Re: [PATCH 1/1] Change the default link address for pSeries zImage kernels.

On Mon, 2008-06-23 at 11:30 +0200, Adrian Reber wrote:

On Mon, Jun 23, 2008 at 06:13:23PM +1000, Tony Breeds wrote:

quoted

Currently we set the start of the .text section to be 4Mb for pSeries.
In situations where the zImage is > 8Mb we'll fail to boot (due to
overlapping with OF).  Move .text in a zImage from 4MB to 64MB (well past OF).

We still will not be able to load large zImage unless we also move OF,
to that end, add a note to the zImage ELF to move OF to 32Mb.  If this
is the very first kernel booted then we'll need to moev OF manually by
setting real-base.

Does this change also affect kernels for SLOF based systems (JS20, JS21,
Bimini/Powerstation, QS21, QS22)?

Yes, they use the same zImage.

To avoid exactly that problem SLOF moved to a bit below 256MB on all
those platforms (about 220MB). There should be still enough space
between 64MB and 220MB to boot large kernels. It is, however, decreased
by 60MB.

That should leave plenty of space...

Cheers,
Ben.