[beagleboard] Linux Kernel tree for porting to mailine and basic support.

[mindentropy]

Hi,

What is the Linux kernel tree which is used to provide mainline support for 
the beaglebone black? I would like to contribute towards mainlining and I 
would like to know which is the tree for which the beaglebone black 
development happens.

I am assuming the tree is  https://github.com/beagleboard/linux. Please 
correct me if I am wrong.

Thanks in advance,
Gautam.

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[beagleboard] Debian 9.2, U-Boot Overlays and SGX

[pablo . a . mayobre]

Hi! This is my first time here and I wanted some help to setup my BBB

What's the best way to get a Debian 9.2 - Kernel 4.14 image with support 
for U-Boot device tree overlays 
(https://github.com/beagleboard/bb.org-overlays/tree/master/tools/beaglebone-universal-io)
 
while also getting the SGX driver?

I have investigated a lot but I need to make sure that this "guide" is 
correct (since I don't wanna make any irreparable mistake)

I suppose that I need to get the Stretch Snapshot lxqt - Flasher: 
(stretch-lxqt) (All BeagleBone Variants with a 4GB eMMC) image from:
https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Image_Testing_Snapshots

This comes with Kernel 4.9 so I would need to upgrade following the 
instructions in:
https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Kernel_Opions
And I would install Mainline 4.14

After that, I would follow this instructions to get the SGX driver:
https://elinux.org/BeagleBoardDebian#SGX_BeagleBone.2FBeagleBone_Black

But instead of checking out the 4.4 branch I would checkout the 4.14 branch:
https://github.com/RobertCNelson/bb-kernel/tree/am33x-v4.14

Finally I would upgrade U-Boot
https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays

And hopefully I wouldn't break anything. Is this guide correct? Am I 
missing something?
Thanks in advance

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Re: [beagleboard] Re: PocketBeagles are Unstable

[Graham]

Same 'Stretch'  bone-debian-9.2-iot-armhf-2017-11-19-4gb.img
running on uSD card on a Rev C BeagleBone Black running on 
the same power supply is stable like a rock.

--- Graham

==


>

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[beagleboard] Re: Boot bare metal application - MLO no longer used?

[acheesehead]

MLO looks for uboot.bin. MLO can be rewritten to look for your application 
or rename your application to uboot.bin. I chose to rewrite MLO, but forget 
why. Was many years ago on Beagleboard Xm.

On Saturday, November 25, 2017 at 4:44:51 AM UTC-7, mike.ma...@gmail.com 
wrote:
>
> Hi,
>
> I'm running a bare metal software on my BBB. It is started via a special 
> boot-application, a program named "MLO" located on eMMC card which then 
> itself starts my application from microSD card. This is one boot option of 
> the AM3358 and used by default.
>
> Now I tried do to the same with the PocketBeagle, in this case with MLO 
> and my application both on the microSD card - unfortunately it does not 
> work, the application is not started.
>
> My question: is there something fundamental different with the Octavo SoC? 
> And is there a serial debug interface available too, similar to the one 
> from the BBB where I can see some messages printed to serial console on 
> boot?
>
> Thanks!
>
>

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Re: [beagleboard] Re: PocketBeagles are Unstable

[evilwulfie]

LOL  With this email coming from Graham I seriously doubt it.

On 11/25/2017 10:13 AM, acheesehead wrote:
> A likely culprit is the power supply.
>
> On Friday, November 24, 2017 at 7:55:56 AM UTC-7, Graham wrote:
>
> I have two PocketBeagles.
>
> Both are exhibiting random reboots, two to four times per day. No 
> indication in syslog as to any cause or problem. No pattern to 
> the reboots. Can happen while I an logged into the PB editing python 
> scripts with nano, or can happen in the middle of the night when 
> absolutely nothing is happening.
>
> Both are powered from Vin, running from a trusted lab bench supply 
> with plenty of reserve current. I have added extra bulk
> capacitance on 
> the Vin input, and also switched lab bench supplies to make sure it 
> was not a power supply problem.
>
> So, no USB-gadget interface running.
> No modifications to hardware or kernel. No modifications to the 
> system software.
>
> One is running the Oct 10 IoT release version
> bone-debian-9.2-iot-armhf-2017-10-10-4gb.img
> Linux PB1 4.4.91-ti-r133 #1 SMP Tue Oct 10 05:18:08 UTC 2017 armv7l
>
> The other is running the Stretch IoT weekly snapshot from 11-19
> bone-debian-9.2-iot-armhf-2017-11-19-4gb.img
> Linux beaglebone 4.9.61-ti-r76 #1 SMP PREEMPT Mon Nov 13 20:24:26
> UTC 2017 armv7l
>
> Both are running USB2 to Ethernet dongles on USB Port1 so I can have 
> remote Ethernet access. To make sure it was not the USB-to-Ethernet 
> drivers, I ran one for a day, without the Ethernet interface, just 
> watched it on the UART0 Console Port, no programs running,
> and it still does the same thing.
>
> I think this should be easy to reproduce.
>
> Same/similar symptoms to the random reboots we were having on the
> BBB a year or two ago.
>
> --- Graham
>
> ==
>
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[beagleboard] Re: PocketBeagles are Unstable

[acheesehead]

A likely culprit is the power supply.

