diff --git a/init/init_land.cpp b/init/init_land.cpp
index 4c642dc..4b3111a 100644
--- a/init/init_land.cpp
+++ b/init/init_land.cpp
@@ -29,6 +29,8 @@
 
 #include <cstdlib>
 #include <fstream>
+#include <stdlib.h>
+#include <stdio.h>
 #include <string>
 
 #include "vendor_init.h"
@@ -36,6 +38,37 @@
 #include "log.h"
 #include "util.h"
 
+static void init_alarm_boot_properties()
+{
+    int boot_reason;
+    FILE *fp;
+
+    fp = fopen("/proc/sys/kernel/boot_reason", "r");
+    fscanf(fp, "%d", &boot_reason);
+    fclose(fp);
+
+    /*
+     * 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 inserted
+     * 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 (boot_reason == 3) {
+        property_set("ro.alarm_boot", "true");
+     } else {
+        property_set("ro.alarm_boot", "false");
+     }
+}
+
 void vendor_load_properties()
 {
     std::ifstream fin;
@@ -51,6 +84,8 @@ void vendor_load_properties()
             break;
     fin.close();
 
+    init_alarm_boot_properties();
+
     if (buf.find("S88537AA1") != std::string::npos) {
         property_set("ro.build.display.wtid", "SW_S88537AA1_V071_M20_MP_XM");
     } else if (buf.find("S88537AB1") != std::string::npos) {