Map the physical page for trampoline code

sdk/xtdk/amd64/mmtypes.h

@@ -63,6 +63,9 @@
 /* Maximum physical address used by HAL allocations */
 #define MM_MAXIMUM_PHYSICAL_ADDRESS                0x00000000FFFFFFFFULL
 
+/* Trampoline code address */
+#define MM_TRAMPOLINE_ADDRESS                      0x80000
+
 /* Page size enumeration list */
 typedef enum _PAGE_SIZE
 {

sdk/xtdk/i686/mmtypes.h

@@ -53,6 +53,8 @@
 /* Maximum physical address used by HAL allocations */
 #define MM_MAXIMUM_PHYSICAL_ADDRESS                0xFFFFFFFF
 
+/* Trampoline code address */
+#define MM_TRAMPOLINE_ADDRESS                      0x80000
 
 /* Page size enumeration list */
 typedef enum _PAGE_SIZE

xtldr/arch/amd64/memory.c

@@ -54,6 +54,15 @@ BlBuildPageMap(IN PXTBL_PAGE_MAPPING PageMap,
         return Status;
     }
 
+    /* Map the trampoline code area */
+    Status = BlMapVirtualMemory(PageMap, (PVOID)MM_TRAMPOLINE_ADDRESS,(PVOID)MM_TRAMPOLINE_ADDRESS,
+                                1, LoaderFirmwareTemporary);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Mapping trampoline code failed */
+        return Status;
+    }
+
     /* Get list of XTLDR modules */
     ModulesList = BlGetModulesList();
     ModulesListEntry = ModulesList->Flink;

xtldr/arch/i686/memory.c

@@ -90,6 +90,15 @@ BlBuildPageMap(IN PXTBL_PAGE_MAPPING PageMap,
         return Status;
     }
 
+    /* Map the trampoline code area */
+    Status = BlMapVirtualMemory(PageMap, (PVOID)MM_TRAMPOLINE_ADDRESS,(PVOID)MM_TRAMPOLINE_ADDRESS,
+                                1, LoaderFirmwareTemporary);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Mapping trampoline code failed */
+        return Status;
+    }
+
     /* Get list of XTLDR modules */
     ModulesList = BlGetModulesList();
     ModulesListEntry = ModulesList->Flink;