IntelFrameworkModule/ThunkKb: ReadKeyStrokeEx always return key state
authorRuiyu Ni <ruiyu.ni@intel.com>
Fri, 19 Jan 2018 07:59:38 +0000 (15:59 +0800)
committerRuiyu Ni <ruiyu.ni@intel.com>
Thu, 1 Feb 2018 06:04:12 +0000 (14:04 +0800)
Today's implementation only return key state when there is a key.
But when user doesn't press any key, the key state cannot be
returned.

The patch changes the ReadKeyStrokeEx() to always return the
key state even there is no key pressed.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.h

index ec525891dc7a5659af89d1151a008ee1cc84fd4f..ac8e2364c8f48319aa0f782695e894a0db672ee3 100644 (file)
@@ -1,7 +1,7 @@
 /** @file\r
   ConsoleOut Routines that speak VGA.\r
 \r
-Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
 \r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions\r
@@ -269,7 +269,9 @@ BiosKeyboardDriverBindingStart (
   BiosKeyboardPrivate->StatusRegisterAddress      = KEYBOARD_8042_STATUS_REGISTER;\r
   BiosKeyboardPrivate->CommandRegisterAddress     = KEYBOARD_8042_COMMAND_REGISTER;\r
   BiosKeyboardPrivate->ExtendedKeyboard           = TRUE;\r
-  \r
+\r
+  BiosKeyboardPrivate->KeyState.KeyShiftState     = 0;\r
+  BiosKeyboardPrivate->KeyState.KeyToggleState    = 0;\r
   BiosKeyboardPrivate->Queue.Front                = 0;\r
   BiosKeyboardPrivate->Queue.Rear                 = 0;\r
   BiosKeyboardPrivate->QueueForNotify.Front       = 0;\r
@@ -978,6 +980,8 @@ KeyboardReadKeyStrokeWorker (
   //\r
   Status = CheckQueue (&BiosKeyboardPrivate->Queue);\r
   if (EFI_ERROR (Status)) {\r
+    ZeroMem (&KeyData->Key, sizeof (KeyData->Key));\r
+    CopyMem (&KeyData->KeyState, &BiosKeyboardPrivate->KeyState, sizeof (EFI_KEY_STATE));\r
     gBS->RestoreTPL (OldTpl);\r
     return EFI_NOT_READY;\r
   }\r
@@ -1986,6 +1990,12 @@ BiosKeyboardTimerHandler (
   }\r
 \r
   Enqueue (&BiosKeyboardPrivate->Queue, &KeyData);\r
+\r
+  //\r
+  // Save the current key state\r
+  //\r
+  CopyMem (&BiosKeyboardPrivate->KeyState, &KeyData.KeyState, sizeof (EFI_KEY_STATE));\r
+\r
   //\r
   // Leave critical section and return\r
   //\r
index c64ec0095e81fcab270bee991259158e33b9cf92..5300eaa0ab32e8a682b8c49fa6279fbad2cd4750 100644 (file)
@@ -1,6 +1,6 @@
 /** @file\r
 \r
-Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
 \r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions\r
@@ -220,7 +220,8 @@ typedef struct {
   UINT16                                      StatusRegisterAddress;\r
   UINT16                                      CommandRegisterAddress;\r
   BOOLEAN                                     ExtendedKeyboard;\r
-  \r
+\r
+  EFI_KEY_STATE                               KeyState;\r
   //\r
   // Buffer storing EFI_KEY_DATA\r
   //\r