about pci net controller without EPROM onboard

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Thanks for the help , i found out that the kernel was not configued well for pci net card .

Now i am boarding U-BOOT and kernel(linuxppc) to my own board (based on MPC5200,have a i82551 on board without 

EPROM).After i set the eth1addr ,U-boot could tftp files through the i82551 chip :

PCI:   Bus Dev VenId DevId Class Int
        00  18  8086  1209  0200  00
        00  1a  1057  5803  0680  00
In:    serial
Out:   serial
Err:   serial
Net:   FEC ETHERNET, i82559#0

But after the kernel bootup ,i could not find eth1 ,message during bootup as follow :

POSIX conformance testing by UNIFIX

PCI: Probing PCI hardware
PCI: Cannot allocate resource region 0 of device 00:1a.0

Intel(R) PRO/100 Network Driver - version 2.3.38-k1
Copyright (c) 2004 Intel Corporation
PCI: Enabling device 00:18.0 (0006 -> 0007)
e100: Invalid Ethernet address
e100: Failed to initialize, instance #0

How can i make the chip active ?