How to Access SDRAM ?

[Misbah khan]

I have an external SDRAM How could i access the last 4MB location of SDRAM
through my driver.

I have used ioremap() and it works during the initial testing i suspect that
since it is the real memory and not io memory hence we should not use it .

Can any one brief me on this .

Thank you 

--Misbah <><
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