Linuxbios with Diskonchip?

Devi Priya ijpriya at hotmail.com
Thu Nov 27 20:21:01 CET 2003


Hi,

      I am using Diskonchip millennium with boot capability. I just want to 
know if diskonchip is mapped to the high order physical address (at reset) 
and is any remapping is done later?


>From: "gizara" <gizara at cox.net>
>To: "Devi Priya" <ijpriya at hotmail.com>, <linuxbios at clustermatic.org>
>Subject: Re: Linuxbios with Diskonchip?
>Date: Thu, 27 Nov 2003 13:54:13 -0800
>
>
>If I remember correctly, Disk-on-Chip comprises NAND flash technology which
>inherently cannot execute in place, strictly sequential (data) accesses...
>So you would still need some sort of rudimentary boot flash(NOR) or other
>ROM to execute code to first load the BIOS, then the kernal, into shadow,
>then main (DRAM) memory locations, respectively.
>
>In a system I'm architecting we're still going to use a 256Kx8 flash for
>LinuxBIOS, from there use JFFS2 and associated utilities to get the kernal
>and various applications and data from a bare NAND on board.
>
>This link and its links go into much more detail than I can in this email
>about issues you may face:
>
>http://www.linux-mtd.infradead.org/tech/nand.html
>
>Good Luck!
>
>
>----- Original Message -----
>From: "Devi Priya" <ijpriya at hotmail.com>
>To: <linuxbios at clustermatic.org>
>Sent: Wednesday, November 26, 2003 10:47 PM
>Subject: Linuxbios with Diskonchip?
>
>
> > Hi,
> >
> > I shall have my BIOS program, Linux kernel and filesystem in the same
> > Diskonchip. I want to use linuxbios (for sc1200).  What is the physical
> > memory mapping that should be done? SDRAM mapped to lower order address
>and
> > Diskonchip to the higher order address. Is it correct?
> >
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