Using JFFS2 as root FS on CF

Using JFFS2 as root FS on CF

[Michael Rothwell]

I'm going fishing.

I have a 16MB compact flash card divided into two partitions, /dev/hda1
and /dev/hda2. I formatted hda1 with ext2 to serve as /boot. hda2
contains a JFFS2 image and will be / ... once I get it to mount.

I've got jffs2, mtdblock and blkmtd compiled into the kernel.

Does someone have a recipe for booting a kernel (2.4.13 or 2.4.16) with
this type of setup and having it mount the jffs2 fs as /?


-M

Re: Using JFFS2 as root FS on CF

[Michael Rothwell]

On Tue, 2001-11-27 at 22:42, Michael Rothwell wrote:
> Does someone have a recipe for booting a kernel (2.4.13 or 2.4.16) with
> this type of setup and having it mount the jffs2 fs as /?


Addendum: blkmtd complains "error, missing 'device' name" -- I'm passing
it in via lilo, but it looks like blkmtd doesn't read kernel arguments.

-M

Re: Using JFFS2 as root FS on CF

[Si]

Michael,

the latest blkmtd in CVS should fix the problem when compiled into the
kernel. you can then pass the kernel boot param
blkmtd_device=/dev/foo

Note, this version isnt yet it the latest kernel sources, but you should
just be able to get the one out of CVS and copy it
over the blkmtd.c in the kernel source tree.

I will hopefully send a patch off to the 2.4 maintainer later this week, I
didnt bother earlier as I assumed with the 2.4/2.5 change over,  Linus and
Marcelo probably had more important bug fixes etc to deal with.

cheers
si
----- Original Message -----
From: "Michael Rothwell" <rothwell@holly-springs.nc.us>
To: "Michael Rothwell" <rothwell@holly-springs.nc.us>
Cc: <linux-mtd@lists.infradead.org>
Sent: Wednesday, November 28, 2001 4:21 AM
Subject: Re: Using JFFS2 as root FS on CF


> On Tue, 2001-11-27 at 22:42, Michael Rothwell wrote:
> > Does someone have a recipe for booting a kernel (2.4.13 or 2.4.16) with
> > this type of setup and having it mount the jffs2 fs as /?
>
>
> Addendum: blkmtd complains "error, missing 'device' name" -- I'm passing
> it in via lilo, but it looks like blkmtd doesn't read kernel arguments.
>
> -M
>
>
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