diff --git a/sdk/xtdk/blfuncs.h b/sdk/xtdk/blfuncs.h
index 4252fbe..6dc2bad 100644
--- a/sdk/xtdk/blfuncs.h
+++ b/sdk/xtdk/blfuncs.h
@@ -14,11 +14,6 @@
 
 
 /* XT BootLoader routines forward references */
-XTCLINK
-XTCDECL
-VOID
-ArEnableExtendedPhysicalAddressing(IN ULONG_PTR PageMap);
-
 XTCLINK
 XTCDECL
 EFI_STATUS
diff --git a/sdk/xtdk/bltypes.h b/sdk/xtdk/bltypes.h
index f2202ec..31379f6 100644
--- a/sdk/xtdk/bltypes.h
+++ b/sdk/xtdk/bltypes.h
@@ -48,6 +48,7 @@ typedef EFI_STATUS (XTCDECL *PBL_ALLOCATE_PAGES)(IN EFI_ALLOCATE_TYPE Allocation
 typedef EFI_STATUS (XTCDECL *PBL_ALLOCATE_POOL)(IN UINT_PTR Size, OUT PVOID *Memory);
 typedef EFI_STATUS (XTCDECL *PBL_BOOTMENU_INITIALIZE_OS_LIST)(IN ULONG MaxNameLength, OUT PXTBL_BOOTMENU_ITEM *MenuEntries, OUT PULONG EntriesCount, OUT PULONG DefaultId);
 typedef BOOLEAN (XTCDECL *PBL_BOOTUTIL_GET_BOOLEAN_PARAMETER)(IN PCWSTR Parameters, IN PCWSTR Needle);
+typedef VOID (XTAPI *PBL_BOOTUTIL_GET_TRAMPOLINE_INFORMATION)(IN TRAMPOLINE_TYPE TrampolineType, OUT PVOID *TrampolineCode, OUT PULONG_PTR TrampolineSize);
 typedef EFI_STATUS (XTCDECL *PBL_BUILD_PAGE_MAP)(IN PXTBL_PAGE_MAPPING PageMap, IN ULONG_PTR SelfMapAddress);
 typedef EFI_STATUS (XTCDECL *PBL_CLOSE_VOLUME)(IN PEFI_HANDLE VolumeHandle);
 typedef VOID (XTCDECL *PBL_CLEAR_CONSOLE_LINE)(IN ULONGLONG LineNo);
@@ -388,6 +389,7 @@ typedef struct _XTBL_LOADER_PROTOCOL
     struct
     {
         PBL_BOOTUTIL_GET_BOOLEAN_PARAMETER GetBooleanParameter;
+        PBL_BOOTUTIL_GET_TRAMPOLINE_INFORMATION GetTrampolineInformation;
     } BootUtil;
     struct
     {
diff --git a/xtldr/includes/libxtos.hh b/xtldr/includes/libxtos.hh
index c3abd53..741d523 100644
--- a/xtldr/includes/libxtos.hh
+++ b/xtldr/includes/libxtos.hh
@@ -24,6 +24,14 @@ namespace AR
             STATIC XTCDECL VOID WriteControlRegister(IN USHORT ControlRegister,
                                                      IN UINT_PTR Value);
     };
+
+    class ProcSup
+    {
+        public:
+            STATIC XTAPI VOID GetTrampolineInformation(IN TRAMPOLINE_TYPE TrampolineType,
+                                                       OUT PVOID *TrampolineCode,
+                                                       OUT PULONG_PTR TrampolineSize);
+    };
 }
 
 /* Minimal forward references for HL classes used by XTLDR */
diff --git a/xtldr/modules/xtos_o/amd64/memory.cc b/xtldr/modules/xtos_o/amd64/memory.cc
index 883b3f7..cde1f56 100644
--- a/xtldr/modules/xtos_o/amd64/memory.cc
+++ b/xtldr/modules/xtos_o/amd64/memory.cc
@@ -74,6 +74,7 @@ Xtos::EnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
     EFI_PHYSICAL_ADDRESS TrampolineAddress;
     PXT_TRAMPOLINE_ENTRY TrampolineEntry;
     ULONG_PTR TrampolineSize;
+    PVOID TrampolineCode;
 
