--- /dev/null
+/** @file\r
+ Routines implements SIMPLE_TEXT_IN protocol's interfaces based on 8042 interfaces\r
+ provided by Ps2KbdCtrller.c.\r
+\r
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution. The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+\r
+#include "Ps2Keyboard.h"\r
+\r
+/**\r
+ Check whether the EFI key buffer is empty.\r
+\r
+ @param Queue Pointer to instance of EFI_KEY_QUEUE.\r
+\r
+ @retval TRUE The EFI key buffer is empty.\r
+ @retval FALSE The EFI key buffer isn't empty.\r
+**/\r
+BOOLEAN\r
+IsEfikeyBufEmpty (\r
+ IN EFI_KEY_QUEUE *Queue\r
+ )\r
+{\r
+ return (BOOLEAN) (Queue->Head == Queue->Tail);\r
+}\r
+\r
+/**\r
+ Read & remove one key data from the EFI key buffer.\r
+\r
+ @param Queue Pointer to instance of EFI_KEY_QUEUE.\r
+ @param KeyData Receive the key data.\r
+\r
+ @retval EFI_SUCCESS The key data is popped successfully.\r
+ @retval EFI_NOT_READY There is no key data available.\r
+**/\r
+EFI_STATUS\r
+PopEfikeyBufHead (\r
+ IN EFI_KEY_QUEUE *Queue,\r
+ OUT EFI_KEY_DATA *KeyData OPTIONAL\r
+ )\r
+{\r
+ if (IsEfikeyBufEmpty (Queue)) {\r
+ return EFI_NOT_READY;\r
+ }\r
+ //\r
+ // Retrieve and remove the values\r
+ //\r
+ if (KeyData != NULL) {\r
+ CopyMem (KeyData, &Queue->Buffer[Queue->Head], sizeof (EFI_KEY_DATA));\r
+ }\r
+ Queue->Head = (Queue->Head + 1) % KEYBOARD_EFI_KEY_MAX_COUNT;\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Push one key data to the EFI key buffer.\r
+\r
+ @param Queue Pointer to instance of EFI_KEY_QUEUE.\r
+ @param KeyData The key data to push.\r
+**/\r
+VOID\r
+PushEfikeyBufTail (\r
+ IN EFI_KEY_QUEUE *Queue,\r
+ IN EFI_KEY_DATA *KeyData\r
+ )\r
+{\r
+ if ((Queue->Tail + 1) % KEYBOARD_EFI_KEY_MAX_COUNT == Queue->Head) {\r
+ //\r
+ // If Queue is full, pop the one from head.\r
+ //\r
+ PopEfikeyBufHead (Queue, NULL);\r
+ }\r
+ CopyMem (&Queue->Buffer[Queue->Tail], KeyData, sizeof (EFI_KEY_DATA));\r
+ Queue->Tail = (Queue->Tail + 1) % KEYBOARD_EFI_KEY_MAX_COUNT;\r
+}\r
+\r
+/**\r
+ Judge whether is a registed key\r
+\r
+ @param RegsiteredData A pointer to a buffer that is filled in with the keystroke\r
+ state data for the key that was registered.\r
+ @param InputData A pointer to a buffer that is filled in with the keystroke\r
+ state data for the key that was pressed.\r
+\r
+ @retval TRUE Key be pressed matches a registered key.\r
+ @retval FLASE Match failed.\r
+\r
+**/\r
+BOOLEAN\r
+IsKeyRegistered (\r
+ IN EFI_KEY_DATA *RegsiteredData,\r
+ IN EFI_KEY_DATA *InputData\r
+ )\r
+\r
+{\r
+ ASSERT (RegsiteredData != NULL && InputData != NULL);\r
+\r
+ if ((RegsiteredData->Key.ScanCode != InputData->Key.ScanCode) ||\r
+ (RegsiteredData->Key.UnicodeChar != InputData->Key.UnicodeChar)) {\r
+ return FALSE;\r
+ }\r
+\r
+ //\r
+ // Assume KeyShiftState/KeyToggleState = 0 in Registered key data means these state could be ignored.\r
+ //\r
+ if (RegsiteredData->KeyState.KeyShiftState != 0 &&\r
+ RegsiteredData->KeyState.KeyShiftState != InputData->KeyState.KeyShiftState) {\r
+ return FALSE;\r
+ }\r
+ if (RegsiteredData->KeyState.KeyToggleState != 0 &&\r
+ RegsiteredData->KeyState.KeyToggleState != InputData->KeyState.KeyToggleState) {\r
+ return FALSE;\r
+ }\r
+\r
+ return TRUE;\r
+\r
+}\r
+\r
+/**\r
+ Reads the next keystroke from the input device. The WaitForKey Event can\r
+ be used to test for existance of a keystroke via WaitForEvent () call.\r
+\r
+ @param ConsoleInDev Ps2 Keyboard private structure\r
+ @param KeyData A pointer to a buffer that is filled in with the keystroke\r
+ state data for the key that was pressed.\r
+\r
+\r
+ @retval EFI_SUCCESS The keystroke information was returned.\r
