From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steven Scholz <steven.scholz@imc-berlin.de>
Date: Tue, 23 Nov 2004 15:46:23 +0100
Subject: [U-Boot-Users] Can the CPU load from flash without configuring
 it first?
In-Reply-To: <41A34BE4.1050305@web.de>
References: <20041122165215.1BE3BC1430@atlas.denx.de> <41A34BE4.1050305@web.de>
Message-ID: <41A34D3F.70106@imc-berlin.de>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Peter Asemann wrote:

> Well, I think it *must* be that way, but to be sure I ask this probably 
> question, though:
> 
> If a MPC875 starts, it will try to boot from the device selected by 
> chip-select 0 (CS0), unless otherwise stated in the hard reset 
> configuration word.
> It will then try to access a flash/eprom/something device via the "GPCM" 
> memory controller.
> In order for this to work, the GPCM of the CPU must be possible to 
> access a flash/eprom without prior configuration when booting.

How else could it boot otherwise? ;-)

Have a look at the power up default values of the GPCM config registers.
You will see that their (most probably) set to meet the requirements for 
standard flash devices...

--
Steven