Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

Hi,

I followed the example in the "Yocto Project Development Manual" for
setting up a local kernel repo and it didn't go so well.

A month or two ago I checked out Edison and was able to build all the
images required for Beagleboard and it booted fine (using command line
... not hob.  Tried hob but couldn't get it to work).

So then I checked out linux-yocto-3.0 kernel and setup a local kernel
git repo and went through the process of setting up poky-extras,
modifying bblayers.conf etc. to point to my local repo.

Any time I try to build core-image-minimal it looks like it always
wants to use the 2.6.37 recipe instead of finding my 3.0 repo.  I've
tried everything I can think of and I must me missing something.

So, I guess my questions are:

1.  Will linux-yocto-3.0 work with Beagleboard?
2.  Is the example for setting up for kernel modification in the
development manual still valid for Edison?

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-11 09:41 AM, Brian Hutchinson wrote:
> Hi,
>
> I followed the example in the "Yocto Project Development Manual" for
> setting up a local kernel repo and it didn't go so well.
>
> A month or two ago I checked out Edison and was able to build all the
> images required for Beagleboard and it booted fine (using command line
> ... not hob.  Tried hob but couldn't get it to work).
>
> So then I checked out linux-yocto-3.0 kernel and setup a local kernel
> git repo and went through the process of setting up poky-extras,
> modifying bblayers.conf etc. to point to my local repo.
>
> Any time I try to build core-image-minimal it looks like it always
> wants to use the 2.6.37 recipe instead of finding my 3.0 repo.  I've
> tried everything I can think of and I must me missing something.
>
> So, I guess my questions are:
>
> 1.  Will linux-yocto-3.0 work with Beagleboard?

It will. I sent patches recently to make that the preferred version
in the master branch. Cherry picking that change would probably
be all you would need.

> 2.  Is the example for setting up for kernel modification in the
> development manual still valid for Edison?

Should be.

Bruce

>
> Regards,
>
> Brian
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Wed, Jan 11, 2012 at 9:57 AM, Bruce Ashfield
<bruce.ashfield@windriver.com> wrote:
> It will. I sent patches recently to make that the preferred version
> in the master branch. Cherry picking that change would probably
> be all you would need.
>
>
>> 2.  Is the example for setting up for kernel modification in the
>> development manual still valid for Edison?
>
>
> Should be.
>

Would I get that change if I just did a git pull or do I have to do
something else?  I did a git pull to update my Edison checkout last
night realizing that I hadn't done one in a while and then ran a new
clean build and still ran into the same problem.  After triple
checking my work I figured it was time to post.

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Jack Mitchell]

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On 11/01/12 15:20, Brian Hutchinson wrote:
> On Wed, Jan 11, 2012 at 9:57 AM, Bruce Ashfield
> <bruce.ashfield@windriver.com>  wrote:
>> It will. I sent patches recently to make that the preferred version
>> in the master branch. Cherry picking that change would probably
>> be all you would need.
>>
>>
>>> 2.  Is the example for setting up for kernel modification in the
>>> development manual still valid for Edison?
>>
>> Should be.
>>
> Would I get that change if I just did a git pull or do I have to do
> something else?  I did a git pull to update my Edison checkout last
> night realizing that I hadn't done one in a while and then ran a new
> clean build and still ran into the same problem.  After triple
> checking my work I figured it was time to post.
>
> Regards,
>
> Brian
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto

I can chime in here. I am currently trying to get my Beagleboard running 
on the master branch, and it is pulling in kernel 3.0.12. However I 
cannot get it to boot, I get as far as here:

*Texas Instruments X-Loader 1.5.0 (Jan 11 2012 - 14:06:12)
Beagle xM
Reading boot sector
Loading u-boot.bin from mmc


U-Boot 2011.06 (Jan 11 2012 - 14:15:11)

OMAP3630/3730-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C:   ready
DRAM:  512 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment

In:    serial
Out:   serial
Err:   serial
Beagle unknown 0x02
No EEPROM on expansion board
Die ID #0ed800229ff800000163810c15007017
Hit any key to stop autoboot:  0
SD/MMC found on device 0
reading uEnv.txt

** Unable to read "uEnv.txt" from mmc 0:1 **
reading uImage

3106580 bytes read
Booting from mmc ...
## Booting kernel from Legacy Image at 82000000 ...
    Image Name:   Linux-3.0.12-yocto-standard+
    Image Type:   ARM Linux Kernel Image (uncompressed)
    Data Size:    3106516 Bytes = 3 MiB
    Load Address: 80008000
    Entry Point:  80008000
    Verifying Checksum ... OK
    Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

*Where it hangs and won't go any further. I am watching it over serial 
using a baud rate of 115200. It's a bit worrying that uBoot doesn't pick 
up the Beagle revision... I'm sure it used to when I was doing testing a 
few months ago.

Cheers,
Jack.


