X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OvmfPkg%2FPlatformPei%2FPlatform.c;h=0876316eefbc7643aade7f8b1028a3ddd7e87fb9;hp=9c013613a1a0b35517bd5b7da039a5ede5c304b8;hb=d4534984111328ff839fbf51be2779a98bfefa30;hpb=9a2e8d7c65ef7f39c6754d27e52954b616bc6628

diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 9c013613a1..0876316eef 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -181,7 +181,6 @@ MemMapInitialization (
 
     TopOfLowRam = GetSystemMemorySizeBelow4gb ();
     PciExBarBase = 0;
-    PciBase = (TopOfLowRam < BASE_2GB) ? BASE_2GB : TopOfLowRam;
     if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {
       //
       // The MMCONFIG area is expected to fall between the top of low RAM and
@@ -191,9 +190,8 @@ MemMapInitialization (
       ASSERT (TopOfLowRam <= PciExBarBase);
       ASSERT (PciExBarBase <= MAX_UINT32 - SIZE_256MB);
       PciBase = (UINT32)(PciExBarBase + SIZE_256MB);
-      PciSize = 0xFC000000 - PciBase;
     } else {
-      PciSize = 0xFC000000 - PciBase;
+      PciBase = (TopOfLowRam < BASE_2GB) ? BASE_2GB : TopOfLowRam;
     }
 
     //
@@ -209,6 +207,7 @@ MemMapInitialization (
     // 0xFED20000    gap                          896 KB
     // 0xFEE00000    LAPIC                          1 MB
     //
+    PciSize = 0xFC000000 - PciBase;
     AddIoMemoryBaseSizeHob (PciBase, PciSize);
     PcdStatus = PcdSet64S (PcdPciMmio32Base, PciBase);
     ASSERT_RETURN_ERROR (PcdStatus);