Add dram id functions

Source/rewrite-hoc-clk/sysmodule/src/board/board.cpp

@@ -28,6 +28,7 @@
 #include <sysclk.h>
 #include <switch.h>
 #include <pwm.h>
+#include <registers.h>
 
 #include "board.hpp"
 #include "board_fuse.hpp"
@@ -193,4 +194,22 @@ namespace board {
         return gConsoleType;
     }
 
+    u8 GetDramID() {
+        return dramID;
+    }
+
+    bool IsDram8GB() {
+        SecmonArgs args = {};
+        args.X[0] = 0xF0000002;
+        args.X[1] = MC_REGISTER_BASE + MC_EMEM_CFG_0;
+        svcCallSecureMonitor(&args);
+
+        if (args.X[1] == (MC_REGISTER_BASE + MC_EMEM_CFG_0)) { // if param 1 is identical read failed
+            writeNotification("Horizon OC\nSecmon read failed!\n This may be a hardware issue!");
+            return false;
+        }
+
+        return args.X[1] == 0x00002000 ? true : false;
+    }
+
 }

Source/rewrite-hoc-clk/sysmodule/src/board/board.hpp

@@ -37,5 +37,7 @@ namespace board {
     void Exit();
     SysClkSocType GetSocType();
     HorizonOCConsoleType GetConsoleType();
+    u8 GetDramID();
+    bool isIsDram8GB();
 
 }