Re: [PATCH] reinstate mac rtc

["Kolbjørn Barmen" <linux-m68k@kolla.no>]

On Sat, 18 Oct 2008, Riccardo wrote:

> I don't know "how", but with 2.2 kernels I always had a correct date at
> boot without any tricks. It is true though that with high CPU load we
> had clockskew and that we didn't save back the date and hourtime to the
> clock, thus any clock setting needed to be done from the mac side. A
> compromoise, but better than the current situation.

The clockproblem is something I stumble upon every now and then on
various machinees - I really wish there was a kernel parameter where one
could set a date string, then the bootloader could pass it on.

Currently i use a /.timestamp file that I read from init=/sbin/init.noclock;

---
firda ~ # cat  /sbin/init.noclock
#! /bin/bash
if test $(/bin/date +%Y) -lt 2008 ; then
        /bin/date -s "1970-01-01 + $(($(/bin/stat -c %X /.timestamp) +3600)) seconds"
fi
exec /sbin/init
---

I make sure the .timestamp is touched regularly and on shutdown.


This trick I now use on quadra910, an old acer laptop, gumstix ... :P

-- kolla