diff options
| -rw-r--r-- | MdeModulePkg/Application/VariableInfo/VariableInfo.c | 7 | ||||
| -rw-r--r-- | MdeModulePkg/Application/VariableInfo/VariableInfo.inf | 4 | ||||
| -rw-r--r-- | MdeModulePkg/MdeModulePkg.dec | 4 |
3 files changed, 13 insertions, 2 deletions
diff --git a/MdeModulePkg/Application/VariableInfo/VariableInfo.c b/MdeModulePkg/Application/VariableInfo/VariableInfo.c index ba4f553f49..ac92cc3b79 100644 --- a/MdeModulePkg/Application/VariableInfo/VariableInfo.c +++ b/MdeModulePkg/Application/VariableInfo/VariableInfo.c @@ -82,6 +82,13 @@ UefiMain ( VariableInfo = VariableInfo->Next;
} while (VariableInfo != NULL);
+ } else {
+ Print (L"Warning: Variable Dxe driver doesn't enable the feature of statistical information!\n");
+ Print (L"If you want to see this info, please:\n");
+ Print (L" 1. Set PcdVariableCollectStatistics as TRUE\n");
+ Print (L" 2. Rebuild Variable Dxe driver\n");
+ Print (L" 3. Run \"VariableInfo\" cmd again\n");
+
}
return Status;
diff --git a/MdeModulePkg/Application/VariableInfo/VariableInfo.inf b/MdeModulePkg/Application/VariableInfo/VariableInfo.inf index f963db5719..7cadb231ed 100644 --- a/MdeModulePkg/Application/VariableInfo/VariableInfo.inf +++ b/MdeModulePkg/Application/VariableInfo/VariableInfo.inf @@ -2,7 +2,9 @@ # Sample UEFI Application Reference Module.
# This is a shell application that will display statistical information about variable
# usage.
-#
+# Note that if Variable Dxe driver doesn't enable the feature by setting PcdVariableCollectStatistics
+# as TRUE, The application will not display variable statistical information.
+#
# Copyright (c) 2007 - 2008, Intel Corporation.
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec index 0c8de2b5ca..8fdf10d3b5 100644 --- a/MdeModulePkg/MdeModulePkg.dec +++ b/MdeModulePkg/MdeModulePkg.dec @@ -169,7 +169,9 @@ ## If TRUE, enable the statistic functionality about variable usage. Such information is
# stored as a vendor configuration table into the EFI system table.
- # If user wants to get variable usage info, this pcd should be set as TRUE.
+ # If user wants to use VariableInfo application in MdeModulePkg\Application directory to get
+ # variable usage info, this pcd should be set as TRUE. Otherwise VariableInfo application can
+ # not output useful info.
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics|FALSE|BOOLEAN|0x0001003f
## If TRUE, Unicode Collation Protocol will be installed.
|