* [PATCH v2 1/1] EmbeddedPkg/Drivers: add virtual keyboard driver
2018-03-08 13:34 [PATCH v2 0/1] add virtual keyboard driver Haojian Zhuang
@ 2018-03-08 13:34 ` Haojian Zhuang
2018-04-30 16:59 ` Leif Lindholm
0 siblings, 1 reply; 4+ messages in thread
From: Haojian Zhuang @ 2018-03-08 13:34 UTC (permalink / raw)
To: edk2-devel; +Cc: Haojian Zhuang, Leif Lindholm, Ard Biesheuvel
This driver is used to simulate a keyboard. For example, user
could read GPIO setting or data from RAM address. If the value
matches the expected pattern, it could trigger a key pressed
event.
User needs to implement hooks of PLATFORM_VIRTUAL_KBD_PROTOCOL.
There're 4 hooks in this protocol.
Register(): Quote the interface that user needs. For example, user
needs to locate GPIO protocol if he wants to simulate a GPIO value
as a key.
Reset(): Do the initialization before reading value.
Query(): Read value. If the value matches the expected pattern,
trigger a key pressed event.
Clear(): Clean the value if necessary.
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
---
EmbeddedPkg/EmbeddedPkg.dec | 1 +
EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboardDxe.inf | 60 +
EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.h | 154 +++
EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.h | 544 +++++++++
EmbeddedPkg/Include/Protocol/PlatformVirtualKeyboard.h | 65 ++
EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.c | 188 ++++
EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.c | 1149 ++++++++++++++++++++
7 files changed, 2161 insertions(+)
diff --git a/EmbeddedPkg/EmbeddedPkg.dec b/EmbeddedPkg/EmbeddedPkg.dec
index e48ce2e95bf7..eb135340b173 100644
--- a/EmbeddedPkg/EmbeddedPkg.dec
+++ b/EmbeddedPkg/EmbeddedPkg.dec
@@ -80,6 +80,7 @@ [Protocols.common]
gUsbDeviceProtocolGuid = { 0x021bd2ca, 0x51d2, 0x11e3, {0x8e, 0x56, 0xb7, 0x54, 0x17, 0xc7, 0x0b, 0x44 }}
gPlatformGpioProtocolGuid = { 0x52ce9845, 0x5af4, 0x43e2, {0xba, 0xfd, 0x23, 0x08, 0x12, 0x54, 0x7a, 0xc2 }}
gAndroidBootImgProtocolGuid = { 0x9859bb19, 0x407c, 0x4f8b, {0xbc, 0xe1, 0xf8, 0xda, 0x65, 0x65, 0xf4, 0xa5 }}
+ gPlatformVirtualKeyboardProtocolGuid = { 0x0e3606d2, 0x1dc3, 0x4e6f, { 0xbe, 0x65, 0x39, 0x49, 0x82, 0xa2, 0x65, 0x47 }}
[Ppis]
gEdkiiEmbeddedGpioPpiGuid = { 0x21c3b115, 0x4e0b, 0x470c, { 0x85, 0xc7, 0xe1, 0x05, 0xa5, 0x75, 0xc9, 0x7b }}
diff --git a/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboardDxe.inf b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
new file mode 100644
index 000000000000..deb54dab6592
--- /dev/null
+++ b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
@@ -0,0 +1,60 @@
+## @file
+# Virtual Keyboard driver.
+#
+# Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions
+# of the BSD License which accompanies this distribution. The
+# full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010019
+ BASE_NAME = VirtualKeyboardDxe
+ FILE_GUID = 88079b18-b42b-44aa-a6f2-b83911075e89
+ MODULE_TYPE = UEFI_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = InitializeVirtualKeyboard
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF ARM AARCH64
+#
+# DRIVER_BINDING = gVirtualKeyboardDriverBinding
+# COMPONENT_NAME = gVirtualKeyboardComponentName
+#
+
+[Sources.common]
+ ComponentName.c
+ VirtualKeyboard.c
+
+[Packages]
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ BaseMemoryLib
+ DebugLib
+ IoLib
+ ReportStatusCodeLib
+ UefiDriverEntryPoint
+ UefiBootServicesTableLib
+ UefiLib
+
+[Protocols]
+ gEfiDriverBindingProtocolGuid
+ gEfiSimpleTextInProtocolGuid
+ gEfiSimpleTextInputExProtocolGuid
+ gPlatformVirtualKeyboardProtocolGuid
+
+[Depex]
+ TRUE
diff --git a/EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.h b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.h
new file mode 100644
index 000000000000..94bef285086a
--- /dev/null
+++ b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.h
@@ -0,0 +1,154 @@
+/** @file
+
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>
+
+This program and the accompanying materials
+are licensed and made available under the terms and conditions
+of the BSD License which accompanies this distribution. The
+full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _VIRTUAL_KEYBOARD_COMPONENT_NAME_H_
+#define _VIRTUAL_KEYBOARD_COMPONENT_NAME_H_
+
+
+extern EFI_COMPONENT_NAME_PROTOCOL gVirtualKeyboardComponentName;
+extern EFI_COMPONENT_NAME2_PROTOCOL gVirtualKeyboardComponentName2;
+
+//
+// EFI Component Name Functions
+//
+/**
+ Retrieves a Unicode string that is the user readable name of the driver.
+
+ This function retrieves the user readable name of a driver in the form of a
+ Unicode string. If the driver specified by This has a user readable name in
+ the language specified by Language, then a pointer to the driver name is
+ returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
+ by This does not support the language specified by Language,
+ then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified
+ in RFC 4646 or ISO 639-2 language code format.
+
+ @param DriverName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ driver specified by This in the language
+ specified by Language.
+
+ @retval EFI_SUCCESS The Unicode string for the Driver specified by
+ This and the language specified by Language was
+ returned in DriverName.
+
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+
+ @retval EFI_INVALID_PARAMETER DriverName is NULL.
+
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetDriverName (
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
+ IN CHAR8 *Language,
+ OUT CHAR16 **DriverName
+ );
+
+
+/**
+ Retrieves a Unicode string that is the user readable name of the controller
+ that is being managed by a driver.
+
+ This function retrieves the user readable name of the controller specified by
+ ControllerHandle and ChildHandle in the form of a Unicode string. If the
+ driver specified by This has a user readable name in the language specified by
+ Language, then a pointer to the controller name is returned in ControllerName,
+ and EFI_SUCCESS is returned. If the driver specified by This is not currently
+ managing the controller specified by ControllerHandle and ChildHandle,
+ then EFI_UNSUPPORTED is returned. If the driver specified by This does not
+ support the language specified by Language, then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+
+ @param ControllerHandle[in] The handle of a controller that the driver
+ specified by This is managing. This handle
+ specifies the controller whose name is to be
+ returned.
+
+ @param ChildHandle[in] The handle of the child controller to retrieve
+ the name of. This is an optional parameter that
+ may be NULL. It will be NULL for device
+ drivers. It will also be NULL for a bus drivers
+ that wish to retrieve the name of the bus
+ controller. It will not be NULL for a bus
+ driver that wishes to retrieve the name of a
+ child controller.
+
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified in
+ RFC 4646 or ISO 639-2 language code format.
+
+ @param ControllerName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ controller specified by ControllerHandle and
+ ChildHandle in the language specified by
+ Language from the point of view of the driver
+ specified by This.
+
+ @retval EFI_SUCCESS The Unicode string for the user readable name in
+ the language specified by Language for the
+ driver specified by This was returned in
+ DriverName.
