land: Add QCOM init extension library

Change-Id: Ia21180b56c73304519e8ff1499b38db589b39cef

init/Android.mk

@@ -0,0 +1,26 @@
+#
+# Copyright (C) 2016 The CyanogenMod 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.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_C_INCLUDES := system/core/init
+LOCAL_MODULE := libinit_land
+LOCAL_MODULE_TAGS := optional
+LOCAL_SRC_FILES := init_land.cpp
+
+include $(BUILD_STATIC_LIBRARY)

init/init_land.cpp

@@ -0,0 +1,92 @@
+/*
+   Copyright (c) 2016, The CyanogenMod Project
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of The Linux Foundation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+   WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+   ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+   BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+   BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+   IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <fcntl.h>
+#include <stdlib.h>
+
+#include "vendor_init.h"
+#include "property_service.h"
+#include "log.h"
+#include "util.h"
+
+static int read_file2(const char *fname, char *data, int max_size)
+{
+    int fd, rc;
+
+    if (max_size < 1)
+        return 0;
+
+    fd = open(fname, O_RDONLY);
+    if (fd < 0) {
+        ERROR("failed to open '%s'\n", fname);
+        return 0;
+    }
+
+    rc = read(fd, data, max_size - 1);
+    if ((rc > 0) && (rc < max_size))
+        data[rc] = '\0';
+    else
+        data[0] = '\0';
+    close(fd);
+
+    return 1;
+}
+
+static void init_alarm_boot_properties()
+{
+    char const *alarm_file = "/proc/sys/kernel/boot_reason";
+    char buf[64];
+
+    if (read_file2(alarm_file, buf, sizeof(buf))) {
+        /*
+         * Setup ro.alarm_boot value to true when it is RTC triggered boot up
+         * For existing PMIC chips, the following mapping applies
+         * for the value of boot_reason:
+         *
+         * 0 -> unknown
+         * 1 -> hard reset
+         * 2 -> sudden momentary power loss (SMPL)
+         * 3 -> real time clock (RTC)
+         * 4 -> DC charger inserted
+         * 5 -> USB charger insertd
+         * 6 -> PON1 pin toggled (for secondary PMICs)
+         * 7 -> CBLPWR_N pin toggled (for external power supply)
+         * 8 -> KPDPWR_N pin toggled (power key pressed)
+         */
+        if (buf[0] == '3')
+            property_set("ro.alarm_boot", "true");
+        else
+            property_set("ro.alarm_boot", "false");
+    }
+}
+
+void vendor_load_properties()
+{
+    init_alarm_boot_properties();
+}