Also, if USB Legacy mode is enabled there may be background SMIs that are generated to break into the BIOS System Management Mode and provide legacy support for keyboard and mouse.
My understanding is that the CPU may also generate SMIs for other purposes, such as manipulating power management settings if the hardware is overheating.
Best regards,
Rob
2010/11/4 Rajat Sharma <fs.rajat@xxxxxxxxx>
As I can remember, Linux uses BIOS only at the bootup time, after that on a running kernel, there is no role of BIOS routines. Please refer to Understanding Linux Kernel for specific details. It also has one appendix on Linux Boot-up sequence which depends on BIOS. Linux has its own drivers for controlling IOAPIC and PCI drivers etc.Rajat2010/11/4 àààà <anuj01@xxxxxxxxx>Hi list,
I am just exploring how much the linux is dependent on BIOS. I wanted to know :
1. Which information linux uses from BIOS ( some sort of tables like
MP tables, ACPI tables) and for what purpose?
2. Whether linux uses BIOS routines to program and initialize the
different chips (e.g. IOAPIC, PIR, PCI devices etc.) or not?
Please provide if there is any document or link which explains the
clear interface between BIOS and linux?
Thanks & Regards,
--
Anuj Aggarwal
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: :â :ÂÂ # apt-get install hakuna-matata
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