diff --git a/sdk/xtdk/bltypes.h b/sdk/xtdk/bltypes.h
index 09e20c8..1feb9fd 100644
--- a/sdk/xtdk/bltypes.h
+++ b/sdk/xtdk/bltypes.h
@@ -42,7 +42,7 @@
 /* TUI dialog box maximum width */
 #define XTBL_TUI_MAX_DIALOG_WIDTH                    100
 
-/* Loader protocol routine pointers */
+/* Boot Loader protocol routine pointers */
 typedef EFI_STATUS (*PBL_ALLOCATE_PAGES)(IN UINT64 Size, OUT PEFI_PHYSICAL_ADDRESS Memory);
 typedef EFI_STATUS (*PBL_ALLOCATE_POOL)(IN UINT_PTR Size, OUT PVOID *Memory);
 typedef EFI_STATUS (*PBL_CLOSE_VOLUME)(IN PEFI_HANDLE VolumeHandle);
@@ -65,6 +65,10 @@ typedef EFI_STATUS (*PBL_OPEN_VOLUME)(IN PEFI_DEVICE_PATH_PROTOCOL DevicePath, O
 typedef EFI_STATUS (*PBL_OPEN_XT_PROTOCOL)(OUT PVOID *ProtocolHandler, IN PEFI_GUID ProtocolGuid);
 typedef EFI_STATUS (*PBL_READ_FILE)(IN PEFI_FILE_HANDLE DirHandle, IN CONST PWCHAR FileName, OUT PVOID *FileData, OUT PSIZE_T FileSize);
 typedef VOID (*PBL_SLEEP_EXECUTION)(IN ULONG_PTR Milliseconds);
+typedef VOID (*PBL_TUI_DISPLAY_ERROR_DIALOG)(IN PWCHAR Caption, IN PWCHAR Message);
+typedef VOID (*PBL_TUI_DISPLAY_INFO_DIALOG)(IN PWCHAR Caption, IN PWCHAR Message);
+typedef XTBL_DIALOG_HANDLE (*PBL_TUI_DISPLAY_PROGRESS_DIALOG)(IN PWCHAR Caption, IN PWCHAR Message, IN UCHAR Percentage);
+typedef VOID (*PBL_TUI_UPDATE_PROGRESS_BAR)(IN PXTBL_DIALOG_HANDLE Handle, IN PWCHAR Message, IN UCHAR Percentage);
 typedef EFI_STATUS (*PBL_WAIT_FOR_EFI_EVENT)(IN UINT_PTR NumberOfEvents, IN PEFI_EVENT Event, OUT PUINT_PTR Index);
 
 /* XTLDR Configuration data */
@@ -143,6 +147,13 @@ typedef struct _XTBL_LOADER_PROTOCOL
         PBL_OPEN_XT_PROTOCOL Open;
     } Protocol;
     struct
+    {
+        PBL_TUI_DISPLAY_ERROR_DIALOG DisplayErrorDialog;
+        PBL_TUI_DISPLAY_INFO_DIALOG DisplayInfoDialog;
+        PBL_TUI_DISPLAY_PROGRESS_DIALOG DisplayProgressDialog;
+        PBL_TUI_UPDATE_PROGRESS_BAR UpdateProgressBar;
+    } Tui;
+    struct
     {
         PBL_EXIT_BOOT_SERVICES ExitBootServices;
         PBL_GET_SECURE_BOOT_STATUS GetSecureBootStatus;
diff --git a/xtldr2/protocol.c b/xtldr2/protocol.c
index 2ac749a..b1ebd77 100644
--- a/xtldr2/protocol.c
+++ b/xtldr2/protocol.c
@@ -109,6 +109,10 @@ BlpRegisterXtLoaderProtocol()
     LdrProtocol.Memory.FreePages = BlMemoryFreePages;
     LdrProtocol.Memory.FreePool = BlMemoryFreePool;
     LdrProtocol.Protocol.Open = BlOpenXtProtocol;
+    LdrProtocol.Tui.DisplayErrorDialog = BlDisplayErrorDialog;
+    LdrProtocol.Tui.DisplayInfoDialog = BlDisplayInfoDialog;
+    LdrProtocol.Tui.DisplayProgressDialog = BlDisplayProgressDialog;
+    LdrProtocol.Tui.UpdateProgressBar = BlUpdateProgressBar;
     LdrProtocol.Util.ExitBootServices = BlExitBootServices;
     LdrProtocol.Util.GetSecureBootStatus = BlGetSecureBootStatus;
     LdrProtocol.Util.SleepExecution = BlSleepExecution;