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'[ARM] at91sam9261 - anyone else using?'
2007\03\19@164112 by M. Adam Davis

face picon face
Well hey, it's a new tag!

So I'm working on a project with the Atmel at91sam9261 ARM processor.
I've got the evaluation kit, and I'm working through getting a custom
build of the Linux kernel going.

Right now I've got three different Atmel released linux kernels that
I've tried, but none of them have all the devices I need (frame buffer
and LCD, all the serial ports, touchscreen, etc) and the audio is only
a DAC.  I'm planning on adapting the audio chip and linux code from
the 9200 kit which is a full AC97 codec.

Does anyone have any resources that goes step by step through the
process of building a cross compiler, configuring the kernel,
compiling the kernel, and then packaging it and the root file system
to be used on the eval kit?  Or guides that give some portion of the
process?

I'd rather avoid the cost of, say, TimeSys, or another commercial
support vendor.  But I'm a linux newbie on top of doing something many
experienced linux users wouldn't be able to do anyway.

So...  Any tips before I bang my head against it some more?

-Adam

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2007\03\19@165805 by YAP

picon face
On 3/19/07, M. Adam Davis <spam_OUTstienmanTakeThisOuTspamgmail.com> wrote:
{Quote hidden}

I know nothing about the Atmel at91sam9261 but...

By this ( http://www.oreilly.com/catalog/belinuxsys/ ) book. It will
get you going and is well spent money. Also have a look at SnapGear
(http://www.snapgear.org/snapgear/downloads.html) which can be used as
a good starting point with tools, source etc for some different
platforms including ARM.

Cheers
/Ake


--
---
Ake Hedman (YAP - Yet Another Programmer)
eurosource, Brattbergavagen 17, 820 50 LOS, Sweden
Phone: (46) 657 413430 Cellular: (46) 73 0533 146
Company home: http://www.dofscandinavia.com
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Automated home: http://www.vscp.org

2007\03\19@180625 by Bob Blick

face picon face

> Does anyone have any resources that goes step by
> step through the
> process of building a cross compiler, configuring
> the kernel,
> compiling the kernel, and then packaging it and the
> root file system
> to be used on the eval kit?  Or guides that give
> some portion of the
> process?
>

You might post that question to the debian-embedded
mailing list, too.

Cheerful regards,

Bob

2007\03\22@093236 by M. Adam Davis

face picon face
Thanks for the tip!  I have that book now, and also purchased a more
recent similar book, "Embedded Linux Primer" ( 978-0131679849 ).  I'll
give a short review of both later.

I hadn't looked at snapgear before.  I did just build a new
development computer as my previous system took just under 4 hours for
a compile build.  Unfortunately I purchased it without checking
hardware compatability, and it may be that I'll have to wait a few
months before a standard (stable) distribution comes out that fully
supports it.  Until then, virtual pc and ubuntu are probably going to
be doing the job.

-Adam

On 3/19/07, YAP <.....x112358KILLspamspam@spam@gmail.com> wrote:
{Quote hidden}

> -

2007\03\22@093304 by M. Adam Davis

face picon face
Thanks for the tip!  I have that book now, and also purchased a more
recent similar book, "Embedded Linux Primer" ( 978-0131679849 ).  I'll
give a short review of both later.

I hadn't looked at snapgear before.  I did just build a new
development computer as my previous system took just under 4 hours for
a compile build.  Unfortunately I purchased it without checking
hardware compatability, and it may be that I'll have to wait a few
months before a standard (stable) distribution comes out that fully
supports it.  Until then, virtual pc and ubuntu are probably going to
be doing the job.

-Adam

On 3/19/07, YAP <.....x112358KILLspamspam.....gmail.com> wrote:
{Quote hidden}

> -

2007\03\22@164821 by Zik Saleeba

face picon face
Hi Adam,

I'm also doing some development for the at91sam9261. I'm still putting
together a prototype however so I'm not quite where you are yet.

The evaluation kit (at91sam9261-ek) says it comes with linux and an
LCD. Do they provide the drivers you need?

