Description
On a fast-reboot enabled system if OCC's are disabled, then next reboot is not making up disabled OCC's
Disable OCC's by doing occ reset for more than 3 times
[root@localhost ~]# opal-prd occ reset
[root@localhost ~]# opal-prd occ reset
[root@localhost ~]# opal-prd occ reset
[root@localhost ~]# opal-prd occ reset
[root@localhost ~]# opal-prd occ reset
=feeling-luckyt ~]# nvram -p ibm,skiboot --update-config experimental-fast-reset
[root@localhost ~]# reboot
[ OK ] Started Show Plymouth Reboot Screen.
[root@localhost ~]# dmesg | grep -i powernv
[ 0.000000] Using PowerNV machine description
[ 0.750966] EEH: PowerNV platform initialized
[ 4.971226] powernv-rng: Registering arch random hook.
[ 6.938154] powernv-cpufreq: cpufreq pstate min -43 nominal -17 max 0
[ 6.954201] powernv-cpufreq: Pstate set to safe frequency
[ 6.968361] powernv-cpufreq: Frequency Control disabled from OS
[ 6.986228] powernv-cpufreq: PMSR = d5d5807fc8000000
[ 7.003352] powernv-cpufreq: CPU Frequency could be throttled
[ 7.135968] powernv_idle_driver registered
[ 7.136065] nx_compress_powernv: coprocessor found on chip 0, CT 3 CI 1
[ 19.451572] powernv_rng: Registered powernv hwrng.
[ 19.476582] ipmi-powernv ibm,opal:ipmi: Found new BMC (man_id: 0x000000, prod_id: 0x0000, dev_id: 0x00)
[root@localhost ~]# ipmitool sdr elist | grep -i occ
OCC Active | 08h | ok | 210.0 | Device Disabled
After fast-reboot, still OCC's are disabled that means there is no power management, user need to do a full IPL