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Embedded Linux Primer: A Practical, Real-World ApproachWe take a detailed look at the mechanisms and processes used during kernel initialization. We describe the Linux kernel command line and its use to customize the Linux environment on startup. With this knowledge, you will be able to customize and control the initialization sequence to meet the requirements of your particular embedded system. 5.1. Composite Kernel Image: Piggy and Friends At power-on, the bootloader in an embedded system is first to get processor control. After the bootloader has performed some low-level hardware initialization, control is passed to the Linux kernel. This can be a manual sequence of events to facilitate the development process (for example, the user types interactive load/boot commands at the bootloader prompt), or an automated startup sequence typical of a production environment. We have dedicated Chapter 7, "Bootloaders," to this subject, so we defer any detailed bootloader discussion to that chapter. In Chapter 4, "The Linux Kernel: A Different Perspective," we examined the components that make up the Linux kernel image ...» | Код для вставки книги в блог HTML
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