[yocto] Not booting on BeagleBoard xM 0x2

[Gary Thomas]

On 2012-04-04 08:58, Andrea Galbusera wrote:
> Hi Gary,
>
> On Wed, Apr 4, 2012 at 4:10 PM, Gary Thomas<gary at mlbassoc.com>  wrote:
>> On 2012-04-04 06:50, Bruce Ashfield wrote:
>>>
>>> On 12-04-04 08:04 AM, Andrea Galbusera wrote:
>>>>
>>>> Hi Tomas,
>>>>
>>>> On Wed, Apr 4, 2012 at 12:14 PM, Tomas Frydrych
>>>> <tf+lists.yocto at r-finger.com>  wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> I am trying to get Yocto image built from yesterday's master
>>>>> (Linux-3.0.23-yocto-standard) to boot on the NAND-less version of
>>>>> BeagleBoard xM, but the kernel panics with:
>>>>>
>>>>> ----------------- console log start ------------
>>>>>
>>>>> Waiting for root device /dev/mmcblk0p2...
>>>>> mmc0: new SDHC card at address 1234
>>>>> mmcblk0: mmc0:1234 SA04G 3.67 GiB (ro)
>>>>> mmcblk0: p1 p2
>>>>>
>>>>> VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2)
>>>>> Please append a correct "root=" boot option; here are the available
>>>>> partitions:
>>>>>
>>>>> b300 3858432 mmcblk0 driver: mmcblk
>>>>> b301 120456 mmcblk0p1 00000000-0000-0000-0000-000000000mmcblk0p1
>>>>> b302 3445942 mmcblk0p2 00000000-0000-0000-0000-000000000mmcblk0p2
>>>>>
>>>>> VFS: Unable to mount root fs on unknown-block(179,2)
>>>>> User configuration error - no valid root filesystem found
>>>>> Kernel panic - not syncing: Invalid configuration from end user prevents
>>>>> continuing
>>>>>
>>>>> -------------- console log end ------------------------------------
>>>>>
>>>>> My guess would be the problem is the card being detected as 'ro' (line
>>>>> 3), but I do not know why that is (there is no lock switch on mmc
>>>>> cards).
>>>>>
>>>>> The card itself is fine, it's the original card that came with the
>>>>> board, the original Angstrom demo boots fine from it, and yocto kernel
>>>>> 2.6.37 also used to boot.
>>>>>
>>>>> Tomas
>>>>
>>>>
>>>> Looks related to the comment I wrote here:
>>>> https://bugzilla.yoctoproject.org/show_bug.cgi?id=1892
>>>> I have a slightly different failure with yocto 1.2 beta snapshot (same
>>>> kernel) but seems related. Needs more investigation.
>>>> Anyone else having problem booting on beagleboard xM? Seems something
>>>> wrong happened after 1.1 release...
>>>
>>>
>>> We are working on several bugs on our reference beagleboard. The problem
>>> is that my beagleboard died (a horrible painful death) and the other
>>> boards
>>> that are directly available to are RevC and they are booting. So things
>>> are slowed down a bit .. but we are trying to get to the bottom of it,
>>> as fast as possible.
>>
>>
>> Just FYI, it also doesn't boot on my rev-C3 (not xM), albeit with a
>> different
>> error pattern.  It hangs at this point:
>>
>>   Waiting for root device /dev/mmcblk0p2...
>>   mmc0: error -110 whilst initialising SD card
>
> That's exactly the same error I see! Happy to know am not alone...
>
>> Looks like you might need the attached patch?
>
> I'm going to give it a try as soon as I can. Did you already submit it
> somewhere?

I haven't had a chance to try it yet.  I got it from the meta-ti layer.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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