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Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-11 10:24 AM, Jack Mitchell wrote:
> On 11/01/12 15:20, Brian Hutchinson wrote:
>> On Wed, Jan 11, 2012 at 9:57 AM, Bruce Ashfield
>> <bruce.ashfield@windriver.com>  wrote:
>>> It will. I sent patches recently to make that the preferred version
>>> in the master branch. Cherry picking that change would probably
>>> be all you would need.
>>>
>>>
>>>> 2.  Is the example for setting up for kernel modification in the
>>>> development manual still valid for Edison?
>>>
>>> Should be.
>>>
>> Would I get that change if I just did a git pull or do I have to do
>> something else?  I did a git pull to update my Edison checkout last
>> night realizing that I hadn't done one in a while and then ran a new
>> clean build and still ran into the same problem.  After triple
>> checking my work I figured it was time to post.
>>
>> Regards,
>>
>> Brian
>> _______________________________________________
>> yocto mailing list
>> yocto@yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/yocto
>
> I can chime in here. I am currently trying to get my Beagleboard running
> on the master branch, and it is pulling in kernel 3.0.12. However I
> cannot get it to boot, I get as far as here:
>
> *Texas Instruments X-Loader 1.5.0 (Jan 11 2012 - 14:06:12)
> Beagle xM
> Reading boot sector
> Loading u-boot.bin from mmc
>
>
> U-Boot 2011.06 (Jan 11 2012 - 14:15:11)
>
> OMAP3630/3730-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
> OMAP3 Beagle board + LPDDR/NAND
> I2C: ready
> DRAM: 512 MiB
> NAND: 0 MiB
> MMC: OMAP SD/MMC: 0
> *** Warning - readenv() failed, using default environment
>
> In: serial
> Out: serial
> Err: serial
> Beagle unknown 0x02
> No EEPROM on expansion board
> Die ID #0ed800229ff800000163810c15007017
> Hit any key to stop autoboot: 0
> SD/MMC found on device 0
> reading uEnv.txt
>
> ** Unable to read "uEnv.txt" from mmc 0:1 **
> reading uImage
>
> 3106580 bytes read
> Booting from mmc ...
> ## Booting kernel from Legacy Image at 82000000 ...
> Image Name: Linux-3.0.12-yocto-standard+
> Image Type: ARM Linux Kernel Image (uncompressed)
> Data Size: 3106516 Bytes = 3 MiB
> Load Address: 80008000
> Entry Point: 80008000
> Verifying Checksum ... OK
> Loading Kernel Image ... OK
> OK
>
> Starting kernel ...
>
> Uncompressing Linux... done, booting the kernel.
>
> *Where it hangs and won't go any further. I am watching it over serial
> using a baud rate of 115200. It's a bit worrying that uBoot doesn't pick
> up the Beagle revision... I'm sure it used to when I was doing testing a
> few months ago.

Interesting. You can open a bug on this, boot and sanity/peripheral tests
were performed before I made the switch. So if this is broken, that's
a bug and we can look into it.

As you hinted, including the uboot build/information would be useful,
since perhaps that has gotten out of sync.

Cheers,

Bruce

>
> Cheers,
> Jack.
>
>
>
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-11 10:20 AM, Brian Hutchinson wrote:
> On Wed, Jan 11, 2012 at 9:57 AM, Bruce Ashfield
> <bruce.ashfield@windriver.com>  wrote:
>> It will. I sent patches recently to make that the preferred version
>> in the master branch. Cherry picking that change would probably
>> be all you would need.
>>
>>
>>> 2.  Is the example for setting up for kernel modification in the
>>> development manual still valid for Edison?
>>
>>
>> Should be.
>>
>
> Would I get that change if I just did a git pull or do I have to do
> something else?  I did a git pull to update my Edison checkout last
> night realizing that I hadn't done one in a while and then ran a new
> clean build and still ran into the same problem.  After triple
> checking my work I figured it was time to post.

Just so I'm clear. You are asking about the switch to 3.0 as the
default ? If so, that was only done in master for the upcoming 1.2
release and not on the edison branch, so you wouldn't pick it up
by pulling.

Cheers,

Bruce

>
> Regards,
>
> Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Wed, Jan 11, 2012 at 10:29 AM, Bruce Ashfield
<bruce.ashfield@windriver.com> wrote:
> Just so I'm clear. You are asking about the switch to 3.0 as the
> default ? If so, that was only done in master for the upcoming 1.2
> release and not on the edison branch, so you wouldn't pick it up
> by pulling.

Thanks!  I did a git checkout -b master origin/master and will try again.

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

> <bruce.ashfield@windriver.com> wrote:
>> Just so I'm clear. You are asking about the switch to 3.0 as the
>> default ? If so, that was only done in master for the upcoming 1.2
>> release and not on the edison branch, so you wouldn't pick it up
>> by pulling.
>
> Thanks!  I did a git checkout -b master origin/master and will try again.

Thanks Bruce for pointing me in the right direction.  I just wanted to
follow up.

