[Xen-devel] [PATCH v3 8/8] OvmfPkg: enable Xen specific path

[Wei Liu <wei.liu2@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
 OvmfPkg/OvmfPkgIa32.dsc             |    5 +++--
 OvmfPkg/OvmfPkgIa32X64.dsc          |    5 +++--
 OvmfPkg/OvmfPkgX64.dsc              |    5 +++--
 OvmfPkg/PlatformPei/Platform.c      |   11 +++++++++--
 OvmfPkg/PlatformPei/PlatformPei.inf |    1 +
 5 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index 760bd41..d4851ed 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -222,7 +222,7 @@
 !else
   DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
 !endif
-  PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+  PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
 
 [LibraryClasses.common.DXE_DRIVER]
@@ -320,6 +320,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64|0
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE
 
 
 
################################################################################
@@ -342,7 +343,7 @@
   MdeModulePkg/Core/Pei/PeiMain.inf
   MdeModulePkg/Universal/PCD/Pei/Pcd.inf  {
     <LibraryClasses>
-      PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+      PcdLib|MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
   }
   IntelFrameworkModulePkg/Universal/StatusCode/Pei/StatusCodePei.inf
   MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 268d722..d9072e7 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -227,7 +227,7 @@
 !else
   DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
 !endif
-  PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+  PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
 
 [LibraryClasses.common.DXE_DRIVER]
@@ -326,6 +326,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64|0
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE
 
 
 
################################################################################
@@ -348,7 +349,7 @@
   MdeModulePkg/Core/Pei/PeiMain.inf
   MdeModulePkg/Universal/PCD/Pei/Pcd.inf  {
     <LibraryClasses>
-      PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+      PcdLib|MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
   }
   IntelFrameworkModulePkg/Universal/StatusCode/Pei/StatusCodePei.inf
   MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 53945d0..71b178e 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -227,7 +227,7 @@
 !else
   DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
 !endif
-  PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+  PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
 
 [LibraryClasses.common.DXE_DRIVER]
@@ -325,6 +325,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64|0
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE
 
 
 
################################################################################
@@ -347,7 +348,7 @@
   MdeModulePkg/Core/Pei/PeiMain.inf
   MdeModulePkg/Universal/PCD/Pei/Pcd.inf  {
     <LibraryClasses>
-      PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+      PcdLib|MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
   }
   IntelFrameworkModulePkg/Universal/StatusCode/Pei/StatusCodePei.inf
   MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index c2e7ba9..8daf9f4 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -416,7 +416,11 @@ InitializePlatform (
 
   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"));
@@ -427,7 +431,10 @@ 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 3d5cbbb..7fe9d47 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]
-- 
1.7.10.4


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