[U-Boot-Users] How to Port U-Boot to New Hardware Platform?

[U-Boot-Users] How to Port U-Boot to New Hardware Platform?

[Haifeng.Wu at infineon.com]

Dear All,

I'm fairly new to U-Boot and not familiar with the architecture of
U-Boot.
But I think the directory hierarchy can tell me that U-Boot divides all
the codes into board-related, CPU-related and common.
I'm interested in porting U-Boot to our hardware platform, yet I don't
know which code should be modified or added.

Have some one done U-Boot porting for new hardware platform before?
Would you like to share how to do it with me?

I'm looking forward to hearing from you.

B.R
Wu Haifeng

[U-Boot-Users] How to Port U-Boot to New Hardware Platform?

[Ben Warren]

On Wed, 2007-02-28 at 11:24 +0800, Haifeng.Wu at infineon.com wrote:
> Dear All,
> 
> I'm fairly new to U-Boot and not familiar with the architecture of
> U-Boot.
> But I think the directory hierarchy can tell me that U-Boot divides all
> the codes into board-related, CPU-related and common.
> I'm interested in porting U-Boot to our hardware platform, yet I don't
> know which code should be modified or added.
> 
> Have some one done U-Boot porting for new hardware platform before?
> Would you like to share how to do it with me?

As we always do in engineering, find something similar to what you have
and copy it as much as possible.  If you have a new CPU, of course it's
much more complicated.

Board-specific stuff is in two places in the U-boot source hierarchy:

include/configs/<YOUR_BOARD>.h	- configuration information
board/<your_board>/		- board-specific code

You'll also have to modify the main Makefile, again following the
example of a similar board.

Make sure you start with the latest from the git repo:

cg-clone git://www.denx.de/git/<project_name>  <your_repository_name>/

Recommended reading:
README
http://www.denx.de/wiki/DULG/Manual
http://www.kernel.org/pub/software/scm/git/docs/everyday.html

regards,
Ben

[U-Boot-Users] How to Port U-Boot to New Hardware Platform?

[ThomasB]

Hi,
I'm also fairly new  with U-Boot, but I found an usefull link:
http://www.phptr.com/articles/article.asp?p=674698&seqNum=4&rl=1 which
explain shortly how to port a new board on U-Boot.
I hope it will be usefull for you.
Bye,
Thomas

2007/2/28, Ben Warren <bwarren@qstreams.com>:
>
> On Wed, 2007-02-28 at 11:24 +0800, Haifeng.Wu at infineon.com wrote:
> > Dear All,
> >
> > I'm fairly new to U-Boot and not familiar with the architecture of
> > U-Boot.
> > But I think the directory hierarchy can tell me that U-Boot divides all
> > the codes into board-related, CPU-related and common.
> > I'm interested in porting U-Boot to our hardware platform, yet I don't
> > know which code should be modified or added.
> >
> > Have some one done U-Boot porting for new hardware platform before?
> > Would you like to share how to do it with me?
>
> As we always do in engineering, find something similar to what you have
> and copy it as much as possible.  If you have a new CPU, of course it's
> much more complicated.
>
> Board-specific stuff is in two places in the U-boot source hierarchy:
>
> include/configs/<YOUR_BOARD>.h  - configuration information
> board/<your_board>/             - board-specific code
>
> You'll also have to modify the main Makefile, again following the
> example of a similar board.
>
> Make sure you start with the latest from the git repo:
>
> cg-clone git://www.denx.de/git/<project_name>  <your_repository_name>/
>
> Recommended reading:
> README
> http://www.denx.de/wiki/DULG/Manual
> http://www.kernel.org/pub/software/scm/git/docs/everyday.html
>
> regards,
> Ben
>
>
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> U-Boot-Users mailing list
> U-Boot-Users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/u-boot-users
>



-- 
Plus d'informations me concernant:
http://psyphi.zeblog.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.denx.de/pipermail/u-boot/attachments/20070228/45c5d001/attachment.htm 

[U-Boot-Users] How to Port U-Boot to New Hardware Platform?

