[U-Boot-Users] PCI MEM I/O space allocation

York Sun yorksun at freescale.com
Tue Jan 9 17:53:34 CET 2007

On Tue, 2007-01-09 at 17:39 +0100, Wolfgang Denk wrote:
> In message <1168358761.2903.19.camel at localhost.localdomain> you wrote:
> >
> > > I wouldn't do this lightly...
> > 
> > All right. I will do it in my branch and not to submit patch for this.
> This is definitely not the result I wanted to acchieve :-(

My first attempt was to find out if there was a particular reason to
allocate from bottom up. If changing it causes too much trouble, we can
keep it there until really necessary.

> > > What exactly is the problem you're trying to fix? The fact that it's
> > > different is IMHO not enough of a reason to change it.
> > 
> > The problem is some bridges have 64K limitation on I/O space, which
> > requires special care in allocation. I am fixing it in the kernel.
> Maybe we can make this optional, so we can leave  unaffected  systems
> untouched, and/or give board maintainers time for a slower migration?

We can leave it untouched until all the fixing is done. We will decide
from there.



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