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KeyBoard.c
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KeyBoard.c
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/** @file
Helper functions for USB Keyboard Driver.
Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "KeyBoard.h"
USB_KEYBOARD_LAYOUT_PACK_BIN mUsbKeyboardLayoutBin = {
sizeof (USB_KEYBOARD_LAYOUT_PACK_BIN), // Binary size
//
// EFI_HII_PACKAGE_HEADER
//
{
sizeof (USB_KEYBOARD_LAYOUT_PACK_BIN) - sizeof (UINT32),
EFI_HII_PACKAGE_KEYBOARD_LAYOUT
},
1, // LayoutCount
sizeof (USB_KEYBOARD_LAYOUT_PACK_BIN) - sizeof (UINT32) - sizeof (EFI_HII_PACKAGE_HEADER) - sizeof (UINT16), // LayoutLength
USB_KEYBOARD_LAYOUT_KEY_GUID, // KeyGuid
sizeof (UINT16) + sizeof (EFI_GUID) + sizeof (UINT32) + sizeof (UINT8) + (USB_KEYBOARD_KEY_COUNT * sizeof (EFI_KEY_DESCRIPTOR)), // LayoutDescriptorStringOffset
USB_KEYBOARD_KEY_COUNT, // DescriptorCount
{
//
// EFI_KEY_DESCRIPTOR (total number is USB_KEYBOARD_KEY_COUNT)
//
{ EfiKeyC1, 'a', 'A', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyB5, 'b', 'B', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyB3, 'c', 'C', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC3, 'd', 'D', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD3, 'e', 'E', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC4, 'f', 'F', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC5, 'g', 'G', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC6, 'h', 'H', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD8, 'i', 'I', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC7, 'j', 'J', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC8, 'k', 'K', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC9, 'l', 'L', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyB7, 'm', 'M', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyB6, 'n', 'N', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD9, 'o', 'O', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD10, 'p', 'P', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD1, 'q', 'Q', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD4, 'r', 'R', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyC2, 's', 'S', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD5, 't', 'T', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD7, 'u', 'U', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyB4, 'v', 'V', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD2, 'w', 'W', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyB2, 'x', 'X', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyD6, 'y', 'Y', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyB1, 'z', 'Z', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_CAPS_LOCK },
{ EfiKeyE1, '1', '!', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE2, '2', '@', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE3, '3', '#', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE4, '4', '$', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE5, '5', '%', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE6, '6', '^', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE7, '7', '&', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE8, '8', '*', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE9, '9', '(', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE10, '0', ')', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyEnter, 0x0d, 0x0d, 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyEsc, 0x1b, 0x1b, 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyBackSpace, 0x08, 0x08, 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyTab, 0x09, 0x09, 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeySpaceBar, ' ', ' ', 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyE11, '-', '_', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE12, '=', '+', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyD11, '[', '{', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyD12, ']', '}', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyD13, '\\', '|', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyC12, '\\', '|', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyC10, ';', ':', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyC11, '\'', '"', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyE0, '`', '~', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyB8, ',', '<', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyB9, '.', '>', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyB10, '/', '?', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT },
{ EfiKeyCapsLock, 0x00, 0x00, 0, 0, EFI_CAPS_LOCK_MODIFIER, 0 },
{ EfiKeyF1, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_ONE_MODIFIER, 0 },
{ EfiKeyF2, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_TWO_MODIFIER, 0 },
{ EfiKeyF3, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_THREE_MODIFIER, 0 },
{ EfiKeyF4, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_FOUR_MODIFIER, 0 },
{ EfiKeyF5, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_FIVE_MODIFIER, 0 },
{ EfiKeyF6, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_SIX_MODIFIER, 0 },
{ EfiKeyF7, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_SEVEN_MODIFIER, 0 },
{ EfiKeyF8, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_EIGHT_MODIFIER, 0 },
{ EfiKeyF9, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_NINE_MODIFIER, 0 },
{ EfiKeyF10, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_TEN_MODIFIER, 0 },
{ EfiKeyF11, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_ELEVEN_MODIFIER, 0 },
{ EfiKeyF12, 0x00, 0x00, 0, 0, EFI_FUNCTION_KEY_TWELVE_MODIFIER, 0 },
{ EfiKeyPrint, 0x00, 0x00, 0, 0, EFI_PRINT_MODIFIER, 0 },
{ EfiKeySLck, 0x00, 0x00, 0, 0, EFI_SCROLL_LOCK_MODIFIER, 0 },
{ EfiKeyPause, 0x00, 0x00, 0, 0, EFI_PAUSE_MODIFIER, 0 },
{ EfiKeyIns, 0x00, 0x00, 0, 0, EFI_INSERT_MODIFIER, 0 },
{ EfiKeyHome, 0x00, 0x00, 0, 0, EFI_HOME_MODIFIER, 0 },
{ EfiKeyPgUp, 0x00, 0x00, 0, 0, EFI_PAGE_UP_MODIFIER, 0 },
{ EfiKeyDel, 0x00, 0x00, 0, 0, EFI_DELETE_MODIFIER, 0 },
{ EfiKeyEnd, 0x00, 0x00, 0, 0, EFI_END_MODIFIER, 0 },
{ EfiKeyPgDn, 0x00, 0x00, 0, 0, EFI_PAGE_DOWN_MODIFIER, 0 },
{ EfiKeyRightArrow, 0x00, 0x00, 0, 0, EFI_RIGHT_ARROW_MODIFIER, 0 },
{ EfiKeyLeftArrow, 0x00, 0x00, 0, 0, EFI_LEFT_ARROW_MODIFIER, 0 },
{ EfiKeyDownArrow, 0x00, 0x00, 0, 0, EFI_DOWN_ARROW_MODIFIER, 0 },
{ EfiKeyUpArrow, 0x00, 0x00, 0, 0, EFI_UP_ARROW_MODIFIER, 0 },
{ EfiKeyNLck, 0x00, 0x00, 0, 0, EFI_NUM_LOCK_MODIFIER, 0 },
{ EfiKeySlash, '/', '/', 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyAsterisk, '*', '*', 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyMinus, '-', '-', 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyPlus, '+', '+', 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyEnter, 0x0d, 0x0d, 0, 0, EFI_NULL_MODIFIER, 0 },
{ EfiKeyOne, '1', '1', 0, 0, EFI_END_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyTwo, '2', '2', 0, 0, EFI_DOWN_ARROW_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyThree, '3', '3', 0, 0, EFI_PAGE_DOWN_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyFour, '4', '4', 0, 0, EFI_LEFT_ARROW_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyFive, '5', '5', 0, 0, EFI_NULL_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeySix, '6', '6', 0, 0, EFI_RIGHT_ARROW_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeySeven, '7', '7', 0, 0, EFI_HOME_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyEight, '8', '8', 0, 0, EFI_UP_ARROW_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyNine, '9', '9', 0, 0, EFI_PAGE_UP_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyZero, '0', '0', 0, 0, EFI_INSERT_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyPeriod, '.', '.', 0, 0, EFI_DELETE_MODIFIER, EFI_AFFECTED_BY_STANDARD_SHIFT | EFI_AFFECTED_BY_NUM_LOCK },
{ EfiKeyA4, 0x00, 0x00, 0, 0, EFI_MENU_MODIFIER, 0 },
{ EfiKeyLCtrl, 0, 0, 0, 0, EFI_LEFT_CONTROL_MODIFIER, 0 },
{ EfiKeyLShift, 0, 0, 0, 0, EFI_LEFT_SHIFT_MODIFIER, 0 },
{ EfiKeyLAlt, 0, 0, 0, 0, EFI_LEFT_ALT_MODIFIER, 0 },
{ EfiKeyA0, 0, 0, 0, 0, EFI_LEFT_LOGO_MODIFIER, 0 },
{ EfiKeyRCtrl, 0, 0, 0, 0, EFI_RIGHT_CONTROL_MODIFIER, 0 },
{ EfiKeyRShift, 0, 0, 0, 0, EFI_RIGHT_SHIFT_MODIFIER, 0 },
{ EfiKeyA2, 0, 0, 0, 0, EFI_RIGHT_ALT_MODIFIER, 0 },
{ EfiKeyA3, 0, 0, 0, 0, EFI_RIGHT_LOGO_MODIFIER, 0 },
},
1, // DescriptionCount
{ 'e', 'n', '-', 'U', 'S' }, // RFC4646 language code
' ', // Space
{ 'E', 'n', 'g', 'l', 'i', 's', 'h', ' ', 'K', 'e', 'y', 'b', 'o', 'a', 'r', 'd', '\0' }, // DescriptionString[]
};
//
// EFI_KEY to USB Keycode conversion table
// EFI_KEY is defined in UEFI spec.
// USB Keycode is defined in USB HID Firmware spec.
