[U-Boot-Users] Data abort during type 0 pci scan

[Ryan Pipkin]

Hello,

I am attempting to setup the pci_controller device for my target board.
PCI Type 0 configuration addresses are directly mapped into local memory 
so I am not using the indirect method.
I have routed everything to be dword accessed like 
board/dave/common/pci.c:189
It appears that the pci_hose_scan_bus uses type 1 addresses when 
scanning the pci bus.
In my read_dword: and write_dword I convert the dev (type 1 address) 
into an appropriate type 0 address.

Is this the correct method for doing type0 scanning ?


In addition, the ixp2800 processor will data abort when scanning a type 
0 address that is not present.
In our simple bootloader we implemented the data abort handler to catch 
these exceptions and continue to scan.
I have not been able to find an example in the uboot code of a data 
abort that is anything but fatal.

Has anyone else run into this ? 

Thanks.





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