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From: Thomas Kunze <thommycheck@gmx.de>
To: openembedded-devel@lists.openembedded.org
Subject: arm kexec commandline support
Date: Fri, 08 Jun 2007 02:02:29 +0200	[thread overview]
Message-ID: <46689C95.6010209@gmx.de> (raw)

Hi all,

I have written a quick hack to support custom commandlines for arm with 
kexec. You need:

http://www2.informatik.hu-berlin.de/~tkunze/zaurus/patches/kexec_commandline-3.patch

and:

http://www2.informatik.hu-berlin.de/~tkunze/zaurus/patches/atag_support.patch

(from lak)


How to use:
Use kexec as usual. To change the commandline do:
echo "your commandline" > /sys/kernel/kexec_cmdline

This sets up a ataglist in memory which is copied to 0xc0000100 when 
machine is rebooted.
This address is given the new kernel as ataglist in r2.

This works on collie, but should work on any arm machine. I didn't find 
out why I can't give an arbitrary address to the new kernel in r2 but it 
doesn't work (machine hangs.)

Comments are welcome.

Thomas



             reply	other threads:[~2007-06-08  0:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-08  0:02 Thomas Kunze [this message]
2007-06-11 14:58 ` arm kexec commandline support Hans Henry von Tresckow
  -- strict thread matches above, loose matches on Subject: below --
2007-09-27 16:20 Bob Dunlop
2007-09-27 17:08 ` Mike (mwester)
2007-09-27 17:53   ` Hans Henry von Tresckow

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