Re: battable size

[Tsubai Masanari <tsubai%iri.co.jp@localhost>]

> BAT[UL] should have fixed size (currently, at least).

I mean that a port has a port-specific fixed size (mask).
BATU(vaddr, shft) and BATL(raddr, shft, wimg) are needed to support
other battable size.  Sorry for confusion.

(macppc has rather complex mapping:
00000000-               normal RAM
80000000-90000000?      PCI MEM
90000000-a0000000?      PCI MEM
f2000000-f2010000       PCI I/O
f3000000-f4000000       PCI MEM
f4000000-f4010000       PCI I/O
f5000000-f6000000       PCI MEM
ff800000-ff900000       Open Firmware
ffc00000-               AAPL,ROM

so it needed 256 or 1024 battable entries if we use BATs to map...)