Subject: RE: kernel executing from flash

From: "Rob Taylor" <[email-masked]>
Date: Fri, 24 Mar 2000 09:54:18 -0000

> In message
> <[email-masked]> 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

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