linux-mips
[Top] [All Lists]

Re: in mips how to change the start address to the new second boot load

To: "Kevin D. Kissell" <kevink@paralogos.com>
Subject: Re: in mips how to change the start address to the new second boot loader ?
From: nagalakshmi veeramallu <lucky.veeramallu@gmail.com>
Date: Tue, 21 Apr 2009 19:16:19 +0530
Cc: "M. Warner Losh" <imp@bsdimp.com>, florian@openwrt.org, linux-mips@linux-mips.org
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=ikcvw7DMPrfmiZwDLYAHggi8po7ElZSaUQpYLV0IBfM=; b=vHBOG7PIS+8g8j1VrBFuJ7IpD1LoKcbZ2kV9qR45ZiMI6Fj5r63+DKgAy6lCWtS0iD zSxV9lXIzOvDk61Bu4D7Gx1GkHOpSm008Yn4h4uzRzFu+x41vuRqVZLwA9uPO3/BtXP8 dY2lqU3fBi2I+zhxmo0ut6Tvs+fEAfb73eKfM=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=IqkUOYeIyxw8zs/SUwb8BFpYXh3lPLa1RZdWyuFq9b3AevUazkhn5viRwLuNsvGZXI H1RHKoPddyn6rtrVD7H9n6BiBCw/40W722X6tJwlOU7E3Net6VR7+U0/YLdZ7MrIQ2WN 7ozjrf3gUVcbnBk6MN2ITWDYUBOL/IGu+j6tk=
In-reply-to: <49EDC965.60507@paralogos.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <d77cedf30904142309na4355e6w63ecea63b0966c92@mail.gmail.com> <200904201100.39164.florian@openwrt.org> <20090420.085929.-1089997132.imp@bsdimp.com> <d77cedf30904202350g602c740dh26641f145677ddd5@mail.gmail.com> <49EDC965.60507@paralogos.com>
Sender: linux-mips-bounce@linux-mips.org
hi,

         --          if we set environmental variable “start” as “go new_address”, will it go directly to the new bootloader in the next power-on.

what about using system environmental "start" ,can you tell me at which context after power on environmental variables come onto picture.

Regards,
Lucky

On Tue, Apr 21, 2009 at 6:55 PM, Kevin D. Kissell <kevink@paralogos.com> wrote:
nagalakshmi veeramallu wrote:

-           Mips atlas board has jumper  which will redirect accesses from “Bootcode” range to either “Monitor flash” (0x1e000000) or the upper 4MB of “System flash” (0x1dc00000) based on jumper settings. if my kmc board have some jumper like this, can I redirect the start address.

Of course, what is really happening there is that the Atlas boot ROM has a vector at 0x1fc00000 which reads the jumper and jumps to one address or the other depending on the jumper setting. If you control what is in ROM at 0x1fc00000 and you have a software-readable jumper on your KMC board, you can do the same thing.

          Regards,

          Kevin K.


<Prev in Thread] Current Thread [Next in Thread>