[Haifeng.Wu at infineon.com]

Hello Ben, 

Thank you for your advice and I've read through the README file in the
top directory and the Manual on the wiki site.
Both of them emphasize the configuration for different platforms, with
less on how to port it.
Here I've found that in the 7th chapter of <Embedded Linux Primer> the
function and basic concept of bootloader is clearly explained.
I hope that it will help those guys like me.

I've tried to find the most similar board to our platform, but I don't
know where can find more information on the boards list in the /configs
directory.
Google gives too many useless results, which always give just some words
on it, yet not details.

Thank you for your help.

BEST REGRADS AND HAVE A NICE DAY

WU Haifeng


-----Original Message-----
From: Ben Warren [mailto:bwarren at qstreams.com] 
Sent: Wednesday, February 28, 2007 10:39 PM
To: Wu Haifeng
Cc: u-boot-users at lists.sourceforge.net
Subject: Re: [U-Boot-Users] How to Port U-Boot to New Hardware Platform?

On Wed, 2007-02-28 at 11:24 +0800, Haifeng.Wu at infineon.com wrote:
> Dear All,
> 
> I'm fairly new to U-Boot and not familiar with the architecture of 
> U-Boot.
> But I think the directory hierarchy can tell me that U-Boot divides 
> all the codes into board-related, CPU-related and common.
> I'm interested in porting U-Boot to our hardware platform, yet I don't

> know which code should be modified or added.
> 
> Have some one done U-Boot porting for new hardware platform before?
> Would you like to share how to do it with me?

As we always do in engineering, find something similar to what you have
and copy it as much as possible.  If you have a new CPU, of course it's
much more complicated.

Board-specific stuff is in two places in the U-boot source hierarchy:

include/configs/<YOUR_BOARD>.h	- configuration information
board/<your_board>/		- board-specific code

You'll also have to modify the main Makefile, again following the
example of a similar board.

Make sure you start with the latest from the git repo:

cg-clone git://www.denx.de/git/<project_name>  <your_repository_name>/

Recommended reading:
README
http://www.denx.de/wiki/DULG/Manual
http://www.kernel.org/pub/software/scm/git/docs/everyday.html

regards,
Ben

[U-Boot-Users] How to Port U-Boot to New Hardware Platform?

[Ben Warren]

--- Haifeng.Wu at infineon.com wrote:

> Hello Ben, 
> 
> Thank you for your advice and I've read through the
> README file in the
> top directory and the Manual on the wiki site.
> Both of them emphasize the configuration for
> different platforms, with
> less on how to port it.
> Here I've found that in the 7th chapter of <Embedded
> Linux Primer> the
> function and basic concept of bootloader is clearly
> explained.
> I hope that it will help those guys like me.
> 
> I've tried to find the most similar board to our
> platform, but I don't
> know where can find more information on the boards
> list in the /configs
> directory.
> Google gives too many useless results, which always
> give just some words
> on it, yet not details.
> 
> Thank you for your help.
> 
> BEST REGRADS AND HAVE A NICE DAY
> 
> WU Haifeng

Porting U-boot is not a trivial task, but neither is
it impossible.  The one thing that I can't stress
strongly enough is that you need to be very familiar
with the hardware on your board.  You need to know
what every chip does and understand its interfaces. 
If you feel you have the necessary skills and are
willing to make the investment in really learning this
stuff, you will find no shortage of help on this list.

Very few people take on the task of building a board
core from scratch.  Most were originally based on some
kind of reference design, and many of those reference
designs are supported in U-boot.  Every board has a
CPU, RAM and some kind of non-volatile storage,
usually parallel NOR flash.  Most have networking
capabilities.  If you can identify these parts, you
can hopefully find a good starting point.  If you're
stuck, send an e-mail listing these parts and somebody
may be able to point you in the right direction.

regards,
Ben