This patch parallels commit b963ec494c48 ("OvmfPkg:
QemuFlashFvbServicesRuntimeDxe: adhere to -D SMM_REQUIRE", 2015-11-30) in
that if QemuFlashDetected() fails -- because flash is not found --, not
only SMM_REQUIRE=TRUE is a wrong build to execute, but
MEM_VARSTORE_EMU_ENABLE=FALSE as well.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
 OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf | 1 +
 OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesSmm.inf        | 1 +
 OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.c               | 1 +
 3 files changed, 3 insertions(+)

diff --git a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf
index c0dda75bf75f..cf30d5c8f021 100644
--- a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf
+++ b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf
@@ -87,6 +87,7 @@ [Pcd]
 
 [FeaturePcd]
   gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
+  gUefiOvmfPkgTokenSpaceGuid.PcdMemVarstoreEmuEnable
 
 [Depex]
   TRUE
diff --git a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesSmm.inf b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesSmm.inf
index ba2d3679a46d..d5aa393dbc0b 100644
--- a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesSmm.inf
+++ b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesSmm.inf
@@ -86,6 +86,7 @@ [Pcd]
 
 [FeaturePcd]
   gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
+  gUefiOvmfPkgTokenSpaceGuid.PcdMemVarstoreEmuEnable
 
 [Depex]
   TRUE
diff --git a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.c b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.c
index 5677b5ee119c..60bc7a84bd6b 100644
--- a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.c
+++ b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.c
@@ -246,6 +246,7 @@ QemuFlashInitialize (
 
   if (!QemuFlashDetected ()) {
     ASSERT (!FeaturePcdGet (PcdSmmSmramRequire));
+    ASSERT (FeaturePcdGet (PcdMemVarstoreEmuEnable));
     return EFI_WRITE_PROTECTED;
   }
 
-- 
2.9.3


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