+
+ @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
+
+ @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
+ EFI_HANDLE.
+
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+
+ @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+
+ @retval EFI_UNSUPPORTED The driver specified by This is not currently
+ managing the controller specified by
+ ControllerHandle and ChildHandle.
+
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetControllerName (
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_HANDLE ChildHandle OPTIONAL,
+ IN CHAR8 *Language,
+ OUT CHAR16 **ControllerName
+ );
+
+
+#endif
diff --git a/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.h b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.h
new file mode 100644
index 000000000000..6dc8264521a6
--- /dev/null
+++ b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.h
@@ -0,0 +1,544 @@
+/** @file
+
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>
+
+This program and the accompanying materials
+are licensed and made available under the terms and conditions
+of the BSD License which accompanies this distribution. The
+full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _VIRTUAL_KEYBOARD_H_
+#define _VIRTUAL_KEYBOARD_H_
+
+
+#include <Guid/StatusCodeDataTypeId.h>
+#include <Protocol/DevicePath.h>
+#include <Protocol/PlatformVirtualKeyboard.h>
+#include <Protocol/SimpleTextIn.h>
+#include <Protocol/SimpleTextInEx.h>
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/IoLib.h>
+#include <Library/PcdLib.h>
+#include <Library/ReportStatusCodeLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/UefiLib.h>
+
+//
+// Driver Binding Externs
+//
+extern EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding;
+extern EFI_COMPONENT_NAME_PROTOCOL gVirtualKeyboardComponentName;
+extern EFI_COMPONENT_NAME2_PROTOCOL gVirtualKeyboardComponentName2;
+
+
+//
+// VIRTUAL Keyboard Defines
+//
+#define CHAR_SCANCODE 0xe0
+#define CHAR_ESC 0x1b
+
+#define KEYBOARD_TIMEOUT 65536 // 0.07s
+#define KEYBOARD_WAITFORVALUE_TIMEOUT 1000000 // 1s
+#define KEYBOARD_BAT_TIMEOUT 4000000 // 4s
+#define KEYBOARD_TIMER_INTERVAL 500000 // 0.5s
+
+#define QUEUE_MAX_COUNT 32
+
+#define KEYBOARD_SCAN_CODE_MAX_COUNT 32
+
+//
+// VIRTUAL Keyboard Device Structure
+//
+#define VIRTUAL_KEYBOARD_DEV_SIGNATURE SIGNATURE_32 ('V', 'K', 'B', 'D')
+#define VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE SIGNATURE_32 ('v', 'k', 'c', 'n')
+
+typedef struct _VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY {
+ UINTN Signature;
+ EFI_KEY_DATA KeyData;
+ EFI_KEY_NOTIFY_FUNCTION KeyNotificationFn;
+ LIST_ENTRY NotifyEntry;
+} VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY;
+
+typedef struct {
+ UINTN Front;
+ UINTN Rear;
+ EFI_KEY_DATA Buffer[QUEUE_MAX_COUNT];
+} SIMPLE_QUEUE;
+
+typedef struct {
+ UINT8 Buffer[KEYBOARD_SCAN_CODE_MAX_COUNT];
+ UINTN Head;
+ UINTN Tail;
+} SCAN_CODE_QUEUE;
+
+typedef struct {
+ UINTN Signature;
+ EFI_HANDLE Handle;
+ PLATFORM_VIRTUAL_KBD_PROTOCOL *PlatformVirtual;
+ EFI_SIMPLE_TEXT_INPUT_PROTOCOL SimpleTextIn;
+ EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL SimpleTextInputEx;
+
+ //
+ // Buffer storing EFI_KEY_DATA
+ //
+ SIMPLE_QUEUE Queue;
+ SIMPLE_QUEUE QueueForNotify;
+
+ //
+ // Notification Function List
+ //
+ LIST_ENTRY NotifyList;
+ EFI_EVENT KeyNotifyProcessEvent;
+ EFI_EVENT TimerEvent;
+} VIRTUAL_KEYBOARD_DEV;
+
+#define VIRTUAL_KEYBOARD_DEV_FROM_THIS(a) CR (a, VIRTUAL_KEYBOARD_DEV, SimpleTextIn, VIRTUAL_KEYBOARD_DEV_SIGNATURE)
+#define TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS(a) \
+ CR (a, \
+ VIRTUAL_KEYBOARD_DEV, \
+ SimpleTextInputEx, \
+ VIRTUAL_KEYBOARD_DEV_SIGNATURE \
+ )
+
+//
+// Global Variables
+//
+extern EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding;
+
+//
+// Driver Binding Protocol functions
+//
+
+/**
+ Check whether the driver supports this device.
+
+ @param This The Udriver binding protocol.
+ @param Controller The controller handle to check.
+ @param RemainingDevicePath The remaining device path.
+
+ @retval EFI_SUCCESS The driver supports this controller.
+ @retval other This device isn't supported.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ );
+
+/**
+ Starts the device with this driver.
+
+ @param This The driver binding instance.
+ @param Controller Handle of device to bind driver to.
+ @param RemainingDevicePath Optional parameter use to pick a specific child
+ device to start.
+
+ @retval EFI_SUCCESS The controller is controlled by the driver.
+ @retval Other This controller cannot be started.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ );
+
+/**
+ Stop the device handled by this driver.
+
+ @param This The driver binding protocol.
+ @param Controller The controller to release.
+ @param NumberOfChildren The number of handles in ChildHandleBuffer.
+ @param ChildHandleBuffer The array of child handle.
+
+ @retval EFI_SUCCESS The device was stopped.
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
+ @retval Others Fail to uninstall protocols attached on the device.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ );
+
+/**
+ Retrieves a Unicode string that is the user readable name of the driver.
+
+ This function retrieves the user readable name of a driver in the form of a
+ Unicode string. If the driver specified by This has a user readable name in
+ the language specified by Language, then a pointer to the driver name is
+ returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
+ by This does not support the language specified by Language,
+ then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified
+ in RFC 4646 or ISO 639-2 language code format.
+
+ @param DriverName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ driver specified by This in the language
+ specified by Language.
+
+ @retval EFI_SUCCESS The Unicode string for the Driver specified by
+ This and the language specified by Language was
+ returned in DriverName.
+
+ @retval EFI_INVALID_PAVIRTUALETER Language is NULL.
+
+ @retval EFI_INVALID_PAVIRTUALETER DriverName is NULL.
+
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetDriverName (
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
+ IN CHAR8 *Language,
+ OUT CHAR16 **DriverName
+ );
+
+
+/**
+ Retrieves a Unicode string that is the user readable name of the controller
+ that is being managed by a driver.
+
+ This function retrieves the user readable name of the controller specified by
+ ControllerHandle and ChildHandle in the form of a Unicode string. If the
+ driver specified by This has a user readable name in the language specified by
+ Language, then a pointer to the controller name is returned in ControllerName,
+ and EFI_SUCCESS is returned. If the driver specified by This is not currently
+ managing the controller specified by ControllerHandle and ChildHandle,
+ then EFI_UNSUPPORTED is returned. If the driver specified by This does not
+ support the language specified by Language, then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+
+ @param ControllerHandle[in] The handle of a controller that the driver
+ specified by This is managing. This handle
+ specifies the controller whose name is to be
+ returned.
+
+ @param ChildHandle[in] The handle of the child controller to retrieve
+ the name of. This is an optional parameter that
+ may be NULL. It will be NULL for device
+ drivers. It will also be NULL for a bus drivers
+ that wish to retrieve the name of the bus
+ controller. It will not be NULL for a bus
+ driver that wishes to retrieve the name of a
+ child controller.
