From: Steven Scholz <steven.scholz@imc-berlin.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Can the CPU load from flash without configuring it first?
Date: Tue, 23 Nov 2004 15:46:23 +0100 [thread overview]
Message-ID: <41A34D3F.70106@imc-berlin.de> (raw)
In-Reply-To: <41A34BE4.1050305@web.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
next prev parent reply other threads:[~2004-11-23 14:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-22 13:52 [U-Boot-Users] start.S code snippet doubt Nishant Galange
2004-11-22 16:52 ` Wolfgang Denk
2004-11-23 14:40 ` [U-Boot-Users] Can the CPU load from flash without configuring it first? Peter Asemann
2004-11-23 14:46 ` Steven Scholz [this message]
2004-11-23 15:46 ` Wolfgang Denk
2004-11-23 9:58 ` [U-Boot-Users] start.S code snippet doubt Yuli Barcohen
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