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
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