bcl: Add Mitigation Logger

Mitigation Logger logs battery related information for 1 second when it
is triggered by under voltage or over current interrupts.  Information
collected is to help debug system brownout.

Bug: 228383769
Test: Boot and Test
Signed-off-by: George Lee <geolee@google.com>
Change-Id: I24e5075b12a9bb3f16241de268254bde38c133d0

battery_mitigation/Android.bp

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * 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.
+ */
+
+soong_namespace {
+    imports: [
+        "hardware/google/pixel",
+    ],
+}
+
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+cc_binary {
+    vendor: true,
+    name: "battery_mitigation",
+    relative_install_path: "hw",
+    proprietary: true,
+    init_rc: ["battery_mitigation.rc"],
+    shared_libs: [
+        "libpixelmitigation",
+        "libbase",
+        "libbinder_ndk",
+        "libcutils",
+        "libhardware",
+        "libhidlbase",
+        "liblog",
+        "libutils",
+        "android.hardware.thermal@2.0"
+    ],
+    srcs: [
+        "battery_mitigation.cpp",
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+}

battery_mitigation/battery_mitigation.cpp

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#define LOG_TAG "battery-mitigation"
+
+#include <battery_mitigation/BatteryMitigation.h>
+
+using android::hardware::google::pixel::BatteryMitigation;
+using android::hardware::google::pixel::MitigationConfig;
+
+android::sp<BatteryMitigation> bmSp;
+
+const struct MitigationConfig::Config cfg = {
+    .SystemPath = {
+        "/dev/thermal/tz-by-name/batoilo/temp",
+        "/dev/thermal/tz-by-name/smpl_gm/temp",
+        "/dev/thermal/tz-by-name/soc/temp",
+        "/dev/thermal/tz-by-name/vdroop1/temp",
+        "/dev/thermal/tz-by-name/vdroop2/temp",
+        "/dev/thermal/tz-by-name/ocp_gpu/temp",
+        "/dev/thermal/tz-by-name/ocp_tpu/temp",
+        "/dev/thermal/tz-by-name/soft_ocp_cpu2/temp",
+        "/dev/thermal/tz-by-name/soft_ocp_cpu1/temp",
+        "/dev/thermal/tz-by-name/battery/temp",
+        "/dev/thermal/tz-by-name/battery_cycle/temp",
+        "/sys/bus/iio/devices/iio:device0/lpf_power",
+        "/sys/bus/iio/devices/iio:device1/lpf_power",
+        "/dev/thermal/cdev-by-name/thermal-cpufreq-2/cur_state",
+        "/dev/thermal/cdev-by-name/thermal-cpufreq-1/cur_state",
+        "/dev/thermal/cdev-by-name/thermal-gpufreq-0/cur_state",
+        "/dev/thermal/cdev-by-name/tpu_cooling/cur_state",
+        "/dev/thermal/cdev-by-name/CAM/cur_state",
+        "/dev/thermal/cdev-by-name/DISP/cur_state",
+        "/dev/thermal/cdev-by-name/gxp-cooling/cur_state",
+        "/sys/class/power_supply/battery/voltage_now",
+        "/sys/class/power_supply/battery/current_now",
+    },
+    .FilteredZones = {
+        "batoilo",
+        "vdroop1",
+        "vdroop2",
+        "smpl_gm",
+    },
+    .SystemName = {
+        "batoilo", "smpl_gm", "soc", "vdroop1", "vdroop2", "ocp_gpu",
+        "ocp_tpu", "soft_ocp_cpu2", "soft_ocp_cpu1", "battery", "battery_cycle",
+        "main", "sub", "CPU2", "CPU1", "GPU", "TPU", "CAM", "DISP", "NPU",
+        "voltage_now", "current_now",
+    },
+    .LogFilePath = "/data/vendor/mitigation/thismeal.txt",
+    .TimestampFormat = "%Y-%m-%d %H:%M:%S",
+};
+
+const char kReadyFilePath[] = "/sys/devices/virtual/pmic/mitigation/instruction/ready";
+const char kReadyProperty[] = "vendor.brownout.mitigation.ready";
+const char kLastMealPath[] = "/data/vendor/mitigation/lastmeal.txt";
+const char kBRRequestedProperty[] = "vendor.startup_bugreport_requested";
+const std::regex kTimestampRegex("^\\S+\\s[0-9]+:[0-9]+:[0-9]+\\S+$");
+
+int main(int /*argc*/, char ** /*argv*/) {
+    auto batteryMitigationStartTime = std::chrono::system_clock::now();
+    bmSp = new BatteryMitigation(cfg);
+    if (!bmSp) {
+        return 0;
+    }
+    bool mitigationLogTimeValid = bmSp->isMitigationLogTimeValid(batteryMitigationStartTime,
+                                                                 cfg.LogFilePath,
+                                                                 cfg.TimestampFormat,
+                                                                 kTimestampRegex);
+    int startupBugreport = android::base::GetIntProperty(kBRRequestedProperty, 0);
+    if (startupBugreport && mitigationLogTimeValid) {
+        std::ifstream src(cfg.LogFilePath, std::ios::in);
+        std::ofstream dst(kLastMealPath, std::ios::out);
+        dst << src.rdbuf();
+    }
+    bool isBatteryMitigationReady = false;
+    std::string ready_str;
+    int val = 0;
+    while (!isBatteryMitigationReady) {
+        if (!android::base::ReadFileToString(kReadyFilePath, &ready_str)) {
+            continue;
+        }
+        ready_str = android::base::Trim(ready_str);
+        if (!android::base::ParseInt(ready_str, &val)) {
+            continue;
+        }
+        if (val == 1) {
+            isBatteryMitigationReady = true;
+        }
+    }
+    android::base::SetProperty(kReadyProperty, "1");
+    while (true) {
+        pause();
+    }
+    return 0;
+}

