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CloverBootloader/Protocols/AppleKeyFeeder/AppleKeyMapUtils.c

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/*
* AppleKeyMapUtils.c
*
* Created by Jief on 25 May 2018.
*
*/
#include <Library/BaseLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/PrintLib.h>
#include <Library/MemLogLib.h>
#include <IndustryStandard/AppleHid.h>
#include <Protocol/AppleKeyMapDatabase.h>
// DBG_TO: 0=no debug, 1=serial, 2=console 3=log
// serial requires
// [PcdsFixedAtBuild]
// gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask|0x07
// gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel|0xFFFFFFFF
// in package DSC file
#ifdef JIEF_DEBUG
#define DBG_APPLEKEYFEEDER 2
#endif
#if DBG_APPLEKEYFEEDER == 3
#define DBG(...) MemLog(FALSE, 0, __VA_ARGS__)
#elif DBG_APPLEKEYFEEDER == 2
#define DBG(...) AsciiPrint(__VA_ARGS__)
#elif DBG_APPLEKEYFEEDER == 1
#define DBG(...) DebugPrint(1, __VA_ARGS__)
#else
#define DBG(...)
#endif
EFI_GUID gAppleKeyMapDatabaseProtocolGuid = {0x584B9EBE, 0x80C1, 0x4BD6, {0x98, 0xB0, 0xA7, 0x78, 0x6E, 0xC2, 0xF2, 0xE2}};
APPLE_KEY_MAP_DATABASE_PROTOCOL *AppleKeyMapDb = NULL;
UINTN AppleKeyMapDbIndex = 0;
static EFI_STATUS getAppleKeyMapDb()
{
EFI_STATUS Status = EFI_SUCCESS;
Status = gBS->LocateProtocol (
&gAppleKeyMapDatabaseProtocolGuid,
NULL,
(VOID **)&AppleKeyMapDb
);
if (!EFI_ERROR(Status))
{
Status = AppleKeyMapDb->CreateKeyStrokesBuffer (
AppleKeyMapDb,
6,
&AppleKeyMapDbIndex
);
if (EFI_ERROR(Status)) {
DBG("AppleKeyFeederEntrypoint: CreateKeyStrokesBuffer failed, Status=%x\n", Status);
}
}else{
DBG("AppleKeyFeederEntrypoint: LocateProtocol failed, Status=%x\n", Status);
}
return Status;
}
static EFI_EVENT eventKeyRelease;
static VOID
EFIAPI
SendKeyRelease (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EFI_STATUS Status;
//DBG("SendKeyRelease\n");
APPLE_KEY_CODE appleKey; // APPLE_KEY_CODE is UINT16
Status = AppleKeyMapDb->SetKeyStrokeBufferKeys (
AppleKeyMapDb,
AppleKeyMapDbIndex,
(APPLE_MODIFIER_MAP)0,
0,
&appleKey
);
if (EFI_ERROR(Status)) {
DBG("SendKeyRelease: SetKeyStrokeBufferKeys failed, Status=%x\n", Status);
}
Status = gBS->SetTimer (
eventKeyRelease,
TimerCancel,
10*1000
);
if (EFI_ERROR(Status)) {
DBG("SendKeyRelease: SetTimer failed, Status=%x\n", Status);
}
}
static int MapKeyData2AppleKey(EFI_KEY_DATA* KeyData, APPLE_KEY_CODE* pKey, UINT8* pCurModifierMap)
{
if ( KeyData->Key.UnicodeChar == 0 )
{
*pCurModifierMap = 0;
switch (KeyData->Key.ScanCode) {
case 0x01: // up arrow
*pKey = 0x7052;
return 1;
case 0x02: // down arrow
*pKey = 0x7051;
return 1;
case 0x03: // left arrow
*pKey = 0x704F;
return 1;
case 0x04: // right arrow
*pKey = 0x7050;
return 1;
}
return 0;
}
if ( KeyData->Key.UnicodeChar >= 'a' && KeyData->Key.UnicodeChar <= 'z' ) {
*pKey = 0x7004 + ( KeyData->Key.UnicodeChar - 'a');
*pCurModifierMap = 0;
return 1;
}
if ( KeyData->Key.UnicodeChar >= 'A' && KeyData->Key.UnicodeChar <= 'Z' ) {
*pKey = 0x7004 + ( KeyData->Key.UnicodeChar - 'A');
*pCurModifierMap = 2;
return 1;
}
if ( KeyData->Key.UnicodeChar == '0' ) { // Could have put that in the switch, but wanted to make very clear that the 0 wasn't forgotten and that this : "KeyData->Key.UnicodeChar >= '1'" (instead of '0') is not a mistake !!!