On Friday, November 24, 2017 at 7:55:56 AM UTC-7, Graham wrote:
>
> I have two PocketBeagles.
>
> Both are exhibiting random reboots, two to four times per day. No 
> indication in syslog as to any cause or problem. No pattern to 
> the reboots. Can happen while I an logged into the PB editing python 
> scripts with nano, or can happen in the middle of the night when 
> absolutely nothing is happening.
>
> Both are powered from Vin, running from a trusted lab bench supply 
> with plenty of reserve current. I have added extra bulk capacitance on 
> the Vin input, and also switched lab bench supplies to make sure it 
> was not a power supply problem.
>
> So, no USB-gadget interface running.
> No modifications to hardware or kernel. No modifications to the 
> system software.
>
> One is running the Oct 10 IoT release version
> bone-debian-9.2-iot-armhf-2017-10-10-4gb.img
> Linux PB1 4.4.91-ti-r133 #1 SMP Tue Oct 10 05:18:08 UTC 2017 armv7l
>
> The other is running the Stretch IoT weekly snapshot from 11-19
> bone-debian-9.2-iot-armhf-2017-11-19-4gb.img
> Linux beaglebone 4.9.61-ti-r76 #1 SMP PREEMPT Mon Nov 13 20:24:26 UTC 2017 
> armv7l
>
> Both are running USB2 to Ethernet dongles on USB Port1 so I can have 
> remote Ethernet access. To make sure it was not the USB-to-Ethernet 
> drivers, I ran one for a day, without the Ethernet interface, just 
> watched it on the UART0 Console Port, no programs running,
> and it still does the same thing.
>
> I think this should be easy to reproduce.
>
> Same/similar symptoms to the random reboots we were having on the BBB a 
> year or two ago.
>
> --- Graham
>
> ==
>

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Re: [beagleboard] Boot bare metal application - MLO no longer used?

[Robert Nelson]

On Sat, Nov 25, 2017 at 5:44 AM,   wrote:
> Hi,
>
> I'm running a bare metal software on my BBB. It is started via a special
> boot-application, a program named "MLO" located on eMMC card which then
> itself starts my application from microSD card. This is one boot option of
> the AM3358 and used by default.
>
> Now I tried do to the same with the PocketBeagle, in this case with MLO and
> my application both on the microSD card - unfortunately it does not work,
> the application is not started.
>
> My question: is there something fundamental different with the Octavo SoC?
> And is there a serial debug interface available too, similar to the one from
> the BBB where I can see some messages printed to serial console on boot?

Sounds like your version of MLO is too old..  Grab one of our v2017.11 builds...

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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[beagleboard] Re: Boot bare metal application - MLO no longer used?

[Graham]

The default serial console port for the PocketBeagle is UART0, labeled U0 
TX and RX on the bottom of the card.
Same as Beaglebone, 3.3V, 115200 baud 8N1. 
Works just like the BBB.

--- Graham

==

On Saturday, November 25, 2017 at 5:44:51 AM UTC-6, mike.ma...@gmail.com 
wrote:
>
> Hi,
>
> I'm running a bare metal software on my BBB. It is started via a special 
> boot-application, a program named "MLO" located on eMMC card which then 
> itself starts my application from microSD card. This is one boot option of 
> the AM3358 and used by default.
>
> Now I tried do to the same with the PocketBeagle, in this case with MLO 
> and my application both on the microSD card - unfortunately it does not 
> work, the application is not started.
>
> My question: is there something fundamental different with the Octavo SoC? 
> And is there a serial debug interface available too, similar to the one 
> from the BBB where I can see some messages printed to serial console on 
> boot?
>
> Thanks!
>
>

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[beagleboard] Boot bare metal application - MLO no longer used?

[mike . maikaefer]

Hi,

I'm running a bare metal software on my BBB. It is started via a special 
boot-application, a program named "MLO" located on eMMC card which then 
itself starts my application from microSD card. This is one boot option of 
the AM3358 and used by default.

Now I tried do to the same with the PocketBeagle, in this case with MLO and 
my application both on the microSD card - unfortunately it does not work, 
the application is not started.

My question: is there something fundamental different with the Octavo SoC? 
And is there a serial debug interface available too, similar to the one 
from the BBB where I can see some messages printed to serial console on 
boot?

Thanks!

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