battery_mitigation/battery_mitigation.rc

@@ -0,0 +1,93 @@
+on property:vendor.thermal.link_ready=1
+    mkdir /data/vendor/mitigation 0755 system system
+    chown system system /data/vendor/mitigation
+    start vendor.battery_mitigation
+
+on property:ro.boot.bootreason=reboot,uvlo,pmic,if
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,pmic,if
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,uvlo,pmic,main
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,uvlo,pmic,sub
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck1m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck2m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck3m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck4m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck5m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck6m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck7m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck8m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck9m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck10m
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck1s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck2s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck3s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck4s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck5s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck6s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck7s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck8s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck9s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buck10s
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buckds
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buckas
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buckcs
+    setprop vendor.startup_bugreport_requested 1
+
+on property:ro.boot.bootreason=reboot,ocp,buckbs
+    setprop vendor.startup_bugreport_requested 1
+
+service vendor.battery_mitigation /vendor/bin/hw/battery_mitigation
+    user system
+    group system
+    capabilities WAKE_ALARM BLOCK_SUSPEND

battery_mitigation/bcl.mk

@@ -0,0 +1,4 @@
+PRODUCT_PACKAGES += battery_mitigation
+
+BOARD_VENDOR_SEPOLICY_DIRS += device/google/gs-common/battery_mitigation/sepolicy
+PRODUCT_SOONG_NAMESPACES += device/google/gs-common/battery_mitigation

battery_mitigation/sepolicy/battery_mitigation.te

@@ -0,0 +1,21 @@
+type battery_mitigation, domain;
+type battery_mitigation_exec, exec_type, vendor_file_type, file_type;
+init_daemon_domain(battery_mitigation)
+get_prop(battery_mitigation, boot_status_prop)
+get_prop(battery_mitigation, vendor_startup_bugreport_requested_prop)
+set_prop(battery_mitigation, vendor_mitigation_ready_prop)
+
+hal_client_domain(battery_mitigation, hal_thermal);
+hal_client_domain(battery_mitigation, hal_health);
+
+r_dir_file(battery_mitigation, sysfs_batteryinfo)
+r_dir_file(battery_mitigation, sysfs_iio_devices)
+r_dir_file(battery_mitigation, sysfs_thermal)
+r_dir_file(battery_mitigation, thermal_link_device)
+r_dir_file(battery_mitigation, sysfs_odpm)
+allow battery_mitigation sysfs_bcl:dir r_dir_perms;
+allow battery_mitigation sysfs_bcl:file r_file_perms;
+allow battery_mitigation sysfs_bcl:lnk_file r_file_perms;
+allow battery_mitigation sysfs_thermal:lnk_file r_file_perms;
+allow battery_mitigation mitigation_vendor_data_file:dir rw_dir_perms;
+allow battery_mitigation mitigation_vendor_data_file:file create_file_perms;

battery_mitigation/sepolicy/file.te

@@ -0,0 +1,3 @@
+type mitigation_vendor_data_file, file_type, data_file_type;
+type sysfs_bcl, sysfs_type, fs_type;
+type sysfs_odpm, sysfs_type, fs_type;

battery_mitigation/sepolicy/file_contexts

@@ -0,0 +1,2 @@
+/vendor/bin/hw/battery_mitigation                                           u:object_r:battery_mitigation_exec:s0
+/data/vendor/mitigation(/.*)?                                               u:object_r:mitigation_vendor_data_file:s0

battery_mitigation/sepolicy/genfs_contexts

@@ -0,0 +1 @@
+genfscon sysfs /devices/virtual/pmic/mitigation                                u:object_r:sysfs_bcl:s0

battery_mitigation/sepolicy/property.te

@@ -0,0 +1,3 @@
+# Battery Mitigation
+vendor_internal_prop(vendor_mitigation_ready_prop)
+vendor_internal_prop(vendor_startup_bugreport_requested_prop)

battery_mitigation/sepolicy/property_contexts

@@ -0,0 +1,3 @@
+# Battery Mitigation
+vendor.brownout.mitigation.ready           u:object_r:vendor_mitigation_ready_prop:s0
+vendor.startup_bugreport_requested         u:object_r:vendor_startup_bugreport_requested_prop:s0