*pKey = 0x7027;
return 1;
}
if ( KeyData->Key.UnicodeChar >= '1' && KeyData->Key.UnicodeChar <= '9' ) {
*pKey = 0x701E + ( KeyData->Key.UnicodeChar - '1');
return 1;
}
*pCurModifierMap = 0;
switch (KeyData->Key.UnicodeChar) {
case 0x01: // up arrow
*pKey = 0x7052;
return 1;
case 0x02: // down arrow
*pKey = 0x7051;
return 1;
case 0x03: // left arrow
*pKey = 0x7050;
return 1;
case 0x04: // right arrow
*pKey = 0x704F;
return 1;
case 0x08: // backspace
*pKey = 0x702A;
return 1;
case 0x0D: // return
*pKey = 0x7028;
return 1;
case ' ': // return
*pKey = 0x702C;
return 1;
case '!': // return
*pKey = 0x701E;
*pCurModifierMap = 2;
return 1;
case '"': // return
*pKey = 0x7034;
*pCurModifierMap = 2;
return 1;
case '#': // return
*pKey = 0x7020;
*pCurModifierMap = 2;
return 1;
case '$': // return
*pKey = 0x7021;
*pCurModifierMap = 2;
return 1;
case '%': // return
*pKey = 0x7022;
*pCurModifierMap = 2;
return 1;
case '&': // return
*pKey = 0x7024;
*pCurModifierMap = 2;
return 1;
case '\'': // return
*pKey = 0x7034;
return 1;
case '(': // return
*pKey = 0x7026;
*pCurModifierMap = 2;
return 1;
case ')': // return
*pKey = 0x7027;
*pCurModifierMap = 2;
return 1;
case '*': // return
*pKey = 0x7025;
*pCurModifierMap = 2;
return 1;
case '+': // return
*pKey = 0x702E;
*pCurModifierMap = 2;
return 1;
case ',': // return
*pKey = 0x7036;
return 1;
case '-': // return
*pKey = 0x702D;
return 1;
case '.': // return
*pKey = 0x7037;
return 1;
case '/': // return
*pKey = 0x7038;
return 1;
case ':': // return
*pKey = 0x7033;
*pCurModifierMap = 2;
return 1;
case ';': // return
*pKey = 0x7033;
return 1;
case '<': // return
*pKey = 0x7036;
*pCurModifierMap = 2;
return 1;
case '=': // return
*pKey = 0x702E;
return 1;
case '>': // return
*pKey = 0x7037;
*pCurModifierMap = 2;
return 1;
case '?': // return
*pKey = 0x7038;
*pCurModifierMap = 2;
return 1;
case '@': // return
*pKey = 0x701F;
*pCurModifierMap = 2;
return 1;
case '[': // return
*pKey = 0x702F;
return 1;
case '\\': // return
*pKey = 0x7031;
return 1;
case ']': // return
*pKey = 0x7030;
return 1;
case '^': // return
*pKey = 0x7023;
*pCurModifierMap = 2;
return 1;
case '_': // return
*pKey = 0x702D;
*pCurModifierMap = 2;
return 1;
case '`': // return
*pKey = 0x7035;
return 1;
case '{': // return
*pKey = 0x702F;
*pCurModifierMap = 2;
return 1;
case '|': // return
*pKey = 0x7031;
*pCurModifierMap = 2;
return 1;
case '}': // return
*pKey = 0x7030;
*pCurModifierMap = 2;
return 1;
case '~': // return
*pKey = 0x7035;
*pCurModifierMap = 2;
return 1;
}
return 0;
}
EFI_STATUS
EFIAPI
SendDataToAppleMap(IN EFI_KEY_DATA *KeyData)
{
//DBG("SendDataToAppleMap ScanCode=%x, Uchar=%x, ShiftState=%x, ToogleState=%x\n", KeyData->Key.ScanCode, KeyData->Key.UnicodeChar, KeyData->KeyState.KeyShiftState, KeyData->KeyState.KeyToggleState);
EFI_STATUS Status;
UINT8 CurModifierMap = 0;
UINTN NumberOfKeys = 1;
APPLE_KEY_CODE appleKey; // APPLE_KEY_CODE is UINT16
if ( !AppleKeyMapDb ) {
Status = getAppleKeyMapDb();
if (EFI_ERROR(Status)) {
DBG("SendDataToAppleMap: getAppleKeyMapDb() failed, Status=%x\n", Status);
}
}
if ( !AppleKeyMapDb ) {
DBG("SendDataToAppleMap: AppleKeyMapDb==NULL, Status=%x\n", EFI_NOT_FOUND);
return EFI_NOT_FOUND;
}
if ( MapKeyData2AppleKey(KeyData, &appleKey, &CurModifierMap) )
{
Status = AppleKeyMapDb->SetKeyStrokeBufferKeys (
AppleKeyMapDb,
AppleKeyMapDbIndex,
(APPLE_MODIFIER_MAP)CurModifierMap,
NumberOfKeys,
&appleKey
);
if (EFI_ERROR(Status)) {
DBG("SendDataToAppleMap: SetKeyStrokeBufferKeys failed, Status=%x\n", Status);
return Status;
}
Status = gBS->SetTimer (
eventKeyRelease,
TimerPeriodic,
10*1000*15 // 15 ms
);
if (EFI_ERROR(Status)) {
// if this fail, we end up having the key repeated.
DBG("SendDataToAppleMap: SetTimer failed, Status=%x\n", Status);
return Status;
}
return Status;
}
DBG("SendDataToAppleMap: key not mapped, sorry\n");
return EFI_NOT_FOUND;
}
/****************************************************************
* Entry point
***************************************************************/
EFI_STATUS
EFIAPI
AppleKeyMapUtilsInit (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
DBG("AppleKeyMapUtilsInit\n");
EFI_STATUS Status = EFI_SUCCESS;
//
// Setup a periodic timer, used for send a key release to apple key map
//
Status = gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
SendKeyRelease,
NULL,
&eventKeyRelease
);
if ( EFI_ERROR(Status) ) {
DBG("AppleKeyMapUtilsInit: CreateEvent failed, Status=%x\n", Status);
}
DBG("AppleKeyMapUtilsInit returns %x\n", Status);
return Status;
}
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