[U-Boot] u-boot vs. Cavium 5010 pci init

[U-Boot] u-boot vs. Cavium 5010 pci init

[sywang]

Hello, everyone, 

 

Do you know what bugs or problems there are on u-boot with Cavium CN5010 PCI
init?  Now I have the following on the board with Cavium CN5010. The board
will hang when PCI init with the U-boot. Any suggestions are welcome. How to
identify if the issue's cause is HW or SW? 

 

 

Thanks!

Shuyou

[U-Boot] u-boot vs. Cavium 5010 pci init

[Andreas Bießmann]

Dear sywang,

Am 26.09.2010 um 02:21 schrieb sywang:

> Hello, everyone, 
> 
> Do you know what bugs or problems there are on u-boot with Cavium CN5010 PCI
> init?

The problem is that the whole cavium code is proprietary. They develop their cvmx code completely out of tree and link the code at file basis into a specific tree with more proprietary changes. Since this code is completely unknown to the community the community can not help you solving SW issues. Therefor go and ask cavium for support.
On the other hand you may ask cavium to push their proprietary code upstream. Then it would be possible (some day) to solve those issues within the community.
The third chance is to take your documentation, the current code and current u-boot tree and begin to implement open source support for your device.

> Now I have the following on the board with Cavium CN5010. The board
> will hang when PCI init with the U-boot. Any suggestions are welcome. How to
> identify if the issue's cause is HW or SW? 

If you have started building your own u-boot for a working device/board then I guess it is a SW issue (missing support in mainline). If you have received a _not_ working device/board it may be HW related ...

regards

Andreas Bie?mann

[U-Boot] u-boot vs. Cavium 5010 pci init

[sywang]

Andreas, 

Now the key is that I am not sure if the board can work or not. 

Who had the similar experience ( debugged the board with CN5010)? Please
email to me. Thanks for your help. 


Thanks!
Shuyou 

-----Original Message-----
From: Andreas Bie?mann [mailto:andreas.devel at googlemail.com] 
Sent: 2010?9?26? 14:53
To: sywang
Cc: u-boot at lists.denx.de
Subject: Re: [U-Boot] u-boot vs. Cavium 5010 pci init

Dear sywang,

Am 26.09.2010 um 02:21 schrieb sywang:

> Hello, everyone, 
> 
> Do you know what bugs or problems there are on u-boot with Cavium CN5010
PCI
> init?

The problem is that the whole cavium code is proprietary. They develop
their cvmx code completely out of tree and link the code at file basis into
a specific tree with more proprietary changes. Since this code is
completely unknown to the community the community can not help you solving
SW issues. Therefor go and ask cavium for support.
On the other hand you may ask cavium to push their proprietary code
upstream. Then it would be possible (some day) to solve those issues within
the community.
The third chance is to take your documentation, the current code and
current u-boot tree and begin to implement open source support for your
device.

> Now I have the following on the board with Cavium CN5010. The board
> will hang when PCI init with the U-boot. Any suggestions are welcome. How
to
> identify if the issue's cause is HW or SW? 

If you have started building your own u-boot for a working device/board
then I guess it is a SW issue (missing support in mainline). If you have
received a _not_ working device/board it may be HW related ...

regards

Andreas Bie?mann

[U-Boot] u-boot vs. Cavium 5010 pci init

[Wolfgang Denk]

Dear "sywang",

In message <20100926002106.1240128159@theia.denx.de> you wrote:
> 
> Do you know what bugs or problems there are on u-boot with Cavium CN5010 PCI
> init?  Now I have the following on the board with Cavium CN5010. The board
> will hang when PCI init with the U-boot. Any suggestions are welcome. How to
> identify if the issue's cause is HW or SW? 

Cavium never provided free access to their code, nor did they ever
attempt to push their changes upstream.

In the result, their code is completely unknown to us, and we cannot
help you.

Please contact Cavium technical support.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
How many NASA managers does it take to screw in a lightbulb?  "That's
a known problem... don't worry about it."

[U-Boot] u-boot vs. Cavium 5010 pci init

[Graeme Russ]

On 26/09/10 18:24, Wolfgang Denk wrote:
> Dear "sywang",
> 
> In message <20100926002106.1240128159@theia.denx.de> you wrote:
>>
> Cavium never provided free access to their code, nor did they ever
> attempt to push their changes upstream.

Would they not, therefore, be in breach of the GPL?

Regards,

Graeme

[U-Boot] u-boot vs. Cavium 5010 pci init

[Wolfgang Denk]

Dear Graeme Russ,

In message <4C9F087D.3010502@gmail.com> you wrote:
>
> > Cavium never provided free access to their code, nor did they ever
> > attempt to push their changes upstream.
> 
> Would they not, therefore, be in breach of the GPL?

According to the GPL, you don't have to provide free access to
everybody.

It is sufficient to accompany the delivery of U-Boot to each of their
customers with a written offer to provide any third party a copy of
the corresponding source code.

Of course, each of Cavium's customers could request that code, and
then put it on a public server - but it seems nobody ever did.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Was hei?t Windows auf Indianisch? - "Wei?er  Mann,  der  auf  Sanduhr
wartet!"

[U-Boot] u-boot vs. Cavium 5010 pci init

[sywang]

Who debuged u-boot on the board based on Cavium CN5010? 

Thanks!
Shuyou 

-----Original Message-----
From: Wolfgang Denk [mailto:wd at denx.de] 
Sent: 2010?9?26? 16:56
To: Graeme Russ
Cc: sywang; u-boot at lists.denx.de
Subject: Re: [U-Boot] u-boot vs. Cavium 5010 pci init

Dear Graeme Russ,

In message <4C9F087D.3010502@gmail.com> you wrote:
>
> > Cavium never provided free access to their code, nor did they ever
> > attempt to push their changes upstream.
> 
> Would they not, therefore, be in breach of the GPL?

According to the GPL, you don't have to provide free access to
everybody.

It is sufficient to accompany the delivery of U-Boot to each of their
customers with a written offer to provide any third party a copy of
the corresponding source code.

Of course, each of Cavium's customers could request that code, and
then put it on a public server - but it seems nobody ever did.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Was hei?t Windows auf Indianisch? - "Wei?er  Mann,  der  auf  Sanduhr
wartet!"