+
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified in
+ RFC 4646 or ISO 639-2 language code format.
+
+ @param ControllerName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ controller specified by ControllerHandle and
+ ChildHandle in the language specified by
+ Language from the point of view of the driver
+ specified by This.
+
+ @retval EFI_SUCCESS The Unicode string for the user readable name in
+ the language specified by Language for the
+ driver specified by This was returned in
+ DriverName.
+
+ @retval EFI_INVALID_PAVIRTUALETER ControllerHandle is NULL.
+
+ @retval EFI_INVALID_PAVIRTUALETER ChildHandle is not NULL and it is not a valid
+ EFI_HANDLE.
+
+ @retval EFI_INVALID_PAVIRTUALETER Language is NULL.
+
+ @retval EFI_INVALID_PAVIRTUALETER ControllerName is NULL.
+
+ @retval EFI_UNSUPPORTED The driver specified by This is not currently
+ managing the controller specified by
+ ControllerHandle and ChildHandle.
+
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetControllerName (
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_HANDLE ChildHandle OPTIONAL,
+ IN CHAR8 *Language,
+ OUT CHAR16 **ControllerName
+ );
+
+
+//
+// Simple Text Input Protocol functions
+//
+/**
+ Reset the Keyboard and do BAT test for it, if (ExtendedVerification == TRUE) then do some extra keyboard validations.
+
+ @param This Pointer of simple text Protocol.
+ @param ExtendedVerification Whether perform the extra validation of keyboard. True: perform; FALSE: skip.
+
+ @retval EFI_SUCCESS The command byte is written successfully.
+ @retval EFI_DEVICE_ERROR Errors occurred during resetting keyboard.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardReset (
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+ IN BOOLEAN ExtendedVerification
+ );
+
+/**
+ Reset the input device and optionaly run diagnostics
+
+ @param This Protocol instance pointer.
+ @param ExtendedVerification Driver may perform diagnostics on reset.
+
+ @retval EFI_SUCCESS The device was reset.
+ @retval EFI_DEVICE_ERROR The device is not functioning properly and could
+ not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardResetEx (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN BOOLEAN ExtendedVerification
+ );
+
+/**
+ Set certain state for the input device.
+
+ @param This Protocol instance pointer.
+ @param KeyToggleState A pointer to the EFI_KEY_TOGGLE_STATE to set the
+ state for the input device.
+
+ @retval EFI_SUCCESS The device state was set successfully.
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly and could
+ not have the setting adjusted.
+ @retval EFI_UNSUPPORTED The device does not have the ability to set its state.
+ @retval EFI_INVALID_PAVIRTUALETER KeyToggleState is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardSetState (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN EFI_KEY_TOGGLE_STATE *KeyToggleState
+ );
+
+/**
+ Register a notification function for a particular keystroke for the input device.
+
+ @param This Protocol instance pointer.
+ @param KeyData A pointer to a buffer that is filled in with the keystroke
+ information data for the key that was pressed.
+ @param KeyNotificationFunction Points to the function to be called when the key
+ sequence is typed specified by KeyData.
+ @param NotifyHandle Points to the unique handle assigned to the registered notification.
+
+
+ @retval EFI_SUCCESS The notification function was registered successfully.
+ @retval EFI_OUT_OF_RESOURCES Unable to allocate resources for necesssary data structures.
+ @retval EFI_INVALID_PAVIRTUALETER KeyData or NotifyHandle is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardRegisterKeyNotify (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN EFI_KEY_DATA *KeyData,
+ IN EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction,
+ OUT VOID **NotifyHandle
+ );
+
+/**
+ Remove a registered notification function from a particular keystroke.
+
+ @param This Protocol instance pointer.
+ @param NotificationHandle The handle of the notification function being unregistered.
+
+ @retval EFI_SUCCESS The notification function was unregistered successfully.
+ @retval EFI_INVALID_PAVIRTUALETER The NotificationHandle is invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardUnregisterKeyNotify (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN VOID *NotificationHandle
+ );
+
+//
+// Private worker functions
+//
+/**
+ Free keyboard notify list.
+
+ @param ListHead The list head
+
+ @retval EFI_SUCCESS Free the notify list successfully
+ @retval EFI_INVALID_PAVIRTUALETER ListHead is invalid.
+
+**/
+EFI_STATUS
+VirtualKeyboardFreeNotifyList (
+ IN OUT LIST_ENTRY *ListHead
+ );
+
+/**
+ Check if key is registered.
+
+ @param RegsiteredData A pointer to a buffer that is filled in with the keystroke
+ state data for the key that was registered.
+ @param InputData A pointer to a buffer that is filled in with the keystroke
+ state data for the key that was pressed.
+
+ @retval TRUE Key be pressed matches a registered key.
+ @retval FLASE Match failed.
+
+**/
+BOOLEAN
+IsKeyRegistered (
+ IN EFI_KEY_DATA *RegsiteredData,
+ IN EFI_KEY_DATA *InputData
+ );
+
+/**
+ Waiting on the keyboard event, if there's any key pressed by the user, signal the event
+
+ @param Event The event that be siganlled when any key has been stroked.
+ @param Context Pointer of the protocol EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
+
+**/
+VOID
+EFIAPI
+VirtualKeyboardWaitForKey (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ );
+
+/**
+ Waiting on the keyboard event, if there's any key pressed by the user, signal the event
+
+ @param Event The event that be siganlled when any key has been stroked.
+ @param Context Pointer of the protocol EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
+
+**/
+VOID
+EFIAPI
+VirtualKeyboardWaitForKeyEx (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ );
+
+/**
+ Timer event handler: read a series of key stroke from 8042
+ and put them into memory key buffer.
+ It is registered as running under TPL_NOTIFY
+
+ @param Event The timer event
+ @param Context A VIRTUAL_KEYBOARD_DEV pointer
+
+**/
+VOID
+EFIAPI
+VirtualKeyboardTimerHandler (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ );
+
+/**
+ Process key notify.
+
+ @param Event Indicates the event that invoke this function.
+ @param Context Indicates the calling context.
+**/
+VOID
+EFIAPI
+KeyNotifyProcessHandler (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ );
+
+/**
+ Read out the scan code of the key that has just been stroked.
+
+ @param This Pointer of simple text Protocol.
+ @param Key Pointer for store the key that read out.
+
+ @retval EFI_SUCCESS The key is read out successfully.
+ @retval other The key reading failed.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardReadKeyStroke (
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+ OUT EFI_INPUT_KEY *Key
+ );
+
+/**
+ Reads the next keystroke from the input device. The WaitForKey Event can
+ be used to test for existance of a keystroke via WaitForEvent () call.
+
+ @param This Protocol instance pointer.
+ @param KeyData A pointer to a buffer that is filled in with the keystroke
+ state data for the key that was pressed.
+
+ @retval EFI_SUCCESS The keystroke information was returned.
+ @retval EFI_NOT_READY There was no keystroke data availiable.
+ @retval EFI_DEVICE_ERROR The keystroke information was not returned due to
+ hardware errors.
