pci-pci bridge initialisation code

hi all
i have ported linux on my MPC8240 processor.
but as i am not having bios kind of stuff so kernek
should initialise all the peripherals sitting on the
pci bus.
i have intigrated the code, but code for mapping the
pci-pci bridge is not with me.
so i cam not see the device which are sitting on bus
after the bridge.
can anybody tell me where i can get this code.
thanks in advance
with king regards
Bhupi


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