linux-kernel - Re: linux kernel without file system

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Message-ID: <496DA678.1090701@wpkg.org>
Date:	Wed, 14 Jan 2009 09:46:48 +0100
From:	Tomasz Chmielewski <mangoo@...g.org>
To:	LKML <linux-kernel@...r.kernel.org>, phdm@...qel.be
Subject: Re: linux kernel without file system

> I need to design a very small embedded system that must only control
> one ethernet port and two serial lines and must fit in a very small flash
> memory.  So I thought about replacing the call to /etc/init by my application
> program and removing all the file-system part of linux.
> 
> Is that doable ?
> 
> Is there a 'standard' way of doing that ?
> 
> The first problem I see is accessing my serial lines.  How could I do that
> without using open("/dev/ttySx"), which requires a file system ?
> 
> Is there a way to access devices that does not require a file-system ?

You could put everything in initramfs (and embed it in the kernel).


-- 
Tomasz Chmielewski
http://wpkg.org
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