diff --git a/inc/efiapi.h b/inc/efiapi.h
index 6d830f1..e7d2abd 100644
--- a/inc/efiapi.h
+++ b/inc/efiapi.h
@@ -107,8 +107,6 @@ EFI_STATUS
 // EFI Events
 //
 
-
-
 #define EVT_TIMER                           0x80000000
 #define EVT_RUNTIME                         0x40000000
 #define EVT_RUNTIME_CONTEXT                 0x20000000
@@ -120,7 +118,18 @@ EFI_STATUS
 #define EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE   0x60000202
 
 #define EVT_EFI_SIGNAL_MASK                 0x000000FF
-#define EVT_EFI_SIGNAL_MAX                  2
+#define EVT_EFI_SIGNAL_MAX                  4
+
+#define EFI_EVENT_TIMER                         EVT_TIMER
+#define EFI_EVENT_RUNTIME                       EVT_RUNTIME
+#define EFI_EVENT_RUNTIME_CONTEXT               EVT_RUNTIME_CONTEXT
+#define EFI_EVENT_NOTIFY_WAIT                   EVT_NOTIFY_WAIT
+#define EFI_EVENT_NOTIFY_SIGNAL                 EVT_NOTIFY_SIGNAL
+#define EFI_EVENT_SIGNAL_EXIT_BOOT_SERVICES     EVT_SIGNAL_EXIT_BOOT_SERVICES
+#define EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE
+#define EFI_EVENT_EFI_SIGNAL_MASK               EVT_EFI_SIGNAL_MASK
+#define EFI_EVENT_EFI_SIGNAL_MAX                EVT_EFI_SIGNAL_MAX
+
 
 typedef
 VOID
@@ -184,11 +193,14 @@ EFI_STATUS
 // Task priority level
 //
 
-#define TPL_APPLICATION    4
-#define TPL_CALLBACK       8
-#define TPL_NOTIFY        16 
-#define TPL_HIGH_LEVEL    31 
-
+#define TPL_APPLICATION       4
+#define TPL_CALLBACK          8
+#define TPL_NOTIFY           16
+#define TPL_HIGH_LEVEL       31
+#define EFI_TPL_APPLICATION  TPL_APPLICATION
+#define EFI_TPL_CALLBACK     TPL_CALLBACK
+#define EFI_TPL_NOTIFY       TPL_NOTIFY
+#define EFI_TPL_HIGH_LEVEL   TPL_HIGH_LEVEL
 typedef
 EFI_TPL
 (EFIAPI *EFI_RAISE_TPL) (
@@ -314,6 +326,22 @@ EFI_STATUS
 #define EFI_IMAGE_MACHINE_IA64      0x0200
 #endif
 
+#if !defined(EFI_IMAGE_MACHINE_EBC)
+#define EFI_IMAGE_MACHINE_EBC      0x0EBC
+#endif
+
+#if !defined(EFI_IMAGE_MACHINE_X64)
+#define EFI_IMAGE_MACHINE_X64       0x8664
+#endif
+
+#if !defined(EFI_IMAGE_MACHINE_ARMTHUMB_MIXED)
+#define EFI_IMAGE_MACHINE_ARMTHUMB_MIXED 0x01C2
+#endif
+
+#if !defined(EFI_IMAGE_MACHINE_AARCH64)
+#define EFI_IMAGE_MACHINE_AARCH64   0xAA64
+#endif
+
 // Image Entry prototype
 
 typedef 
diff --git a/inc/eficon.h b/inc/eficon.h
index 43d2cd4..5d17e04 100644
--- a/inc/eficon.h
+++ b/inc/eficon.h
@@ -150,7 +150,7 @@ typedef struct _SIMPLE_TEXT_OUTPUT_INTERFACE {
 
     // Current mode
     SIMPLE_TEXT_OUTPUT_MODE         *Mode;
-} SIMPLE_TEXT_OUTPUT_INTERFACE;
+} SIMPLE_TEXT_OUTPUT_INTERFACE, EFI_SIMPLE_TEXT_OUT_PROTOCOL;
 
 //
 // Define's for required EFI Unicode Box Draw character
@@ -278,6 +278,8 @@ typedef struct {
 #define SCAN_F8                         0x0012
 #define SCAN_F9                         0x0013
 #define SCAN_F10                        0x0014
+#define SCAN_F11                        0x0015
+#define SCAN_F12                        0x0016
 #define SCAN_ESC                        0x0017
 
 typedef
@@ -298,7 +300,7 @@ typedef struct _SIMPLE_INPUT_INTERFACE {
     EFI_INPUT_RESET                     Reset;
     EFI_INPUT_READ_KEY                  ReadKeyStroke;
     EFI_EVENT                           WaitForKey;
-} SIMPLE_INPUT_INTERFACE;
+} SIMPLE_INPUT_INTERFACE, EFI_SIMPLE_TEXT_IN_PROTOCOL;
 
 #endif
 
diff --git a/inc/efilib.h b/inc/efilib.h
index 33e8cf7..5812ec4 100644
--- a/inc/efilib.h
+++ b/inc/efilib.h
@@ -33,8 +33,11 @@ Revision History
 //
 
 extern EFI_SYSTEM_TABLE         *ST;
+#define gST                      ST
 extern EFI_BOOT_SERVICES        *BS;
+#define gBS                      BS
 extern EFI_RUNTIME_SERVICES     *RT;
+#define gRT                      RT
 
 extern EFI_GUID gEfiDevicePathProtocolGuid;
 #define DevicePathProtocol gEfiDevicePathProtocolGuid