     /* Build page map */
     Status = XtLdrProtocol->Memory.BuildPageMap(PageMap, (PageMap->PageMapLevel > 4) ? MM_P5E_LA57_BASE : MM_PXE_BASE);
@@ -96,12 +97,18 @@ Xtos::EnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
     /* Check the configured page map level to set the LA57 state accordingly */
     if(PageMap->PageMapLevel == 5)
     {
+        /* Get the trampoline code information */
+        XtLdrProtocol->BootUtil.GetTrampolineInformation(TrampolineEnableXpa, &TrampolineCode, &TrampolineSize);
+        if(TrampolineCode == NULLPTR || TrampolineSize == 0)
+        {
+            /* Failed to get trampoline information */
+            XtLdrProtocol->Debug.Print(L"Failed to get trampoline information\n");
+            return STATUS_EFI_INVALID_PARAMETER;
+        }
+
         /* Set the address of the trampoline code below 1MB */
         TrampolineAddress = MM_TRAMPOLINE_ADDRESS;
 
-        /* Calculate the size of the trampoline code */
-        TrampolineSize = (ULONG_PTR)ArEnableExtendedPhysicalAddressingEnd - (ULONG_PTR)ArEnableExtendedPhysicalAddressing;
-
         /* Allocate pages for the trampoline */
         Status = XtLdrProtocol->Memory.AllocatePages(AllocateAddress, EFI_SIZE_TO_PAGES(TrampolineSize), &TrampolineAddress);
         if(Status != STATUS_EFI_SUCCESS)
@@ -113,7 +120,7 @@ Xtos::EnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
 
         /* Set the trampoline entry point and copy its code into the allocated buffer */
         TrampolineEntry = (PXT_TRAMPOLINE_ENTRY)(UINT_PTR)TrampolineAddress;
-        XtLdrProtocol->Memory.CopyMemory((PVOID)TrampolineEntry, (PVOID)ArEnableExtendedPhysicalAddressing, TrampolineSize);
+        XtLdrProtocol->Memory.CopyMemory((PVOID)TrampolineEntry, TrampolineCode, TrampolineSize);
     }
 
     /* Exit EFI Boot Services */
diff --git a/xtldr/modules/xtos_o/includes/xtos.hh b/xtldr/modules/xtos_o/includes/xtos.hh
index 7222b1f..4d70606 100644
--- a/xtldr/modules/xtos_o/includes/xtos.hh
+++ b/xtldr/modules/xtos_o/includes/xtos.hh
@@ -18,9 +18,6 @@ typedef VOID (XTAPI *PXT_ENTRY_POINT)(IN PKERNEL_INITIALIZATION_BLOCK BootParame
 /* XTOS trampoline entry point */
 typedef VOID (*PXT_TRAMPOLINE_ENTRY)(UINT64 PageMap);
 
-/* XTOS trampoline end address to calculate trampoline size */
-XTCLINK PVOID ArEnableExtendedPhysicalAddressingEnd[];
-
 
 /* XTOS module for XTLDR */
 class Xtos
diff --git a/xtldr/protocol.cc b/xtldr/protocol.cc
index 12efab9..66cafca 100644
--- a/xtldr/protocol.cc
+++ b/xtldr/protocol.cc
@@ -869,6 +869,7 @@ BlpInstallXtLoaderProtocol()
     BlpLdrProtocol.Boot.RegisterMenu = BlRegisterBootMenu;
     BlpLdrProtocol.Boot.RegisterProtocol = BlRegisterBootProtocol;
     BlpLdrProtocol.BootUtil.GetBooleanParameter = BlGetBooleanParameter;
+    BlpLdrProtocol.BootUtil.GetTrampolineInformation = AR::ProcSup::GetTrampolineInformation;
     BlpLdrProtocol.Config.GetBooleanValue = BlGetConfigBooleanValue;
     BlpLdrProtocol.Config.GetBootOptionValue = BlGetBootOptionValue;
     BlpLdrProtocol.Config.GetEditableOptions = BlGetEditableOptions;