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-rw-r--r--MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c6
-rw-r--r--MdeModulePkg/Universal/SetupBrowserDxe/Setup.h4
2 files changed, 8 insertions, 2 deletions
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c b/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
index 1c3ab2bedc..11839ad6ce 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
@@ -1625,8 +1625,14 @@ ParseOpCodes (
// Create a EFI variable Storage for this FormSet
//
if (OpCodeLength < sizeof (EFI_IFR_VARSTORE_EFI)) {
+ //
+ // Create efi varstore with format follow UEFI spec before 2.3.1.
+ //
Storage = CreateStorage (FormSet, EFI_HII_VARSTORE_EFI_VARIABLE, OpCodeData);
} else {
+ //
+ // Create efi varstore with format follow UEFI spec 2.3.1 and later.
+ //
Storage = CreateStorage (FormSet, EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER, OpCodeData);
}
CopyMem (&Storage->VarStoreId, &((EFI_IFR_VARSTORE_EFI *) OpCodeData)->VarStoreId, sizeof (EFI_VARSTORE_ID));
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h b/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h
index 030cf32eac..e5f9d18b5b 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h
@@ -109,8 +109,8 @@ typedef struct {
#define EFI_HII_VARSTORE_BUFFER 0
#define EFI_HII_VARSTORE_NAME_VALUE 1
-#define EFI_HII_VARSTORE_EFI_VARIABLE 2
-#define EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER 3
+#define EFI_HII_VARSTORE_EFI_VARIABLE 2 // EFI Varstore type follow UEFI spec before 2.3.1.
+#define EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER 3 // EFI varstore type follow UEFI spec 2.3.1 and later.
#define FORM_INCONSISTENT_VALIDATION 0
#define FORM_NO_SUBMIT_VALIDATION 1