December 2015
Beginner to intermediate
418 pages
10h 1m
English
Content preview from Mastering Embedded Linux ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Moving from bootloader to kernel
When the bootloader passes control to the kernel it has to pass some basic information to the kernel, which may include some of the following:
- On PowerPC and ARM architectures: a number unique to the type of the SoC
- Basic details of the hardware detected so far, including at least the size and location of the physical RAM, and the CPU clock speed
- The kernel command line
- Optionally, the location and size of a device tree binary
- Optionally, the location and size of an initial RAM disk
The kernel command line is a plain ASCII string which controls the behavior of Linux, setting, for example, the device that contains the root filesystem. I will look at the details of this in the next chapter. It is common to provide the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.