From 447d264115c476142f884af0be287622cd244423 Mon Sep 17 00:00:00 2001
From: Wei Liu <wei.liu2@citrix.com>
Date: Sun, 8 Dec 2013 01:36:25 +0000
Subject: OvmfPkg: enable Xen specific path

This patch sets PcdPciDisableBusEnumeration to true then makes use of
PublishPeiMemory and XenMemMapInitialization to construct memory map for
Xen guest.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14946 6f19259b-4bc3-4df7-8a09-765794883524
---
 OvmfPkg/PlatformPei/Platform.c      | 15 +++++++++++++--
 OvmfPkg/PlatformPei/PlatformPei.inf |  1 +
 2 files changed, 14 insertions(+), 2 deletions(-)

(limited to 'OvmfPkg/PlatformPei')

diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 3dc30973fc..7363702bee 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -412,13 +412,20 @@ InitializePlatform (
   EFI_PHYSICAL_ADDRESS  TopOfMemory;
   UINT32 XenLeaf;
 
+  TopOfMemory = 0;
+
   DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));
 
   DebugDumpCmos ();
 
   XenLeaf = XenDetect ();
 
-  TopOfMemory = MemDetect ();
+  if (XenLeaf != 0) {
+    PublishPeiMemory ();
+    PcdSetBool (PcdPciDisableBusEnumeration, TRUE);
+  } else {
+    TopOfMemory = MemDetect ();
+  }
 
   if (XenLeaf != 0) {
     DEBUG ((EFI_D_INFO, "Xen was detected\n"));
@@ -429,7 +436,11 @@ InitializePlatform (
 
   PeiFvInitialization ();
 
-  MemMapInitialization (TopOfMemory);
+  if (XenLeaf != 0) {
+    XenMemMapInitialization ();
+  } else {
+    MemMapInitialization (TopOfMemory);
+  }
 
   MiscInitialization ();
 
diff --git a/OvmfPkg/PlatformPei/PlatformPei.inf b/OvmfPkg/PlatformPei/PlatformPei.inf
index 3d5cbbbc2b..7fe9d471cb 100644
--- a/OvmfPkg/PlatformPei/PlatformPei.inf
+++ b/OvmfPkg/PlatformPei/PlatformPei.inf
@@ -65,6 +65,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize
   gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved
+  gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration
   gUefiCpuPkgTokenSpaceGuid.PcdCpuLocalApicBaseAddress
 
 [Ppis]
-- 
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