[U-Boot] U-Boot Bug with newer GCC

Heiko Schocher
2013-02-02T17:38:30Z

Hello Jeroen,

On 02.02.2013 16:43, Jeroen Hofstee wrote:
> Hello Heiko,
>
> On 02/02/2013 11:18 AM, Jeroen Hofstee wrote:
>> Hello,
>>
>> On 02/02/2013 09:37 AM, Heiko Schocher wrote:
>>> Hello Wolfgang, Sebastian,
>>>
>>> On 01.02.2013 12:31, Wolfgang Denk wrote:
>>>> In message
>>>> <E70AF999396FDF4EAE40E195B847096109F5D3A9@SRVEXCH-2K10.CADCON.INTERN> you
>>>> wrote:
>>>>> we are using u-boot in our embedded system with arm-1136jfs cpu.
>>>> Which exact system / board configuration is this?
>>>>
>>>> And which exact U-Boot version (git commit ID ?) is it?
>>>>
>>>>> We recently tried a new toolchain with GCC 4.7.2.
>>>>> If compiled with the new toolchain the feature CONFIG_AUTO_COMPLETE
>>>>> isn't working.
>>>> We have been using GCC 4.7.2 for several months now, on many systems.
>>>> No such problems have been reported before, so I speculate if this is
>>>> really a problem with mainline code?
>>> Sebastian wrote On 01.02.2013 08:55:
>>>> we are using u-boot in our embedded system with arm-1136jfs cpu.
>>>> We recently tried a new toolchain with GCC 4.7.2.
>>>> If compiled with the new toolchain the feature CONFIG_AUTO_COMPLETE
>>>> isn't working.
>>>> U-Boot start normally and on hitting TAB the system freezes.
>>>> I tracked the problem down the variables __u_boot_cmd_start and
>>>> __u_boot_cmd_end. Both are not valid with the new toolchain. And
>>>> accessing one results in a system freeze.
>>>> Probably the is a problem in arch/arm/cpu/u-boot.lds. I really bad
>>>> at linker scripts.
>>> I just see some problems with ll_entry_* functions described in my
>>> post here:
>>> http://lists.denx.de/pipermail/u-boot/2013-February/145711.html
>>>
>>> I do not know, if this is the same problem, as I face problems only
>>> before relocation, after relocation all works fine ...
>>>
>>> In this thread Marek wrote, that for this problem albert has
>>> a solution ... (CCed albert and marek)
>>>
>>> Albert? Can you help here?
>> I am tempted to think that is unrelated. First of all since you encounter
>> problems with the 4.6 toolchain. This trap is not present when
>> compiling with a 4.6 version (at least not for me).
>>
>> Second, because I bothered Marex and Albert already with this
>> problem on irc and they concluded it could not be ll related.
>>
>> Third, because dumping the array of commands to a console,
>> displays them all correctly.
>
> For completeness, the third statement is wrong. It is only the case
> for the working version, the table has incorrect values for
> cmdtp->name in current master. So lets hope it is the same problem.
> I will wait for Albert his patch and check again. Thanks for the pointer.

Thanks for the info!
In the meantime, I also tried with ELDK-5.3 and see the same
issue (_u_boot_list_try__start is 0 before relocation).

bye,
Heiko
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