+ @retval EFI_INVALID_PAVIRTUALETER KeyData is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardReadKeyStrokeEx (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ OUT EFI_KEY_DATA *KeyData
+ );
+
+#endif /* _VIRTUAL_KEYBOARD_H_ */
diff --git a/EmbeddedPkg/Include/Protocol/PlatformVirtualKeyboard.h b/EmbeddedPkg/Include/Protocol/PlatformVirtualKeyboard.h
new file mode 100644
index 000000000000..c64d21e45c08
--- /dev/null
+++ b/EmbeddedPkg/Include/Protocol/PlatformVirtualKeyboard.h
@@ -0,0 +1,65 @@
+/** @file
+
+ Copyright (c) 2018, Linaro. All rights reserved.
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __PLATFORM_VIRTUAL_KEYBOARD_H__
+#define __PLATFORM_VIRTUAL_KEYBOARD_H__
+
+//
+// Protocol interface structure
+//
+typedef struct _PLATFORM_VIRTUAL_KBD_PROTOCOL PLATFORM_VIRTUAL_KBD_PROTOCOL;
+
+typedef struct _VIRTUAL_KBD_KEY VIRTUAL_KBD_KEY;
+
+#define VIRTUAL_KEYBOARD_KEY_SIGNATURE SIGNATURE_32 ('v', 'k', 'b', 'd')
+
+struct _VIRTUAL_KBD_KEY {
+ UINTN Signature;
+ EFI_INPUT_KEY Key;
+};
+
+typedef
+EFI_STATUS
+(EFIAPI *PLATFORM_VIRTUAL_KBD_REGISTER) (
+ IN VOID
+ );
+
+typedef
+EFI_STATUS
+(EFIAPI *PLATFORM_VIRTUAL_KBD_RESET) (
+ IN VOID
+ );
+
+typedef
+BOOLEAN
+(EFIAPI *PLATFORM_VIRTUAL_KBD_QUERY) (
+ IN VIRTUAL_KBD_KEY *VirtualKey
+ );
+
+typedef
+EFI_STATUS
+(EFIAPI *PLATFORM_VIRTUAL_KBD_CLEAR) (
+ IN VIRTUAL_KBD_KEY *VirtualKey
+ );
+
+struct _PLATFORM_VIRTUAL_KBD_PROTOCOL {
+ PLATFORM_VIRTUAL_KBD_REGISTER Register;
+ PLATFORM_VIRTUAL_KBD_RESET Reset;
+ PLATFORM_VIRTUAL_KBD_QUERY Query;
+ PLATFORM_VIRTUAL_KBD_CLEAR Clear;
+};
+
+extern EFI_GUID gPlatformVirtualKeyboardProtocolGuid;
+
+#endif /* __PLATFORM_VIRTUAL_KEYBOARD_H__ */
diff --git a/EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.c b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.c
new file mode 100644
index 000000000000..9ba706c37b8d
--- /dev/null
+++ b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/ComponentName.c
@@ -0,0 +1,188 @@
+/** @file
+
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>
+
+This program and the accompanying materials
+are licensed and made available under the terms and conditions
+of the BSD License which accompanies this distribution. The
+full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "VirtualKeyboard.h"
+
+//
+// EFI Component Name Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL gVirtualKeyboardComponentName = {
+ VirtualKeyboardComponentNameGetDriverName,
+ VirtualKeyboardComponentNameGetControllerName,
+ "eng"
+};
+
+//
+// EFI Component Name 2 Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gVirtualKeyboardComponentName2 = {
+ (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) VirtualKeyboardComponentNameGetDriverName,
+ (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) VirtualKeyboardComponentNameGetControllerName,
+ "en"
+};
+
+
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mVirtualKeyboardDriverNameTable[] = {
+ {
+ "eng;en",
+ L"Virtual Keyboard Driver"
+ },
+ {
+ "zh-CHS",
+ L"虚拟键盘驱动程序"
+ },
+ {
+ NULL,
+ NULL
+ }
+};
+
+/**
+ Retrieves a Unicode string that is the user readable name of the driver.
+
+ This function retrieves the user readable name of a driver in the form of a
+ Unicode string. If the driver specified by This has a user readable name in
+ the language specified by Language, then a pointer to the driver name is
+ returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
+ by This does not support the language specified by Language,
+ then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified
+ in RFC 4646 or ISO 639-2 language code format.
+
+ @param DriverName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ driver specified by This in the language
+ specified by Language.
+
+ @retval EFI_SUCCESS The Unicode string for the Driver specified by
+ This and the language specified by Language was
+ returned in DriverName.
+
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+
+ @retval EFI_INVALID_PARAMETER DriverName is NULL.
+
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetDriverName (
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
+ IN CHAR8 *Language,
+ OUT CHAR16 **DriverName
+ )
+{
+ return LookupUnicodeString2 (
+ Language,
+ This->SupportedLanguages,
+ mVirtualKeyboardDriverNameTable,
+ DriverName,
+ (BOOLEAN)(This == &gVirtualKeyboardComponentName)
+ );
+}
+
+/**
+ Retrieves a Unicode string that is the user readable name of the controller
+ that is being managed by a driver.
+
+ This function retrieves the user readable name of the controller specified by
+ ControllerHandle and ChildHandle in the form of a Unicode string. If the
+ driver specified by This has a user readable name in the language specified by
+ Language, then a pointer to the controller name is returned in ControllerName,
+ and EFI_SUCCESS is returned. If the driver specified by This is not currently
+ managing the controller specified by ControllerHandle and ChildHandle,
+ then EFI_UNSUPPORTED is returned. If the driver specified by This does not
+ support the language specified by Language, then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+
+ @param ControllerHandle[in] The handle of a controller that the driver
+ specified by This is managing. This handle
+ specifies the controller whose name is to be
+ returned.
+
+ @param ChildHandle[in] The handle of the child controller to retrieve
+ the name of. This is an optional parameter that
+ may be NULL. It will be NULL for device
+ drivers. It will also be NULL for a bus drivers
+ that wish to retrieve the name of the bus
+ controller. It will not be NULL for a bus
+ driver that wishes to retrieve the name of a
+ child controller.
+
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified in
+ RFC 4646 or ISO 639-2 language code format.
+
+ @param ControllerName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ controller specified by ControllerHandle and
+ ChildHandle in the language specified by
+ Language from the point of view of the driver
+ specified by This.
+
+ @retval EFI_SUCCESS The Unicode string for the user readable name in
+ the language specified by Language for the
+ driver specified by This was returned in
+ DriverName.
+
+ @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
+
+ @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
+ EFI_HANDLE.
+
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+
+ @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+
+ @retval EFI_UNSUPPORTED The driver specified by This is not currently
+ managing the controller specified by
+ ControllerHandle and ChildHandle.
+
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetControllerName (
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_HANDLE ChildHandle OPTIONAL,
+ IN CHAR8 *Language,
+ OUT CHAR16 **ControllerName
+ )
+{
+ return EFI_UNSUPPORTED;
+}
diff --git a/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.c b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.c
new file mode 100644
index 000000000000..6609bc8dbe9b
--- /dev/null
+++ b/EmbeddedPkg/Drivers/VirtualKeyboardDxe/VirtualKeyboard.c
@@ -0,0 +1,1149 @@
+/** @file
+ VirtualKeyboard driver
+
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>
+
+This program and the accompanying materials
+are licensed and made available under the terms and conditions
+of the BSD License which accompanies this distribution. The
+full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "VirtualKeyboard.h"
+
+//
+// RAM Keyboard Driver Binding Protocol Instance
+//
+EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding = {
+ VirtualKeyboardDriverBindingSupported,
+ VirtualKeyboardDriverBindingStart,
+ VirtualKeyboardDriverBindingStop,
+ 0x10,
+ NULL,
+ NULL
+};
+
+//
+// EFI Driver Binding Protocol Functions
+//
+
+/**
+ Check whether the driver supports this device.
+
+ @param This The Udriver binding protocol.
+ @param Controller The controller handle to check.
+ @param RemainingDevicePath The remaining device path.
+
+ @retval EFI_SUCCESS The driver supports this controller.
+ @retval other This device isn't supported.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ PLATFORM_VIRTUAL_KBD_PROTOCOL *PlatformVirtual;
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gPlatformVirtualKeyboardProtocolGuid,
+ (VOID **) &PlatformVirtual,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ gBS->CloseProtocol (
+ Controller,
+ &gPlatformVirtualKeyboardProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ return Status;
+}
+
+/**
+ Starts the device with this driver.
+
+ @param This The driver binding instance.
+ @param Controller Handle of device to bind driver to.
+ @param RemainingDevicePath Optional parameter use to pick a specific child
+ device to start.
+
+ @retval EFI_SUCCESS The controller is controlled by the driver.
+ @retval Other This controller cannot be started.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ PLATFORM_VIRTUAL_KBD_PROTOCOL *PlatformVirtual;
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gPlatformVirtualKeyboardProtocolGuid,
+ (VOID **) &PlatformVirtual,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Allocate the private device structure
+ //
+ VirtualKeyboardPrivate = (VIRTUAL_KEYBOARD_DEV *) AllocateZeroPool (sizeof (VIRTUAL_KEYBOARD_DEV));
+ if (VirtualKeyboardPrivate == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ //
+ // Initialize the private device structure
+ //
+ VirtualKeyboardPrivate->Signature = VIRTUAL_KEYBOARD_DEV_SIGNATURE;
+ VirtualKeyboardPrivate->Handle = Controller;
+ VirtualKeyboardPrivate->PlatformVirtual = PlatformVirtual;
+ VirtualKeyboardPrivate->Queue.Front = 0;
+ VirtualKeyboardPrivate->Queue.Rear = 0;
+ VirtualKeyboardPrivate->QueueForNotify.Front = 0;
+ VirtualKeyboardPrivate->QueueForNotify.Rear = 0;
+
+ VirtualKeyboardPrivate->SimpleTextIn.Reset = VirtualKeyboardReset;
+ VirtualKeyboardPrivate->SimpleTextIn.ReadKeyStroke = VirtualKeyboardReadKeyStroke;
+
+ VirtualKeyboardPrivate->SimpleTextInputEx.Reset = VirtualKeyboardResetEx;
+ VirtualKeyboardPrivate->SimpleTextInputEx.ReadKeyStrokeEx = VirtualKeyboardReadKeyStrokeEx;
+ VirtualKeyboardPrivate->SimpleTextInputEx.SetState = VirtualKeyboardSetState;
+
+ VirtualKeyboardPrivate->SimpleTextInputEx.RegisterKeyNotify = VirtualKeyboardRegisterKeyNotify;
+ VirtualKeyboardPrivate->SimpleTextInputEx.UnregisterKeyNotify = VirtualKeyboardUnregisterKeyNotify;
+ InitializeListHead (&VirtualKeyboardPrivate->NotifyList);
+
+ Status = PlatformVirtual->Register ();
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
+
+ //
+ // Report that the keyboard is being enabled
+ //
+ REPORT_STATUS_CODE (
+ EFI_PROGRESS_CODE,
+ EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_ENABLE
+ );
+
+ //
+ // Setup the WaitForKey event
+ //
+ Status = gBS->CreateEvent (
+ EVT_NOTIFY_WAIT,
+ TPL_NOTIFY,
+ VirtualKeyboardWaitForKey,
+ &(VirtualKeyboardPrivate->SimpleTextIn),
+ &((VirtualKeyboardPrivate->SimpleTextIn).WaitForKey)
+ );
+ if (EFI_ERROR (Status)) {
+ (VirtualKeyboardPrivate->SimpleTextIn).WaitForKey = NULL;
+ goto Done;
+ }
+ Status = gBS->CreateEvent (
+ EVT_NOTIFY_WAIT,
+ TPL_NOTIFY,
+ VirtualKeyboardWaitForKeyEx,
+ &(VirtualKeyboardPrivate->SimpleTextInputEx),
+ &(VirtualKeyboardPrivate->SimpleTextInputEx.WaitForKeyEx)
+ );
+ if (EFI_ERROR (Status)) {
+ VirtualKeyboardPrivate->SimpleTextInputEx.WaitForKeyEx = NULL;
+ goto Done;
+ }
+
+ //
+ // Setup a periodic timer, used for reading keystrokes at a fixed interval
+ //
+ Status = gBS->CreateEvent (
+ EVT_TIMER | EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ VirtualKeyboardTimerHandler,
+ VirtualKeyboardPrivate,
+ &VirtualKeyboardPrivate->TimerEvent
+ );
+ if (EFI_ERROR (Status)) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ Status = gBS->SetTimer (
+ VirtualKeyboardPrivate->TimerEvent,
+ TimerPeriodic,
+ KEYBOARD_TIMER_INTERVAL
+ );
+ if (EFI_ERROR (Status)) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ Status = gBS->CreateEvent (
+ EVT_NOTIFY_SIGNAL,
+ TPL_CALLBACK,
+ KeyNotifyProcessHandler,
+ VirtualKeyboardPrivate,
+ &VirtualKeyboardPrivate->KeyNotifyProcessEvent
+ );
+ if (EFI_ERROR (Status)) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ //
+ // Reset the keyboard device
+ //
+ Status = VirtualKeyboardPrivate->SimpleTextInputEx.Reset (
+ &VirtualKeyboardPrivate->SimpleTextInputEx,
+ FALSE
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "[KBD]Reset Failed. Status - %r\n", Status));
+ goto Done;
+ }
+ //
+ // Install protocol interfaces for the keyboard device.
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Controller,
+ &gEfiSimpleTextInProtocolGuid,
+ &VirtualKeyboardPrivate->SimpleTextIn,
+ &gEfiSimpleTextInputExProtocolGuid,
+ &VirtualKeyboardPrivate->SimpleTextInputEx,
+ NULL
+ );
+
+Done:
+ if (EFI_ERROR (Status)) {
+ if (VirtualKeyboardPrivate != NULL) {
+ if ((VirtualKeyboardPrivate->SimpleTextIn).WaitForKey != NULL) {
+ gBS->CloseEvent ((VirtualKeyboardPrivate->SimpleTextIn).WaitForKey);
+ }
+
+ if ((VirtualKeyboardPrivate->SimpleTextInputEx).WaitForKeyEx != NULL) {
+ gBS->CloseEvent (
+ (VirtualKeyboardPrivate->SimpleTextInputEx).WaitForKeyEx
+ );
+ }
+
+ if (VirtualKeyboardPrivate->KeyNotifyProcessEvent != NULL) {
+ gBS->CloseEvent (VirtualKeyboardPrivate->KeyNotifyProcessEvent);
+ }
+
+ VirtualKeyboardFreeNotifyList (&VirtualKeyboardPrivate->NotifyList);
+
+ if (VirtualKeyboardPrivate->TimerEvent != NULL) {
+ gBS->CloseEvent (VirtualKeyboardPrivate->TimerEvent);
+ }
+ FreePool (VirtualKeyboardPrivate);
+ }
+ }
+
+ gBS->CloseProtocol (
+ Controller,
+ &gPlatformVirtualKeyboardProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ return Status;
+}
+
+/**
+ Stop the device handled by this driver.
+
+ @param This The driver binding protocol.
+ @param Controller The controller to release.
+ @param NumberOfChildren The number of handles in ChildHandleBuffer.
+ @param ChildHandleBuffer The array of child handle.
+
+ @retval EFI_SUCCESS The device was stopped.
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a
+ device error.
+ @retval Others Fail to uninstall protocols attached on the
+ device.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ )
+{
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Enqueue the key.
+
+ @param Queue The queue to be enqueued.
+ @param KeyData The key data to be enqueued.
+
+ @retval EFI_NOT_READY The queue is full.
+ @retval EFI_SUCCESS Successfully enqueued the key data.
+
+**/
+EFI_STATUS
+Enqueue (
+ IN SIMPLE_QUEUE *Queue,
+ IN EFI_KEY_DATA *KeyData
+ )
+{
+ if ((Queue->Rear + 1) % QUEUE_MAX_COUNT == Queue->Front) {
+ return EFI_NOT_READY;
+ }
+
+ CopyMem (&Queue->Buffer[Queue->Rear], KeyData, sizeof (EFI_KEY_DATA));
+ Queue->Rear = (Queue->Rear + 1) % QUEUE_MAX_COUNT;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Dequeue the key.
+
+ @param Queue The queue to be dequeued.
+ @param KeyData The key data to be dequeued.
+
+ @retval EFI_NOT_READY The queue is empty.
+ @retval EFI_SUCCESS Successfully dequeued the key data.
+
+**/
+EFI_STATUS
+Dequeue (
+ IN SIMPLE_QUEUE *Queue,
+ IN EFI_KEY_DATA *KeyData
+ )
+{
+ if (Queue->Front == Queue->Rear) {
+ return EFI_NOT_READY;
+ }
+
+ CopyMem (KeyData, &Queue->Buffer[Queue->Front], sizeof (EFI_KEY_DATA));
+ Queue->Front = (Queue->Front + 1) % QUEUE_MAX_COUNT;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Check whether the queue is empty.
+
+ @param Queue The queue to be checked.
+
+ @retval EFI_NOT_READY The queue is empty.
+ @retval EFI_SUCCESS The queue is not empty.
+
+**/
+EFI_STATUS
+CheckQueue (
+ IN SIMPLE_QUEUE *Queue
+ )
+{
+ if (Queue->Front == Queue->Rear) {
+ return EFI_NOT_READY;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Check key buffer to get the key stroke status.
+
+ @param This Pointer of the protocol EFI_SIMPLE_TEXT_IN_PROTOCOL.
+
+ @retval EFI_SUCCESS A key is being pressed now.
+ @retval Other No key is now pressed.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardCheckForKey (
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This
+ )
+{
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+
+ VirtualKeyboardPrivate = VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);
+
+ return CheckQueue (&VirtualKeyboardPrivate->Queue);
+}
+
+/**
+ Free keyboard notify list.
+
+ @param ListHead The list head
+
+ @retval EFI_SUCCESS Free the notify list successfully
+ @retval EFI_INVALID_PARAMETER ListHead is invalid.
+
+**/
+EFI_STATUS
+VirtualKeyboardFreeNotifyList (
+ IN OUT LIST_ENTRY *ListHead
+ )
+{
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *NotifyNode;
+
+ if (ListHead == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ while (!IsListEmpty (ListHead)) {
+ NotifyNode = CR (
+ ListHead->ForwardLink,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,
+ NotifyEntry,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE
+ );
+ RemoveEntryList (ListHead->ForwardLink);
+ gBS->FreePool (NotifyNode);
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Judge whether is a registed key
+
+ @param RegsiteredData A pointer to a buffer that is filled in with
+ the keystroke state data for the key that was
+ registered.
+ @param InputData A pointer to a buffer that is filled in with
+ the keystroke state data for the key that was
+ pressed.
+
+ @retval TRUE Key be pressed matches a registered key.
+ @retval FLASE Match failed.
+
+**/
+BOOLEAN
+IsKeyRegistered (
+ IN EFI_KEY_DATA *RegsiteredData,
+ IN EFI_KEY_DATA *InputData
+ )
+
+{
+ ASSERT (RegsiteredData != NULL && InputData != NULL);
+
+ if ((RegsiteredData->Key.ScanCode != InputData->Key.ScanCode) ||
+ (RegsiteredData->Key.UnicodeChar != InputData->Key.UnicodeChar)) {
+ return FALSE;
+ }
+
+ //
+ // Assume KeyShiftState/KeyToggleState = 0 in Registered key data means
+ // these state could be ignored.
+ //
+ if ((RegsiteredData->KeyState.KeyShiftState != 0) &&
+ (RegsiteredData->KeyState.KeyShiftState != InputData->KeyState.KeyShiftState)) {
+ return FALSE;
+ }
+ if ((RegsiteredData->KeyState.KeyToggleState != 0) &&
+ (RegsiteredData->KeyState.KeyToggleState != InputData->KeyState.KeyToggleState)) {
+ return FALSE;
+ }
+
+ return TRUE;
+
+}
+
+/**
+ Event notification function for SIMPLE_TEXT_IN.WaitForKey event
+ Signal the event if there is key available
+
+ @param Event the event object
+ @param Context waitting context
+
+**/
+VOID
+EFIAPI
+VirtualKeyboardWaitForKey (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ //
+ // Stall 1ms to give a chance to let other driver interrupt this routine
+ // for their timer event.
+ // e.g. UI setup or Shell, other drivers which are driven by timer event
+ // will have a bad performance during this period,
+ // e.g. usb keyboard driver.
+ // Add a stall period can greatly increate other driver performance during
+ // the WaitForKey is recursivly invoked. 1ms delay will make little impact
+ // to the thunk keyboard driver, and user can not feel the delay at all when
+ // input.
+ //
+ gBS->Stall (1000);
+ //
+ // Use TimerEvent callback function to check whether there's any key pressed
+ //
+ VirtualKeyboardTimerHandler (NULL, VIRTUAL_KEYBOARD_DEV_FROM_THIS (Context));
+
+ if (!EFI_ERROR (VirtualKeyboardCheckForKey (Context))) {
+ gBS->SignalEvent (Event);
+ }
+}
+
+/**
+ Event notification function for SIMPLE_TEXT_INPUT_EX_PROTOCOL.WaitForKeyEx
+ event. Signal the event if there is key available
+
+ @param Event event object
+ @param Context waiting context
+
+**/
+VOID
+EFIAPI
+VirtualKeyboardWaitForKeyEx (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+
+{
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+
+ VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (Context);
+ VirtualKeyboardWaitForKey (Event, &VirtualKeyboardPrivate->SimpleTextIn);
+
+}
+
+//
+// EFI Simple Text In Protocol Functions
+//
+/**
+ Reset the Keyboard and do BAT test for it, if (ExtendedVerification == TRUE)
+ then do some extra keyboard validations.
+
+ @param This Pointer of simple text Protocol.
+ @param ExtendedVerification Whether perform the extra validation of
+ keyboard. True: perform; FALSE: skip.
+
+ @retval EFI_SUCCESS The command byte is written successfully.
+ @retval EFI_DEVICE_ERROR Errors occurred during resetting keyboard.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardReset (
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+ IN BOOLEAN ExtendedVerification
+ )
+{
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ EFI_STATUS Status;
+ EFI_TPL OldTpl;
+
+ VirtualKeyboardPrivate = VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);
+
+ //
+ // Raise TPL to avoid mouse operation impact
+ //
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ if (VirtualKeyboardPrivate->PlatformVirtual &&
+ VirtualKeyboardPrivate->PlatformVirtual->Reset) {
+ Status = VirtualKeyboardPrivate->PlatformVirtual->Reset ();
+ } else {
+ Status = EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // resume priority of task level
+ //
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+/**
+ Reset the input device and optionaly run diagnostics
+
+ @param This Protocol instance pointer.
+ @param ExtendedVerification Driver may perform diagnostics on reset.
+
+ @retval EFI_SUCCESS The device was reset.
+ @retval EFI_DEVICE_ERROR The device is not functioning properly and
+ could not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardResetEx (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN BOOLEAN ExtendedVerification
+ )
+{
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ EFI_STATUS Status;
+ EFI_TPL OldTpl;
+
+ VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);
+
+ Status = VirtualKeyboardPrivate->SimpleTextIn.Reset (
+ &VirtualKeyboardPrivate->SimpleTextIn,
+ ExtendedVerification
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ gBS->RestoreTPL (OldTpl);
+
+ return EFI_SUCCESS;
+
+}
+
+/**
+ Reads the next keystroke from the input device. The WaitForKey Event can
+ be used to test for existance of a keystroke via WaitForEvent () call.
+
+ @param VirtualKeyboardPrivate Virtualkeyboard driver private structure.
+ @param KeyData A pointer to a buffer that is filled in
+ with the keystroke state data for the key
+ that was pressed.
+
+ @retval EFI_SUCCESS The keystroke information was returned.
+ @retval EFI_NOT_READY There was no keystroke data availiable.
+ @retval EFI_DEVICE_ERROR The keystroke information was not returned
+ due to hardware errors.
+ @retval EFI_INVALID_PARAMETER KeyData is NULL.
+
+**/
+EFI_STATUS
+KeyboardReadKeyStrokeWorker (
+ IN VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate,
+ OUT EFI_KEY_DATA *KeyData
+ )
+{
+ EFI_STATUS Status;
+ EFI_TPL OldTpl;
+ if (KeyData == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Use TimerEvent callback function to check whether there's any key pressed
+ //
+
+ //
+ // Stall 1ms to give a chance to let other driver interrupt this routine for
+ // their timer event.
+ // e.g. OS loader, other drivers which are driven by timer event will have a
+ // bad performance during this period,
+ // e.g. usb keyboard driver.
+ // Add a stall period can greatly increate other driver performance during
+ // the WaitForKey is recursivly invoked. 1ms delay will make little impact
+ // to the thunk keyboard driver, and user can not feel the delay at all when
+ // input.
+ //
+ gBS->Stall (1000);
+
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ VirtualKeyboardTimerHandler (NULL, VirtualKeyboardPrivate);
+ //
+ // If there's no key, just return
+ //
+ Status = CheckQueue (&VirtualKeyboardPrivate->Queue);
+ if (EFI_ERROR (Status)) {
+ gBS->RestoreTPL (OldTpl);
+ return EFI_NOT_READY;
+ }
+
+ Status = Dequeue (&VirtualKeyboardPrivate->Queue, KeyData);
+
+ gBS->RestoreTPL (OldTpl);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Read out the scan code of the key that has just been stroked.
+
+ @param This Pointer of simple text Protocol.
+ @param Key Pointer for store the key that read out.
+
+ @retval EFI_SUCCESS The key is read out successfully.
+ @retval other The key reading failed.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardReadKeyStroke (
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+ OUT EFI_INPUT_KEY *Key
+ )
+{
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ EFI_STATUS Status;
+ EFI_KEY_DATA KeyData;
+
+ VirtualKeyboardPrivate = VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);
+
+ Status = KeyboardReadKeyStrokeWorker (VirtualKeyboardPrivate, &KeyData);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Convert the Ctrl+[a-z] to Ctrl+[1-26]
+ //
+ if ((KeyData.KeyState.KeyShiftState & (EFI_LEFT_CONTROL_PRESSED | EFI_RIGHT_CONTROL_PRESSED)) != 0) {
+ if (KeyData.Key.UnicodeChar >= L'a' &&
+ KeyData.Key.UnicodeChar <= L'z') {
+ KeyData.Key.UnicodeChar = (CHAR16) (KeyData.Key.UnicodeChar - L'a' + 1);
+ } else if (KeyData.Key.UnicodeChar >= L'A' &&
+ KeyData.Key.UnicodeChar <= L'Z') {
+ KeyData.Key.UnicodeChar = (CHAR16) (KeyData.Key.UnicodeChar - L'A' + 1);
+ }
+ }
+
+ CopyMem (Key, &KeyData.Key, sizeof (EFI_INPUT_KEY));
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Reads the next keystroke from the input device. The WaitForKey Event can
+ be used to test for existance of a keystroke via WaitForEvent () call.
+
+ @param This Protocol instance pointer.
+ @param KeyData A pointer to a buffer that is filled in with the
+ keystroke state data for the key that was pressed.
+
+ @retval EFI_SUCCESS The keystroke information was returned.
+ @retval EFI_NOT_READY There was no keystroke data availiable.
+ @retval EFI_DEVICE_ERROR The keystroke information was not returned
+ due to hardware errors.
+ @retval EFI_INVALID_PARAMETER KeyData is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardReadKeyStrokeEx (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ OUT EFI_KEY_DATA *KeyData
+ )
+{
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+
+ if (KeyData == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);
+
+ return KeyboardReadKeyStrokeWorker (VirtualKeyboardPrivate, KeyData);
+
+}
+
+/**
+ Set certain state for the input device.
+
+ @param This Protocol instance pointer.
+ @param KeyToggleState A pointer to the EFI_KEY_TOGGLE_STATE to set the
+ state for the input device.
+
+ @retval EFI_SUCCESS The device state was set successfully.
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly and
+ could not have the setting adjusted.
+ @retval EFI_UNSUPPORTED The device does not have the ability to set
+ its state.
+ @retval EFI_INVALID_PARAMETER KeyToggleState is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardSetState (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN EFI_KEY_TOGGLE_STATE *KeyToggleState
+ )
+{
+ if (KeyToggleState == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Register a notification function for a particular keystroke for the
+ input device.
+
+ @param This Protocol instance pointer.
+ @param KeyData A pointer to a buffer that is filled in with
+ the keystroke information data for the key
+ that was pressed.
+ @param KeyNotificationFunction Points to the function to be called when the
+ key sequence is typed specified by KeyData.
+ @param NotifyHandle Points to the unique handle assigned to the
+ registered notification.
+
+
+ @retval EFI_SUCCESS The notification function was registered
+ successfully.
+ @retval EFI_OUT_OF_RESOURCES Unable to allocate resources for necesssary
+ data structures.
+ @retval EFI_INVALID_PARAMETER KeyData or NotifyHandle is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardRegisterKeyNotify (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN EFI_KEY_DATA *KeyData,
+ IN EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction,
+ OUT VOID **NotifyHandle
+ )
+{
+ EFI_STATUS Status;
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ EFI_TPL OldTpl;
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *NewNotify;
+ LIST_ENTRY *Link;
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
+
+ if (KeyData == NULL ||
+ NotifyHandle == NULL ||
+ KeyNotificationFunction == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);
+
+ //
+ // Enter critical section
+ //
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ //
+ // Return EFI_SUCCESS if the (KeyData, NotificationFunction) is already
+ // registered.
