[uClinux-dev] 5272-based USB boot device

David Miller davidm at midstream.com
Thu Mar 20 16:45:12 EST 2003

I've looked at that driver, but it doesn't appear implement a "Mass Storage
Class" device.  What I need is a way to connect the 5272 to a PC and have it
recognized as a bootable Mass Storage device.  It could either use a
dedicated portion of Flash or export part or all of a JFFS2 filesystem.

-----Original Message-----
From: Vladimir Vorobyov [mailto:vladimir.vorobyov at iss.org.ua]
Sent: Thursday, March 20, 2003 1:40 AM
To: uclinux-dev at uclinux.org
Subject: Re: [uClinux-dev] 5272-based USB boot device

I don't exactly understand what do you want, but
as I know Motorola has the USB device driver for uClinux as well as for the
standalone version on their web site (www.mot.com).
I hope this helps.


----- Original Message -----
From: David Miller
To: uCLinux Dev List (E-mail)
Sent: Wednesday, March 19, 2003 8:11 PM
Subject: [uClinux-dev] 5272-based USB boot device

I have an application where I am considering a ColdFire 5272 as a system
control processor.  It is going to have a big chunk of data Flash
(16-64MBytes) connected to it for FPGA loading.  We also have a USB
connection to our host CPU (dual Xeon running FreeBSD) and we would like to
be able to use a chunk of the Flash for a boot loader.

The questions I have are:
1. How hard is it going to be to implement a Bootable USB Device with a
5272?  Has anyone done it?
2. How much external RAM and Program Flash do I need?
3. Is there a better processor for the job?


David L. Miller
DavidM at MidStream.com
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