1 files changed, 73 insertions, 0 deletions
diff --git a/ArmPkg/Library/BdsLib/BdsFilePathMem.c b/ArmPkg/Library/BdsLib/BdsFilePathMem.c
new file mode 100644
index 0000000000..dddaa3d670
--- /dev/null
+++ b/ArmPkg/Library/BdsLib/BdsFilePathMem.c
@@ -0,0 +1,73 @@
+/** @file
+*
+*  Copyright (c) 2011, ARM Limited. All rights reserved.
+*  
+*  This program and the accompanying materials                          
+*  are licensed and made available under the terms and conditions of the BSD License         
+*  which accompanies this distribution.  The full text of the license may be found at        
+*  http://opensource.org/licenses/bsd-license.php                                            
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+*
+**/
+
+#include "BdsInternal.h"
+
+
+EFI_STATUS BdsLoadFileFromMemMap (
+    IN  EFI_HANDLE                  Handle,
+    IN  EFI_DEVICE_PATH_PROTOCOL    *DevicePath,
+    OUT BDS_FILE                    *File
+) {
+    EFI_DEVICE_PATH_PROTOCOL            *LastDevicePath;
+
+    if ((File == NULL) || (DevicePath == NULL) || (IsDevicePathEnd (DevicePath))) {
+        return EFI_INVALID_PARAMETER;
+    }
+
+    // Check if the last node of the device Path is a Memory Map Device Node
+    LastDevicePath = DevicePath;
+    DevicePath = NextDevicePathNode(DevicePath);
+    while (!IsDevicePathEnd (DevicePath)) {
+        LastDevicePath = DevicePath;
+        DevicePath = NextDevicePathNode(DevicePath);
+    }
+    if ((LastDevicePath->Type != HARDWARE_DEVICE_PATH) || (LastDevicePath->SubType != HW_MEMMAP_DP)) {
+        return EFI_UNSUPPORTED;
+    }
+
+    File->Type = BDS_FILETYPE_MEM;
+    File->File.Mem.MemoryType = ((MEMMAP_DEVICE_PATH*)LastDevicePath)->MemoryType;
+    File->File.Mem.StartingAddress = ((MEMMAP_DEVICE_PATH*)LastDevicePath)->StartingAddress;
+    File->File.Mem.EndingAddress = ((MEMMAP_DEVICE_PATH*)LastDevicePath)->EndingAddress;
+
+    return EFI_SUCCESS;
+}
+
+EFI_STATUS BdsCopyRawFileToRuntimeMemoryMemMap(
+    IN  BDS_MEM_FILE        *MemFile,
+    OUT VOID                **FileImage,
+    OUT UINTN               *FileSize
+) {
+    UINTN           Size;
+    VOID*           Image;
+
+    Size = MemFile->EndingAddress - MemFile->StartingAddress;
+
+    if ((Size == 0) || (FileImage == NULL)) {
+        return EFI_INVALID_PARAMETER;
+    }
+    if (FileSize != NULL) {
+        *FileSize = Size;
+    }
+
+    Image = AllocateRuntimePool(Size);
+    if (Image == NULL) {
+        return EFI_OUT_OF_RESOURCES;
+    }
+
+    *FileImage = CopyMem(Image,(CONST VOID*)(UINTN)MemFile->StartingAddress,Size);
+
+    return EFI_SUCCESS;
+}