barebox for leopardboard

barebox for leopardboard

[Tyler W. Wilson]

I am curious if anybody has done any work on getting barebox running on 
the leopardboard, so I do not reproduce effort.

I am especially interested in setting up a bootloader that directly 
supports USB and DFU, so that I do not need to use the UART/serial port.

Thank you,
Tyler

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

Re: barebox for leopardboard

[Sascha Hauer]

Hi Tyler,

On Fri, Feb 05, 2010 at 12:25:28PM -0400, Tyler W. Wilson wrote:
> I am curious if anybody has done any work on getting barebox running on  
> the leopardboard, so I do not reproduce effort.
>
> I am especially interested in setting up a bootloader that directly  
> supports USB and DFU, so that I do not need to use the UART/serial port.

I know nothing about the leopardboard, from googling I found out that
this is a beagleboard with a camera connected to it, right? Barebox runs
on the beagleboard, but unfortunately we do not have USB support for it.
You would have to port the usb driver for it, then DFU should work.
As a first shot you can compile the beagleboard defconfig and see how
far you get.

Sascha


-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

Re: barebox for leopardboard

[Tyler W. Wilson]

On 2/5/2010 1:49 PM, Sascha Hauer wrote:
> Hi Tyler,
>
> On Fri, Feb 05, 2010 at 12:25:28PM -0400, Tyler W. Wilson wrote:
>    
>> I am curious if anybody has done any work on getting barebox running on
>> the leopardboard, so I do not reproduce effort.
>>
>> I am especially interested in setting up a bootloader that directly
>> supports USB and DFU, so that I do not need to use the UART/serial port.
>>      
> I know nothing about the leopardboard, from googling I found out that
> this is a beagleboard with a camera connected to it, right? Barebox runs
> on the beagleboard, but unfortunately we do not have USB support for it.
> You would have to port the usb driver for it, then DFU should work.
> As a first shot you can compile the beagleboard defconfig and see how
> far you get.
>
> Sascha
>
>    
Unfortunately, it is a little different - it uses a DaVinci DM355 
processor, which is an ARM9 + custom DSP. The beagleboard uses an OMAP3x 
of course. Unfortunately, even I am confused on the TI naming scheme as 
to what is an OMAP versus what is a DaVinci.

I will probably do as you suggest - start with the beagleboard configs 
and also look at the leopardboard code in the ti u-boot repo. Hopefully 
that will give me enough data to get the basic barebox running.

The USB worries me, since I am just familiar enough with it to know how 
complex it can be. Time will tell.

Thank you for your input.

Tyler

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

Re: barebox for leopardboard

[Sascha Hauer]

On Fri, Feb 05, 2010 at 01:58:54PM -0400, Tyler W. Wilson wrote:
> On 2/5/2010 1:49 PM, Sascha Hauer wrote:
>> Hi Tyler,
>>
>> On Fri, Feb 05, 2010 at 12:25:28PM -0400, Tyler W. Wilson wrote:
>>    
>>> I am curious if anybody has done any work on getting barebox running on
>>> the leopardboard, so I do not reproduce effort.
>>>
>>> I am especially interested in setting up a bootloader that directly
>>> supports USB and DFU, so that I do not need to use the UART/serial port.
>>>      
>> I know nothing about the leopardboard, from googling I found out that
>> this is a beagleboard with a camera connected to it, right? Barebox runs
>> on the beagleboard, but unfortunately we do not have USB support for it.
>> You would have to port the usb driver for it, then DFU should work.
>> As a first shot you can compile the beagleboard defconfig and see how
>> far you get.
>>
>> Sascha
>>
>>    
> Unfortunately, it is a little different - it uses a DaVinci DM355  
> processor, which is an ARM9 + custom DSP. The beagleboard uses an OMAP3x  
> of course. Unfortunately, even I am confused on the TI naming scheme as  
> to what is an OMAP versus what is a DaVinci.

Then I'm afraid you have to start porting from scratch. If you're lucky
they share some peripherals.

>
> I will probably do as you suggest - start with the beagleboard configs  
> and also look at the leopardboard code in the ti u-boot repo. Hopefully  
> that will give me enough data to get the basic barebox running.

Experience showed that it's a good way to start barebox from U-Boot as a
second stage loader and add the low level init stuff later.This way you
should be running up quite fast. Feel free to ask further questions
about it.

>
> The USB worries me, since I am just familiar enough with it to know how  
> complex it can be. Time will tell

What kind of controller does this SoC have, EHCI, OHCI?

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

Re: barebox for leopardboard

[Anand Gadiyar]

>>
>> The USB worries me, since I am just familiar enough with it to know how
>> complex it can be. Time will tell
>
> What kind of controller does this SoC have, EHCI, OHCI?
>

I'm not familiar with this SoC, but a couple of quick searches on google
led me to the USB controller's reference guide. It looks like MUSB with
CPPI DMA, similar to what is in other Davinci chips. If so, there's a kernel
driver for it in Linux (see drivers/usb/musb/) with support for the DMA
engine as well.

OMAP3 uses MUSB with its own "Inventra" DMA engine.

- Anand

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

RE: barebox for leopardboard

[Premi, Sanjeev]

> -----Original Message-----
> From: barebox-bounces@lists.infradead.org 
> [mailto:barebox-bounces@lists.infradead.org] On Behalf Of 
> Tyler W. Wilson
> Sent: Friday, February 05, 2010 11:29 PM
> To: barebox@lists.infradead.org
> Subject: Re: barebox for leopardboard
> 
> On 2/5/2010 1:49 PM, Sascha Hauer wrote:
> > Hi Tyler,
> >
> > On Fri, Feb 05, 2010 at 12:25:28PM -0400, Tyler W. Wilson wrote:
> >    
> >> I am curious if anybody has done any work on getting 
> barebox running on
> >> the leopardboard, so I do not reproduce effort.
> >>
> >> I am especially interested in setting up a bootloader that directly
> >> supports USB and DFU, so that I do not need to use the 
> UART/serial port.
> >>      
> > I know nothing about the leopardboard, from googling I 
> found out that
> > this is a beagleboard with a camera connected to it, right? 
> Barebox runs
> > on the beagleboard, but unfortunately we do not have USB 
> support for it.
> > You would have to port the usb driver for it, then DFU should work.
> > As a first shot you can compile the beagleboard defconfig 
> and see how
> > far you get.
> >
> > Sascha
> >
> >    
> Unfortunately, it is a little different - it uses a DaVinci DM355 
> processor, which is an ARM9 + custom DSP. The beagleboard 
> uses an OMAP3x 
> of course. Unfortunately, even I am confused on the TI naming 
> scheme as 
> to what is an OMAP versus what is a DaVinci.
> 
> I will probably do as you suggest - start with the 
> beagleboard configs 
> and also look at the leopardboard code in the ti u-boot repo. 
> Hopefully 
> that will give me enough data to get the basic barebox running.

Tyler,

You may want to post specific queries to davinci-linux-open-source@linux.davincidsp.com

Best regards,
Sanjeev

> 
> The USB worries me, since I am just familiar enough with it 
> to know how 
> complex it can be. Time will tell.
> 
> Thank you for your input.
> 
> Tyler
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox