diff --git a/OvmfPkg/Microvm/MicrovmX64.dsc b/OvmfPkg/Microvm/MicrovmX64.dsc
index 646ce5f0d8..e90428ea76 100644
--- a/OvmfPkg/Microvm/MicrovmX64.dsc
+++ b/OvmfPkg/Microvm/MicrovmX64.dsc
@@ -443,9 +443,6 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutGopSupport|TRUE
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
-!ifdef $(CSM_ENABLE)
-  gUefiOvmfPkgTokenSpaceGuid.PcdCsmEnable|TRUE
-!endif
 
 [PcdsFixedAtBuild]
   gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeMemorySize|1
@@ -567,11 +564,7 @@
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Base|0x0
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size|0x0
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Base|0x0
-!ifdef $(CSM_ENABLE)
-  gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size|0x0
-!else
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size|0x800000000
-!endif
 
   gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|0
 
@@ -685,10 +678,6 @@
   MdeModulePkg/Universal/BdsDxe/BdsDxe.inf {
     <LibraryClasses>
       XenPlatformLib|OvmfPkg/Library/XenPlatformLib/XenPlatformLib.inf
-!ifdef $(CSM_ENABLE)
-      NULL|OvmfPkg/Csm/CsmSupportLib/CsmSupportLib.inf
-      NULL|OvmfPkg/Csm/LegacyBootManagerLib/LegacyBootManagerLib.inf
-!endif
   }
   MdeModulePkg/Logo/LogoDxe.inf
   MdeModulePkg/Application/UiApp/UiApp.inf {
@@ -696,10 +685,6 @@
       NULL|MdeModulePkg/Library/DeviceManagerUiLib/DeviceManagerUiLib.inf
       NULL|MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf
       NULL|MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerUiLib.inf
-!ifdef $(CSM_ENABLE)
-      NULL|OvmfPkg/Csm/LegacyBootManagerLib/LegacyBootManagerLib.inf
-      NULL|OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.inf
-!endif
   }
   OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.inf {
     <LibraryClasses>
@@ -753,9 +738,7 @@
   MdeModulePkg/Universal/DisplayEngineDxe/DisplayEngineDxe.inf
   MdeModulePkg/Universal/MemoryTest/NullMemoryTestDxe/NullMemoryTestDxe.inf
 
-!ifndef $(CSM_ENABLE)
   OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf
-!endif
   OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf
   OvmfPkg/VirtioGpuDxe/VirtioGpu.inf
 
@@ -812,15 +795,6 @@
   MdeModulePkg/Bus/Usb/UsbKbDxe/UsbKbDxe.inf
   MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
 
-!ifdef $(CSM_ENABLE)
-  OvmfPkg/Csm/BiosThunk/VideoDxe/VideoDxe.inf {
-    <LibraryClasses>
-      PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
-  }
-  OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
-  OvmfPkg/Csm/Csm16/Csm16.inf
-!endif
-
 !if $(TOOL_CHAIN_TAG) != "XCODE5"
   ShellPkg/DynamicCommand/TftpDynamicCommand/TftpDynamicCommand.inf {
     <PcdsFixedAtBuild>
diff --git a/OvmfPkg/Microvm/MicrovmX64.fdf b/OvmfPkg/Microvm/MicrovmX64.fdf
index 3182950277..660519a25a 100644
--- a/OvmfPkg/Microvm/MicrovmX64.fdf
+++ b/OvmfPkg/Microvm/MicrovmX64.fdf
@@ -319,13 +319,7 @@ INF  MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBusDxe.inf
 INF  MdeModulePkg/Bus/Usb/UsbKbDxe/UsbKbDxe.inf
 INF  MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
 
-!ifdef $(CSM_ENABLE)
-INF  OvmfPkg/Csm/BiosThunk/VideoDxe/VideoDxe.inf
-INF  OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
-INF  RuleOverride=CSM OvmfPkg/Csm/Csm16/Csm16.inf
-!else
 INF  OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf
-!endif
 
 INF  OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf
 INF  OvmfPkg/VirtioGpuDxe/VirtioGpu.inf