From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Arnold Subject: RE: Expose system Serial Number to userspace. Date: Wed, 29 Aug 2012 10:53:23 -0600 Message-ID: References: <09ee18b0d2e3d7f34a9e510b3f8d7702@mail.gmail.com> Mime-Version: 1.0 Return-path: In-Reply-To: Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Nicolas Pitre Cc: linux-embedded@vger.kernel.org That's perfect, thanks! Brad -----Original Message----- From: Nicolas Pitre [mailto:nico@fluxnic.net] Sent: August-29-12 9:51 AM To: Brad Arnold Cc: linux-embedded@vger.kernel.org Subject: Re: Expose system Serial Number to userspace. 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