I switched to master branch and did a clean build for Beagleboard.  I
can confirm that it worked.  I blew my SD Card away and put freshly
built yocto images of MLO, u-boot.bin & uImage and my Beagleboard xM
boots fine (one last question after this output below):

Texas Instruments X-Loader 1.5.0 (Jan 11 2012 - 12:41:55)
Beagle xM
Reading boot sector
Loading u-boot.bin from mmc


U-Boot 2011.06 (Jan 11 2012 - 12:41:50)

OMAP3630/3730-GP ES1.0, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C:   ready
DRAM:  512 MiB
NAND:  256 MiB
MMC:   OMAP SD/MMC: 0
In:    serial
Out:   serial
Err:   serial
Beagle xM Rev A
No EEPROM on expansion board
Die ID #335000001bf00000015739ea07035019
Hit any key to stop autoboot:  0
SD/MMC found on device 0
reading uEnv.txt

** Unable to read "uEnv.txt" from mmc 0:1 **
reading uImage

3106612 bytes read
Booting from mmc ...
## Booting kernel from Legacy Image at 82000000 ...
   Image Name:   Linux-3.0.12-yocto-standard+
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    3106548 Bytes = 3 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

Yocto (Built by Poky 6.0) 1.1+snapshot-20120111 beagleboard ttyO2

beagleboard login: root
root@beagleboard:~# ls
root@beagleboard:~# uptime
 19:06:08 up 0 min,  load average: 1.08, 0.30, 0.10
root@beagleboard:~# uname -a
Linux beagleboard 3.0.12-yocto-standard+ #1 PREEMPT Wed Jan 11
13:53:06 EST 2012 armv7l GNU/Linux
root@beagleboard:~#


... so now I'm back to trying to get poky to use my local
linux-yocto-3.0 git repo.

One more question.  When I setup linux-yocto_3.0.bbappend in
poky-extras/meta-kernel-dev/recipies-kernel/linux, do I use
"yocto/standard/beagleboard" for KMACHINE?

Thanks again,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-11 03:35 PM, Brian Hutchinson wrote:
>> <bruce.ashfield@windriver.com>  wrote:
>>> Just so I'm clear. You are asking about the switch to 3.0 as the
>>> default ? If so, that was only done in master for the upcoming 1.2
>>> release and not on the edison branch, so you wouldn't pick it up
>>> by pulling.
>>
>> Thanks!  I did a git checkout -b master origin/master and will try again.
>
> Thanks Bruce for pointing me in the right direction.  I just wanted to
> follow up.
>
> I switched to master branch and did a clean build for Beagleboard.  I
> can confirm that it worked.  I blew my SD Card away and put freshly
> built yocto images of MLO, u-boot.bin&  uImage and my Beagleboard xM
> boots fine (one last question after this output below):
>
> Texas Instruments X-Loader 1.5.0 (Jan 11 2012 - 12:41:55)
> Beagle xM
> Reading boot sector
> Loading u-boot.bin from mmc
>
>
> U-Boot 2011.06 (Jan 11 2012 - 12:41:50)
>
> OMAP3630/3730-GP ES1.0, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
> OMAP3 Beagle board + LPDDR/NAND
> I2C:   ready
> DRAM:  512 MiB
> NAND:  256 MiB
> MMC:   OMAP SD/MMC: 0
> In:    serial
> Out:   serial
> Err:   serial
> Beagle xM Rev A
> No EEPROM on expansion board
> Die ID #335000001bf00000015739ea07035019
> Hit any key to stop autoboot:  0
> SD/MMC found on device 0
> reading uEnv.txt
>
> ** Unable to read "uEnv.txt" from mmc 0:1 **
> reading uImage
>
> 3106612 bytes read
> Booting from mmc ...
> ## Booting kernel from Legacy Image at 82000000 ...
>     Image Name:   Linux-3.0.12-yocto-standard+
>     Image Type:   ARM Linux Kernel Image (uncompressed)
>     Data Size:    3106548 Bytes = 3 MiB
>     Load Address: 80008000
>     Entry Point:  80008000
>     Verifying Checksum ... OK
>     Loading Kernel Image ... OK
> OK
>
> Starting kernel ...
>
> Uncompressing Linux... done, booting the kernel.
>
> Yocto (Built by Poky 6.0) 1.1+snapshot-20120111 beagleboard ttyO2
>
> beagleboard login: root
> root@beagleboard:~# ls
> root@beagleboard:~# uptime
>   19:06:08 up 0 min,  load average: 1.08, 0.30, 0.10
> root@beagleboard:~# uname -a
> Linux beagleboard 3.0.12-yocto-standard+ #1 PREEMPT Wed Jan 11
> 13:53:06 EST 2012 armv7l GNU/Linux
> root@beagleboard:~#

Excellent!

>
>
> ... so now I'm back to trying to get poky to use my local
> linux-yocto-3.0 git repo.
>
> One more question.  When I setup linux-yocto_3.0.bbappend in
> poky-extras/meta-kernel-dev/recipies-kernel/linux, do I use
> "yocto/standard/beagleboard" for KMACHINE?

