Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu...@intel.com>
Cc: Dandan Bi <dandan...@intel.com>
---
 MdeModulePkg/MdeModulePkg.uni | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
index 1a5f24e..136eec9 100644
--- a/MdeModulePkg/MdeModulePkg.uni
+++ b/MdeModulePkg/MdeModulePkg.uni
@@ -997,3 +997,12 @@
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdMaxRepairCount_PROMPT  #language 
en-US "MAX repair count"
 
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdMaxRepairCount_HELP  #language 
en-US "This PCD defines the MAX repair count. The default value is 0 that means 
infinite.<BR>"
+
+#string 
STR_gEfiMdeModulePkgTokenSpaceGuid_PcdPciDegradeResourceForOptionRom_PROMPT  
#language en-US "Degrade 64-bit PCI MMIO BARs for legacy BIOS option ROMs"
+
+#string 
STR_gEfiMdeModulePkgTokenSpaceGuid_PcdPciDegradeResourceForOptionRom_HELP  
#language en-US "Indicates whether 64-bit PCI MMIO BARs should degrade to 
32-bit in the presence of an option ROM.<BR>"
+                                                                               
                    "On X64 platforms, Option ROMs may contain code that 
executes in the context of a legacy BIOS (CSM),"
+                                                                               
                    "which requires that all PCI MMIO BARs are located below 4 
GB.<BR>"
+                                                                               
                    "TRUE  - All PCI MMIO BARs of a device will be located 
below 4 GB if it has an option ROM.<BR>"
+                                                                               
                    "FALSE - PCI MMIO BARs of a device may be located above 4 
GB even if it has an option ROM.<BR>"
+
-- 
2.9.0.windows.1

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