[yocto] Not booting on BeagleBoard xM 0x2

[Andrea Galbusera]

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?

Andrea