If you still want the default (which you likely do here), you
can leave KMACHINE untouched in your bbappend and the inherited
value from the core layers will take care of everything. Get that
working on your local clone, and then try tweaking things :)

Cheers,

Bruce

>
> Thanks again,
>
> Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Wed, Jan 11, 2012 at 3:46 PM, Bruce Ashfield
<bruce.ashfield@windriver.com> wrote:
>> Starting kernel ...
>>
>> Uncompressing Linux... done, booting the kernel.
>>
>> Yocto (Built by Poky 6.0) 1.1+snapshot-20120111 beagleboard ttyO2
>>
>> beagleboard login: root
>> root@beagleboard:~# ls
>> root@beagleboard:~# uptime
>>  19:06:08 up 0 min,  load average: 1.08, 0.30, 0.10
>> root@beagleboard:~# uname -a
>> Linux beagleboard 3.0.12-yocto-standard+ #1 PREEMPT Wed Jan 11
>> 13:53:06 EST 2012 armv7l GNU/Linux
>> root@beagleboard:~#
>
>
> Excellent!
>
> If you still want the default (which you likely do here), you
> can leave KMACHINE untouched in your bbappend and the inherited
> value from the core layers will take care of everything. Get that
> working on your local clone, and then try tweaking things :)

Will do.  I also have a C3 Beagleboard around here somewhere and I'll
verify that the images I built today work on that platform too.

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Joshua Lock]

On 11/01/12 06:41, Brian Hutchinson wrote:
> Hi,
>
> I followed the example in the "Yocto Project Development Manual" for
> setting up a local kernel repo and it didn't go so well.
>
> A month or two ago I checked out Edison and was able to build all the
> images required for Beagleboard and it booted fine (using command line
> ... not hob.  Tried hob but couldn't get it to work).
>
> So then I checked out linux-yocto-3.0 kernel and setup a local kernel
> git repo and went through the process of setting up poky-extras,
> modifying bblayers.conf etc. to point to my local repo.
>
> Any time I try to build core-image-minimal it looks like it always
> wants to use the 2.6.37 recipe instead of finding my 3.0 repo.  I've
> tried everything I can think of and I must me missing something.

In meta-yocto/conf/distro/poky.conf there's a line which sets:

PREFERRED_VERSION_linux-yocto ?= "2.6.37+git%"

Which is then overridden for the qemu machines to:

PREFERRED_VERSION_linux-yocto_qemuppc ?= "3.0%"

If you add a similar line for beagleboard to a conf file, such as 
local.conf, it would look for a 3.0 kernel version and use your tree.

PREFERRED_VERSION_linux-yocto_beagleboard ?= "3.0%"

I know you've switched to master but I wanted to help you understand the 
system is doing what it is.

Cheers,
Joshua
-- 
Joshua Lock
         Yocto Project "Johannes factotum"
         Intel Open Source Technology Centre

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Wed, Jan 11, 2012 at 3:47 PM, Joshua Lock <josh@linux.intel.com> wrote:

> In meta-yocto/conf/distro/poky.conf there's a line which sets:
>
> PREFERRED_VERSION_linux-yocto ?= "2.6.37+git%"
>
> Which is then overridden for the qemu machines to:
>
> PREFERRED_VERSION_linux-yocto_qemuppc ?= "3.0%"
>
> If you add a similar line for beagleboard to a conf file, such as
> local.conf, it would look for a 3.0 kernel version and use your tree.
>
> PREFERRED_VERSION_linux-yocto_beagleboard ?= "3.0%"
>
> I know you've switched to master but I wanted to help you understand the
> system is doing what it is.
>

Ah, very good!  Yes, good to know information.  I'm coming from
OE-Angstrom/Arago and so far most things have been pretty familiar but
it always helps to know how it fits together.  I need to make several
BSP's for TI processors and this helps me understand things a bit
better.

I still have an old checkout that has 2.6.37 so I might play with that
more.  I had working images there I didn't want to mess up (edison).

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

Yet another follow up.  I finally found my C3 Beagleboard and the
default kernel built off master yesterday works on that platform too.

I was able to do another build with the tips you guys gave and it
looks like it is picking up the kernel from my local git repo now.  I
did the "calibrate" example and while I couldn't see the printk's due
to the silent boot being turned on somehow, uname -a was different
than the default image .... mine is now:

root@beagleboard:~# uname -a
Linux beagleboard 3.0.14-yocto-standard+ #1 PREEMPT Thu Jan 12
08:45:10 EST 2012 armv7l GNU/Linux

And just for sanity, I made another copy of my bare clone and verified
that I pushed the "calibrate" changes correctly.

So it looks like I'm good now thanks to your help!

Do I have to do a cleanall every time I'm finished pushing changes
back to my local kernel repo?

Is there a document that gives clues as to how to setup a local u-boot
repo for making changes to it?  Is is simply changing the u-boot
recipe SRC_URI to use my local u-boot git repo in
poky/meda/recipes-bsp/u-boot or is it more involved than that?  Is
there a u-boot dev layer like the poky-extras/meta-kernel-dev?

