From: Brad Arnold <brad@check-it.ca>
To: Nicolas Pitre <nico@fluxnic.net>
Cc: linux-embedded@vger.kernel.org
Subject: Re: Expose system Serial Number to userspace.
Date: Wed, 29 Aug 2012 14:47:02 -0600 [thread overview]
Message-ID: <CADoavCcgYy_PrGkiO3rGZNvg6C1uKFQtqHffR=BviPKiWjdgvQ@mail.gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.02.1208291143101.1784@xanadu.home>
On Wed, Aug 29, 2012 at 9:50 AM, Nicolas Pitre <nico@fluxnic.net> wrote:
>
> 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
Actually, I guess even better than initializing through the two
variables is to pass the serial directly from u-boot using the tag.
Brad
next prev parent reply other threads:[~2012-08-29 20:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-29 15:18 Expose system Serial Number to userspace Brad Arnold
2012-08-29 15:50 ` Nicolas Pitre
2012-08-29 16:53 ` Brad Arnold
2012-08-29 20:47 ` Brad Arnold [this message]
2012-08-29 20:52 ` Nicolas Pitre
2012-08-29 16:05 ` Marco Stornelli
2012-08-29 16:57 ` Brad Arnold
2012-08-29 17:07 ` Marco Stornelli
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