From: Wolfgang Denk <wd@denx.de>
To: christof <xfr@freenet.de>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: kernel executing from flash
Date: Thu, 23 Mar 2000 21:05:40 +0100 [thread overview]
Message-ID: <200003232005.VAA05535@denx.local.net> (raw)
In-Reply-To: Your message of "Thu, 23 Mar 2000 16:14:30 +0100." <1314024740.953824470340.JavaMail.wwwrun@moe.freenet.de>
In message <1314024740.953824470340.JavaMail.wwwrun@moe.freenet.de> you wrote:
>
> all Linux I know will be copied during startup from Harddisk, NFS or Flash to RAM and will be executed there.
> Is there a possibility for smaller systems to run the
> kernel directly from flash memory as other embedded os's do? Did somebody try this or is it totaly impossible?
It may be possible, but usually it does not make much sense - to run
the kernel directly from FLASH you must store an uncompressed kernel
image there, so you need more FLASH. Given the price difference
between FLASH and DRAM memory is often cheaper to uncompress into
RAM, and run from RAM.
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
The only person who always got his work done by Friday
was Robinson Crusoe.
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2000-03-23 20:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-03-23 15:14 kernel executing from flash christof
2000-03-23 16:33 ` Markus Sundberg
2000-03-23 20:05 ` Wolfgang Denk [this message]
2000-03-24 9:54 ` Rob Taylor
2000-03-28 10:30 ` christof
2000-03-28 11:40 ` Wolfgang Denk
[not found] <200003241749.MAA00739@misery.wavemark.com>
2000-03-27 8:54 ` Rob Taylor
2000-03-28 0:04 ` Graham Stoney
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