bios interaction with linux kernel after uncompression.

bios interaction with linux kernel after uncompression.

[Bhagyashri Bijwe]

Hi,
     During bootstrapping,  bios provides services like video ,hard
drive services, memory sizing, PCI table to linux kernel.
     After uncompression of kernel , Does linux kernel have any
interaction with bios?
    I know that most of work is done by linux device driver. 
    What is dependency of running linux on bios ?
  Thanks in advance,

-- 
***********************************************
   Ms Bhagyashri Bijwe
     Project Eng.
     Networking and Internet Software Group,
     Centre for Research and Development,
     Pune,India
     Ph.25694000 Ext-484/462
     B.E.( Computer Sci. and Engg. )

Re: bios interaction with linux kernel after uncompression.

[randy_dunlap]

On Wed, 6 Jul 2005 12:02:26 +0530 Bhagyashri Bijwe wrote:

| Hi,
|      During bootstrapping,  bios provides services like video ,hard
| drive services, memory sizing, PCI table to linux kernel.
|      After uncompression of kernel , Does linux kernel have any
| interaction with bios?
|     I know that most of work is done by linux device driver. 
|     What is dependency of running linux on bios ?
|   Thanks in advance,

As little as possible after boot/init.

That means that BIOS is used for APM mode selections
if APM is being used and for ACPI state-switching.
Oh, I guess we have to acknowledge that hidden SMI code
also, but Linux doesn't use it AFAIK, it's just there
and being executed.

Those are all that I know of before being fully awake.

---
~Randy