From: Wolfgang Denk <wd@denx.de>
To: Fabien Oriede <fabien.oriede@yahoo.fr>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: suffisant space for U-Boot, Linux and an initrd image ? (4MB SDRAM)
Date: Tue, 05 Aug 2008 00:59:57 +0200 [thread overview]
Message-ID: <20080804225958.0827524848@gemini.denx.de> (raw)
In-Reply-To: Your message of "Mon, 04 Aug 2008 12:54:00 -0000." <789365.58211.qm@web27401.mail.ukl.yahoo.com>
In message <789365.58211.qm@web27401.mail.ukl.yahoo.com> you wrote:
>
> I would like to know if this is possible to port U-Boot, Linux and an initrd image on a board with 4MB of SDRAM ?
In Theory it may be possible, but just for very tiny demo
applications. Probably not for a useful device.
> When Linux try to boot, there is this line on the terminal :
> "Memory : 2036k available (1036k kernel code, 256k data, 80k init, 0k highmem)"
> So I have 2036k memory available for my initrd image but I don't know if this is suffisant.
Note that a ramdisk is NOT an efficient way to use memory. See fro
example http://www.denx.de/wiki/view/DULG/RootFileSystemSelection
which shows that for example a cramfs image is not only faster to boot
but also needs less RAM.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
Keep your head and your heart going in the right direction and you
will not have to worry about your feet.
prev parent reply other threads:[~2008-08-04 23:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-04 12:54 suffisant space for U-Boot, Linux and an initrd image ? (4MB SDRAM) Fabien Oriede
2008-08-04 13:43 ` Marco Stornelli
2008-08-04 22:59 ` Wolfgang Denk [this message]
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