ArmPlatformPkg/Bds: Fix various bugs in the new BDS

The errors were:
- uncaught returned error
- used of uninitialized variables


ArmPlatformPkg/Bds: Implement the update of MemMap Boot Device



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11830 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Include/Library/BdsLib.h

@@ -15,6 +15,25 @@
 #ifndef __BDS_ENTRY_H__
 #define __BDS_ENTRY_H__
 
+/**
+  Connect a Device Path and return the handle of the driver that support this DevicePath
+
+  @param  DevicePath            Device Path of the File to connect
+  @param  Handle                Handle of the driver that support this DevicePath
+  @param  RemainingDevicePath   Remaining DevicePath nodes that do not match the driver DevicePath
+
+  @retval EFI_SUCCESS           A driver that matches the Device Path has been found
+  @retval EFI_NOT_FOUND         No handles match the search.
+  @retval EFI_INVALID_PARAMETER DevicePath or Handle is NULL
+
+**/
+EFI_STATUS
+BdsConnectDevicePath (
+  IN  EFI_DEVICE_PATH_PROTOCOL* DevicePath,
+  OUT EFI_HANDLE                *Handle,
+  OUT EFI_DEVICE_PATH_PROTOCOL  **RemainingDevicePath
+  );
+
 /**
   Connect all DXE drivers
 
@@ -32,7 +51,7 @@ BdsConnectAllDrivers (
   Start a Linux kernel from a Device Path
 
   @param  LinuxKernel           Device Path to the Linux Kernel
-  @param  Parameters            Linux kernel agruments
+  @param  Parameters            Linux kernel arguments
   @param  Fdt                   Device Path to the Flat Device Tree
 
   @retval EFI_SUCCESS           All drivers have been connected
@@ -47,6 +66,23 @@ BdsBootLinux (
   IN  EFI_DEVICE_PATH_PROTOCOL* FdtDevicePath
   );
 
+/**
+  Start an EFI Application from a Device Path
+
+  @param  ParentImageHandle     Handle of the calling image
+  @param  DevicePath            Location of the EFI Application
+
+  @retval EFI_SUCCESS           All drivers have been connected
+  @retval EFI_NOT_FOUND         The Linux kernel Device Path has not been found
+  @retval EFI_OUT_OF_RESOURCES  There is not enough resource memory to store the matching results.
+
+**/
+EFI_STATUS
+BdsStartEfiApplication (
+  IN EFI_HANDLE                  ParentImageHandle,
+  IN EFI_DEVICE_PATH_PROTOCOL    *DevicePath
+  );
+
 /**
   Start an EFI Application from any Firmware Volume