From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] access u-boot environment variables from kernel space
Date: Tue, 4 Dec 2012 10:26:54 -0600 [thread overview]
Message-ID: <1354638414.16710.1@snotra> (raw)
In-Reply-To: <CAGm1_kuScPNR-cg_dMVqctxmmchQjHUCY15Pj2Q5B+1rQT_gCA@mail.gmail.com> (from yegorslists@googlemail.com on Tue Dec 4 07:24:51 2012)
On 12/04/2012 07:24:51 AM, Yegor Yefremov wrote:
> On Tue, Dec 4, 2012 at 1:04 PM, Manukumar
> <manukumar@signal-networks.com> wrote:
> > Dear All,
> >
> > How to access u-boot environment variables from kernel space or user
> > space in P1012 processor.
> >
> > The variables required to be accessed from uboot environment section
> > are:
> >
> > eth1addr
>
> You can get the MAC address from related registers of your Ethernet
> controller, provided they where set by u-boot. This is way the network
> driver goes.
No, you get that from the device tree. You cannot rely on U-Boot to
have initialized the network hardware, or on the network hardware to
not have been reset since then.
-Scott
next prev parent reply other threads:[~2012-12-04 16:26 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1337677828.2382.30.camel@Manukumar>
2012-05-22 14:15 ` [U-Boot] Nand flash R/W,saveenv issue Marek Vasut
2012-05-22 17:56 ` Scott Wood
2012-05-23 5:56 ` Manukumar
2012-05-23 8:02 ` Wolfgang Denk
2012-05-23 8:30 ` Manukumar
2012-05-23 16:16 ` Scott Wood
2012-05-30 5:02 ` [U-Boot] problem while making kernel up Manukumar
2012-05-30 16:18 ` Scott Wood
2012-05-31 4:15 ` Manukumar
2012-05-31 16:21 ` Scott Wood
2012-06-01 3:58 ` Manukumar
2012-06-01 10:10 ` Manukumar
2012-06-01 17:15 ` Scott Wood
2012-06-06 8:13 ` Manukumar
2012-07-05 10:27 ` [U-Boot] USB detection Manukumar
2012-07-05 11:45 ` Albert ARIBAUD
2012-07-05 15:34 ` Marek Vasut
2012-07-09 8:47 ` Manukumar
2012-07-09 12:18 ` Albert ARIBAUD
2012-07-10 2:17 ` Marek Vasut
2012-07-12 6:10 ` Manukumar
2012-10-25 12:21 ` Manukumar
2012-10-25 13:26 ` RgC
2012-09-26 10:42 ` [U-Boot] bootm command in U-boot Manukumar
2012-09-26 14:14 ` Wolfgang Denk
2012-10-03 12:24 ` [U-Boot] Booting through nand flash with other address Manukumar
2012-10-03 15:22 ` Scott Wood
2012-10-04 10:18 ` Manukumar
2012-10-04 17:21 ` Scott Wood
2012-12-04 12:04 ` [U-Boot] access u-boot environment variables from kernel space Manukumar
2012-12-04 13:24 ` Yegor Yefremov
2012-12-04 16:26 ` Scott Wood [this message]
2012-12-04 16:35 ` Steve Strobel
2013-01-25 6:50 ` Manukumar
2013-01-25 9:22 ` Wolfgang Denk
2012-11-23 4:08 ` [U-Boot] Quer on JTAG Manukumar
2012-11-23 5:33 ` Wolfgang Denk
2012-09-11 12:47 ` [U-Boot] Nand Flash Programing and Board Bring Up Manukumar
2012-09-11 14:10 ` Marek Vasut
2012-05-23 22:45 ` [U-Boot] Nand flash R/W,saveenv issue Scott Wood
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=1354638414.16710.1@snotra \
--to=scottwood@freescale.com \
--cc=u-boot@lists.denx.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.