[PATCH] new radeon memory map fixes

[Erwin Rol]

On Sun, 2006-02-05 at 09:58 +1100, Benjamin Herrenschmidt wrote:
> On Sat, 2006-02-04 at 07:41 -0800, Jesse Barnes wrote:

> > You mentioned that this might help with the VT switch problem on my 
> > pbook.  Unfortunately, it doesn't.  I have MergedFB off, but other than 
> > that I'm using stock settings.  The server seems to run ok, but if I 
> > switch to a console VT (ctl-alt-f1) then back to the X server 
> > (ctl-alt-f7) the machine hangs in a bad way and display gets corrupted 
> > (turns rainbow colors).
> > 
> > Is this a known bug?  Has anyone else seen this behavior?
> 

With the patch i am seeing VT switching problems also, without i don't
have problems.

I boot in text mode, than do a telinit 5, that works.
Than i do a ctrl-alt-f1 and i come back to text mode, but when i want to
switch back to X the display stays black. Altough ctrl-alt-del still
worked, so it was not a hard hang.

This is with an;
01:05.0 VGA compatible controller: ATI Technologies Inc RS480 [Radeon
Xpress 200G Series]

Also my memory size is still detected wrong, i got the CVS version that
has the IGP = True fix in it. But my 128 UM still shows up as 

(II) RADEON(0): Primary V_BIOS segment is: 0xc000
(--) RADEON(0): Chipset: "ATI Radeon XPRESS 200 5954 (PCIE)" (ChipID = 0x5954)
(--) RADEON(0): Linear framebuffer at 0xc0000000
(--) RADEON(0): VideoRAM: 31744 kByte (64 bit DDR SDRAM)

- Erwin