From: "Mark A. Greer" <mgreer@mvista.com>
To: happa@wmlab.csie.ncu.edu.tw
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: About MMU setting in MPC8245
Date: Wed, 11 Jan 2006 09:07:09 -0700 [thread overview]
Message-ID: <20060111160709.GA6405@mag.az.mvista.com> (raw)
In-Reply-To: <20060111102618.0F9251100F2@wmlab.csie.ncu.edu.tw>
On Wed, Jan 11, 2006 at 06:26:18PM +0800, happa@wmlab.csie.ncu.edu.tw wrote:
> Hi,
> Sorry, I have very basic question about PPC MMU setting.
>
> In "http://www.denx.de/wiki/PPCEmbedded/Kernel#BOOTLOADER",
> chapter 10.2. Memory Map, I get the following information.
>
> "The bootloader is responsible for configuring the memory map before jumping to the Linux kernel."
>
> Is anyone know what memory map should be done in bootloader?
Are you in PCI host mode? If so, the first sentence of chapter 3--
Address Maps of the 8245 manual states:
"The MPC8245 in PCI host mode supports an address mapping
configuration that is designated as address map B."
Map B == CHRP mapping.
> If I'm using ICE to load linux kernel, what kind of CPU registers need be configured first?
> Is IBAT/DBAT and Segment register need be set?
Why don't you just use U-boot or look at the U-Boot code to see how its
done?
Mark
next prev parent reply other threads:[~2006-01-11 16:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-11 10:26 About MMU setting in MPC8245 happa
2006-01-11 16:07 ` Mark A. Greer [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-01-12 6:45 happa
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