On 25-02-15 16:10, Cole Robinson wrote:
On 02/25/2015 09:55 AM, Hans de Goede wrote:
> On 25-02-15 15:19, Cole Robinson wrote:
>> Hey all,
>> First time trying to setup my cubietruck/cubieboard3. I used
>> fedora-arm-installer to fill in an 8GB sd card on my host machine, using
>> Pop it into my cubietruck, connect via serial console, start it up. Machine
>> passes uboot fine and boots the initrd, but eventually fails waiting for the
>> root mount point to show up, and falls back to dracut.
>> Comparing my boot output to kashyap's, my machine has all the same
>> referencing 'mmc1', but there's nothing about mmc0. mmcblk0 never
shows up, so
>> the boot fails after a timeout.
>> So I populated a SATA drive in the same way as above, hooked that to the
>> cubietruck, and it boots successfully. But I still can't access the sdcard
>> from fedora. The only thing under /sys/block is sda. Tried removing and
>> re-inserting the sunxi_mmc module, doesn't seem to help. Tried another sd
>> card, didn't make a difference.
>> I updated the kernel on the sdcard (by updating /boot on the sata drive,
>> sticking the sdcard in a USB adapter, rsyncing the contents), booted into the
>> latest lpae kernel, but still the sdcard isn't detected.
>> Anyone have any ideas? Googling didn't turn up anything.
> So there are no mmc0 messages from the kernel at all ? Sounds like there is
> an issue with the card-detect pin on your sdcard slot (u-boot does not
> use this, it assumes the card is there as it is booting from it), you
> could tree cleaning the slot a bit, e.g. blow some air through it.
Interesting. I wiggled the card some and blew air in a few places, and some
time during that fedora spit out:
mmc0: host does not support reading read-only switch. assuming write-enable.
Which I see in kashyap's output as well.
Yeah that is normal.
However that's all I got and I can't
reproduce yet, and not sure specifically what I did during that time.
Would there be mmc0 messages in the kernel output even if no sdcard is
I don't think so, other the initializing the controller, the kernel will not
do anything if the card-detect pin does not signal that there is a card
inside the lost.
Or is it dependent on a card being present?
>> If not, is it possible to make the cubietruck boot directly off the sata
>> drive? Doesn't seem to work for me, but if I can make that work I don't
>> to worry about the sdcard.
> There is no way to make things boot directly from sata, you always need
> u-boot somewhere else as the bootrom inside the soc does not support sata.
> You could leave a tiny sdcard in the slot with just u-boot though, and run
> everything else from sata.
Does /boot need to populated on the sdcard as well? Or can I make uboot on the
sdcard use /boot from my sata drive?
You can blow away the entire partition table from the sdcard, and have all partitions
on the sata disk. All you need is the u-boot binary which sits between 8k and 1M from
the start of the card.