[meta-freescale] [meta-fsl-arm-extra] Booting RIoTboard

[Otavio Salvador]

Hello Nikolay and Gary,

On Wed, Apr 22, 2015 at 9:22 PM, Nikolay Dimitrov <picmaster at mail.bg> wrote:
> On 04/23/2015 03:18 AM, Nikolay Dimitrov wrote:
>> On 04/23/2015 12:37 AM, Gary Thomas wrote:
>>>
>>> I've just built an image for the i.MX6DL/RIoTboard using the latest
>>> master (fido).  I had to add this line to local.conf:
>>> MACHINE_EXTRA_RRECOMMENDS_remove_imx6dl-riotboard =
>>> "fsl-alsa-plugins" as the fsl-alsa-plugins won't currently build with
>>> Linux-4.0
>>>
>>> Now I'm trying to boot the image.  I've copied it to my SD card and
>>> set the switches appropriately (I found two web pages about this and
>>> they have conflicting information!  The answer seems to be
>>> SW1-SW8=On/Off/On/Off/Off/On/Off/On)
>>
>>
>> I have 2 riotboards both booting from sdcards, here are their
>> configurations:
>> - slot J6 (USDHC2), SW1-8 = On/Off/On/Off/Off/On/On/Off
>> - slot J7 (USDHC3), SW1-8 = On/Off/On/Off/Off/On/Off/On
>>
>>> I get the U-Boot prompt from the image I built (it has today's date),
>>> but the SD card doesn't boot from there.  The default boot commands
>>> seem to be looking for boot scripts, etc, but there are none on the
>>> SD card, only a zImage and DTB file.
>>>
>>> Is there some documentation, perhaps in meta-fsl-arm-extra, that
>>> helps (and I've missed)??
>>>
>>> Any help on how to boot this board would be appreciated.
>>
>>
>> Fido uses U-Boot v2015.04. Assuming that you haven't modifed the
>> upstream version, v2015.04 uses extlinux boot mechanism, which requires
>> the following files to be available on your boot partition:
>>
>> /boot/extlinux/extlinux.conf
>> /boot/imx6dl-riotboard.dtb
>> /boot/uImage
>>
>> Extlinux.conf should have the following content:
>>
>> default yocto
>> label yocto
>> kernel /boot/uImage
>> devicetree /boot/imx6dl-riotboard.dtb
>> append console=ttymxc1,115200 root=/dev/mmcblk0p1 rw
>
>
> Of course, change root= to suit your configuration.

I have reverted the conversion of the board for now. This should make
it work out of box until we add support for the generic script.

I will be sending those patches in some minutes and include them in
master-next for testing.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750