Sync up ArmPkg with patch from mailing list. Changed name of BdsLib.h to BdsUnixLib.h and fixed a lot of issues with Xcode building.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11293 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Library/BdsLib/BdsFilePath.c

@@ -0,0 +1,182 @@
+/** @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"
+
+// Count the number of DevicePath Node
+static UINTN NumberNodeFromDevicePath(
+    IN  EFI_DEVICE_PATH_PROTOCOL* DevicePath
+) {
+    UINTN NumberDevicePathNode = 0;
+
+    while (!IsDevicePathEnd (DevicePath)) {
+        NumberDevicePathNode++;
+        DevicePath = NextDevicePathNode(DevicePath);
+    }
+    return NumberDevicePathNode;
+}
+
+// Extract the FilePath from the Device Path
+CHAR16* BdsExtractFilePathFromDevicePath(
+    IN  CONST CHAR16    *StrDevicePath,
+    IN  UINTN           NumberDevicePathNode
+) {
+    UINTN       Node;
+    CHAR16      *Str;
+
+    Str = (CHAR16*)StrDevicePath;
+    Node = 0;
+    while ((Str != NULL) && (*Str != L'\0') && (Node < NumberDevicePathNode)) {
+        if ((*Str == L'/') || (*Str == L'\\')) {
+            Node++;
+        }
+        Str++;
+    }
+
+    if (*Str == L'\0') {
+        return NULL;
+    } else {
+        return Str;
+    }
+}
+
+EFI_STATUS
+BdsLoadDevicePath(
+    IN  EFI_DEVICE_PATH_PROTOCOL* DevicePath,
+    OUT EFI_HANDLE                *Handle
+) {
+    EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath;
+    EFI_STATUS                  Status;
+
+    if ((DevicePath == NULL) || (Handle == NULL)) {
+        return EFI_INVALID_PARAMETER;
+    }
+
+    do {
+        RemainingDevicePath = DevicePath;
+        // The LocateDevicePath() function locates all devices on DevicePath that support Protocol and returns
+        // the handle to the device that is closest to DevicePath. On output, the device path pointer is modified
+        // to point to the remaining part of the device path
+        Status = gBS->LocateDevicePath(&gEfiDevicePathProtocolGuid,&RemainingDevicePath,Handle);
+        if (!EFI_ERROR (Status)) {
+            // Recursive = FALSE: We do not want to start all the device tree
+            Status = gBS->ConnectController (*Handle, NULL, RemainingDevicePath, FALSE);
+        }
+
+        // We need to check if RemainingDevicePath does not point on the last node. Otherwise, calling
+        // NextDevicePathNode() will return an undetermined Device Path Node
+        if (!IsDevicePathEnd (RemainingDevicePath)) {
+            RemainingDevicePath = NextDevicePathNode (RemainingDevicePath);
+        }
+    } while (!EFI_ERROR (Status) && !IsDevicePathEnd (RemainingDevicePath));
+
+    if (!EFI_ERROR (Status)) {
+        // Now, we have got the whole Device Path connected, call again ConnectController to ensure all the supported Driver
+        // Binding Protocol are connected (such as DiskIo and SimpleFileSystem)
+        RemainingDevicePath = DevicePath;
+        Status = gBS->LocateDevicePath(&gEfiDevicePathProtocolGuid,&RemainingDevicePath,Handle);
+        if (!EFI_ERROR (Status)) {
+            Status = gBS->ConnectController (*Handle, NULL, RemainingDevicePath, FALSE);
+            if (EFI_ERROR (Status)) {
+                // If the last node is a Memory Map Device Path just return EFI_SUCCESS.
+                if ((RemainingDevicePath->Type == HARDWARE_DEVICE_PATH) && (RemainingDevicePath->SubType == HW_MEMMAP_DP)) {
+                    Status = EFI_SUCCESS;
+                }
+            }
+        }
+    } else if (IsDevicePathEnd (RemainingDevicePath)) {
+        // Case when the DevicePath contains a MemoryMap Device Path Node and all drivers are connected.
+        // Ensure the Device Path exists
+        RemainingDevicePath = DevicePath;
+        Status = gBS->LocateDevicePath(&gEfiDevicePathProtocolGuid,&RemainingDevicePath,Handle);
+    }
+
+    return Status;
+}
+
+
+EFI_STATUS
+BdsLoadFilePath (
+    IN  CONST CHAR16        *DeviceFilePath,
+    OUT BDS_FILE            *File
+) {
+    EFI_DEVICE_PATH_PROTOCOL            *DevicePath;
+    EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL  *EfiDevicePathFromTextProtocol;
+    EFI_STATUS Status;
+    EFI_HANDLE Handle;
+    UINTN                               NumberDevicePathNode;
+    CHAR16                              *FilePath;
+
+    //Do a sanity check on the Device file path
+    if (DeviceFilePath == NULL) {
+        return EFI_INVALID_PARAMETER;
+    }
+
+    //  Convert the Device Path String into Device Path Protocol
+    Status = gBS->LocateProtocol(&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);
+    ASSERT_EFI_ERROR(Status);
+    DevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath(DeviceFilePath);
+
+    //Do a sanity check on the Device Path
+    if (DevicePath == NULL) {
+        return EFI_INVALID_PARAMETER;
+    }
+
+    // Count the number of DevicePath Node
+    NumberDevicePathNode = NumberNodeFromDevicePath(DevicePath);
+    // Extract the FilePath from the Device Path
+    FilePath = BdsExtractFilePathFromDevicePath(DeviceFilePath,NumberDevicePathNode);
+
+    Status = BdsLoadDevicePath(DevicePath,&Handle);
+    if (EFI_ERROR (Status)) {
+        return Status;
+    }
+
+    //If FilePath == NULL then let consider if a MemoryMap Device Path
+    if (FilePath == NULL) {
+        // Check if the Node is a MemoryMap Device Path
+        Status = BdsLoadFileFromMemMap(Handle,DevicePath,File);
+    } else {
+        Status = BdsLoadFileFromSimpleFileSystem(Handle,FilePath,File);
+        if (EFI_ERROR (Status)) {
+            Status = BdsLoadFileFromFirmwareVolume(Handle,FilePath,EFI_FV_FILETYPE_ALL,File);
+        }
+    }
+
+    if (!EFI_ERROR (Status)) {
+        File->DevicePath = DevicePath;
+    }
+
+    return Status;
+}
+
+EFI_STATUS BdsCopyRawFileToRuntimeMemory(
+    IN  BDS_FILE            *File,
+    OUT VOID                **FileImage,
+    OUT UINTN               *FileSize
+) {
+    if (File == NULL) {
+        return EFI_INVALID_PARAMETER;
+    }
+
+    if (File->Type == BDS_FILETYPE_FS) {
+        return BdsCopyRawFileToRuntimeMemoryFS(File->File.Fs.Handle,FileImage,FileSize);
+    } else if (File->Type == BDS_FILETYPE_FV) {
+        return BdsCopyRawFileToRuntimeMemoryFV(&(File->File.Fv),FileImage,FileSize);
+    } else if (File->Type == BDS_FILETYPE_MEM) {
+        return BdsCopyRawFileToRuntimeMemoryMemMap(&(File->File.Mem),FileImage,FileSize);
+    } else {
+        return EFI_INVALID_PARAMETER;
+    }
+}