+ @retval EFI_NOT_READY There was no keystroke data availiable.\r
+ @retval EFI_DEVICE_ERROR The keystroke information was not returned due to\r
+ hardware errors.\r
+ @retval EFI_INVALID_PARAMETER KeyData is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+KeyboardReadKeyStrokeWorker (\r
+ IN KEYBOARD_CONSOLE_IN_DEV *ConsoleInDev,\r
+ OUT EFI_KEY_DATA *KeyData\r
+ )\r
+\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_TPL OldTpl;\r
+\r
+ if (KeyData == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ KeyboardTimerHandler (NULL, ConsoleInDev);\r
+\r
+ if (ConsoleInDev->KeyboardErr) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ } else {\r
+ Status = PopEfikeyBufHead (&ConsoleInDev->EfiKeyQueue, KeyData);\r
+ }\r
+\r
+ gBS->RestoreTPL (OldTpl);\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Perform 8042 controller and keyboard initialization which implement SIMPLE_TEXT_IN.Reset()\r
+\r
+ @param This Pointer to instance of EFI_SIMPLE_TEXT_INPUT_PROTOCOL\r
+ @param ExtendedVerification Indicate that the driver may perform a more\r
+ exhaustive verification operation of the device during\r
+ reset, now this par is ignored in this driver\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+KeyboardEfiReset (\r
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r
+ IN BOOLEAN ExtendedVerification\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleIn;\r
+ EFI_TPL OldTpl;\r
+\r
+ ConsoleIn = KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
+ if (ConsoleIn->KeyboardErr) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
+ EFI_PROGRESS_CODE,\r
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_RESET,\r
+ ConsoleIn->DevicePath\r
+ );\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ //\r
+ // Call InitKeyboard to initialize the keyboard\r
+ //\r
+ Status = InitKeyboard (ConsoleIn, ExtendedVerification);\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+\r
+ //\r
+ // Report the status If a stuck key was detected\r
+ //\r
+ if (KeyReadStatusRegister (ConsoleIn) & 0x01) {\r
+ REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
+ EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_EC_STUCK_KEY,\r
+ ConsoleIn->DevicePath\r
+ );\r
+ }\r
+ //\r
+ // Report the status If keyboard is locked\r
+ //\r
+ if ((KeyReadStatusRegister (ConsoleIn) & 0x10) == 0) {\r
+ REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
+ EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_EC_LOCKED,\r
+ ConsoleIn->DevicePath\r
+ );\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Retrieve key values for driver user which implement SIMPLE_TEXT_IN.ReadKeyStroke().\r
+\r
+ @param This Pointer to instance of EFI_SIMPLE_TEXT_INPUT_PROTOCOL\r
+ @param Key The output buffer for key value\r
+\r
+ @retval EFI_SUCCESS success to read key stroke\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+KeyboardReadKeyStroke (\r
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r
+ OUT EFI_INPUT_KEY *Key\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleIn;\r
+ EFI_KEY_DATA KeyData;\r
+\r
+ ConsoleIn = KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
+\r
+ //\r
+ // Considering if the partial keystroke is enabled, there maybe a partial\r
+ // keystroke in the queue, so here skip the partial keystroke and get the\r
+ // next key from the queue\r
+ //\r
+ while (1) {\r
+ //\r
+ // If there is no pending key, then return.\r
+ //\r
+ Status = KeyboardReadKeyStrokeWorker (ConsoleIn, &KeyData);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ //\r
+ // If it is partial keystroke, skip it.\r
+ //\r
+ if (KeyData.Key.ScanCode == SCAN_NULL && KeyData.Key.UnicodeChar == CHAR_NULL) {\r