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Jack Mitchell]

On 12/01/12 15:21, Brian Hutchinson wrote:
> Yet another follow up.  I finally found my C3 Beagleboard and the
> default kernel built off master yesterday works on that platform too.
>
> I was able to do another build with the tips you guys gave and it
> looks like it is picking up the kernel from my local git repo now.  I
> did the "calibrate" example and while I couldn't see the printk's due
> to the silent boot being turned on somehow, uname -a was different
> than the default image .... mine is now:
>
> root@beagleboard:~# uname -a
> Linux beagleboard 3.0.14-yocto-standard+ #1 PREEMPT Thu Jan 12
> 08:45:10 EST 2012 armv7l GNU/Linux
>
> And just for sanity, I made another copy of my bare clone and verified
> that I pushed the "calibrate" changes correctly.
>
> So it looks like I'm good now thanks to your help!
>
> Do I have to do a cleanall every time I'm finished pushing changes
> back to my local kernel repo?
>
> Is there a document that gives clues as to how to setup a local u-boot
> repo for making changes to it?  Is is simply changing the u-boot
> recipe SRC_URI to use my local u-boot git repo in
> poky/meda/recipes-bsp/u-boot or is it more involved than that?  Is
> there a u-boot dev layer like the poky-extras/meta-kernel-dev?
>
> Regards,
>
> Brian
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto

Brian,

What image are you building, as I cannot get core-image-minimal to boot 
at all on my xM. I am currently trying to fix a hosed sd card (who knows 
what happened to it!) and then I will see if it has made any difference.

Cheers,
Jack.

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Thu, Jan 12, 2012 at 10:56 AM, Jack Mitchell <ml@communistcode.co.uk> wrote:
> Brian,
>
> What image are you building, as I cannot get core-image-minimal to boot at
> all on my xM. I am currently trying to fix a hosed sd card (who knows what
> happened to it!) and then I will see if it has made any difference.

Probably the same images as you.  I switched my branch to master and
the default kernel built was 3.0.12.

You might have to smoke your SD card (re-partition it for boot & root)
and copy MLO first, then u-boot.bin and uImage.  Copying MLO first is
key.  I know this can be a pain.  Google for beagleboard SD Card
script to find one of the scripts that automates setting up the SD
Card.  They just create the partitions etc., you still have to copy
the contents to the card in the right order.  MLO is the first you
copy on the boot partition, the order the rest are copied don't matter
AFAIK.

I also have a boot.scr with:

setenv bootcmd 'mmc init; fatload mmc 0:1 0x80300000 uImage; bootm 0x80300000'
setenv setenv bootargs 'console=ttyO2,115200n8 root=/dev/mmcblk0p2
rootwait rootfstype=ext3 rw'
boot

Hope that helps!

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-12 10:21 AM, Brian Hutchinson wrote:
> Yet another follow up.  I finally found my C3 Beagleboard and the
> default kernel built off master yesterday works on that platform too.
>
> I was able to do another build with the tips you guys gave and it
> looks like it is picking up the kernel from my local git repo now.  I
> did the "calibrate" example and while I couldn't see the printk's due
> to the silent boot being turned on somehow, uname -a was different
> than the default image .... mine is now:
>
> root@beagleboard:~# uname -a
> Linux beagleboard 3.0.14-yocto-standard+ #1 PREEMPT Thu Jan 12
> 08:45:10 EST 2012 armv7l GNU/Linux
>
> And just for sanity, I made another copy of my bare clone and verified
> that I pushed the "calibrate" changes correctly.
>
> So it looks like I'm good now thanks to your help!
>
> Do I have to do a cleanall every time I'm finished pushing changes
> back to my local kernel repo?

The bitbake AUTOREV code should take care of updating the clone
of your local repo in downloads/git2. I take it that this isn't
happening ?

>
> Is there a document that gives clues as to how to setup a local u-boot
> repo for making changes to it?  Is is simply changing the u-boot
> recipe SRC_URI to use my local u-boot git repo in
> poky/meda/recipes-bsp/u-boot or is it more involved than that?  Is
> there a u-boot dev layer like the poky-extras/meta-kernel-dev?

It should be (largely) as simple as that. We could create something
simple and throw it in with the meta-kernel-dev layer if there's any
interest in adding it.

Cheers,

Bruce

>
> Regards,
>
> Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Thu, Jan 12, 2012 at 11:00 AM, Bruce Ashfield
<bruce.ashfield@windriver.com> wrote:
> The bitbake AUTOREV code should take care of updating the clone
> of your local repo in downloads/git2. I take it that this isn't
> happening ?

... haven't tried ... was just sticking to the example in the
documentation which says to push changes and do a cleanall.  The spin
time on my dev machine wasn't too bad but long enough to get old quick
if I had to do it often.

> It should be (largely) as simple as that. We could create something
> simple and throw it in with the meta-kernel-dev layer if there's any
> interest in adding it.

Just wanting to know what the "best practice" is as I have lots of
platforms to support.

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-12 11:20 AM, Brian Hutchinson wrote:
> On Thu, Jan 12, 2012 at 11:00 AM, Bruce Ashfield
> <bruce.ashfield@windriver.com>  wrote:
>> The bitbake AUTOREV code should take care of updating the clone
>> of your local repo in downloads/git2. I take it that this isn't
>> happening ?
>
> ... haven't tried ... was just sticking to the example in the
> documentation which says to push changes and do a cleanall.  The spin

Good point. I hadn't noticed that it was in there. Worth trying
without it, and raising a bug if it isn't required. It's
bitbake internals rather than kernel at play here, so I'm far
from authoritative about what should or shouldn't work.

