[edk2-devel] [PATCH] SecurityPkg/SecureBootConfigDxe: Update UI according to UEFI spec

[Tan, Ming]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4713

In UEFI_Spec_2_10_Aug29.pdf page 1694 section 35.5.4 for
EFI_BROWSER_ACTION_FORM_OPEN:
NOTE: EFI_FORM_BROWSER2_PROTOCOL.BrowserCallback() cannot be used with
this browser action because question values have not been retrieved yet.

So should not call HiiGetBrowserData() and HiiSetBrowserData() in FORM_OPEN
call back function.

Now call SecureBootExtractConfigFromVariable() to save the change to EFI
variable, then HII use EFI variable to control the UI.

Cc: Min Xu <min.m...@intel.com>
Cc: Jiewen Yao <jiewen....@intel.com>
Signed-off-by: Ming Tan <ming....@intel.com>
---
 .../SecureBootConfigImpl.c                    | 21 ++++++++++---------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git 
a/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c 
b/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c
index 2c11129526..c7ddbbd9e9 100644
--- 
a/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c
+++ 
b/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c
@@ -3365,6 +3365,7 @@ SecureBootExtractConfigFromVariable (
   } else {
     ConfigData->FileEnrollType = UNKNOWN_FILE_TYPE;
   }
+  ConfigData->ListCount = Private->ListCount;
 
   //
   // If it is Physical Presence User, set the PhysicalPresent to true.
@@ -4547,6 +4548,7 @@ SecureBootCallback (
   SetupMode          = NULL;
   File               = NULL;
   EnrollKeyErrorCode = None_Error;
+  GetBrowserDataResult = FALSE;
 
   if ((This == NULL) || (Value == NULL) || (ActionRequest == NULL)) {
     return EFI_INVALID_PARAMETER;
@@ -4565,15 +4567,12 @@ SecureBootCallback (
     return EFI_OUT_OF_RESOURCES;
   }
 
-  GetBrowserDataResult = HiiGetBrowserData (&gSecureBootConfigFormSetGuid, 
mSecureBootStorageName, BufferSize, (UINT8 *)IfrNvData);
-
   if (Action == EFI_BROWSER_ACTION_FORM_OPEN) {
     if (QuestionId == KEY_SECURE_BOOT_MODE) {
       //
       // Update secure boot strings when opening this form
       //
       Status = UpdateSecureBootString (Private);
-      SecureBootExtractConfigFromVariable (Private, IfrNvData);
       mIsEnterSecureBootForm = TRUE;
     } else {
       //
@@ -4587,23 +4586,21 @@ SecureBootCallback (
           (QuestionId == KEY_SECURE_BOOT_DBT_OPTION))
       {
         CloseEnrolledFile (Private->FileContext);
-      } else if (QuestionId == KEY_SECURE_BOOT_DELETE_ALL_LIST) {
-        //
-        // Update ListCount field in varstore
-        // Button "Delete All Signature List" is
-        // enable when ListCount is greater than 0.
-        //
-        IfrNvData->ListCount = Private->ListCount;
       }
     }
 
     goto EXIT;
   }
 
+  GetBrowserDataResult = HiiGetBrowserData (&gSecureBootConfigFormSetGuid, 
mSecureBootStorageName, BufferSize, (UINT8 *)IfrNvData);
+
   if (Action == EFI_BROWSER_ACTION_RETRIEVE) {
     Status = EFI_UNSUPPORTED;
     if (QuestionId == KEY_SECURE_BOOT_MODE) {
       if (mIsEnterSecureBootForm) {
+        if (GetBrowserDataResult) {
+          SecureBootExtractConfigFromVariable (Private, IfrNvData);
+        }
         Value->u8 = SECURE_BOOT_MODE_STANDARD;
         Status    = EFI_SUCCESS;
       }
@@ -5179,6 +5176,10 @@ SecureBootCallback (
     }
   }
 
+  if (GetBrowserDataResult) {
+    SecureBootExtractConfigFromVariable (Private, IfrNvData);
+  }
+
 EXIT:
 
   if (!EFI_ERROR (Status) && GetBrowserDataResult) {
-- 
2.31.1.windows.1



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