MPC8641D PCI-Express problem
marco.stornelli at coritel.it
Tue Mar 25 19:02:35 EST 2008
do you remember my problem with the pci-express? I have an mpc8641d_hpcn
(rev. 2.0) board connected via pci-express with the Xilinx ML555
evaluation board. I'm using the 2.6.24 kernel. I'm observing this
1) I turn on the board and I stop the U-boot
2) I load the FPGA microcode
3) I start the system
4) I load the driver module and I read a version register in the FPGA
5) The system crashes with a "machine check exception: transfer error
7) same procedure (without load the FPGA again)
8) now I can read the registers!
If I repeat the procedure again it doesn't work anymore. I think it's a
problem with pci-express controller. Have you got any suggestions?
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