Is it possible to have a Kernel & initrd in 1 binary?

Is it possible to have a Kernel & initrd in 1 binary?

[Dave Aubin]

Hello,
 
  I'm working on an embedded device and I want it to boot off of a USB
stick.
I'm using a utility called filo which is able to read an elf off of a
USB stick.  The
problem is filo can only read the kernel portion of the elf and not the
initrd.
  Question, is there a way to bundle both the kernel and initrd in to
just a kernel
binary?  I thought there was a way, but I've always used initrd and I'm
not familiar with
making a kernel & initrd in to one image.
  An alternative might be that the kernel be built to understand the
USB, but I've
found that there is a delay between when the kernel detects USB and when
it goes to boot off of the USB drive of about 1 second and then the
kernel fails
to load thinking the USB drive is not present.
  Any help is appreciated.
 
Thanks,
Dave

Re: Is it possible to have a Kernel & initrd in 1 binary?

[Chris Wedgwood]

On Wed, Aug 18, 2004 at 02:32:07PM -0400, Dave Aubin wrote:

> Question, is there a way to bundle both the kernel and initrd in to
> just a kernel binary?

see the initramfs stuff in linux/usr


  --cw

RE: Is it possible to have a Kernel & initrd in 1 binary?

[Dave Aubin]

Hey Chris,

  Yes, that's the stuff.  I am at a loss finding
any detailed how to's or what have you.  I'm looking 
for a little bit more.  A simple tutorial would be awesome! 
Can anyone point me as to where to find more info on
Initramfs?

Thanks again,
Dave

-----Original Message-----
From: Chris Wedgwood [mailto:cw@f00f.org] 
Sent: Wednesday, August 18, 2004 2:52 PM
To: Dave Aubin
Cc: linux-kernel@vger.kernel.org
Subject: Re: Is it possible to have a Kernel & initrd in 1 binary?

On Wed, Aug 18, 2004 at 02:32:07PM -0400, Dave Aubin wrote:

> Question, is there a way to bundle both the kernel and initrd in to 
> just a kernel binary?

see the initramfs stuff in linux/usr


  --cw

Re: Is it possible to have a Kernel & initrd in 1 binary?

[Chris Wedgwood]

On Wed, Aug 18, 2004 at 03:04:31PM -0400, Dave Aubin wrote:

> Yes, that's the stuff.  I am at a loss finding any detailed how to's
> or what have you.  I'm looking for a little bit more.  A simple
> tutorial would be awesome!  Can anyone point me as to where to find
> more info on Initramfs?

linux/Documentation/early-userspace

RE: Is it possible to have a Kernel & initrd in 1 binary?

[Dave Aubin]

Hi,

  Yes I've read that.  Do you or anyone else know
Of a good source of info for initramfs? 

-----Original Message-----
From: Chris Wedgwood [mailto:cw@f00f.org] 
Sent: Wednesday, August 18, 2004 3:19 PM
To: Dave Aubin
Cc: linux-kernel@vger.kernel.org
Subject: Re: Is it possible to have a Kernel & initrd in 1 binary?

On Wed, Aug 18, 2004 at 03:04:31PM -0400, Dave Aubin wrote:

> Yes, that's the stuff.  I am at a loss finding any detailed how to's 
> or what have you.  I'm looking for a little bit more.  A simple 
> tutorial would be awesome!  Can anyone point me as to where to find 
> more info on Initramfs?

linux/Documentation/early-userspace

Re: Is it possible to have a Kernel & initrd in 1 binary?

[Guillaume POIRIER]

Hi there,
Dave Aubin wrote:
 > Hi,
 >
 >   Yes I've read that.  Do you or anyone else know
 > Of a good source of info for initramfs?

I think that you'd like to follow this recorded conference:
http://public.www.planetmirror.com/pub/lca/2003/proceedings/papers/HPA/Abstract.html

Regards,
Guillaume