options i2c-bcm2708­baudrate=­400000


i2c-dev


sudo update-rc.d fake-hwclock remove


sudo update-rc.d hwclock remove


$ patch < hwclock.sh.patch


$ sudo update-rc.d hwclock defaults
$ sudo update-rc.d raspi-rtc-power defaults


gcc rtc-power.c -o rtc-power

sudo chown root:root rtc-power


sudo halt