> time on my dev machine wasn't too bad but long enough to get old quick
> if I had to do it often.

Agreed!

>
>> It should be (largely) as simple as that. We could create something
>> simple and throw it in with the meta-kernel-dev layer if there's any
>> interest in adding it.
>
> Just wanting to know what the "best practice" is as I have lots of
> platforms to support.

I prefer to work this way, since managing patches in a source git
repository is much easier for me. If you only have a few patches,
then they can just be pushed on top and added to the SRC_URI, but
you'd be doing more development under tmp/work/ in that case .. and
I'm paranoid about losing things :)

Cheers,

Bruce

>
> Regards,
>
> Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Thu, Jan 12, 2012 at 11:24 AM, Bruce Ashfield
<bruce.ashfield@windriver.com> wrote:
> I prefer to work this way, since managing patches in a source git
> repository is much easier for me. If you only have a few patches,
> then they can just be pushed on top and added to the SRC_URI, but
> you'd be doing more development under tmp/work/ in that case .. and
> I'm paranoid about losing things :)

I know it probably isn't the best way (did it mostly because I was in
a hurry and never took the time to think about the "right" way to do
it) but I've made changes to the kernel & u-boot before in the tmp
directories (with Angstrom and Arago) and build images manually (make
uImage etc.) and that was OK for quick/dirty things but I've gotten
burned before by forgetting my changes and doing a bitbake build and
wiping out my changes.   I like the method of pointing yocto to local
git repos and think that is better for long term development as it
will contain history and would be easy to determine what changed etc.
I'd like to do something similar with u-boot and thought you guys had
worked out a defacto standard way but in looking through all the docs
it doesn't look that way.

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-12 11:48 AM, Brian Hutchinson wrote:
> On Thu, Jan 12, 2012 at 11:24 AM, Bruce Ashfield
> <bruce.ashfield@windriver.com>  wrote:
>> I prefer to work this way, since managing patches in a source git
>> repository is much easier for me. If you only have a few patches,
>> then they can just be pushed on top and added to the SRC_URI, but
>> you'd be doing more development under tmp/work/ in that case .. and
>> I'm paranoid about losing things :)
>
> I know it probably isn't the best way (did it mostly because I was in
> a hurry and never took the time to think about the "right" way to do
> it) but I've made changes to the kernel&  u-boot before in the tmp
> directories (with Angstrom and Arago) and build images manually (make
> uImage etc.) and that was OK for quick/dirty things but I've gotten
> burned before by forgetting my changes and doing a bitbake build and
> wiping out my changes.   I like the method of pointing yocto to local
> git repos and think that is better for long term development as it
> will contain history and would be easy to determine what changed etc.
> I'd like to do something similar with u-boot and thought you guys had
> worked out a defacto standard way but in looking through all the docs
> it doesn't look that way.

Ah yes. Nothing in particular. I was a non-oe import to yocto, so a
lot of what I've done is from being bitten in the past and making sure
that it didn't happen to me in a new environment.

Of course, I'm all for general solutions and getting feedback as well!

Cheers,

Bruce

>
> Regards,
>
> Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Koen Kooi]

Op 11 jan. 2012, om 21:57 heeft Brian Hutchinson het volgende geschreven:

> On Wed, Jan 11, 2012 at 3:47 PM, Joshua Lock <josh@linux.intel.com> wrote:
> 
>> In meta-yocto/conf/distro/poky.conf there's a line which sets:
>> 
>> PREFERRED_VERSION_linux-yocto ?= "2.6.37+git%"
>> 
>> Which is then overridden for the qemu machines to:
>> 
>> PREFERRED_VERSION_linux-yocto_qemuppc ?= "3.0%"
>> 
>> If you add a similar line for beagleboard to a conf file, such as
>> local.conf, it would look for a 3.0 kernel version and use your tree.
>> 
>> PREFERRED_VERSION_linux-yocto_beagleboard ?= "3.0%"
>> 
>> I know you've switched to master but I wanted to help you understand the
>> system is doing what it is.
>> 
> 
> Ah, very good!  Yes, good to know information.  I'm coming from
> OE-Angstrom/Arago and so far most things have been pretty familiar but
> it always helps to know how it fits together.  I need to make several
> BSP's for TI processors and this helps me understand things a bit
> better.

If that's the case, you'd be a lot better off basing it off the official TI BSP layer instead of meta-yocto.

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

[-- Attachment #1: Type: text/plain, Size: 1455 bytes --]

Hey Koen, good to hear from you.  My next step is to bring meta-ti.  I've
been following that list so I hope to get things working with it soon.

