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#!/bin/bash
#
# Copyright (c) 2016-2017, Linaro Ltd.
# All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Used for setting the freq of Nexus devices.
readonly local_path=$(dirname "$0")
source "${local_path}/../utils/utils.sh"
source "${local_path}/../utils/utils_android.sh"
source "${local_path}/cpu_freq_utils.sh"
declare -A options
target_device=
init_options() {
options["cpus"]="all"
options["pin-freq"]="false"
options["default"]="false"
}
validate_options() {
if ${options["default"]} && ( ${options["pin-freq"]} || [[ "${options["cpus"]}" != "all" ]] ); then
log E "The option \`--default\` is incompatible with \`--pin-freq\`, \`--big\`, and \`--little\` options."
exit 1
fi
}
usage() {
log I "$0"
log I "This script should be used for frequency scaling your device."
log I " -h|--help - help"
log I " -v|--verbose - verbose"
log I "-------------------------------------------"
log I "Cluster: (does not pin the frequency by default)."
log I " --all - Enable all CPUs (default)."
log I " --big - Enable only the big cluster in a big.LITTLE SoC."
log I " --little - Enable only the little cluster in a big.LITTLE SoC."
log I ""
log I " --pin-freq - Pin the frequency of enabled cores."
log I " --default - Restore the CPUs to the default configuration."
log I ""
log I "Example Usage: ./set_cpu_freq.sh --big --pin-freq"
log I "-------------------------------------------"
}
arguments_parser() {
init_options
while [[ $# -gt 0 ]]; do
case "$1" in
-v|--verbose)
enable_verbose
;;
-h|--help)
usage
exit 0
;;
--all|--big|--little)
set_option "cpus" "${1#--}"
;;
--pin-freq|--default)
set_option "$1"
;;
*)
log E "Invalid option: $1"
exit 1
;;
esac
shift
done
readonly options
validate_options
}
print_freq() {
printf "%'u Hz" "${TARGET_FREQ}"
}
set_device_freq() {
# We need root for writing to /sys files.
adb_root
if ! ${DEVICE_IS_BIG_LITTLE} && [[ ${options["cpus"]} != "all" ]]; then
log E "Device ${target_device} is single-cluster, do not use \`--big\` or \`little\` options."
fi
if ${options["default"]}; then
log I "Restoring CPUs configuration to defaults."
set_default_cpu_config
exit 0
fi
case ${options["cpus"]} in
all)
log I "Enabling all CPUs."
safe enable_cpus "${CPUS[@]}"
;;
big)
log I "Enabling only the big cluster."
safe enable_cpus "${BIG_CPUS[@]}"
safe disable_cpus "${LITTLE_CPUS[@]}"
;;
little)
log I "Enabling only the little cluster."
safe enable_cpus "${LITTLE_CPUS[@]}"
safe disable_cpus "${BIG_CPUS[@]}"
;;
esac
if ${options["pin-freq"]}; then
if ! ${DEVICE_IS_BIG_LITTLE}; then
log I "Pinning the frequency on all cores."
safe set_freq_cpus "${TARGET_FREQ}" "${CPUS[@]}"
else
case ${options["cpus"]} in
big|all)
log I "Pinning the frequency on the big cores."
safe set_freq_cpus "${TARGET_FREQ_BIG:-${TARGET_FREQ}}" "${BIG_CPUS[@]}"
;;&
little|all)
log I "Pinning the frequency on the little cores."
safe set_freq_cpus "${TARGET_FREQ_LITTLE:-${TARGET_FREQ}}" "${LITTLE_CPUS[@]}"
;;
esac
fi
fi
}
main() {
arguments_parser "$@"
# Make sure that adb is started before checking the board name.
safe adb start-server
readonly target_device=$(safe adb_shell getprop ro.product.device)
log I "Detected device ${target_device}"
exit_on_failure get_device_settings "${target_device}" "${local_path}/config"
set_device_freq
}
main "$@"
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