Re: Linux support for IBM ThinkPad Disk shock prevention update...

[Alejandro Bonilla]

05-04-14 at 16:58 -0400, Shawn Starr wrote:

> > > > We just need to figure
> > > > out to get the specs from IBM
> > > >        
> > > Best bet is probably reverse engineering it...
> > >      
> >
> > Lee, 
> >
> > I know this is far from easy... but, What do we need to do this? I haven't
> > seen such a cooler feature in a Thinkpad like the HDAPS. (Well, maybe the
> > fingerprint reader) But, how can we / I help, if this is ever done?
> >
> >    
>
> Please see:
>
> http://dxr3.sourceforge.net/re.html
>
> I have discovered several previously unknown emu10k1 hardware features
> using this procedure to reverse engineer the Windows drivers, including
> a per channel half loop interrupt, and added support to the Linux driver
> for some of them.
>
> It may be much easier to find the read and write register subroutines
> than in the above guide.  The Windows driver I was working with had
> exactly one subroutine that used the inb, inl, inw, outb, outw, outl
> instructions, so it was trivial to set breakpoints to log all the port
> I/O.  I later found it was even easier, the version of SoftIce I was
> using allows you to set I/O breakpoints, so all you need to start
> logging the register activity is the port.
>
> I had a little trouble loading the IDA symbols into SoftICE at first,
> just because the first few scripts I found on the net didn't work.
>
> Some devices use memory mapped IO, I have no idea how you would RE
> these.  Maybe someone else has some pointers?
>
> Lee
>  

The only thing I got back from IBM was:

      Please be advised, that the e-mail forum you
      have reached is provided for non-technical
      support and web registration issues of IBM.
      ave reached is provided for non-technical

      Please send your research proposal to IBM at
      T.J Watson Research Center at 914-945-3167.

I don't think I'm l33t enough like to call there and discuss for what we 
are looking for. Also they will probably tell me, " Ahh, well we 
currenly don't want to release anything because of legal issue" (Like I 
was already told)

- Alejandro
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