Cheers,
Zik

On 3/23/07, M. Adam Davis <stienmanspamspam_OUTgmail.com> wrote:
{Quote hidden}

2007\03\23@120918 by M. Adam Davis

face picon face
The linux demo provided is a collection of binaries, with no source or
build instructions.  It's a nice demo, but doesn't have the stuff I
need, and has a bunch of stuff I don't need.

The drivers for most of the stuff in the chip and on the board seem to
be in the latest kernel (2.6.20) but as I haven't yet completed a
kernel and root filesystem build I can't verify that.  The Linux
package they give you shows off most of the stuff.

What I really need is a from-scratch tutorial on how to build a kernel
and root file system for the EK kit, and then put it on the board.
I've got lots of bits and pieces (such as getting it on the board) but
no single step-by-step method for the entire process.  No wonder that
companies like TimeSys are around - it's not trivial.

One of these days Linux will just "work"...  :-)

-Adam

On 3/22/07, Zik Saleeba <RemoveMEzikTakeThisOuTspamzikzak.net> wrote:
{Quote hidden}

>

2007\03\24@031647 by Zik Saleeba

face picon face
I wonder if they're aware that they're violating the terms of the GPL
license in keeping their source code secret.

Here's another 9261 dev kit which comes with the linux source. You
should be able to adapt that I'd say.

http://www.ronetix.at/starter_kit_9261.html

Cheers,
Zik

On 3/24/07, M. Adam Davis <stienmanEraseMEspam.....gmail.com> wrote:
{Quote hidden}

> >

2007\03\26@082515 by M. Adam Davis

face picon face
I've looked at the Ronetix stuff before, but not very closely.

I finally get the atmel modified buildroot to work and ended up with a
kernel that boots on my board (I'm quite thrilled!) so now I'm working
on configuring the linux kernel, and I'll probably spend some time
looking at other build systems to see what the differences are.

As far as the GPL is concerned, it appears the Atmel largely uses this
customized buildroot script for most of its released linux releases,
so the only thing they need to do better is put a text file in their
releases indicating where to get it.

I'll probably be making a webpage or two concerning the process I went
through, both for others as well as my own documentation.

-Adam

On 3/24/07, Zik Saleeba <EraseMEzikspamspamspamBeGonezikzak.net> wrote:
{Quote hidden}

> > >

2007\03\26@110338 by Alan B. Pearce

face picon face
> What I really need is a from-scratch tutorial on how to build a kernel
> and root file system for the EK kit, and then put it on the board.
> I've got lots of bits and pieces (such as getting it on the board) but
> no single step-by-step method for the entire process.  No wonder that
> companies like TimeSys are around - it's not trivial.

Does
http://tree.celinuxforum.org/CelfPubWiki/TechConference2005Docs?action=AttachFile&do=get&target=Optimizing_Linux_ARM.pdf
help? Found while googling "linux arm"

2007\03\26@112202 by M. Adam Davis

face picon face
On 3/26/07, Alan B. Pearce <@spam@A.B.Pearce@spam@spamspam_OUTrl.ac.uk> wrote:
> Does
> tree.celinuxforum.org/CelfPubWiki/TechConference2005Docs?action=AttachFile&do=get&target=Optimizing_Linux_ARM.pdf
> help? Found while googling "linux arm"
>

No, it's a fairly basic overview of the newer v6 ARM architecture,
roadmap, and how they intend to support Linux over time.

Did provide some useful connections to other organizations I need to look into:

http://www.codesourcery.com/gnu_toolchains/arm
ARM is working with codesourcery to optomize the ARM support on the
GNU toolchain

http://www.celinuxforum.org/
Consumer electronics linux forum

And then the Linux foundation/OSDL:
http://www.linux-foundation.org/

-Adam

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Moving in southeast Michigan? Buy my house: http://ubasics.com/house/

Interested in electronics? Check out the projects at http://ubasics.com

Building your own house? Check out http://ubasics.com/home/

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