U-Boot 1.3.0 with Linux 2.6.25-11 on MPC8641D - Machine check exception

Tue Sep 16 00:55:30 EST 2008

Hello everybody,

I am trying to put into operation a proprietary board using a freescale 
MPC8641D. I use U-boot 1.3.0 and Linux kernel 2.6.25-11.
On one PCIe-bus I have a PEX8518 followed by a PEX8114. A USB-controller 
is connected to the 8114.

    +--------------------------+
    |                          |
    |       MPC 8641 D         |
    |                          |
    +--------------------------+
                  |
               PEX8518 <----------------- PCIe switch
                  |
               PEX8114 <----------------- PCIe to PCI bridge
                  |
               ISP1562 <----------------- USB controller

The PCIe-components are scanned correctly, resources (mem and IO) are 
assigned (correctly as far as I understand),
but on the first read access to a control register of the usb-device the 
kernel generates "Oops: Machine check, sig: 7 [#1]".
Writing to the same register does not produce an "Oops".

The PCIe bus is defined in dts file as follows (dump from U-boot):

    pcie at d4008000 {
        cell-index = <0>;
        compatible = "fsl,mpc8641-pcie";
        device_type = "pci";
        #interrupt-cells = <1>;
        #size-cells = <2>;
        #address-cells = <3>;
        reg = <1000>;
        bus-range = <4>;
        ranges = [02 00 00 00 00 00 00 00 40 00 00 00 40 00 00 00 00 00 00 
00 40 00 00 00 01 00 00 00 00 00 00 00 c0 00 00 00 c0 00 00 00 00 00 00 00 
00 10 00 00];
        clock-frequency = <1fca055>;
        interrupt-parent = <40000>;
        interrupts = <2>;
        interrupt-map-mask = [00 00 ff 00 00 00 00 00 00 00 00 00 00 00 00 
07];
        interrupt-map = [00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 
00 04 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 02 00 04 00 00 00 00 00 01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 03 00 04 00 00 00 00 00 02 00 00 00 01 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 04 00 04 00 00 00 00 00 03 00 00 00 01];
        pcie at 0 {
            reg = [00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00];
            #size-cells = <2>;
            #address-cells = <3>;
            device_type = "pci";
            ranges = [02 00 00 00 00 00 00 00 40 00 00 00 02 00 00 00 00 
00 00 00 40 00 00 00 00 00 00 00 40 00 00 00 01 00 00 00 00 00 00 00 c0 00 
00 00 01 00 00 00 00 00 00 00 c0 00 00 00 00 00 00 00 00 10 00 00];
        };
    };
    pcie at d4009000 {
        cell-index = <1>;
        compatible = "fsl,mpc8641-pcie";
        device_type = "pci";
        #interrupt-cells = <1>;
        #size-cells = <2>;
        #address-cells = <3>;
        reg = <1000>;
        bus-range = <6>;
        ranges = [02 00 00 00 00 00 00 00 80 00 00 00 80 00 00 00 00 00 00 
00 40 00 00 00 01 00 00 00 00 00 00 00 c0 10 00 00 c0 10 00 00 00 00 00 00 
00 10 00 00];
        clock-frequency = <1fca055>;
        interrupt-parent = <40000>;
        interrupts = <2>;
        interrupt-map-mask = [00 00 f8 00 00 00 00 00 00 00 00 00 00 00 00 
07];
        interrupt-map = [00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 
00 04 00 00 00 00 00 04 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 02 00 04 00 00 00 00 00 05 00 00 00 01 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 03 00 04 00 00 00 00 00 06 00 00 00 01 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 04 00 04 00 00 00 00 00 07 00 00 00 01];
        pcie at 0 {
            reg = [00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00];
            #size-cells = <2>;
            #address-cells = <3>;
            device_type = "pci";
            ranges = [02 00 00 00 00 00 00 00 80 00 00 00 02 00 00 00 00 
00 00 00 80 00 00 00 00 00 00 00 40 00 00 00 01 00 00 00 00 00 00 00 c0 10 
00 00 01 00 00 00 00 00 00 00 c0 10 00 00 00 00 00 00 00 10 00 00];
        };
    };

and here the output from kernel:

quirk_usb_handoff_ohci: resource start = 0x80000000, len = 0x00001000
quirk_usb_handoff_ohci: base = 0xe1056000, offset = 0x00000004
Machine check in kernel mode.
Caused by (from SRR1=149030): Transfer error ack signal
Oops: Machine check, sig: 7 [#1]
TAURUS
NIP: c0297f4c LR: c0297f44 CTR: c00115d0
REGS: df821e60 TRAP: 0200   Not tainted  (2.6.25.11)
MSR: 00149030 <EE,ME,IR,DR>  CR: 24000022  XER: 00000000
TASK = df805410[1] 'swapper' THREAD: df820000
GPR00: c0297f44 df821f10 df805410 00000042 00000001 00000001 00000000 
00020000
GPR08: 00000036 c0333fe4 00006b61 c0360000 44000028 f7fbfffc 0fffac00 
ffffffff
GPR16: 00800000 007fff00 df821f78 c02d0000 c0330000 c0330000 00000000 
0fff5464
GPR24: c0330000 c02d0000 00000000 00000000 e1056000 df841218 df841218 
e1056004
NIP [c0297f4c] 0xc0297f4c
LR [c0297f44] 0xc0297f44
Call Trace:
[df821f10] [c0297f44] 0xc0297f44 (unreliable)
[df821f40] [c01617dc] pci_fixup_device+0xec/0x140
[df821f60] [c0295ae0] 0xc0295ae0
[df821f70] [c030c198] kernel_init+0x9c/0x290
[df821ff0] [c0010a6c] kernel_thread+0x44/0x60
Instruction dump:
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
---[ end trace 97996e90be8a1237 ]---
Kernel panic - not syncing: Attempted to kill init!
Rebooting in 180 seconds..

where resource start = 0x80000000 is the physical address of the USB 
controller, base = 0xe1056000 is the virtual address.

Does anyone know this kind of problem and can give me a hint.

Kind Regards,
Joachim

-- 
Dipl.-Ing. Joachim Bader
Research & Technology
Cockpit and Display Systems

Diehl Aerospace GmbH
An der Sandelmuehle 13
D-60439 Frankfurt
Phone +49-69-5805-1270
Fax       +49-69-5805-1400
e-mail:  joachim.bader at diehl-aerospace.de
http://www.diehl-aerospace.de

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