Small fixes

[Blue Swirl]

I changed the obp_dumb_memalloc code to use malloc and iommu/sbus code to do 
real mapping, do they still work?

I also added links to chipset documentation and rearranged Sbus code.

Initial reaction from Qemu developers about switching to OpenBIOS was very 
positive.

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[Jason Hooper]

I tried to get obp_dumb_memalloc going with malloc, but there is not enough memory available. Free will need to be implemented in order to release memory first. This probably means that the memory management needs to get a little bit more complex than what it presently is. Hence the quick and dirty hack.

Blue Swirl  wrote:  I changed the obp_dumb_memalloc code to use malloc and iommu/sbus code to do 
real mapping, do they still work?

I also added links to chipset documentation and rearranged Sbus code.

Initial reaction from Qemu developers about switching to OpenBIOS was very 
positive.

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[Stefan Reinauer]

* Jason Hooper  [060608 00:14]:
> I tried to get obp_dumb_memalloc going with malloc, but there is not enough
> memory available. Free will need to be implemented in order to release memory
> first. This probably means that the memory management needs to get a little bit
> more complex than what it presently is. Hence the quick and dirty hack.

I can confirm patch 23 breaks things. Solaris runs out of memory several
times.

Stefan