On 2012-04-04 08:58, Andrea Galbusera wrote:
Hi Gary,
On Wed, Apr 4, 2012 at 4:10 PM, Gary Thomas<[email protected]> 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
<[email protected]> 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.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
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