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init.bullhead.power.sh
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init.bullhead.power.sh
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#!/system/bin/sh
################################################################################
# helper functions to allow Android init like script
function write() {
echo -n $2 > $1
}
function copy() {
cat $1 > $2
}
function get-set-forall() {
for f in $1 ; do
cat $f
write $f $2
done
}
################################################################################
# take the A57s offline when thermal hotplug is disabled
write /sys/devices/system/cpu/cpu4/online 0
write /sys/devices/system/cpu/cpu5/online 0
# disable thermal bcl hotplug to switch governor
write /sys/module/msm_thermal/core_control/enabled 0
get-set-forall /sys/devices/soc.0/qcom,bcl.*/mode disable
bcl_hotplug_mask=`get-set-forall /sys/devices/soc.0/qcom,bcl.*/hotplug_mask 0`
bcl_hotplug_soc_mask=`get-set-forall /sys/devices/soc.0/qcom,bcl.*/hotplug_soc_mask 0`
get-set-forall /sys/devices/soc.0/qcom,bcl.*/mode enable
# some files in /sys/devices/system/cpu are created after the restorecon of
# /sys/. These files receive the default label "sysfs".
# Restorecon again to give new files the correct label.
restorecon -R /sys/devices/system/cpu
# Best effort limiting for first time boot if msm_performance module is absent
write /sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq 960000
# Limit A57 max freq from msm_perf module in case CPU 4 is offline
write /sys/module/msm_performance/parameters/cpu_max_freq "4:960000 5:960000"
# Disable CPU retention
write /sys/module/lpm_levels/system/a53/cpu0/retention/idle_enabled 0
write /sys/module/lpm_levels/system/a53/cpu1/retention/idle_enabled 0
write /sys/module/lpm_levels/system/a53/cpu2/retention/idle_enabled 0
write /sys/module/lpm_levels/system/a53/cpu3/retention/idle_enabled 0
write /sys/module/lpm_levels/system/a57/cpu4/retention/idle_enabled 0
write /sys/module/lpm_levels/system/a57/cpu5/retention/idle_enabled 0
# Disable L2 retention
write /sys/module/lpm_levels/system/a53/a53-l2-retention/idle_enabled 0
write /sys/module/lpm_levels/system/a57/a57-l2-retention/idle_enabled 0
# configure governor settings for little cluster
write /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor interactive
restorecon -R /sys/devices/system/cpu # must restore after interactive
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/use_sched_load 1
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/use_migration_notif 1
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/above_hispeed_delay 19000
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/go_hispeed_load 99
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/timer_rate 19000
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/hispeed_freq 960000
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/io_is_busy 1
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/target_loads "65 460800:75 960000:80"
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/min_sample_time 40000
write /sys/devices/system/cpu/cpu0/cpufreq/interactive/max_freq_hysteresis 80000
write /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq 384000
# online CPU4
write /sys/devices/system/cpu/cpu4/online 1
# configure governor settings for big cluster
write /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor interactive
restorecon -R /sys/devices/system/cpu # must restore after interactive
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/use_sched_load 1
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/use_migration_notif 1
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/above_hispeed_delay 19000
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/go_hispeed_load 99
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/timer_rate 19000
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/hispeed_freq 1248000
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/io_is_busy 1
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/target_loads "70 960000:80 1248000:85"
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/min_sample_time 40000
write /sys/devices/system/cpu/cpu4/cpufreq/interactive/max_freq_hysteresis 80000
write /sys/devices/system/cpu/cpu4/cpufreq/scaling_min_freq 633600
# restore A57's max
copy /sys/devices/system/cpu/cpu4/cpufreq/cpuinfo_max_freq /sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq
# plugin remaining A57s
write /sys/devices/system/cpu/cpu5/online 1
# Restore CPU 4 max freq from msm_performance
write /sys/module/msm_performance/parameters/cpu_max_freq "4:4294967295 5:4294967295"
# input boost configuration
write /sys/module/cpu_boost/parameters/input_boost_freq "0:960000"
write /sys/module/cpu_boost/parameters/input_boost_ms 40
# Setting B.L scheduler parameters
write /proc/sys/kernel/sched_migration_fixup 1
write /proc/sys/kernel/sched_upmigrate 95
write /proc/sys/kernel/sched_downmigrate 85
write /proc/sys/kernel/sched_freq_inc_notify 400000
write /proc/sys/kernel/sched_freq_dec_notify 400000
#enable rps static configuration
write /sys/class/net/rmnet_ipa0/queues/rx-0/rps_cpus 8
# android background processes are set to nice 10. Never schedule these on the a57s.
write /proc/sys/kernel/sched_upmigrate_min_nice 9
get-set-forall /sys/class/devfreq/qcom,cpubw*/governor bw_hwmon
# Disable sched_boost
write /proc/sys/kernel/sched_boost 0
# re-enable thermal and BCL hotplug
write /sys/module/msm_thermal/core_control/enabled 1
get-set-forall /sys/devices/soc.0/qcom,bcl.*/mode disable
get-set-forall /sys/devices/soc.0/qcom,bcl.*/hotplug_mask $bcl_hotplug_mask
get-set-forall /sys/devices/soc.0/qcom,bcl.*/hotplug_soc_mask $bcl_hotplug_soc_mask
get-set-forall /sys/devices/soc.0/qcom,bcl.*/mode enable
# set GPU default power level to 5 (180MHz) instead of 4 (305MHz)
write /sys/class/kgsl/kgsl-3d0/default_pwrlevel 5