[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Daniel Stodden]

Hey.

I wrote a utility to boot Marvell SoCs over serial.

If that sounds generally useful, would you be so kind to merge

git://github.com/dns42/u-boot.git at dns/kwboot-1

If it's missing sth for that to happen, lemme know.

Cheers,
Daniel

PS: Sorry if you received this twice,
    first mail got stuck in moderation.
 

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Daniel Stodden]

On Sat, 2012-11-10 at 09:04 -0500, Sam Bulka wrote:
> I understand the advantage of the tool when installed on a PC. But not
> the advantage of adding it to Uboot, since the tool is needed when
> Uboot is broken and doesn't work anymore. How would you use this tool
> from within Uboot, if you can't access Uboot prompt? :) And if you can
> access the prompt, then you can reflash Uboot or change its
> environment without this tool.

Sam,

in case this didn't become clear: the receiving end to which this tool
talks resides in firmware deeply embedded within the SoC. It's a
function specific to Marvell processors, not u-boot, and activated by
talking to the chip before any other software environment is loaded.

These chips support booting from a whole variety of peripheral sources
to load system images from, both SPI flash and UART are just
alternatives. So it's in u-boot as part of the toolchain, not boot
firmware.

Daniel

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Luka Perkov]

On Sat, Nov 10, 2012 at 09:04:19AM -0500, Sam Bulka wrote:
> I understand the advantage of the tool when installed on a PC. But not
> the advantage of adding it to Uboot, since the tool is needed when
> Uboot is broken and doesn't work anymore. How would you use this tool
> from within Uboot, if you can't access Uboot prompt? :) And if you can
> access the prompt, then you can reflash Uboot or change its
> environment without this tool.

This tool must be used on PC and not in u-boot prompt. The sources for
this tool are in u-boot because it makes sense to put a tool like this
there. The tool is not compiled into u-boot binary.

There are other tools in the u-boot git repository that are not used in
u-boot but on the PC. Look at mkimage for example.

Luka

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Sam Bulka]

I understand the advantage of the tool when installed on a PC. But not
the advantage of adding it to Uboot, since the tool is needed when
Uboot is broken and doesn't work anymore. How would you use this tool
from within Uboot, if you can't access Uboot prompt? :) And if you can
access the prompt, then you can reflash Uboot or change its
environment without this tool.

On 11/10/12, Prafulla Wadaskar <prafulla@marvell.com> wrote:
>
>
>> -----Original Message-----
>> From: u-boot-bounces at lists.denx.de [mailto:u-boot-
>> bounces at lists.denx.de] On Behalf Of Sambul
>> Sent: 04 November 2012 18:28
>> To: u-boot at lists.denx.de
>> Subject: Re: [U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial
>> link.
>>
>> Wolfgang Denk <wd <at> denx.de> writes:
>>
>> >
>> > Please see http://www.denx.de/wiki/U-Boot/Patches and post proper
>> > patch(es).
>> >
>> > Thanks.
>> >
>> > Best regards,
>> >
>> > Wolfgang Denk
>> >
>>
>> I assume that tool is needed to boot a Plug via Serial instead of
>> using more
>> complex Jtag restore of Uboot, when Uboot is broken. So, what's the
>> advantage of
>> adding this tool to Uboot?
>
> Answer is within your question, let's say someone don't have jtag tool, and
> bricked the board, this tool enables to bring up board back to functional
> state (just need a serial console).
>
> Actually it can be used effectively for new board bring up without using
> JTAG.
>
> Regards...
> Prafulla . . .
>

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Prafulla Wadaskar]

> -----Original Message-----
> From: u-boot-bounces at lists.denx.de [mailto:u-boot-
> bounces at lists.denx.de] On Behalf Of Sambul
> Sent: 04 November 2012 18:28
> To: u-boot at lists.denx.de
> Subject: Re: [U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial
> link.
> 
> Wolfgang Denk <wd <at> denx.de> writes:
> 
> >
> > Please see http://www.denx.de/wiki/U-Boot/Patches and post proper
> > patch(es).
> >
> > Thanks.
> >
> > Best regards,
> >
> > Wolfgang Denk
> >
> 
> I assume that tool is needed to boot a Plug via Serial instead of
> using more
> complex Jtag restore of Uboot, when Uboot is broken. So, what's the
> advantage of
> adding this tool to Uboot?

