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From: Brad Arnold <brad@check-it.ca>
To: linux-embedded@vger.kernel.org
Subject: Expose system Serial Number to userspace.
Date: Wed, 29 Aug 2012 09:18:32 -0600	[thread overview]
Message-ID: <09ee18b0d2e3d7f34a9e510b3f8d7702@mail.gmail.com> (raw)

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?

One idea I had was to make the serial number available as a device node
(ie: you can simply read the serial number from "/dev/serialnumber"). Then
there's the question of how the kernel learns the serial in the first
place (a kernel boot command like parameter passed from u-boot?).

Does this sound sane, or is there a better way to do something like this?

Thanks,

Brad

next             reply	other threads:[~2012-08-29 15:18 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-29 15:18 Brad Arnold [this message]
2012-08-29 15:50 ` Expose system Serial Number to userspace Nicolas Pitre
2012-08-29 16:53   ` Brad Arnold
2012-08-29 20:47   ` Brad Arnold
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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