OvmfPkg/PlatformPei: Add mXen boolean to indicate Xen is running

[mirror_edk2.git] / OvmfPkg / PlatformPei / Xen.c

diff --git a/OvmfPkg/PlatformPei/Xen.c b/OvmfPkg/PlatformPei/Xen.c
index 054cc4a16b449624c5cb98f5fb0813e2cf3d7749..0f75fa798320a4bdd8a81c38ca31d63e5678a1e3 100644 (file)
--- a/OvmfPkg/PlatformPei/Xen.c
+++ b/OvmfPkg/PlatformPei/Xen.c
@@ -1,7 +1,7 @@
 /**@file\r
   Xen Platform PEI support\r
 \r
-  Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
   Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>\r
 \r
   This program and the accompanying materials\r
@@ -29,9 +29,39 @@
 #include <Guid/XenInfo.h>\r
 \r
 #include "Platform.h"\r
+#include "Xen.h"\r
+\r
+BOOLEAN mXen = FALSE;\r
 \r
 EFI_XEN_INFO mXenInfo;\r
 \r
+/**\r
+  Returns E820 map provided by Xen\r
+\r
+  @param Entries      Pointer to E820 map\r
+  @param Count        Number of entries\r
+\r
+  @return EFI_STATUS\r
+**/\r
+EFI_STATUS\r
+XenGetE820Map (\r
+  EFI_E820_ENTRY64 **Entries,\r
+  UINT32 *Count\r
+  )\r
+{\r
+  EFI_XEN_OVMF_INFO *Info =\r
+    (EFI_XEN_OVMF_INFO *)(UINTN) OVMF_INFO_PHYSICAL_ADDRESS;\r
+\r
+  if (AsciiStrCmp ((CHAR8 *) Info->Signature, "XenHVMOVMF")) {\r
+    return EFI_NOT_FOUND;\r
+  }\r
+\r
+  ASSERT (Info->E820 < MAX_ADDRESS);\r
+  *Entries = (EFI_E820_ENTRY64 *)(UINTN) Info->E820;\r
+  *Count = Info->E820EntriesCount;\r
+\r
+  return EFI_SUCCESS;\r
+}\r
 \r
 /**\r
   Connects to the Hypervisor.\r
@@ -103,6 +133,7 @@ XenDetect (
     Signature[12] = '\0';\r
 \r
     if (!AsciiStrCmp ((CHAR8 *) Signature, "XenVMMXenVMM")) {\r
+      mXen = TRUE;\r
       return XenLeaf;\r
     }\r
   }\r