Adding support for BeagleBoard.

ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers.
EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell.
BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine).


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524

EmbeddedPkg/EblExternCmd/Main.c

@@ -0,0 +1,52 @@
+/** @file
+  Example of an external EBL command. It's loaded via EBL start command. 
+  Argc and Argv are passed in via "" of the EBL command line.
+
+  Start fs0:\EdkExternCmd.efi "Argv[0] Argv[1] 2"
+
+  will launch this command with 
+    Argv[0] = "Argv[0]"
+    Argv[1] = "Argv[2]"
+    Argv[2] = "3"
+
+  Copyright (c) 2007, Intel Corporation<BR>
+  Portions copyright (c) 2008-2009, Apple Inc. All rights reserved.
+
+  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.
+
+
+**/
+
+
+/**
+  Entry point with Argc, Argv. Put your code here.
+
+  @param  Argc   Number of command arguments in Argv
+  @param  Argv   Array of strings that represent the parsed command line. 
+                 Argv[0] is the comamnd name
+
+  @return EFI_SUCCESS
+
+**/
+EFI_STATUS
+EblMain (
+  IN UINTN  Argc,
+  IN CHAR8  **Argv
+  )
+{
+  UINTN   Index;
+
+  AsciiPrint ("Hello World\n");
+  for (Index = 0; Index < Argc; Index++) {
+    AsciiPrint ("Argv[%d] = %a\n", Index, Argv[Index]);
+  }
+  
+  return EFI_SUCCESS;
+}
+