+ continue;\r
+ }\r
+ //\r
+ // Translate the CTRL-Alpha characters to their corresponding control value\r
+ // (ctrl-a = 0x0001 through ctrl-Z = 0x001A)\r
+ //\r
+ if ((KeyData.KeyState.KeyShiftState & (EFI_LEFT_CONTROL_PRESSED | EFI_RIGHT_CONTROL_PRESSED)) != 0) {\r
+ if (KeyData.Key.UnicodeChar >= L'a' && KeyData.Key.UnicodeChar <= L'z') {\r
+ KeyData.Key.UnicodeChar = (CHAR16) (KeyData.Key.UnicodeChar - L'a' + 1);\r
+ } else if (KeyData.Key.UnicodeChar >= L'A' && KeyData.Key.UnicodeChar <= L'Z') {\r
+ KeyData.Key.UnicodeChar = (CHAR16) (KeyData.Key.UnicodeChar - L'A' + 1);\r
+ }\r
+ }\r
+\r
+ CopyMem (Key, &KeyData.Key, sizeof (EFI_INPUT_KEY));\r
+ return EFI_SUCCESS;\r
+ }\r
+}\r
+\r
+/**\r
+ Event notification function for SIMPLE_TEXT_IN.WaitForKey event\r
+ Signal the event if there is key available\r
+\r
+ @param Event the event object\r
+ @param Context waitting context\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+KeyboardWaitForKey (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ EFI_TPL OldTpl;\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleIn;\r
+ EFI_KEY_DATA KeyData;\r
+\r
+ ConsoleIn = (KEYBOARD_CONSOLE_IN_DEV *) Context;\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ KeyboardTimerHandler (NULL, ConsoleIn);\r
+\r
+ if (!ConsoleIn->KeyboardErr) {\r
+ //\r
+ // WaitforKey doesn't suppor the partial key.\r
+ // Considering if the partial keystroke is enabled, there maybe a partial\r
+ // keystroke in the queue, so here skip the partial keystroke and get the\r
+ // next key from the queue\r
+ //\r
+ while (!IsEfikeyBufEmpty (&ConsoleIn->EfiKeyQueue)) {\r
+ CopyMem (\r
+ &KeyData,\r
+ &(ConsoleIn->EfiKeyQueue.Buffer[ConsoleIn->EfiKeyQueue.Head]),\r
+ sizeof (EFI_KEY_DATA)\r
+ );\r
+ if (KeyData.Key.ScanCode == SCAN_NULL && KeyData.Key.UnicodeChar == CHAR_NULL) {\r
+ PopEfikeyBufHead (&ConsoleIn->EfiKeyQueue, &KeyData);\r
+ continue;\r
+ }\r
+ //\r
+ // if there is pending value key, signal the event.\r
+ //\r
+ gBS->SignalEvent (Event);\r
+ break;\r
+ }\r
+ }\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+}\r
+\r
+/**\r
+ Event notification function for SIMPLE_TEXT_INPUT_EX_PROTOCOL.WaitForKeyEx event\r
+ Signal the event if there is key available\r
+\r
+ @param Event event object\r
+ @param Context waiting context\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+KeyboardWaitForKeyEx (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+\r
+{\r
+ KeyboardWaitForKey (Event, Context);\r
+}\r
+\r
+/**\r
+ Reset the input device and optionaly run diagnostics\r
+\r
+ @param This Protocol instance pointer.\r
+ @param ExtendedVerification Driver may perform diagnostics on reset.\r
+\r
+ @retval EFI_SUCCESS The device was reset.\r
+ @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r
+ not be reset.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+KeyboardEfiResetEx (\r
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r
+ IN BOOLEAN ExtendedVerification\r
+ )\r
+\r
+{\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleInDev;\r
+\r
+ ConsoleInDev = TEXT_INPUT_EX_KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
+\r
+ return ConsoleInDev->ConIn.Reset (\r
+ &ConsoleInDev->ConIn,\r
+ ExtendedVerification\r
+ );\r
+}\r
+\r
+/**\r
+ Reads the next keystroke from the input device. The WaitForKey Event can\r
+ be used to test for existance of a keystroke via WaitForEvent () call.\r
+\r
+\r
+ @param This Protocol instance pointer.\r
+ @param KeyData A pointer to a buffer that is filled in with the keystroke\r
+ state data for the key that was pressed.\r
+\r
+ @retval EFI_SUCCESS The keystroke information was returned.\r
