From: Wolfgang Denk <wd@denx.de>
To: sruel@oerlikon.ca
Cc: Scott Anderson <scott_anderson@mvista.com>,
linuxppc-embedded <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: RPX-CLLF & Flash root filesystem
Date: Wed, 24 Oct 2001 00:55:05 +0200 [thread overview]
Message-ID: <20011023225510.6AE3510CD6@denx.denx.de> (raw)
In-Reply-To: Your message of "Tue, 23 Oct 2001 17:50:37 EDT." <3BD5E62D.8000807@oerlikon.ca>
In message <3BD5E62D.8000807@oerlikon.ca> you wrote:
>
> initrd.txt is only part of the answer. I'm missing info on how to tell
> Linux where to fetch the root filesystem.
This depends on how you load and boot Linux.
> Once a minimal/functional root filesystem has been created (and
> compressed), you have to put it somewhere in the Flash memory (just like
> the Linux image).
When using the "standard" bootloader method, you will run
make zImage.initrd
which builds a binary image that contrains the bootloader, the
compressed Linux kernel image, and the (compressed) ramdisk image as
one file, "zImage.initrd".
With PPCBoot, you can build your kernel and ramdisk images separately
or optionally combine them as one file.
> When the system boots, it needs to "see" this root filesystem that is
> inside the flash.
The bootloader takes care of passing the correct arguments to the
Linux kernel.
With PPCBoot you pass the addresses of both images as arguments to
the "bootm" command.
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
To the systems programmer, users and applications serve only to
provide a test load.
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-10-23 22:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-23 19:10 RPX-CLLF & Flash root filesystem Sebastien Ruel
[not found] ` <3BD5D6F6.1C103CBE@mvista.com>
2001-10-23 21:50 ` Sebastien Ruel
2001-10-23 22:55 ` Wolfgang Denk [this message]
2001-10-24 6:27 ` Jim Thompson
2001-10-24 7:00 ` Wolfgang Denk
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