boot: Implement DetectBootReason

stratosphere/boot/source/boot_rtc_driver.hpp

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2018-2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <switch.h>
+#include <stratosphere.hpp>
+
+#include "i2c_driver/i2c_api.hpp"
+
+class RtcDriver {
+    private:
+        I2cSessionImpl i2c_session;
+    public:
+        RtcDriver() {
+            I2cDriver::Initialize();
+            I2cDriver::OpenSession(&this->i2c_session, I2cDevice_Max77620Rtc);
+        }
+
+        ~RtcDriver() {
+            I2cDriver::CloseSession(this->i2c_session);
+            I2cDriver::Finalize();
+        }
+    private:
+        Result ReadRtcRegister(u8 *out, u8 address);
+    public:
+        Result GetRtcIntr(u8 *out);
+        Result GetRtcIntrM(u8 *out);
+};