this post was submitted on 25 Sep 2024
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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ARM systems don't have the whole ACPI thing to describe what hardware is where. Linux has to bodge together its view of the system with a devicetree instead. If you don't know what device IP blocks are integrated into the SOC (and locked behind an NDA), good luck blindly guessing. You don't even get EFI booting, you get shit like "the rpi gpu runs its own proprietary bootloader lol".