From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Korsgaard Date: Tue, 12 Jul 2005 18:39:32 +0200 Subject: AW: [U-Boot-Users] USB booting... In-Reply-To: <47F3F98010FF784EBEE6526EAAB078D119EC7E@tq-mailsrv.tq-net.de> (Martin Krause's message of "Thu, 7 Jul 2005 08:26:56 +0200") References: <47F3F98010FF784EBEE6526EAAB078D119EC7E@tq-mailsrv.tq-net.de> Message-ID: <878y0cm117.fsf@p4.48ers.dk> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de >>>>> "Martin" == Martin Krause writes: Martin> I tried this with a read-only ext2 root file system on a Martin> linux partition on an USB memory stick some time ago - and Martin> failed. I hadn't much time to analyze what's going wrong but Martin> I think the problem was that the kernel (linuxppc_2_4_devel Martin> from denx) tried to mount the root file system _before_ Martin> initializing of the usb sub system has completed. At least Martin> the console messages looked so - but perhaps I missed Martin> something. Martin> Has anybody else tried this? I would be happy to hear about a Martin> successful way to do this. Yes, there's a race condition between the kernel mounting the rootfs and USB detection / partition scan - I have solved it with a small initrd (~100k) which sits in a loop trying to mount the USB stick and then does a pivot_root to it. -- Bye, Peter Korsgaard