diff --git a/bmc_state_manager.cpp b/bmc_state_manager.cpp
index 667e300..5389fc5 100644
--- a/bmc_state_manager.cpp
+++ b/bmc_state_manager.cpp
@@ -1,6 +1,5 @@
-#include <iostream>
-#include <string>
 #include <phosphor-logging/log.hpp>
+#include <sys/sysinfo.h>
 #include "bmc_state_manager.hpp"
 
 namespace phosphor
@@ -164,6 +163,21 @@
     return server::BMC::currentBMCState(value);
 }
 
+uint64_t BMC::lastRebootTime() const
+{
+    using namespace std::chrono;
+    struct sysinfo info;
+
+    auto rc = sysinfo(&info);
+    assert(rc == 0);
+
+    // Since uptime is in seconds, also get the current time in seconds.
+    auto now = time_point_cast<seconds>(system_clock::now());
+    auto rebootTime = now - seconds(info.uptime);
+
+    return duration_cast<milliseconds>(rebootTime.time_since_epoch()).count();
+}
+
 } // namespace manager
 } // namespace state
 } // namepsace phosphor