2 files changed, 38 insertions, 0 deletions
diff --git a/src/Components/FirmwareValidator/FirmwareValidator.cpp b/src/Components/FirmwareValidator/FirmwareValidator.cpp
new file mode 100644
index 00000000..244d5c06
--- /dev/null
+++ b/src/Components/FirmwareValidator/FirmwareValidator.cpp
@@ -0,0 +1,20 @@
+#include <drivers/InternalFlash.h>
+#include <hal/nrf_rtc.h>
+
+#include "FirmwareValidator.h"
+
+using namespace Pinetime::Controllers;
+
+bool FirmwareValidator::IsValidated() const {
+  auto* imageOkPtr = reinterpret_cast<uint32_t *>(validBitAdress);
+  return (*imageOkPtr) == validBitValue;
+}
+
+void FirmwareValidator::Validate() {
+  if(!IsValidated())
+    Pinetime::Drivers::InternalFlash::WriteWord(validBitAdress, validBitValue);
+}
+
+void FirmwareValidator::Reset() {
+  NVIC_SystemReset();
+}
diff --git a/src/Components/FirmwareValidator/FirmwareValidator.h b/src/Components/FirmwareValidator/FirmwareValidator.h
new file mode 100644
index 00000000..aa576d88
--- /dev/null
+++ b/src/Components/FirmwareValidator/FirmwareValidator.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <cstdint>
+
+namespace Pinetime {
+  namespace Controllers {
+    class FirmwareValidator {
+      public:
+        void Validate();
+        bool IsValidated() const;
+
+        void Reset();
+      private:
+        static constexpr uint32_t validBitAdress {0x7BFE8};
+        static constexpr uint32_t validBitValue {1};
+    };
+  }
+}