mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Raj Swaminathan <rajshyam@gmail.com>
To: Lucas Stach <l.stach@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: Passing devicetree to kernel
Date: Thu, 13 Aug 2015 09:58:51 -0700	[thread overview]
Message-ID: <CAE2nzut0jYEGFSXdH72ZYaquH+Ty_-o1N2joUuwdH+S26omrmw@mail.gmail.com> (raw)
In-Reply-To: <1439480360.13210.22.camel@pengutronix.de>

Hi Lucas,

I am using Altera's cyclone 5 SoCFPGA.

Barebox version 2015.04.0
Linux is rocketboards version 3.18.0

I put some debug statements into the code at common/bootm.c and found
that the internal device tree is being used and it is the right
version. The problem is probably in the way I'm manipulating the
devicetree in barebox. I'm trying to enable some devices and fill up
the mac address field in barebox before i hand off the same devicetree
to the kernel.  One way i have gotten around the problem is to keep 2
versions of the devicetree but have barebox open the kernel devicetree
file and modify it.

Best,
raj











On Thu, Aug 13, 2015 at 8:39 AM, Lucas Stach <l.stach@pengutronix.de> wrote:
> Hi Raj,
>
> Am Mittwoch, den 12.08.2015, 10:21 -0700 schrieb Raj Swaminathan:
>> Hi,
>>
>> The barebox documentation is a little vague on how the internal device
>> tree is actually passed to the kernel.  I was previously using this
>> environment setting to pass the kernel's devicetree to the kernel:
>> global.bootm.oftree=${PATH}/devicetree
>>
>> My understanding was taking out that line would be sufficient.
>> Unfortunately I can no longer get my kernel to boot. It stalls here:
>>
>> Loading ARM Linux zImage '/boot/linux'
>> commandline:  console=ttyS0,115200 earlyprintk  root=LABEL=root rw rootwait
>>
> Can you be more specific? What's the system/architecture you are using?
> Which version of barebox is this and which kernel version are you trying
> to start?
>
> Regards,
> Lucas
> --
> Pengutronix e.K.             | Lucas Stach                 |
> Industrial Linux Solutions   | http://www.pengutronix.de/  |
>

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

  reply	other threads:[~2015-08-13 16:59 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-12 17:21 Raj Swaminathan
2015-08-13 15:39 ` Lucas Stach
2015-08-13 16:58   ` Raj Swaminathan [this message]
2015-08-14  8:44     ` Lucas Stach
2015-08-14  8:53     ` Steffen Trumtrar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAE2nzut0jYEGFSXdH72ZYaquH+Ty_-o1N2joUuwdH+S26omrmw@mail.gmail.com \
    --to=rajshyam@gmail.com \
    --cc=barebox@lists.infradead.org \
    --cc=l.stach@pengutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox