From: Peter Korsgaard <jacmet@sunsite.dk>
To: u-boot@lists.denx.de
Subject: AW: [U-Boot-Users] USB booting...
Date: Tue, 12 Jul 2005 18:39:32 +0200 [thread overview]
Message-ID: <878y0cm117.fsf@p4.48ers.dk> (raw)
In-Reply-To: <47F3F98010FF784EBEE6526EAAB078D119EC7E@tq-mailsrv.tq-net.de> (Martin Krause's message of "Thu, 7 Jul 2005 08:26:56 +0200")
>>>>> "Martin" == Martin Krause <Martin.Krause@tqs.de> 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
prev parent reply other threads:[~2005-07-12 16:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-07 6:26 AW: [U-Boot-Users] USB booting Martin Krause
2005-07-12 16:39 ` Peter Korsgaard [this message]
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=878y0cm117.fsf@p4.48ers.dk \
--to=jacmet@sunsite.dk \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox