linux-kernel - Re: [PATCH 2.6.21] cramfs: add cramfs Linear XIP

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Date:	Thu, 24 May 2007 13:52:19 -0700
From:	Richard Griffiths <richard.griffiths@...driver.com>
To:	Jared Hulbert <jaredeh@...il.com>
Cc:	Linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.21] cramfs: add cramfs Linear XIP

On Thu, 2007-05-24 at 13:22 -0700, Jared Hulbert wrote:
> On 5/22/07, Richard Griffiths <res07ml0@...izon.net> wrote:
> > Venerable cramfs fs Linear XIP patch originally from MontaVista, used in
> > the embedded Linux community for years, updated for 2.6.21. Tested on
> > several systems with NOR Flash. PXA270, TI OMAP2430, ARM Versatile and
> > Freescale iMX31ADS.
> >
> 
> When trying to verify this patch on our PXA270 system we get the
> following error when running an XIP rootfs:
> 
> cramfs: checking physical address 0xa00000 for linear cramfs image
> cramfs: linear cramfs image appears to be 3236 KB in size
> VFS: Mounted root (cramfs filesystem) readonly.
> Freeing init memory: 96K
> /sbin/init: error while loading shared libraries: libgcc_s.so.1:
> failed to map segment from shared object: Error 11
> Kernel panic - not syncing: Attempted to kill init!
> 
> However, if our busybox binary is XIP while the libgcc_s.so.1 is not
> XIP, busybox runs fine.

> Richard, May I email you the rootfs tarball so you can recreate what
> we are seeing?  It is a little less than 2MiB.  The filing system
> executables will only run on a PXA27x processor.
Yes you can, but I won't have access to a PXA270 for a few weeks. I
assume you don't see the issue if you static link busybox? BTW I'm using
uclibc rather than glibc - much smaller fs.

Richard
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