Bootloader is a piece of code that runs before any operating system is running.
Bootloader are used to boot other operating systems, usually each operating system has a set of bootloaders specific for it.
Bootloaders usually contain several ways to boot the OS kernel and also contain commands for debugging and/or modifying the kernel environment.
In this talk we will concentrate on Linux bootloaders.
Since it is usually the first software to run after powerup or reset, it is highly processor and board specific
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