Regards,

Brian

From Droid Incredible
On Jan 15, 2012 3:47 AM, "Koen Kooi" <koen@beagleboard.org> wrote:

>
> Op 11 jan. 2012, om 21:57 heeft Brian Hutchinson het volgende geschreven:
>
> > On Wed, Jan 11, 2012 at 3:47 PM, Joshua Lock <josh@linux.intel.com>
> wrote:
> >
> >> In meta-yocto/conf/distro/poky.conf there's a line which sets:
> >>
> >> PREFERRED_VERSION_linux-yocto ?= "2.6.37+git%"
> >>
> >> Which is then overridden for the qemu machines to:
> >>
> >> PREFERRED_VERSION_linux-yocto_qemuppc ?= "3.0%"
> >>
> >> If you add a similar line for beagleboard to a conf file, such as
> >> local.conf, it would look for a 3.0 kernel version and use your tree.
> >>
> >> PREFERRED_VERSION_linux-yocto_beagleboard ?= "3.0%"
> >>
> >> I know you've switched to master but I wanted to help you understand the
> >> system is doing what it is.
> >>
> >
> > Ah, very good!  Yes, good to know information.  I'm coming from
> > OE-Angstrom/Arago and so far most things have been pretty familiar but
> > it always helps to know how it fits together.  I need to make several
> > BSP's for TI processors and this helps me understand things a bit
> > better.
>
> If that's the case, you'd be a lot better off basing it off the official
> TI BSP layer instead of meta-yocto.

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Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

OK, hate to bring this up again but I must be doing something wrong.
My kernel changes don't appear to be getting picked up.  I thought it
was OK before but then I did some real work on the kernel and that is
when I realized something isn't right.

To recap from the previous emails, I'm following the Appendix B
example and trying to modify the kernel using a local git repo.

In going over the steps again, it looks like I didn't checkout a local
branch in the copy of the bare clone so I don't know if that is my
problem or not.  When I make a copy of the bare clone I see my changes
so my changes must be in the local git.  Here is what I did:

. I checked out master.
. I cd into poky and ran git clone
git://git.yoctoproject.org/poky-extras poky-extras
. Outside of poky I created a bare clone git clone linux-yocto-3.0.git
linux-yocto-3.0
. Inside linux-yocto-3.0 I think I checked out master.  I can't
remember.  When I do git branch in the copy of the bare clone it says
I'm on master
. When I sourced to build, I followed the example on one of the videos
and did "source poky/oe-init-build-env bb-test" so my conf dir is in
bb-test directory.  Here is what conf bblayers.conf has

# LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf
# changes incompatibly
LCONF_VERSION = "4"

BBFILES ?= ""
BBLAYERS ?= " \
  /home/hutch/yocto/master/poky/meta \
  /home/hutch/yocto/master/poky/meta-yocto \
  /home/hutch/yocto/master/poky/poky-extras/meta-kernel-dev \
  "

. At this point, my copy of the bare clone is in /home/hutch/linux-yocto-3.0
. So, my linux-yocto_3.0.bbappend file looks like this:

FILESEXTRAPATHS := "${THISDIR}/${PN}"

COMPATIBLE_MACHINE = ${MACHINE}

# KMACHINE is the branch to build
# KMACHINE_<MACHINE> ?= "yocto/${LINUX_KERNEL_TYPE}/${KMACHINE}"

# KERNEL_FEATURES are features to be added to the kernel, and must
# point to configurations stored on the 'meta' branch of the kernel
# that is being built.
# KERNEL_FEATURES ?= <FOO>

# It is often nice to have a local clone of the kernel repos, to
# allow patches to be staged, branches created, etc. Modify

# KSRC_linux_yocto to point to your local clone as appropriate.
KSRC_linux_yocto ?= /home/hutch/linux-yocto-3.0.git
KMACHINE ?= "yocto/${LINUX_KERNEL_TYPE}/${KMACHINE}"

SRC_URI = "git://${KSRC_linux_yocto};protocol=file;nocheckout=1;branch=${KBRANCH},meta;name=machine,meta"

KERNEL_REVISION_CHECKING=
SRCREV=${AUTOREV}
#BB_LOCALCOUNT_OVERRIDE = "1"
LOCALCOUNT = "0"

. I'm working with spidev and user space gpio so I needed to turn
these things on in menuconfig so I ran:

bitbake linux-yocto -c menuconfig and then made my changes.

. Then I build the kernel with:

bitbake linux-yocto -c compile -f
bitbake linux-yocto

My first clue that my changes were not getting picked up is I didn't
have a /dev/spidev entry.  I found the board-omap3beagle.c file in tmp
and it didn't have my changes.

If I make another copy of my bare clone with git clone
linux-yocto-3.0.git linux-yocto-3.0_test2 ... I see my changes.

After I made my source changes I did:

git add arch/arm/mach-omap2/board-omap3beagle.c
git commit --signoff
git status (nothing else checked out)
git push origin master:master

On the target, if I zcat config.gz, I see the changes I made to
menuconfig but my source changes don't show up when I poke around in
tmp.

Not sure what went wrong but it doesn't appear to be picking up my
kernel changes when I bitbake and I don't understand why.  Hopefully I
provided enough info for someone to spot what I hosed up.

