[LinuxBIOS] [v3][PATCH] stage0 and stage1 cleanup and improvements.

ron minnich rminnich at gmail.com
Fri Jul 20 18:21:49 CEST 2007

On 7/19/07, Stefan Reinauer <stepan at coresystems.de> wrote:
> * ron minnich <rminnich at gmail.com> [070720 06:45]:
> > we want stage2 printk and other code to use the stage0 support code
> > because stage 0 has done some setup -- there is some state there --
> > that we'd like stage 2 to inherit. I think.
> Not sure what state you mean.
> If it is only about state, we could pass that through memory explicitly
> after initram. (LBtable)

One bit of state is the linuxbios log buffer that I want -- someday --
to appear via linux dmesg commands. Yep, bios startup messages should
be seen from Linux. I did this once in 2000 and it was really, really

Other bits are console state, baud rate, and so on. We want to know
what those bits are, or just inherit them without changing them.
Possibly careful design would make this work.

I think we're working to a solution here, but let's go with 'printk in
stage1' for now until we're sure what we're doing will work. Juergen's
idea is pretty interesting.


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