+ @retval EFI_NOT_READY There was no keystroke data availiable.\r
+ @retval EFI_DEVICE_ERROR The keystroke information was not returned due to\r
+ hardware errors.\r
+ @retval EFI_INVALID_PARAMETER KeyData is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+KeyboardReadKeyStrokeEx (\r
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r
+ OUT EFI_KEY_DATA *KeyData\r
+ )\r
+\r
+{\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleInDev;\r
+\r
+ if (KeyData == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ ConsoleInDev = TEXT_INPUT_EX_KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
+ return KeyboardReadKeyStrokeWorker (ConsoleInDev, KeyData);\r
+}\r
+\r
+/**\r
+ Set certain state for the input device.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param KeyToggleState A pointer to the EFI_KEY_TOGGLE_STATE to set the\r
+ state for the input device.\r
+\r
+ @retval EFI_SUCCESS The device state was set successfully.\r
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly and could\r
+ not have the setting adjusted.\r
+ @retval EFI_UNSUPPORTED The device does not have the ability to set its state.\r
+ @retval EFI_INVALID_PARAMETER KeyToggleState is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+KeyboardSetState (\r
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r
+ IN EFI_KEY_TOGGLE_STATE *KeyToggleState\r
+ )\r
+\r
+{\r
+ EFI_STATUS Status;\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleInDev;\r
+ EFI_TPL OldTpl;\r
+\r
+ if (KeyToggleState == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ ConsoleInDev = TEXT_INPUT_EX_KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ if (ConsoleInDev->KeyboardErr) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ goto Exit;\r
+ }\r
+\r
+ if ((*KeyToggleState & EFI_TOGGLE_STATE_VALID) != EFI_TOGGLE_STATE_VALID) {\r
+ Status = EFI_UNSUPPORTED;\r
+ goto Exit;\r
+ }\r
+\r
+ //\r
+ // Update the status light\r
+ //\r
+ ConsoleInDev->ScrollLock = FALSE;\r
+ ConsoleInDev->NumLock = FALSE;\r
+ ConsoleInDev->CapsLock = FALSE;\r
+ ConsoleInDev->IsSupportPartialKey = FALSE;\r
+\r
+ if ((*KeyToggleState & EFI_SCROLL_LOCK_ACTIVE) == EFI_SCROLL_LOCK_ACTIVE) {\r
+ ConsoleInDev->ScrollLock = TRUE;\r
+ }\r
+ if ((*KeyToggleState & EFI_NUM_LOCK_ACTIVE) == EFI_NUM_LOCK_ACTIVE) {\r
+ ConsoleInDev->NumLock = TRUE;\r
+ }\r
+ if ((*KeyToggleState & EFI_CAPS_LOCK_ACTIVE) == EFI_CAPS_LOCK_ACTIVE) {\r
+ ConsoleInDev->CapsLock = TRUE;\r
+ }\r
+ if ((*KeyToggleState & EFI_KEY_STATE_EXPOSED) == EFI_KEY_STATE_EXPOSED) {\r
+ ConsoleInDev->IsSupportPartialKey = TRUE;\r
+ }\r
+\r
+ Status = UpdateStatusLights (ConsoleInDev);\r
+ if (EFI_ERROR (Status)) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ }\r
+\r
+Exit:\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+\r
+ return Status;\r
+\r
+}\r
+\r
+/**\r
+ Register a notification function for a particular keystroke for the input device.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param KeyData A pointer to a buffer that is filled in with the keystroke\r
+ information data for the key that was pressed.\r
+ @param KeyNotificationFunction Points to the function to be called when the key\r
+ sequence is typed specified by KeyData.\r
+ @param NotifyHandle Points to the unique handle assigned to the registered notification.\r
+\r
+ @retval EFI_SUCCESS The notification function was registered successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Unable to allocate resources for necesssary data structures.\r
+ @retval EFI_INVALID_PARAMETER KeyData or NotifyHandle or KeyNotificationFunction is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+KeyboardRegisterKeyNotify (\r
