Re: Raspberry Pi Serial Number

On Wed, Feb 23, 2022 at 6:52 PM Emmanuel Vadot <manu@bidouilliste.com>
wrote:

> On Wed, 23 Feb 2022 18:42:45 +0800
> Archimedes Gaviola <archimedes.gaviola@gmail.com> wrote:
>
> > On Wed, Feb 23, 2022 at 6:14 PM Peter Jeremy <peterj@freebsd.org> wrote:
> >
> > > On 2022-Feb-23 17:48:18 +0800, Archimedes Gaviola <
> > > archimedes.gaviola@gmail.com> wrote:
> > > >How to obtain the RPi serial number? I'm checking sysctl info but
> there
> > > >seems to be none with FreeBSD-13.0-RELEASE and 14.0-CURRENT or I just
> > > >missed it somewhere? In CentOS it is reflected in the /proc/cpuinfo
> such
> > > as:
> > > >
> > > >Hardware        : BCM2835
> > > >Revision        : b03112
> > > >Serial          : 10000000bc8a56a3
> > > >Model           : Raspberry Pi 4 Model B Rev 1.2
> > >
> > > I don't have a RPi4 but at least on my RPi2, the data appears to
> > > be in sysctl:
> > > hw.board.serial: 00000000d206f16c
> > > hw.board.revision: 10620993
> > > hw.platform: bcm2836
> > >
> >
> > Thanks Peter, I'm wondering why there's no such output in sysctl with
> RPi4?
> >
> > Archimedes
>
>  Because those sysctls are only added on armv7 if u-boot passed some
> linux boot argument, see
> https://cgit.freebsd.org/src/tree/sys/arm/arm/machdep_boot.c#n91
>
>  The proper way to handle those is to add them under hw.fdt like I did
> for model and compatible property in
>
> https://cgit.freebsd.org/src/commit/?id=50e0dc0c4b46ee62b898ce2d92e52be4f77383d9
>  but I don't think that those are standard properties.
>
> --
> Emmanuel Vadot <manu@bidouilliste.com> <manu@freebsd.org>
>

Oh I see, that explains thanks Emmanuel! It's alright just stick to the
standard properties because in my case as long as I can obtain the serial
number in any other way like the ofwdump tool I'm already satisfied. For
some reason, I need the serial number for system identification.

Thanks,
Archimedes