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How do I access BIOS functions from Linux (BSD, BeOS, etc)?

April 26, 2017BeOS BIOS BSD functions linux

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How do I access BIOS functions from Linux (BSD, BeOS, etc)?

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Short answer is — noway. This is protected mode, use OS services instead. Again, you can’t use int 0x10, int 0x13, etc. Fortunately almost everything can be implemented by means of system calls or library functions. In the worst case you may go through direct port access, or make a kernel patch to implement needed functionality, or use LRMI library to access BIOS functions.