Answer is within your question, let's say someone don't have jtag tool, and bricked the board, this tool enables to bring up board back to functional state (just need a serial console).

Actually it can be used effectively for new board bring up without using JTAG.

Regards...
Prafulla . . .

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Sambul]

Wolfgang Denk <wd <at> denx.de> writes:

> 
> Please see http://www.denx.de/wiki/U-Boot/Patches and post proper
> patch(es).
> 
> Thanks.
> 
> Best regards,
> 
> Wolfgang Denk
> 

I assume that tool is needed to boot a Plug via Serial instead of using more 
complex Jtag restore of Uboot, when Uboot is broken. So, what's the advantage of 
adding this tool to Uboot?

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Wolfgang Denk]

Dear Daniel Stodden,

In message <1335075976.10449.13.camel@ramone> you wrote:
> 
> I wrote a utility to boot Marvell SoCs over serial.
> 
> If that sounds generally useful, would you be so kind to merge

Please see http://www.denx.de/wiki/U-Boot/Patches and post proper
patch(es).

Thanks.

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
Winners never talk about glorious victories. That's  because  they're
the  ones  who  see  what the battlefield looks like afterwards. It's
only the losers who have glorious victories.
                                      - Terry Pratchett, _Small Gods_

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Daniel Stodden]

On Sun, 2012-04-22 at 11:46 -0700, Prafulla Wadaskar wrote:
> 
> > -----Original Message-----
> > From: u-boot-bounces at lists.denx.de [mailto:u-boot-
> > bounces at lists.denx.de] On Behalf Of Daniel Stodden
> > Sent: 22 April 2012 11:56
> > To: u-boot at lists.denx.de
> > Subject: [U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial
> > link.
> > 
> > 
> > Hey.
> > 
> > I wrote a utility to boot Marvell SoCs over serial.
> > 
> > If that sounds generally useful, would you be so kind to merge
> > 
> > git://github.com/dns42/u-boot.git at dns/kwboot-1
> > 
> > If it's missing sth for that to happen, lemme know.
> > 
> 
> Hi Daniel
> 
> Yes, this will find very useful utility/tool.
> May you please post the patch for the same?

I git-mailed the delta.

Tweaked docs and whitespace a little since the original mail. Removing
some residual stuff I thought I'd eventually support, but so far don't
(like driving to debug mode etc.).

That bumped up my upstream branch revision to dns/kwboot-3.

Things were mostly tested with a qnap TS-219P+ board. Guess at this
point it should at least be good enough to leave plugcomputer folks etc
with a solid brick/unbrick perspective.

Ideas + overall input certainly welcome.

Cheers,
Daniel

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Prafulla Wadaskar]

> -----Original Message-----
> From: u-boot-bounces at lists.denx.de [mailto:u-boot-
> bounces at lists.denx.de] On Behalf Of Daniel Stodden
> Sent: 22 April 2012 11:56
> To: u-boot at lists.denx.de
> Subject: [U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial
> link.
> 
> 
> Hey.
> 
> I wrote a utility to boot Marvell SoCs over serial.
> 
> If that sounds generally useful, would you be so kind to merge
> 
> git://github.com/dns42/u-boot.git at dns/kwboot-1
> 
> If it's missing sth for that to happen, lemme know.
> 

Hi Daniel

Yes, this will find very useful utility/tool.
May you please post the patch for the same?

Regards..
Prafulla . . .

[U-Boot] kwboot: Boot Marvell Kirkwood SoCs over a serial link.

[Daniel Stodden]

Hey.

I wrote a utility to boot Marvell SoCs over serial.

If that sounds generally useful, would you be so kind to merge

git://github.com/dns42/u-boot.git at dns/kwboot-1

If it's missing sth for that to happen, lemme know.

Cheers,
Daniel