Free of Cost -- 1.4.2 Time to Market -- 1.4.3 No "Vendor Lock-in" -- 1.4.4 Highly Stable Operating System -- 1.4.5 Low Maintenance -- 1.4.5.1 Supporting Software Releases After Shipping the Product -- 1.4.5.2 Keeping Your Own Drivers up to Date With the Latest Kernel -- 1.5 Linux Architecture -- 1.5.1 Linux Kernel Components -- 1.5.1.1 Device Driver Framework -- 1.5.1.2 Schedulers -- 1.5.1.3 Interrupt -- 1.5.1.4 Memory Management -- 1.5.1.5 Communication Protocol Stack -- 1.5.1.6 User Interface (UI) -- 1.6 Build Environment -- 1.6.1 Kernel Compilation -- 1.6.2 Root Filesystem -- 1.6.2.1 Yocto -- 1.7 Customizing Linux -- 1.7.1 Low Memory Footprint -- 1.7.2 Boot Performance -- 1.7.3 High Throughput Performance -- 1.7.3.1 Core Affinity -- 1.7.3.2 Interrupt Coalescing -- 1.7.3.3 User Space Mapping of Buffers -- 1.7.3.4 User Space Drivers -- 1.7.4 Latencies -- 1.8 Linux Development and its Open-Source Ecosystem -- 1.8.1 Linux Versions -- 1.8.2 Long-Term Support (LTS) Linux Version -- 1.8.3 Related Open-Source Communities -- 1.8.3.1 Linux Foundation -- 1.8.3.2 Linaro -- 1.8.4 Linux-Based Distributions -- 1.8.4.1 Android -- 1.8.4.2 Ubuntu -- 1.9 Coding Guidelines -- 1.10 Code Review in the Upstream Community -- 1.11 License -- 2 U-Boot -- 2.1 U-Boot and its Applicability to Several Types of Devices -- 2.2 Major Features of U-Boot -- 2.2.1 Multiple Boot Source Support -- 2.2.2 Shell (User Interface) -- 2.2.3 Environment Variables -- 2.2.4 Scripts -- 2.2.5 Stand-Alone Applications -- 2.2.6 Operating System Boot Commands -- 2.2.7 Autoboot -- 2.2.8 Sandbox U-Boot -- 2.3 U-Boot Directory Organization -- 2.4 U-Boot Architecture and Memory Footprint -- 2.4.1 Single-Stage Boot Loader -- 2.4.2 Two-Stage Boot Loader -- 2.5 Fast Boot Approach -- 2.6 Secure Boot…”