[U-Boot-Users] MPC8343 PCI setup

[Andre Schwarz <andre.schwarz@matrix-vision.de>]

Tor Krill schrieb:
>
> On 4/3/2008, "Andre Schwarz" <andre.schwarz@matrix-vision.de> wrote:
>
>   
>> All,
>>     
>
> Hi Andre and others,
>
>   
>> currently I'm trying to bring up a mpc8343 based system.
>> Latest u-boot v1.3.2 is running fine.
>>
>> The MPC8343 has a single 32-Bit PCI Bus running at 66MHz.
>> Connected are a FPGA (IDSEL 11 + IRQ0) and a miniPCI Slot (IDSEL12 + 
>> IRQ1).                                    
>>
>> Unfortunately the kernel panics during/after PCI setup.
>>     
>
> Not sure if this is related. But i got strange problems with PCI after
> the patch "Add CONFIG_PCI_SKIP_HOST_BRIDGE config option"
> (55774b512fdf63c..) was added.
>
> My symptoms where missed interrupts on sata dma in Linux. U-boot where
> however fine. Adding the above config solved my problems. Not really
> sure why i experienced this. We have no PCI bridge on our board.
>
> /Tor
>   
Tor,

thanks for your reply.

I'm also not sure if it's a PCI issue anymore ...

Kernel config has been reduced to a minimum : no PCI, no netwoking, i2c, 
spi ...
dts has been reduced to the CPU, soc and ipic.

U-Boot fills out dtb correctly - as far as I can see.

Kernel crashes on various "of_" functions.

There's also strange messages :
WARNING: Estimating decrementer frequency (not found)
WARNING: Estimating processor frequency (not found)

They're coming from "generic_calibrate_decr()" in kernel/time.c.

Looks like there something basically wrong with my dtb 
location/processing, since the "timebase-frequency" is present and valid :

        cpus {
                #address-cells = <0x00000001>;
                #size-cells = <0x00000000>;
                PowerPC,8343 at 0 {
                        device_type = "cpu";
                        reg = <0x00000000>;
                        d-cache-line-size = <0x00000020>;
                        i-cache-line-size = <0x00000020>;
                        d-cache-size = <0x00008000>;
                        i-cache-size = <0x00008000>;
                        timebase-frequency = <0x03f940aa>;
                        bus-frequency = <0x0fe502a8>;
                        clock-frequency = <0x17d783fc>;
                };
        };


Any hints ?


regards,
Andre


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