+ //
+ for (Link = VirtualKeyboardPrivate->NotifyList.ForwardLink;
+ Link != &VirtualKeyboardPrivate->NotifyList;
+ Link = Link->ForwardLink) {
+ CurrentNotify = CR (
+ Link,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,
+ NotifyEntry,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE
+ );
+ if (IsKeyRegistered (&CurrentNotify->KeyData, KeyData)) {
+ if (CurrentNotify->KeyNotificationFn == KeyNotificationFunction) {
+ *NotifyHandle = CurrentNotify;
+ Status = EFI_SUCCESS;
+ goto Exit;
+ }
+ }
+ }
+
+ //
+ // Allocate resource to save the notification function
+ //
+
+ NewNotify = (VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *) AllocateZeroPool (sizeof (VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY));
+ if (NewNotify == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+
+ NewNotify->Signature = VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE;
+ NewNotify->KeyNotificationFn = KeyNotificationFunction;
+ CopyMem (&NewNotify->KeyData, KeyData, sizeof (EFI_KEY_DATA));
+ InsertTailList (&VirtualKeyboardPrivate->NotifyList, &NewNotify->NotifyEntry);
+
+ *NotifyHandle = NewNotify;
+ Status = EFI_SUCCESS;
+
+Exit:
+ //
+ // Leave critical section and return
+ //
+ gBS->RestoreTPL (OldTpl);
+ return Status;
+
+}
+
+/**
+ Remove a registered notification function from a particular keystroke.
+
+ @param This Protocol instance pointer.
+ @param NotificationHandle The handle of the notification function
+ being unregistered.
+
+ @retval EFI_SUCCESS The notification function was unregistered
+ successfully.
+ @retval EFI_INVALID_PARAMETER The NotificationHandle is invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardUnregisterKeyNotify (
+ IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+ IN VOID *NotificationHandle
+ )
+{
+ EFI_STATUS Status;
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ EFI_TPL OldTpl;
+ LIST_ENTRY *Link;
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
+
+ //
+ // Check incoming notification handle
+ //
+ if (NotificationHandle == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (((VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *) NotificationHandle)->Signature !=
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);
+
+ //
+ // Enter critical section
+ //
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ for (Link = VirtualKeyboardPrivate->NotifyList.ForwardLink;
+ Link != &VirtualKeyboardPrivate->NotifyList;
+ Link = Link->ForwardLink) {
+ CurrentNotify = CR (
+ Link,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,
+ NotifyEntry,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE
+ );
+ if (CurrentNotify == NotificationHandle) {
+ //
+ // Remove the notification function from NotifyList and free resources
+ //
+ RemoveEntryList (&CurrentNotify->NotifyEntry);
+
+ Status = EFI_SUCCESS;
+ goto Exit;
+ }
+ }
+
+ //
+ // Can not find the specified Notification Handle
+ //
+ Status = EFI_INVALID_PARAMETER;
+
+Exit:
+ //
+ // Leave critical section and return
+ //
+ gBS->RestoreTPL (OldTpl);
+ return Status;
+}
+
+/**
+ Timer event handler: read a series of scancodes from 8042
+ and put them into memory scancode buffer.
+ it read as much scancodes to either fill
+ the memory buffer or empty the keyboard buffer.
+ It is registered as running under TPL_NOTIFY
+
+ @param Event The timer event
+ @param Context A KEYBOARD_CONSOLE_IN_DEV pointer
+
+**/
+VOID
+EFIAPI
+VirtualKeyboardTimerHandler (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_TPL OldTpl;
+ LIST_ENTRY *Link;
+ EFI_KEY_DATA KeyData;
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ VIRTUAL_KBD_KEY VirtualKey;
+
+ VirtualKeyboardPrivate = Context;
+
+ //
+ // Enter critical section
+ //
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ if (VirtualKeyboardPrivate->PlatformVirtual &&
+ VirtualKeyboardPrivate->PlatformVirtual->Query) {
+ if (VirtualKeyboardPrivate->PlatformVirtual->Query (&VirtualKey) ==
+ FALSE) {
+ goto Exit;
+ }
+ // Found key
+ KeyData.Key.ScanCode = VirtualKey.Key.ScanCode;
+ KeyData.Key.UnicodeChar = VirtualKey.Key.UnicodeChar;
+ KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;
+ KeyData.KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;
+ if (VirtualKeyboardPrivate->PlatformVirtual->Clear) {
+ VirtualKeyboardPrivate->PlatformVirtual->Clear (&VirtualKey);
+ }
+ } else {
+ goto Exit;
+ }
+
+ //
+ // Signal KeyNotify process event if this key pressed matches any key registered.
+ //
+ for (Link = VirtualKeyboardPrivate->NotifyList.ForwardLink;
+ Link != &VirtualKeyboardPrivate->NotifyList;
+ Link = Link->ForwardLink) {
+ CurrentNotify = CR (
+ Link,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,
+ NotifyEntry,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE
+ );
+ if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {
+ //
+ // The key notification function needs to run at TPL_CALLBACK
+ // while current TPL is TPL_NOTIFY. It will be invoked in
+ // KeyNotifyProcessHandler() which runs at TPL_CALLBACK.
+ //
+ Enqueue (&VirtualKeyboardPrivate->QueueForNotify, &KeyData);
+ gBS->SignalEvent (VirtualKeyboardPrivate->KeyNotifyProcessEvent);
+ }
+ }
+
+ Enqueue (&VirtualKeyboardPrivate->Queue, &KeyData);
+
+Exit:
+ //
+ // Leave critical section and return
+ //
+ gBS->RestoreTPL (OldTpl);
+}
+
+/**
+ Process key notify.
+
+ @param Event Indicates the event that invoke this function.
+ @param Context Indicates the calling context.
+**/
+VOID
+EFIAPI
+KeyNotifyProcessHandler (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_STATUS Status;
+ VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;
+ EFI_KEY_DATA KeyData;
+ LIST_ENTRY *Link;
+ LIST_ENTRY *NotifyList;
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
+ EFI_TPL OldTpl;
+
+ VirtualKeyboardPrivate = (VIRTUAL_KEYBOARD_DEV *) Context;
+
+ //
+ // Invoke notification functions.
+ //
+ NotifyList = &VirtualKeyboardPrivate->NotifyList;
+ while (TRUE) {
+ //
+ // Enter critical section
+ //
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+ Status = Dequeue (&VirtualKeyboardPrivate->QueueForNotify, &KeyData);
+ //
+ // Leave critical section
+ //
+ gBS->RestoreTPL (OldTpl);
+ if (EFI_ERROR (Status)) {
+ break;
+ }
+ for (Link = GetFirstNode (NotifyList);
+ !IsNull (NotifyList, Link);
+ Link = GetNextNode (NotifyList, Link)) {
+ CurrentNotify = CR (Link,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,
+ NotifyEntry,
+ VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE
+ );
+ if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {
+ CurrentNotify->KeyNotificationFn (&KeyData);
+ }
+ }
+ }
+}
+
+/**
+ The user Entry Point for module VirtualKeyboard. The user code starts with
+ this function.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval other Some error occurs when executing this entry point.
+
+**/
+EFI_STATUS
+EFIAPI
+InitializeVirtualKeyboard(
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Install driver model protocol(s).
+ //
+ Status = EfiLibInstallDriverBindingComponentName2 (
+ ImageHandle,
+ SystemTable,
+ &gVirtualKeyboardDriverBinding,
+ ImageHandle,
+ &gVirtualKeyboardComponentName,
+ &gVirtualKeyboardComponentName2
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 4+ messages in thread