[PATCH] ARM:Orion5x: Fix panic at boot for PCI IO reservation

[Andrew Lunn]

On Mon, Jun 18, 2012 at 10:06:34AM +0200, Andrew Lunn wrote:
> Orion5x, and all other orion based systems have a PCI(E) IO window
> size of 1Mbyte. Recent changes to mach/io.h mean that by default the
> kernel does not allow such large windows, it refuses to reserve that
> much resource space, triggering a panic.
> 
> Reduce the PCI(E) IO window size to the normal 64K.

It turns out this patch does not work...

There are two PCI devices on Orion5x. So the first one takes all the
available 64K IO space and the second one fails it allocation.

We need to put back parts of mach/io.h to increase the available size to
128Kbytes.

It has been said in another email, the plan is to put the IO window at
one fixed address. How will this work for devices with multiple PCI
busses? Most Orion chips for have two separate PCI busses.

	Thanks
		Andrew