Re: [Etherboot-developers] Allocating memory...

[Eric W B. <ebi...@ln...>]

ke...@us... (Ken Yap) writes:

> >void *allot(size_t size);
> >void forget(void *ptr);
> 
> Do you perhaps need a second argument to allot to be able to allocate in
> different arenas, say under 1 MB, under 16 MB (for ISA DMA), and
> anywhere else? Or maybe jsut the first and third categories.

Ouch ISA DMA, I do need to do something to handle that.  Possibly just
not letting etherboot go above 16MB, with an ISA nic.  I looked and it looks
like we have at least one ISA Nic.

I'm not at all certain what I want to do with allocating memory to do
DMA to, despite the nice effect on the bss.  I think I want a second
set of functions that are relatives to pci_alloc_consistent.  When we
we seriously start porting etherboot, the DMA rules become much more
interesting so I don't want to accidentally 

We do need to allocate a stack below 1MB.  But that is all we need so
a special one shot allocator will probably suffice.

Eric