Regards,

Brian

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Bruce Ashfield]

On 12-01-22 10:33 PM, Brian Hutchinson wrote:
> OK, hate to bring this up again but I must be doing something wrong.
> My kernel changes don't appear to be getting picked up.  I thought it
> was OK before but then I did some real work on the kernel and that is
> when I realized something isn't right.
>
> To recap from the previous emails, I'm following the Appendix B
> example and trying to modify the kernel using a local git repo.
>
> In going over the steps again, it looks like I didn't checkout a local
> branch in the copy of the bare clone so I don't know if that is my
> problem or not.  When I make a copy of the bare clone I see my changes
> so my changes must be in the local git.  Here is what I did:
>
> . I checked out master.
> . I cd into poky and ran git clone
> git://git.yoctoproject.org/poky-extras poky-extras
> . Outside of poky I created a bare clone git clone linux-yocto-3.0.git
> linux-yocto-3.0
> . Inside linux-yocto-3.0 I think I checked out master.  I can't
> remember.  When I do git branch in the copy of the bare clone it says
> I'm on master
> . When I sourced to build, I followed the example on one of the videos
> and did "source poky/oe-init-build-env bb-test" so my conf dir is in
> bb-test directory.  Here is what conf bblayers.conf has
>
> # LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf
> # changes incompatibly
> LCONF_VERSION = "4"
>
> BBFILES ?= ""
> BBLAYERS ?= " \
>    /home/hutch/yocto/master/poky/meta \
>    /home/hutch/yocto/master/poky/meta-yocto \
>    /home/hutch/yocto/master/poky/poky-extras/meta-kernel-dev \
>    "
>
> . At this point, my copy of the bare clone is in /home/hutch/linux-yocto-3.0
> . So, my linux-yocto_3.0.bbappend file looks like this:
>
> FILESEXTRAPATHS := "${THISDIR}/${PN}"
>
> COMPATIBLE_MACHINE = ${MACHINE}
>
> # KMACHINE is the branch to build
> # KMACHINE_<MACHINE>  ?= "yocto/${LINUX_KERNEL_TYPE}/${KMACHINE}"
>
> # KERNEL_FEATURES are features to be added to the kernel, and must
> # point to configurations stored on the 'meta' branch of the kernel
> # that is being built.
> # KERNEL_FEATURES ?=<FOO>
>
> # It is often nice to have a local clone of the kernel repos, to
> # allow patches to be staged, branches created, etc. Modify
>
> # KSRC_linux_yocto to point to your local clone as appropriate.
> KSRC_linux_yocto ?= /home/hutch/linux-yocto-3.0.git
> KMACHINE ?= "yocto/${LINUX_KERNEL_TYPE}/${KMACHINE}"
>
> SRC_URI = "git://${KSRC_linux_yocto};protocol=file;nocheckout=1;branch=${KBRANCH},meta;name=machine,meta"
>
> KERNEL_REVISION_CHECKING=
> SRCREV=${AUTOREV}
> #BB_LOCALCOUNT_OVERRIDE = "1"
> LOCALCOUNT = "0"
>
> . I'm working with spidev and user space gpio so I needed to turn
> these things on in menuconfig so I ran:
>
> bitbake linux-yocto -c menuconfig and then made my changes.
>
> . Then I build the kernel with:
>
> bitbake linux-yocto -c compile -f
> bitbake linux-yocto
>
> My first clue that my changes were not getting picked up is I didn't
> have a /dev/spidev entry.  I found the board-omap3beagle.c file in tmp
> and it didn't have my changes.
>
> If I make another copy of my bare clone with git clone
> linux-yocto-3.0.git linux-yocto-3.0_test2 ... I see my changes.
>
> After I made my source changes I did:
>
> git add arch/arm/mach-omap2/board-omap3beagle.c
> git commit --signoff
> git status (nothing else checked out)
> git push origin master:master
>
> On the target, if I zcat config.gz, I see the changes I made to
> menuconfig but my source changes don't show up when I poke around in
> tmp.
>
> Not sure what went wrong but it doesn't appear to be picking up my
> kernel changes when I bitbake and I don't understand why.  Hopefully I
> provided enough info for someone to spot what I hosed up.

The beagle board would be building on the branch listed in the
meta-yocto layer.

KMACHINE_beagleboard = "yocto/standard/beagleboard"

Everything that you've done is fine, but pushing your changes to
master will ensure that they aren't checked out and built.

Cheers,

Bruce

>
> Regards,
>
> Brian
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto

Re: Does Edison work with Beagleboard & linux-yocto-3.0 kernel?

[Brian Hutchinson]

On Sun, Jan 22, 2012 at 10:55 PM, Bruce Ashfield
<bruce.ashfield@windriver.com> wrote:
>
> The beagle board would be building on the branch listed in the
> meta-yocto layer.
>
> KMACHINE_beagleboard = "yocto/standard/beagleboard"
>
> Everything that you've done is fine, but pushing your changes to
> master will ensure that they aren't checked out and built.

Ah, you nailed it!  Once I pushed my changes to
yocto/standard/beagleboard, the build system picked up my changes.
That is the step I hosed up.  It is working now that I corrected that!

Thanks again!

Brian