76 lines
3.0 KiB
C
76 lines
3.0 KiB
C
/* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <Uefi.h>
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#include <Library/DebugLib.h>
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#include <Library/KeyPad.h>
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#include <Library/PartitionTableUpdate.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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EFI_STATUS
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GetKeyPress (UINT32 *KeyPressed)
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{
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EFI_STATUS Status;
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EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *InputEx;
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EFI_KEY_DATA KeyData;
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Status = gBS->OpenProtocol (
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gST->ConsoleInHandle, &gEfiSimpleTextInputExProtocolGuid,
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(VOID **)&InputEx, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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if (Status != EFI_SUCCESS) {
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DEBUG ((EFI_D_ERROR, "Input Open protocol failed Status:%r \n", Status));
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return Status;
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}
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gBS->SetMem (&KeyData, sizeof (KeyData), 0);
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Status = InputEx->ReadKeyStrokeEx (InputEx, &KeyData);
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if (Status != EFI_SUCCESS)
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return Status;
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DEBUG ((EFI_D_VERBOSE, "Key Stroke Read\n"));
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DEBUG ((EFI_D_VERBOSE, "ScanCode = (0x%x), UnicodeChar =(0x%x)\n",
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KeyData.Key.ScanCode, KeyData.Key.UnicodeChar));
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DEBUG ((EFI_D_VERBOSE, "ShiftState=(0x%x), ToggleState==(0x%x)\n",
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KeyData.KeyState.KeyShiftState, KeyData.KeyState.KeyToggleState));
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Status = InputEx->Reset (InputEx, FALSE);
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if (Status != EFI_SUCCESS) {
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DEBUG ((EFI_D_ERROR, "Error resetting the input key status: %x\n", Status));
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return Status;
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}
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*KeyPressed = KeyData.Key.ScanCode;
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gBS->CloseProtocol (gST->ConsoleInHandle, &gEfiSimpleTextInputExProtocolGuid,
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gImageHandle, NULL);
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return Status;
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}
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