//
UINT8 EfiKeyToUsbKeyCodeConvertionTable[] = {
0xe0, // EfiKeyLCtrl
0xe3, // EfiKeyA0
0xe2, // EfiKeyLAlt
0x2c, // EfiKeySpaceBar
0xe6, // EfiKeyA2
0xe7, // EfiKeyA3
0x65, // EfiKeyA4
0xe4, // EfiKeyRCtrl
0x50, // EfiKeyLeftArrow
0x51, // EfiKeyDownArrow
0x4F, // EfiKeyRightArrow
0x62, // EfiKeyZero
0x63, // EfiKeyPeriod
0x28, // EfiKeyEnter
0xe1, // EfiKeyLShift
0x64, // EfiKeyB0
0x1D, // EfiKeyB1
0x1B, // EfiKeyB2
0x06, // EfiKeyB3
0x19, // EfiKeyB4
0x05, // EfiKeyB5
0x11, // EfiKeyB6
0x10, // EfiKeyB7
0x36, // EfiKeyB8
0x37, // EfiKeyB9
0x38, // EfiKeyB10
0xe5, // EfiKeyRShift
0x52, // EfiKeyUpArrow
0x59, // EfiKeyOne
0x5A, // EfiKeyTwo
0x5B, // EfiKeyThree
0x39, // EfiKeyCapsLock
0x04, // EfiKeyC1
0x16, // EfiKeyC2
0x07, // EfiKeyC3
0x09, // EfiKeyC4
0x0A, // EfiKeyC5
0x0B, // EfiKeyC6
0x0D, // EfiKeyC7
0x0E, // EfiKeyC8
0x0F, // EfiKeyC9
0x33, // EfiKeyC10
0x34, // EfiKeyC11
0x32, // EfiKeyC12
0x5C, // EfiKeyFour
0x5D, // EfiKeyFive
0x5E, // EfiKeySix
0x57, // EfiKeyPlus
0x2B, // EfiKeyTab
0x14, // EfiKeyD1
0x1A, // EfiKeyD2
0x08, // EfiKeyD3
0x15, // EfiKeyD4
0x17, // EfiKeyD5
0x1C, // EfiKeyD6
0x18, // EfiKeyD7
0x0C, // EfiKeyD8
0x12, // EfiKeyD9
0x13, // EfiKeyD10
0x2F, // EfiKeyD11
0x30, // EfiKeyD12
0x31, // EfiKeyD13
0x4C, // EfiKeyDel
0x4D, // EfiKeyEnd
0x4E, // EfiKeyPgDn
0x5F, // EfiKeySeven
0x60, // EfiKeyEight
0x61, // EfiKeyNine
0x35, // EfiKeyE0
0x1E, // EfiKeyE1
0x1F, // EfiKeyE2
0x20, // EfiKeyE3
0x21, // EfiKeyE4
0x22, // EfiKeyE5
0x23, // EfiKeyE6
0x24, // EfiKeyE7
0x25, // EfiKeyE8
0x26, // EfiKeyE9
0x27, // EfiKeyE10
0x2D, // EfiKeyE11
0x2E, // EfiKeyE12
0x2A, // EfiKeyBackSpace
0x49, // EfiKeyIns
0x4A, // EfiKeyHome
0x4B, // EfiKeyPgUp
0x53, // EfiKeyNLck
0x54, // EfiKeySlash
0x55, // EfiKeyAsterisk
0x56, // EfiKeyMinus
0x29, // EfiKeyEsc
0x3A, // EfiKeyF1
0x3B, // EfiKeyF2
0x3C, // EfiKeyF3
0x3D, // EfiKeyF4
0x3E, // EfiKeyF5
0x3F, // EfiKeyF6
0x40, // EfiKeyF7
0x41, // EfiKeyF8
0x42, // EfiKeyF9
0x43, // EfiKeyF10
0x44, // EfiKeyF11
0x45, // EfiKeyF12
0x46, // EfiKeyPrint
0x47, // EfiKeySLck
0x48 // EfiKeyPause
};
//
// Keyboard modifier value to EFI Scan Code conversion table
// EFI Scan Code and the modifier values are defined in UEFI spec.
//
UINT8 ModifierValueToEfiScanCodeConvertionTable[] = {
SCAN_NULL, // EFI_NULL_MODIFIER
SCAN_NULL, // EFI_LEFT_CONTROL_MODIFIER
SCAN_NULL, // EFI_RIGHT_CONTROL_MODIFIER
SCAN_NULL, // EFI_LEFT_ALT_MODIFIER
SCAN_NULL, // EFI_RIGHT_ALT_MODIFIER
SCAN_NULL, // EFI_ALT_GR_MODIFIER
SCAN_INSERT, // EFI_INSERT_MODIFIER
SCAN_DELETE, // EFI_DELETE_MODIFIER
SCAN_PAGE_DOWN, // EFI_PAGE_DOWN_MODIFIER
SCAN_PAGE_UP, // EFI_PAGE_UP_MODIFIER
SCAN_HOME, // EFI_HOME_MODIFIER
SCAN_END, // EFI_END_MODIFIER
SCAN_NULL, // EFI_LEFT_SHIFT_MODIFIER
SCAN_NULL, // EFI_RIGHT_SHIFT_MODIFIER
SCAN_NULL, // EFI_CAPS_LOCK_MODIFIER
SCAN_NULL, // EFI_NUM_LOCK_MODIFIER
SCAN_LEFT, // EFI_LEFT_ARROW_MODIFIER
SCAN_RIGHT, // EFI_RIGHT_ARROW_MODIFIER
SCAN_DOWN, // EFI_DOWN_ARROW_MODIFIER
SCAN_UP, // EFI_UP_ARROW_MODIFIER
SCAN_NULL, // EFI_NS_KEY_MODIFIER
SCAN_NULL, // EFI_NS_KEY_DEPENDENCY_MODIFIER
SCAN_F1, // EFI_FUNCTION_KEY_ONE_MODIFIER
SCAN_F2, // EFI_FUNCTION_KEY_TWO_MODIFIER
SCAN_F3, // EFI_FUNCTION_KEY_THREE_MODIFIER
SCAN_F4, // EFI_FUNCTION_KEY_FOUR_MODIFIER
SCAN_F5, // EFI_FUNCTION_KEY_FIVE_MODIFIER
SCAN_F6, // EFI_FUNCTION_KEY_SIX_MODIFIER
SCAN_F7, // EFI_FUNCTION_KEY_SEVEN_MODIFIER
SCAN_F8, // EFI_FUNCTION_KEY_EIGHT_MODIFIER
SCAN_F9, // EFI_FUNCTION_KEY_NINE_MODIFIER
SCAN_F10, // EFI_FUNCTION_KEY_TEN_MODIFIER
SCAN_F11, // EFI_FUNCTION_KEY_ELEVEN_MODIFIER
SCAN_F12, // EFI_FUNCTION_KEY_TWELVE_MODIFIER
//
// For Partial Keystroke support
//
SCAN_NULL, // EFI_PRINT_MODIFIER
SCAN_NULL, // EFI_SYS_REQUEST_MODIFIER
SCAN_NULL, // EFI_SCROLL_LOCK_MODIFIER
SCAN_PAUSE, // EFI_PAUSE_MODIFIER
SCAN_NULL, // EFI_BREAK_MODIFIER
SCAN_NULL, // EFI_LEFT_LOGO_MODIFIER
SCAN_NULL, // EFI_RIGHT_LOGO_MODIFER
SCAN_NULL, // EFI_MENU_MODIFER
};
/**
Initialize Key Convention Table by using default keyboard layout.
@param UsbKeyboardDevice The USB_KB_DEV instance.
@retval EFI_SUCCESS The default keyboard layout was installed successfully
@retval Others Failure to install default keyboard layout.
**/
EFI_STATUS
InstallDefaultKeyboardLayout (
IN OUT USB_KB_DEV *UsbKeyboardDevice
)
{
EFI_STATUS Status;
EFI_HII_DATABASE_PROTOCOL *HiiDatabase;
EFI_HII_HANDLE HiiHandle;
//
// Locate Hii database protocol
//
Status = gBS->LocateProtocol (
&gEfiHiiDatabaseProtocolGuid,
NULL,
(VOID **)&HiiDatabase
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Install Keyboard Layout package to HII database
//
HiiHandle = HiiAddPackages (
&gUsbKeyboardLayoutPackageGuid,
UsbKeyboardDevice->ControllerHandle,
&mUsbKeyboardLayoutBin,
NULL
);
if (HiiHandle == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Set current keyboard layout
//
Status = HiiDatabase->SetKeyboardLayout (HiiDatabase, &gUsbKeyboardLayoutKeyGuid);
return Status;
}
/**
Uses USB I/O to check whether the device is a USB keyboard device.
@param UsbIo Pointer to a USB I/O protocol instance.
@retval TRUE Device is a USB keyboard device.
@retval FALSE Device is a not USB keyboard device.
**/
BOOLEAN
IsUSBKeyboard (
IN EFI_USB_IO_PROTOCOL *UsbIo
)
{
EFI_STATUS Status;
EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;
//
// Get the default interface descriptor
//
Status = UsbIo->UsbGetInterfaceDescriptor (
UsbIo,
&InterfaceDescriptor
);
if (EFI_ERROR (Status)) {
return FALSE;
}
if ((InterfaceDescriptor.InterfaceClass == CLASS_HID) &&
(InterfaceDescriptor.InterfaceSubClass == SUBCLASS_BOOT) &&
(InterfaceDescriptor.InterfaceProtocol == PROTOCOL_KEYBOARD)
)
{
return TRUE;
}
return FALSE;
}
/**
Get current keyboard layout from HII database.
@return Pointer to HII Keyboard Layout.
NULL means failure occurred while trying to get keyboard layout.
**/
EFI_HII_KEYBOARD_LAYOUT *
GetCurrentKeyboardLayout (
VOID
)
{
EFI_STATUS Status;
EFI_HII_DATABASE_PROTOCOL *HiiDatabase;
EFI_HII_KEYBOARD_LAYOUT *KeyboardLayout;
UINT16 Length;
//
// Locate HII Database Protocol
//
Status = gBS->LocateProtocol (
&gEfiHiiDatabaseProtocolGuid,
NULL,
(VOID **)&HiiDatabase
);
if (EFI_ERROR (Status)) {
return NULL;
}
//
// Get current keyboard layout from HII database
//
Length = 0;
KeyboardLayout = NULL;
Status = HiiDatabase->GetKeyboardLayout (
HiiDatabase,
NULL,
&Length,
KeyboardLayout
);
if (Status == EFI_BUFFER_TOO_SMALL) {
KeyboardLayout = AllocatePool (Length);
ASSERT (KeyboardLayout != NULL);
Status = HiiDatabase->GetKeyboardLayout (
HiiDatabase,
NULL,
&Length,
KeyboardLayout
);
if (EFI_ERROR (Status)) {
FreePool (KeyboardLayout);
KeyboardLayout = NULL;
}
}
return KeyboardLayout;
}
/**
Find Key Descriptor in Key Convertion Table given its USB keycode.
@param UsbKeyboardDevice The USB_KB_DEV instance.
@param KeyCode USB Keycode.
@return The Key Descriptor in Key Convertion Table.
NULL means not found.
**/
EFI_KEY_DESCRIPTOR *
GetKeyDescriptor (
IN USB_KB_DEV *UsbKeyboardDevice,
IN UINT8 KeyCode
)
{
UINT8 Index;
//
// Make sure KeyCode is in the range of [0x4, 0x65] or [0xe0, 0xe7]
//
if ((!USBKBD_VALID_KEYCODE (KeyCode)) || ((KeyCode > 0x65) && (KeyCode < 0xe0)) || (KeyCode > 0xe7)) {
return NULL;
}
//
// Calculate the index of Key Descriptor in Key Convertion Table
//
if (KeyCode <= 0x65) {
Index = (UINT8)(KeyCode - 4);
} else {
Index = (UINT8)(KeyCode - 0xe0 + NUMBER_OF_VALID_NON_MODIFIER_USB_KEYCODE);
}
return &UsbKeyboardDevice->KeyConvertionTable[Index];
}
/**
Find Non-Spacing key for given Key descriptor.
@param UsbKeyboardDevice The USB_KB_DEV instance.
@param KeyDescriptor Key descriptor.
@return The Non-Spacing key corresponding to KeyDescriptor
NULL means not found.
**/
USB_NS_KEY *
FindUsbNsKey (
IN USB_KB_DEV *UsbKeyboardDevice,
IN EFI_KEY_DESCRIPTOR *KeyDescriptor
)
{
LIST_ENTRY *Link;
LIST_ENTRY *NsKeyList;
USB_NS_KEY *UsbNsKey;
NsKeyList = &UsbKeyboardDevice->NsKeyList;
Link = GetFirstNode (NsKeyList);
while (!IsNull (NsKeyList, Link)) {
UsbNsKey = USB_NS_KEY_FORM_FROM_LINK (Link);
if (UsbNsKey->NsKey[0].Key == KeyDescriptor->Key) {
return UsbNsKey;
}
Link = GetNextNode (NsKeyList, Link);
}
return NULL;
}
/**
Find physical key definition for a given key descriptor.
For a specified non-spacing key, there are a list of physical
keys following it. This function traverses the list of
physical keys and tries to find the physical key matching
the KeyDescriptor.
@param UsbNsKey The non-spacing key information.
@param KeyDescriptor The key descriptor.
@return The physical key definition.
If no physical key is found, parameter KeyDescriptor is returned.
**/
EFI_KEY_DESCRIPTOR *
FindPhysicalKey (
IN USB_NS_KEY *UsbNsKey,
IN EFI_KEY_DESCRIPTOR *KeyDescriptor
)
{
UINTN Index;
EFI_KEY_DESCRIPTOR *PhysicalKey;
PhysicalKey = &UsbNsKey->NsKey[1];
for (Index = 0; Index < UsbNsKey->KeyCount; Index++) {
if (KeyDescriptor->Key == PhysicalKey->Key) {
return PhysicalKey;
}
PhysicalKey++;
}
//
// No children definition matched, return original key
//
return KeyDescriptor;
}
/**
The notification function for EFI_HII_SET_KEYBOARD_LAYOUT_EVENT_GUID.
This function is registered to event of EFI_HII_SET_KEYBOARD_LAYOUT_EVENT_GUID
group type, which will be triggered by EFI_HII_DATABASE_PROTOCOL.SetKeyboardLayout().
It tries to get current keyboard layout from HII database.
@param Event Event being signaled.
@param Context Points to USB_KB_DEV instance.
**/
VOID
EFIAPI
SetKeyboardLayoutEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
USB_KB_DEV *UsbKeyboardDevice;
EFI_HII_KEYBOARD_LAYOUT *KeyboardLayout;
EFI_KEY_DESCRIPTOR TempKey;
EFI_KEY_DESCRIPTOR *KeyDescriptor;
EFI_KEY_DESCRIPTOR *TableEntry;
EFI_KEY_DESCRIPTOR *NsKey;
USB_NS_KEY *UsbNsKey;
UINTN Index;
UINTN Index2;
UINTN KeyCount;
UINT8 KeyCode;
UsbKeyboardDevice = (USB_KB_DEV *)Context;
if (UsbKeyboardDevice->Signature != USB_KB_DEV_SIGNATURE) {
return;
}
//
// Try to get current keyboard layout from HII database
//
KeyboardLayout = GetCurrentKeyboardLayout ();
if (KeyboardLayout == NULL) {
return;
}
//
// Re-allocate resource for KeyConvertionTable
//
ReleaseKeyboardLayoutResources (UsbKeyboardDevice);
UsbKeyboardDevice->KeyConvertionTable = AllocateZeroPool ((NUMBER_OF_VALID_USB_KEYCODE)*sizeof (EFI_KEY_DESCRIPTOR));
ASSERT (UsbKeyboardDevice->KeyConvertionTable != NULL);
//
// Traverse the list of key descriptors following the header of EFI_HII_KEYBOARD_LAYOUT
//
KeyDescriptor = (EFI_KEY_DESCRIPTOR *)(((UINT8 *)KeyboardLayout) + sizeof (EFI_HII_KEYBOARD_LAYOUT));
for (Index = 0; Index < KeyboardLayout->DescriptorCount; Index++) {
//
// Copy from HII keyboard layout package binary for alignment
//
CopyMem (&TempKey, KeyDescriptor, sizeof (EFI_KEY_DESCRIPTOR));
//
// Fill the key into KeyConvertionTable, whose index is calculated from USB keycode.
//
KeyCode = EfiKeyToUsbKeyCodeConvertionTable[(UINT8)(TempKey.Key)];
TableEntry = GetKeyDescriptor (UsbKeyboardDevice, KeyCode);
if (TableEntry == NULL) {
ReleaseKeyboardLayoutResources (UsbKeyboardDevice);
FreePool (KeyboardLayout);
return;
}
CopyMem (TableEntry, KeyDescriptor, sizeof (EFI_KEY_DESCRIPTOR));
//
// For non-spacing key, create the list with a non-spacing key followed by physical keys.
//
if (TempKey.Modifier == EFI_NS_KEY_MODIFIER) {
UsbNsKey = AllocateZeroPool (sizeof (USB_NS_KEY));
ASSERT (UsbNsKey != NULL);
//
// Search for sequential children physical key definitions
//
KeyCount = 0;
NsKey = KeyDescriptor + 1;
for (Index2 = (UINT8)Index + 1; Index2 < KeyboardLayout->DescriptorCount; Index2++) {
CopyMem (&TempKey, NsKey, sizeof (EFI_KEY_DESCRIPTOR));
if (TempKey.Modifier == EFI_NS_KEY_DEPENDENCY_MODIFIER) {
KeyCount++;
} else {
break;
}
NsKey++;
}
UsbNsKey->Signature = USB_NS_KEY_SIGNATURE;
UsbNsKey->KeyCount = KeyCount;
UsbNsKey->NsKey = AllocateCopyPool (
(KeyCount + 1) * sizeof (EFI_KEY_DESCRIPTOR),
KeyDescriptor
);
InsertTailList (&UsbKeyboardDevice->NsKeyList, &UsbNsKey->Link);
//
// Skip over the child physical keys
//
Index += KeyCount;
KeyDescriptor += KeyCount;
}
KeyDescriptor++;
}
//
// There are two EfiKeyEnter, duplicate its key descriptor
//
TableEntry = GetKeyDescriptor (UsbKeyboardDevice, 0x58);
KeyDescriptor = GetKeyDescriptor (UsbKeyboardDevice, 0x28);
CopyMem (TableEntry, KeyDescriptor, sizeof (EFI_KEY_DESCRIPTOR));
FreePool (KeyboardLayout);
}
/**
Destroy resources for keyboard layout.
@param UsbKeyboardDevice The USB_KB_DEV instance.
**/
VOID
ReleaseKeyboardLayoutResources (
IN OUT USB_KB_DEV *UsbKeyboardDevice
)
{
USB_NS_KEY *UsbNsKey;
LIST_ENTRY *Link;
if (UsbKeyboardDevice->KeyConvertionTable != NULL) {
FreePool (UsbKeyboardDevice->KeyConvertionTable);
}
UsbKeyboardDevice->KeyConvertionTable = NULL;
while (!IsListEmpty (&UsbKeyboardDevice->NsKeyList)) {
Link = GetFirstNode (&UsbKeyboardDevice->NsKeyList);
UsbNsKey = USB_NS_KEY_FORM_FROM_LINK (Link);
RemoveEntryList (&UsbNsKey->Link);
FreePool (UsbNsKey->NsKey);
FreePool (UsbNsKey);
}
}
/**
Initialize USB keyboard layout.
This function initializes Key Convertion Table for the USB keyboard device.
It first tries to retrieve layout from HII database. If failed and default
layout is enabled, then it just uses the default layout.
@param UsbKeyboardDevice The USB_KB_DEV instance.
@retval EFI_SUCCESS Initialization succeeded.
@retval EFI_NOT_READY Keyboard layout cannot be retrieve from HII
database, and default layout is disabled.
@retval Other Fail to register event to EFI_HII_SET_KEYBOARD_LAYOUT_EVENT_GUID group.
**/
EFI_STATUS
InitKeyboardLayout (
OUT USB_KB_DEV *UsbKeyboardDevice
)
{
EFI_HII_KEYBOARD_LAYOUT *KeyboardLayout;
EFI_STATUS Status;
UsbKeyboardDevice->KeyConvertionTable = AllocateZeroPool ((NUMBER_OF_VALID_USB_KEYCODE)*sizeof (EFI_KEY_DESCRIPTOR));
ASSERT (UsbKeyboardDevice->KeyConvertionTable != NULL);
InitializeListHead (&UsbKeyboardDevice->NsKeyList);
UsbKeyboardDevice->CurrentNsKey = NULL;
UsbKeyboardDevice->KeyboardLayoutEvent = NULL;
//
// Register event to EFI_HII_SET_KEYBOARD_LAYOUT_EVENT_GUID group,
// which will be triggered by EFI_HII_DATABASE_PROTOCOL.SetKeyboardLayout().
//
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
SetKeyboardLayoutEvent,
UsbKeyboardDevice,
&gEfiHiiKeyBoardLayoutGuid,
&UsbKeyboardDevice->KeyboardLayoutEvent
);
if (EFI_ERROR (Status)) {
return Status;
}
KeyboardLayout = GetCurrentKeyboardLayout ();
if (KeyboardLayout != NULL) {
//
// If current keyboard layout is successfully retrieved from HII database,
// force to initialize the keyboard layout.
//
gBS->SignalEvent (UsbKeyboardDevice->KeyboardLayoutEvent);
} else {
if (FeaturePcdGet (PcdDisableDefaultKeyboardLayoutInUsbKbDriver)) {
//
// If no keyboard layout can be retrieved from HII database, and default layout
// is disabled, then return EFI_NOT_READY.
//
return EFI_NOT_READY;
}
//
// If no keyboard layout can be retrieved from HII database, and default layout
// is enabled, then load the default keyboard layout.
//
InstallDefaultKeyboardLayout (UsbKeyboardDevice);
}
return EFI_SUCCESS;
}
/**
Initialize USB keyboard device and all private data structures.
@param UsbKeyboardDevice The USB_KB_DEV instance.
@retval EFI_SUCCESS Initialization is successful.
@retval EFI_DEVICE_ERROR Keyboard initialization failed.
**/
EFI_STATUS
InitUSBKeyboard (
IN OUT USB_KB_DEV *UsbKeyboardDevice
)
{
UINT16 ConfigValue;
EFI_STATUS Status;
UINT32 TransferResult;
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
EFI_PROGRESS_CODE,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_SELF_TEST),
UsbKeyboardDevice->DevicePath
);
InitQueue (&UsbKeyboardDevice->UsbKeyQueue, sizeof (USB_KEY));
InitQueue (&UsbKeyboardDevice->EfiKeyQueue, sizeof (EFI_KEY_DATA));
InitQueue (&UsbKeyboardDevice->EfiKeyQueueForNotify, sizeof (EFI_KEY_DATA));
//
// Use the config out of the descriptor
// Assumed the first config is the correct one and this is not always the case
//
Status = UsbGetConfiguration (
UsbKeyboardDevice->UsbIo,
&ConfigValue,
&TransferResult
);
if (EFI_ERROR (Status)) {
ConfigValue = 0x01;
//
// Uses default configuration to configure the USB Keyboard device.
//
Status = UsbSetConfiguration (
UsbKeyboardDevice->UsbIo,
ConfigValue,
&TransferResult
);
if (EFI_ERROR (Status)) {
//
// If configuration could not be set here, it means
// the keyboard interface has some errors and could
// not be initialized
//
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
EFI_ERROR_CODE | EFI_ERROR_MINOR,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_INTERFACE_ERROR),
UsbKeyboardDevice->DevicePath
);
return EFI_DEVICE_ERROR;
}
}
//
// Set boot protocol for the USB Keyboard.
// This driver only supports boot protocol.
//
UsbSetProtocolRequest (
UsbKeyboardDevice->UsbIo,
UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,
BOOT_PROTOCOL
);
UsbKeyboardDevice->CtrlOn = FALSE;
UsbKeyboardDevice->AltOn = FALSE;
UsbKeyboardDevice->ShiftOn = FALSE;
UsbKeyboardDevice->NumLockOn = FALSE;
UsbKeyboardDevice->CapsOn = FALSE;
UsbKeyboardDevice->ScrollOn = FALSE;
UsbKeyboardDevice->LeftCtrlOn = FALSE;
UsbKeyboardDevice->LeftAltOn = FALSE;
UsbKeyboardDevice->LeftShiftOn = FALSE;
UsbKeyboardDevice->LeftLogoOn = FALSE;
UsbKeyboardDevice->RightCtrlOn = FALSE;
UsbKeyboardDevice->RightAltOn = FALSE;
UsbKeyboardDevice->RightShiftOn = FALSE;
UsbKeyboardDevice->RightLogoOn = FALSE;
UsbKeyboardDevice->MenuKeyOn = FALSE;
UsbKeyboardDevice->SysReqOn = FALSE;
UsbKeyboardDevice->AltGrOn = FALSE;
UsbKeyboardDevice->CurrentNsKey = NULL;
//
// Sync the initial state of lights on keyboard.
//
SetKeyLED (UsbKeyboardDevice);
ZeroMem (UsbKeyboardDevice->LastKeyCodeArray, sizeof (UINT8) * 8);
//
// Create event for repeat keys' generation.
//
if (UsbKeyboardDevice->RepeatTimer != NULL) {
gBS->CloseEvent (UsbKeyboardDevice->RepeatTimer);
UsbKeyboardDevice->RepeatTimer = NULL;
}
gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_CALLBACK,
USBKeyboardRepeatHandler,
UsbKeyboardDevice,
&UsbKeyboardDevice->RepeatTimer
);
//
// Create event for delayed recovery, which deals with device error.
//
if (UsbKeyboardDevice->DelayedRecoveryEvent != NULL) {
gBS->CloseEvent (UsbKeyboardDevice->DelayedRecoveryEvent);
UsbKeyboardDevice->DelayedRecoveryEvent = NULL;
}
gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
USBKeyboardRecoveryHandler,
UsbKeyboardDevice,
&UsbKeyboardDevice->DelayedRecoveryEvent
);
return EFI_SUCCESS;
}
/**
Handler function for USB keyboard's asynchronous interrupt transfer.
This function is the handler function for USB keyboard's asynchronous interrupt transfer
to manage the keyboard. It parses the USB keyboard input report, and inserts data to
keyboard buffer according to state of modifer keys and normal keys. Timer for repeat key
is also set accordingly.
@param Data A pointer to a buffer that is filled with key data which is
retrieved via asynchronous interrupt transfer.
@param DataLength Indicates the size of the data buffer.
@param Context Pointing to USB_KB_DEV instance.
@param Result Indicates the result of the asynchronous interrupt transfer.
@retval EFI_SUCCESS Asynchronous interrupt transfer is handled successfully.
@retval EFI_DEVICE_ERROR Hardware error occurs.
**/
EFI_STATUS
EFIAPI
KeyboardHandler (
IN VOID *Data,
IN UINTN DataLength,
IN VOID *Context,
IN UINT32 Result
)
{
USB_KB_DEV *UsbKeyboardDevice;
EFI_USB_IO_PROTOCOL *UsbIo;
UINT8 *CurKeyCodeBuffer;
UINT8 *OldKeyCodeBuffer;
UINT8 CurModifierMap;
UINT8 OldModifierMap;
UINT8 Mask;
UINTN Index;
UINT8 Index2;
BOOLEAN KeyRelease;
BOOLEAN KeyPress;
USB_KEY UsbKey;
UINT8 NewRepeatKey;
UINT32 UsbStatus;
EFI_KEY_DESCRIPTOR *KeyDescriptor;
ASSERT (Context != NULL);
NewRepeatKey = 0;
UsbKeyboardDevice = (USB_KB_DEV *)Context;
UsbIo = UsbKeyboardDevice->UsbIo;
//
// Analyzes Result and performs corresponding action.
//
if (Result != EFI_USB_NOERROR) {
//
// Some errors happen during the process
//
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
EFI_ERROR_CODE | EFI_ERROR_MINOR,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_INPUT_ERROR),
UsbKeyboardDevice->DevicePath
);
//
// Stop the repeat key generation if any
//
UsbKeyboardDevice->RepeatKey = 0;
gBS->SetTimer (
UsbKeyboardDevice->RepeatTimer,
TimerCancel,
USBKBD_REPEAT_RATE