From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Pitre <nico@fluxnic.net>
Subject: Re: Expose system Serial Number to userspace.
Date: Wed, 29 Aug 2012 11:50:43 -0400 (EDT)
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To: Brad Arnold <brad@check-it.ca>
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On Wed, 29 Aug 2012, Brad Arnold wrote:

> Hi,
> 
> I'm working on an embedded board which uses u-boot + linux. At
> manufacturing time, the device serial number will be programmed into OTP
> memory on NAND (probably from within u-boot). We'd like the linux kernel
> to make this serial number available to be read from userspace. Is there
> an accepted method to do this sort of thing?

A serial number field is available from /proc/cpuinfo already.  you just 
have to initialize it through the system_serial_high and 
system_serial_low global variables.


Nicolas