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r
+ IN EFI_KEY_DATA *KeyData,\r
+ IN EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction,\r
+ OUT VOID **NotifyHandle\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleInDev;\r
+ EFI_TPL OldTpl;\r
+ LIST_ENTRY *Link;\r
+ KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;\r
+ KEYBOARD_CONSOLE_IN_EX_NOTIFY *NewNotify;\r
+\r
+ if (KeyData == NULL || NotifyHandle == NULL || KeyNotificationFunction == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ ConsoleInDev = TEXT_INPUT_EX_KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ //\r
+ // Return EFI_SUCCESS if the (KeyData, NotificationFunction) is already registered.\r
+ //\r
+ for (Link = ConsoleInDev->NotifyList.ForwardLink; Link != &ConsoleInDev->NotifyList; Link = Link->ForwardLink) {\r
+ CurrentNotify = CR (\r
+ Link,\r
+ KEYBOARD_CONSOLE_IN_EX_NOTIFY,\r
+ NotifyEntry,\r
+ KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE\r
+ );\r
+ if (IsKeyRegistered (&CurrentNotify->KeyData, KeyData)) {\r
+ if (CurrentNotify->KeyNotificationFn == KeyNotificationFunction) {\r
+ *NotifyHandle = CurrentNotify;\r
+ Status = EFI_SUCCESS;\r
+ goto Exit;\r
+ }\r
+ }\r
+ }\r
+\r
+ //\r
+ // Allocate resource to save the notification function\r
+ //\r
+ NewNotify = (KEYBOARD_CONSOLE_IN_EX_NOTIFY *) AllocateZeroPool (sizeof (KEYBOARD_CONSOLE_IN_EX_NOTIFY));\r
+ if (NewNotify == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Exit;\r
+ }\r
+\r
+ NewNotify->Signature = KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE;\r
+ NewNotify->KeyNotificationFn = KeyNotificationFunction;\r
+ CopyMem (&NewNotify->KeyData, KeyData, sizeof (EFI_KEY_DATA));\r
+ InsertTailList (&ConsoleInDev->NotifyList, &NewNotify->NotifyEntry);\r
+\r
+ *NotifyHandle = NewNotify;\r
+ Status = EFI_SUCCESS;\r
+\r
+Exit:\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+ return Status;\r
+\r
+}\r
+\r
+/**\r
+ Remove a registered notification function from a particular keystroke.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param NotificationHandle The handle of the notification function being unregistered.\r
+\r
+\r
+ @retval EFI_SUCCESS The notification function was unregistered successfully.\r
+ @retval EFI_INVALID_PARAMETER The NotificationHandle is invalid.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+KeyboardUnregisterKeyNotify (\r
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r
+ IN VOID *NotificationHandle\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ KEYBOARD_CONSOLE_IN_DEV *ConsoleInDev;\r
+ EFI_TPL OldTpl;\r
+ LIST_ENTRY *Link;\r
+ KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;\r
+\r
+ if (NotificationHandle == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ ConsoleInDev = TEXT_INPUT_EX_KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ for (Link = ConsoleInDev->NotifyList.ForwardLink; Link != &ConsoleInDev->NotifyList; Link = Link->ForwardLink) {\r
+ CurrentNotify = CR (\r
+ Link,\r
+ KEYBOARD_CONSOLE_IN_EX_NOTIFY,\r
+ NotifyEntry,\r
+ KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE\r
+ );\r
+ if (CurrentNotify == NotificationHandle) {\r
+ //\r
+ // Remove the notification function from NotifyList and free resources\r
+ //\r
+ RemoveEntryList (&CurrentNotify->NotifyEntry);\r
+\r
+ gBS->FreePool (CurrentNotify);\r
+ Status = EFI_SUCCESS;\r
+ goto Exit;\r
+ }\r
+ }\r
+\r
+ //\r
+ // Can not find the specified Notification Handle\r
+ //\r
+ Status = EFI_INVALID_PARAMETER;\r
+Exit:\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+ return Status;\r
+}\r
+\r
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