OvmfPkg: AcpiPlatformDxe: enable PCI IO and MMIO while fetching QEMU tables

[mirror_edk2.git] / OvmfPkg / AcpiPlatformDxe / QemuFwCfgAcpi.c

diff --git a/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c
index 81620448a046364149e9dbaf5018c2327438cfa3..faaff3757cdb69bf76fb35b7c301acf4f5a8acd2 100644 (file)
--- a/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c
+++ b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c
@@ -561,6 +561,8 @@ InstallQemuFwCfgTables (
   UINTN                    FwCfgSize;\r
   QEMU_LOADER_ENTRY        *LoaderStart;\r
   CONST QEMU_LOADER_ENTRY  *LoaderEntry, *LoaderEnd;\r
+  ORIGINAL_ATTRIBUTES      *OriginalPciAttributes;\r
+  UINTN                    OriginalPciAttributesCount;\r
   ORDERED_COLLECTION       *Tracker;\r
   UINTN                    *InstalledKey;\r
   INT32                    Installed;\r
@@ -580,8 +582,10 @@ InstallQemuFwCfgTables (
   if (LoaderStart == NULL) {\r
     return EFI_OUT_OF_RESOURCES;\r
   }\r
+  EnablePciDecoding (&OriginalPciAttributes, &OriginalPciAttributesCount);\r
   QemuFwCfgSelectItem (FwCfgItem);\r
   QemuFwCfgReadBytes (FwCfgSize, LoaderStart);\r
+  RestorePciDecoding (OriginalPciAttributes, OriginalPciAttributesCount);\r
   LoaderEnd = LoaderStart + FwCfgSize / sizeof *LoaderEntry;\r
 \r
   Tracker = OrderedCollectionInit (BlobCompare, BlobKeyCompare);\r