Hi,

On 03/30/2014 02:40 PM, Olliver Schinagl wrote:
> On 03/30/2014 02:25 PM, Ian Campbell wrote:
>> On Sun, 2014-03-30 at 12:26 +0100, Ian Campbell wrote:
>>> I've just FEL booted with 2014.04-rc2-00665-g96510e1 (i.e. current
>>> u-boot-sunxi.git#sunxi) onto a SATA installation and have started a
>>> git clone of the kernel, after which I'll run a build and see what
>>> happens.
>>
>> So, I did the git clone, checkout, config and "make all -j4" has been
>> running for quite a while now (>10 minutes) with no errors. While the
>> make was running I've messed around with "git archive" to produce a
>> tar.xz, got bored waiting for that, used wget to download a tar.xz from
>> kernel.org and unpacked it. All with no errors.
>>
>> IOW I'm afraid it all looks OK to me.
>>
>> This is all running from a SATA disk with a 2A power supply.
>>
>> I'm about to go out for lunch, if it crashes etc while I'm out I'll let
>> you know after I get back.
> Looking forward to the result, but I'm sure it'll be fine ;)
> 
> So i changed to the u-boot that comes with fedora 19 from hans, as I did all 
> my previous work with that, and untarring of the extracted tarball works now.
> 
> I have to make a deadline for my book (building the BSP, hence i bumped into 
> this) and will do more compile/extraction tests in the next few days as time 
> permits on hans's u-boot. I'll run some of ssvb's benchmarks to test various 
> things.
> 
> If this is all deemed stable; then it can only be u-boot that somehow broke. 
> The only thing I can imagine is tolerances or power usage somehow. Speaking 
> of, during the extraction power jumped from just under 0.5 amps @ 4.85V = 
> idle; to about 0.85 amps @ 4.75V.

Hmm, this might be caused by the FAST_MBUS stuff we've for A20 now a days.

You could try removing FAST_MBUS from the boards.cfg config options for
the cubietruck, and see how a recent u-boot build that way works.

Regards,

Hans

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