Number of resets in 1.1.5

[Stefan Reinauer]

Hi,

LinuxBIOS 1.1.5 currently does a couple of resets on the HDAMA before it
actually boots the payload. Is this elementary for getting HT to work
properly, or is it based on the current algorithm? To keep boot times as
short as possible, it'd be better to only do one reset and gather all
setup functions that need reset before that.

Stefan

Stefan Reinauer  writes:
> Hi,
>
> LinuxBIOS 1.1.5 currently does a couple of resets on the HDAMA before it
> actually boots the payload. Is this elementary for getting HT to work
> properly, or is it based on the current algorithm?

A reset is necessary for the change in settings to take effect.

The current algorithm is stupid and makes all of those decisions locally.
> To keep boot times as
> short as possible, it'd be better to only do one reset and gather all
> setup functions that need reset before that.

Right.  I am not quite certain what the most maintainable technique 
really is.

I am tempted to put off initializing most of RAM until someplace
in the main body of the code, and have a variable I can set to tell
the code I would like to do a reset.

Mostly I figured make it work properly today.  Optimize it tomorrow.

Eric