[U-Boot-Users] u-boot 1.1.4 compiled by eldk 4.1 for mpc82xx crashed

Miao Qingjun
2007-03-20T02:19:15Z

Thanks very much.

I tried it using "-O0" and it's OK.
I think u-boot 1.1.4 is not gcc 4.0 friendly.
And I will try u-boot 1.2.0 recommended by Wolfgang Denk.

Jerry Van Baren ??:
> Miao Qingjun wrote:
>
>> Hi,
>>
>> I encountered a big problem that u-boot 1.1.4 compiled by eldk 4.1 for
>> mpc82xx crashed.
>>
>> But if I build it using gcc-3.4.6 based cross tools, u-boot on my board
>> boots correctly.
>>
>> u-boot built by eldk 4.1 (gcc-4.0) failed, nothing occures on serial
>> port.
>>
>> Somebody sufered the same problem?
>>
>
> This is often a missing "volatile" qualifier on shared variable
> (particularly hardware registers) references. Newer compiler versions
> optimize more aggressively, making missing "volatile"s visible.
>
> If you use -O0 (no optimization) does it fix the problem? If it does,
> it most likely is an optimization/volatile issue. The hard part is to
> figure out where. Device handling and board-specific code is the place
> to start.
>
> Best regards,
> gvb
>
>
>