refine module description for BdsDxe module.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7063 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf b/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
index 8dcf9030c08576048c8e9df9dd9695559841f732..c8136db4fc204b31e528a9d462e592a92115a925 100644 (file)
--- a/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
+++ b/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
@@ -1,6 +1,18 @@
 #/** @file\r
-#  \r
-#    Component discription file for Bds module\r
+#\r
+#  BDSDxe module is core driver for BDS phase. \r
+#  When DxeCore dispatching all DXE driver, this module will produce architecture protocol \r
+#  gEfiBdsArchProtocolGuid. After DxeCore finish dispatching, DxeCore will invoke Entry\r
+#  interface of protocol gEfiBdsArchProtocolGuid, then BDS phase is entered.\r
+#\r
+#  Generally, this module take reposiblity to connect all necessary devices for platform boot, \r
+#  these boot device path  are hold in PlatformBdsLib library instance produced by platform.\r
+#  For legacy boot, BDS will transfer control to legacy BIOS after legacy boot device is select.\r
+#  For EFI boot, BDS will load boot loader file EFI\BOOT\BOOTIA32.EFI, EFI\BOOT\BOOTX64.EFI, \r
+#  EFI\BOOT\BOOTIA64.EFI file from selected boot device and transfer control to boot loader.\r
+#\r
+#  BDSDxe also maintain the UI for "Boot Manager, Boot Maintaince Manager, Device Manager" which\r
+#  is used for user to configure boot option or maintain hardware device.\r
 #  \r
 #  Copyright (c) 2008, Intel Corporation. <BR>\r
 #  All rights reserved. This program and the accompanying materials\r
@@ -119,7 +131,7 @@
   gEfiHiiStringProtocolGuid                     # PROTOCOL ALWAYS_CONSUMED\r
   gEfiSimpleFileSystemProtocolGuid              # PROTOCOL ALWAYS_CONSUMED\r
   gEfiLoadFileProtocolGuid                      # PROTOCOL ALWAYS_CONSUMED\r
-  gEfiBdsArchProtocolGuid                       # PROTOCOL ALWAYS_CONSUMED\r
+  gEfiBdsArchProtocolGuid                       # PROTOCOL ALWAYS_PRODUCED\r
   gEfiDataHubProtocolGuid                       # PROTOCOL ALWAYS_CONSUMED\r
   gEfiGenericMemTestProtocolGuid                # PROTOCOL ALWAYS_CONSUMED\r
   gEfiLegacyBiosProtocolGuid                    # PROTOCOL ALWAYS_CONSUMED\r