OvmfPkg/PlatformBds: Implement PlatformBootManagerUnableToBoot

[mirror_edk2.git] / OvmfPkg / Library / PlatformBootManagerLib / BdsPlatform.c

diff --git a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
index 57870cb856e51a722bcc19984f548810d43c1465..b2faa797c61bab7267992f08d06789b9a6f3dcc5 100644 (file)
--- a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
+++ b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
@@ -1,7 +1,7 @@
 /** @file\r
   Platform BDS customizations.\r
 \r
-  Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>\r
+  Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r
   This program and the accompanying materials are licensed and made available\r
   under the terms and conditions of the BSD License which accompanies this\r
   distribution.  The full text of the license may be found at\r
@@ -1676,3 +1676,62 @@ PlatformBootManagerWaitCallback (
     );\r
 }\r
 \r
+/**\r
+  The function is called when no boot option could be launched,\r
+  including platform recovery options and options pointing to applications\r
+  built into firmware volumes.\r
+\r
+  If this function returns, BDS attempts to enter an infinite loop.\r
+**/\r
+VOID\r
+EFIAPI\r
+PlatformBootManagerUnableToBoot (\r
+  VOID\r
+  )\r
+{\r
+  EFI_STATUS                   Status;\r
+  EFI_INPUT_KEY                Key;\r
+  EFI_BOOT_MANAGER_LOAD_OPTION BootManagerMenu;\r
+  UINTN                        Index;\r
+\r
+  //\r
+  // BootManagerMenu doesn't contain the correct information when return status\r
+  // is EFI_NOT_FOUND.\r
+  //\r
+  Status = EfiBootManagerGetBootManagerMenu (&BootManagerMenu);\r
+  if (EFI_ERROR (Status)) {\r
+    return;\r
+  }\r
+  //\r
+  // Normally BdsDxe does not print anything to the system console, but this is\r
+  // a last resort -- the end-user will likely not see any DEBUG messages\r
+  // logged in this situation.\r
+  //\r
+  // AsciiPrint() will NULL-check gST->ConOut internally. We check gST->ConIn\r
+  // here to see if it makes sense to request and wait for a keypress.\r
+  //\r
+  if (gST->ConIn != NULL) {\r
+    AsciiPrint (\r
+      "%a: No bootable option or device was found.\n"\r
+      "%a: Press any key to enter the Boot Manager Menu.\n",\r
+      gEfiCallerBaseName,\r
+      gEfiCallerBaseName\r
+      );\r
+    Status = gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &Index);\r
+    ASSERT_EFI_ERROR (Status);\r
+    ASSERT (Index == 0);\r
+\r
+    //\r
+    // Drain any queued keys.\r
+    //\r
+    while (!EFI_ERROR (gST->ConIn->ReadKeyStroke (gST->ConIn, &Key))) {\r
+      //\r
+      // just throw away Key\r
+      //\r
+    }\r
+  }\r
+\r
+  for (;;) {\r
+    EfiBootManagerBoot (&BootManagerMenu);\r
+  }\r
+}\r