From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Frysinger Date: Mon, 27 Apr 2009 11:56:17 -0400 Subject: [U-Boot] [PATCH 3/3] smc911x: do net reset the chip if no EEPROM is connected In-Reply-To: <20090427144416.GE10969@buzzloop.caiaq.de> References: <1239189819-26805-1-git-send-email-daniel@caiaq.de> <200904262314.12901.vapier@gentoo.org> <20090427144416.GE10969@buzzloop.caiaq.de> Message-ID: <200904271156.18226.vapier@gentoo.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Monday 27 April 2009 10:44:16 Daniel Mack wrote: > On Sun, Apr 26, 2009 at 11:14:06PM -0400, Mike Frysinger wrote: > > On Tuesday 21 April 2009 07:13:10 Daniel Mack wrote: > > > On Wed, Apr 08, 2009 at 11:57:37PM -0400, Mike Frysinger wrote: > > > > > Not if the MAC is stored in the volatile smc911x registers. Issuing > > > > > a soft reset flushes these values - if U-Boot does that, the OS has > > > > > no change getting them. > > > > > > > > then either your u-boot or your OS is misconfigured and you need to > > > > fix that. as clearly stated in docs/README.enetaddr, the environment > > > > is the place where mac addresses live when there is no dedicated > > > > storage (like an eeprom). > > > > > > > > ignoring that, the mac address doesnt magically get programmed. if > > > > no network operation was initiated, then the part wouldnt have been > > > > programmed anyways, so you're still left with an OS that cant get > > > > itself functional. > > > > > > Ok, true. Thanks for pointing this out. > > > > usually what i suggest to people are things like: > > - pass $(ethaddr) via kernel command line and parse /proc/cmdline > > - use the u-boot tools to read the u-boot env directly > > - set the hw address with `ifconfig` or similar tool > > ... which doesn't help much when it's about booting from NFS root. it works fine if you use an initramfs like everyone suggests -mike -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 836 bytes Desc: This is a digitally signed message part. Url : http://lists.denx.de/pipermail/u-boot/attachments/20090427/75391343/attachment.pgp