Compiling MTD in the kernel

Compiling MTD in the kernel

[Sébastien Côté]

Hi,

I just tried to compile MTD in the kernel (not as a module) btu, even if
everything compiles fine, it doesn't work.  If I try to cat a jffs image
in /dev/mtd0 (I use mtdram), I get:

bash: /dev/mtd0: No such device.

If I try to mount a partition using jffs (even though this partition
isn't jffs), I get:
mount: fs type jffs not supported by kernel

It's the same errors I would get If I had compiled everything as modules
but didn't load them.

Any clue?

-- 
Sébastien Côté


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Re: Compiling MTD in the kernel

[David Woodhouse]

scote1@Matrox.COM said:
>  It's the same errors I would get If I had compiled everything as
> modules but didn't load them.

2.2 kernel, I assume. Did you apply the mtd-patch-2.2.16 from the patches/ 
directory? It puts all the calls to the init routines in the right place.

I assume you did enable CONFIG_MTDCHAR and CONFIG_JFFS_FS :)

--
dwmw2




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RE: Compiling MTD in the kernel

[mark.langsdorf]

> If I try to mount a partition using jffs (even though this partition
> isn't jffs), I get: mount: fs type jffs not supported by kernel

	Are you using the 2.2.16 patch of the 2000/07/04 build?  I am
having a similar problem, and it looks like the patch does not set up
the make files properly to handle the jffs stuff.  At least, the jffs
is not an option with 'make menuconfig' even though the other MTD 
stuff is.
 
> It's the same errors I would get If I had compiled everything 
> as modules but didn't load them.

-Mark Langsdorf


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Re: Compiling MTD in the kernel

[Nick Ivanter]

You probably did not patch init/main.c and fs/filesystems.c to call
init_mtd() and init_jffs_fs() correspondingly.


Nick.

SИbastien CТtИ wrote:

> Hi,
>
> I just tried to compile MTD in the kernel (not as a module) btu, even if
> everything compiles fine, it doesn't work.  If I try to cat a jffs image
> in /dev/mtd0 (I use mtdram), I get:
>
> bash: /dev/mtd0: No such device.
>
> If I try to mount a partition using jffs (even though this partition
> isn't jffs), I get:
> mount: fs type jffs not supported by kernel
>
> It's the same errors I would get If I had compiled everything as modules
> but didn't load them.
>
> Any clue?
>
> --
> SИbastien CТtИ
>
> To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org



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Re: Compiling MTD in the kernel

[Sébastien Côté]

mark.langsdorf@amd.com wrote:
> 
> > If I try to mount a partition using jffs (even though this partition
> > isn't jffs), I get: mount: fs type jffs not supported by kernel
> 
>         Are you using the 2.2.16 patch of the 2000/07/04 build?  I am
> having a similar problem, and it looks like the patch does not set up
> the make files properly to handle the jffs stuff.  At least, the jffs
> is not an option with 'make menuconfig' even though the other MTD
> stuff is.

That patch worked fine for me, at least with xconfig.  It's located at
the bottom of the filesystem submenu and it's marked experimental so you
have to enable the option "Prompt for development and/or incomplete
code/drivers".  Maybe that's why you don't see it with menuconfig.
-- 
Sébastien Côté


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Re: Compiling MTD in the kernel

[David Woodhouse]

nick@auriga.ru said:
> You probably did not patch init/main.c and fs/filesystems.c to call
> init_mtd() and init_jffs_fs() correspondingly.

Should be there.

passion /home/dwmw2/working/mtd/patches $ diffstat mtd-patch-2.2.16 
 Makefile               |    5 +++++
 arch/alpha/config.in   |    2 ++
 arch/arm/config.in     |    2 ++
 arch/i386/config.in    |    2 ++
 arch/m68k/config.in    |    2 ++
 arch/mips/config.in    |    2 ++
 arch/ppc/config.in     |    2 +-
 arch/s390/config.in    |    3 +++
 arch/sparc/config.in   |    2 ++
 arch/sparc64/config.in |    1 +
 drivers/Makefile       |   11 ++++++++++-
 fs/Config.in           |    1 +
 fs/Makefile            |   10 +++++++++-
 fs/filesystems.c       |    8 ++++++++
 include/linux/module.h |    1 +
 init/main.c            |    7 ++++++-
 kernel/ksyms.c         |    1 +
 kernel/module.c        |   21 ++++++++++++++++++++-


--
dwmw2




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Re: Compiling MTD in the kernel

[David Woodhouse]

mark.langsdorf@amd.com said:
> 	Are you using the 2.2.16 patch of the 2000/07/04 build?  I am having
> a similar problem, and it looks like the patch does not set up the
> make files properly to handle the jffs stuff.  At least, the jffs is
> not an option with 'make menuconfig' even though the other MTD  stuff
> is.

Strange. It should be.

--- fs/Config.in        2000/06/07 10:00:29     1.5
+++ fs/Config.in        2000/06/26 07:30:01
@@ -59,6 +59,7 @@
   if [ "$CONFIG_EFS_FS" != "n" ]; then
     define_bool CONFIG_SGI_PARTITION y
   fi
+  tristate 'Journalling Flash filesystem (JFFS) support (experimental)' CONFIG_JFFS_FS
 fi
 
 if [ "$CONFIG_NET" = "y" ]; then


--
dwmw2




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