When is it safe to start using ioremap?

[Chris Dumoulin]

At what point in the linux boot sequence can/should you start using 
ioremap to get a virtual address to hardware? Early on (in head_4xx.S), 
I'm setting up a TLB entry to access my hardware, but eventually my TLB 
entry will be overwritten, and at this point I would like to call 
ioremap to get an address for accessing my hardware. I'm having trouble 
figuring out when the original TLB entry will be overwritten (can that 
even be determined?), and at what point I can start calling ioremap.

Any help is appreciated.

Cheers,
Chris Dumoulin
-- 
*--Christopher Dumoulin--*
Software Team Leader

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