[LinuxBIOS] FILO with only hdb

[ron minnich]

anyone tried this? I can't get anywhere with a board with only hdb. I
did some hacking in the filo ide driver but I am sure I got it wrong.
Any ideas here?

thanks

ron

[Myles Watson]

Does hdb only mean slave and no master on IDE-0 ?

Why not just make it the master?

Myles
> anyone tried this? I can't get anywhere with a board with only hdb. I
> did some hacking in the filo ide driver but I am sure I got it wrong.
> Any ideas here?
>
> thanks
>
> ron

[ron minnich]

On 9/27/07, Myles Watson  wrote:
> Does hdb only mean slave and no master on IDE-0 ?
>
> Why not just make it the master?

The msm800sev has an IDE with hda and a CF slot which is hdb. I would
like to run CF only. I just don't know how to do it (yet). I wonder if
there is some trick you can play on the 5536?

Why they did not just put the CF slot on secondary is anyone's guess ...

ron

[Myles Watson]

> On 9/27/07, Myles Watson  wrote:
> > Does hdb only mean slave and no master on IDE-0 ?
> >
> > Why not just make it the master?
>
> The msm800sev has an IDE with hda and a CF slot which is hdb. I would
> like to run CF only. I just don't know how to do it (yet). I wonder if
> there is some trick you can play on the 5536?
>
> Why they did not just put the CF slot on secondary is anyone's guess ...

I think it should be possible.  Either in the ADLO bochs/bios/rombios.c or
in the filo etherboot-5.x/src/filo/drivers/ide_x.c (I think those paths are
right) code there is a comment about CD-ROMs being set up as slaves without
masters.  I'll look for it tomorrow if you haven't found it by then.

Myles

[Tom Sylla]

ron minnich wrote:
> Why they did not just put the CF slot on secondary is anyone's guess ...

My guess is that it is because there is no secondary IDE on 5536. :)

There isn't anything built into 5536 to make the drive 0/drive 1 swap easy.

One easy solution is to just ground CSEL on the CF connector with a 
little rework. That will force it to be master.

[ron minnich]

On 9/27/07, Tom Sylla  wrote:
> One easy solution is to just ground CSEL on the CF connector with a
> little rework. That will force it to be master.

is there any reason in hardware that hdb can NOT work if there is no hda?

ron

[Tom Sylla]

On 9/28/07, ron minnich  wrote:
> is there any reason in hardware that hdb can NOT work if there is no hda?

Nope, it is only a problem with software.

[Ward Vandewege]

On Thu, Sep 27, 2007 at 05:14:58PM -0700, ron minnich wrote:
> anyone tried this? I can't get anywhere with a board with only hdb. I
> did some hacking in the filo ide driver but I am sure I got it wrong.
> Any ideas here?

I've only ever been able to make filo work with 'hda' - the first drive on
the first bus. Though sometimes filo likes to call it hde (on mcp55-based
systems, for instance).

Thanks,
Ward.

[Corey Osgood]

ron minnich wrote:
> anyone tried this? I can't get anywhere with a board with only hdb. I
> did some hacking in the filo ide driver but I am sure I got it wrong.
> Any ideas here?
>
> thanks
>
> ron

Weird, I've been booting off hdc for a while now with the jetway, only
major difference against the current svn is Peter's speedup patch. It
boots either with or without hda connected. Perhaps something in that
patch fixed it? I haven't tried without it, or with hdb/hdd

Just out of curiosity, are those adapters any better performance-wise
then the cheap IDE->CF adapters newegg sells? I'm considering getting
the add-on board for the jetway, and wondering if it's worth it.

-Corey

[ron minnich]

On 9/27/07, Corey Osgood  wrote:
> Weird, I've been booting off hdc for a while now with the jetway, only
> major difference against the current svn is Peter's speedup patch. It
> boots either with or without hda connected. Perhaps something in that
> patch fixed it? I haven't tried without it, or with hdb/hdd

remember, hdc is master on secondary channel. much easier.

ron