From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rob Taylor" To: "linuxppc-embedded" Subject: RE: kernel executing from flash Date: Fri, 24 Mar 2000 09:54:18 -0000 Message-ID: <000501bf9576$ebd7ef20$b400a8c0@eventhorizon> MIME-Version: 1.0 Content-Type: text/plain;charset="iso-8859-1" In-Reply-To: <200003232005.VAA05535@denx.local.net> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: > 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. > not to mention that DRAM is usually faster than FLASH... Rob ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/