More 256M RAM

["Boo Geum Jung" <bgjung%etri.re.kr@localhost>]

I'd like to map 512M RAM.
So I added 256M mapping on BAT3.
And I changed 32, the hard-coded value to 512.
But the following error message occurred while system initialization.
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panic: "startup: cannot allocate VM for buffers"
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I guess PCI memory also need 512M mapping. So it should be needed to move
PCI IO mapping with hahsing, I guess. I don't know well right now.
Could you tell me what to change to map 512M RAM?

- bgjung