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console.c revision 1.1.2.3 
      1  1.1.2.3  pgoyette /* $NetBSD: console.c,v 1.1.2.3 2018/09/30 01:45:57 pgoyette Exp $ */
      2  1.1.2.2  pgoyette 
      3  1.1.2.2  pgoyette /*-
      4  1.1.2.2  pgoyette  * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca>
      5  1.1.2.2  pgoyette  * All rights reserved.
      6  1.1.2.2  pgoyette  *
      7  1.1.2.2  pgoyette  * Redistribution and use in source and binary forms, with or without
      8  1.1.2.2  pgoyette  * modification, are permitted provided that the following conditions
      9  1.1.2.2  pgoyette  * are met:
     10  1.1.2.2  pgoyette  * 1. Redistributions of source code must retain the above copyright
     11  1.1.2.2  pgoyette  *    notice, this list of conditions and the following disclaimer.
     12  1.1.2.2  pgoyette  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1.2.2  pgoyette  *    notice, this list of conditions and the following disclaimer in the
     14  1.1.2.2  pgoyette  *    documentation and/or other materials provided with the distribution.
     15  1.1.2.2  pgoyette  *
     16  1.1.2.2  pgoyette  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  1.1.2.2  pgoyette  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  1.1.2.2  pgoyette  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  1.1.2.2  pgoyette  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  1.1.2.2  pgoyette  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  1.1.2.2  pgoyette  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  1.1.2.2  pgoyette  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  1.1.2.2  pgoyette  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  1.1.2.2  pgoyette  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.1.2.2  pgoyette  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.1.2.2  pgoyette  * SUCH DAMAGE.
     27  1.1.2.2  pgoyette  */
     28  1.1.2.2  pgoyette 
     29  1.1.2.2  pgoyette #include "efiboot.h"
     30  1.1.2.2  pgoyette 
     31  1.1.2.3  pgoyette static EFI_INPUT_KEY key_cur;
     32  1.1.2.3  pgoyette static int key_pending;
     33  1.1.2.3  pgoyette 
     34  1.1.2.2  pgoyette int
     35  1.1.2.2  pgoyette getchar(void)
     36  1.1.2.2  pgoyette {
     37  1.1.2.2  pgoyette 	EFI_STATUS status;
     38  1.1.2.2  pgoyette 	EFI_INPUT_KEY key;
     39  1.1.2.2  pgoyette 
     40  1.1.2.3  pgoyette 	if (key_pending) {
     41  1.1.2.3  pgoyette 		key = key_cur;
     42  1.1.2.3  pgoyette 		key_pending = 0;
     43  1.1.2.3  pgoyette 	} else {
     44  1.1.2.2  pgoyette 		status = uefi_call_wrapper(ST->ConIn->ReadKeyStroke, 2, ST->ConIn, &key);
     45  1.1.2.3  pgoyette 		while (status == EFI_NOT_READY) {
     46  1.1.2.3  pgoyette 			if (ST->ConIn->WaitForKey != NULL)
     47  1.1.2.3  pgoyette 				WaitForSingleEvent(ST->ConIn->WaitForKey, 0);
     48  1.1.2.3  pgoyette 			status = uefi_call_wrapper(ST->ConIn->ReadKeyStroke, 2, ST->ConIn, &key);
     49  1.1.2.3  pgoyette 		}
     50  1.1.2.2  pgoyette 	}
     51  1.1.2.2  pgoyette 
     52  1.1.2.2  pgoyette 	return key.UnicodeChar;
     53  1.1.2.2  pgoyette }
     54  1.1.2.2  pgoyette 
     55  1.1.2.2  pgoyette void
     56  1.1.2.2  pgoyette putchar(int c)
     57  1.1.2.2  pgoyette {
     58  1.1.2.2  pgoyette 	CHAR16 buf[2] = { c, '\0' };
     59  1.1.2.2  pgoyette 	if (c == '\n')
     60  1.1.2.2  pgoyette 		putchar('\r');
     61  1.1.2.2  pgoyette 	uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, buf);
     62  1.1.2.2  pgoyette }
     63  1.1.2.2  pgoyette 
     64  1.1.2.2  pgoyette int
     65  1.1.2.2  pgoyette ischar(void)
     66  1.1.2.2  pgoyette {
     67  1.1.2.3  pgoyette 	EFI_INPUT_KEY key;
     68  1.1.2.2  pgoyette 	EFI_STATUS status;
     69  1.1.2.2  pgoyette 
     70  1.1.2.3  pgoyette 	if (ST->ConIn->WaitForKey == NULL) {
     71  1.1.2.3  pgoyette 		if (key_pending)
     72  1.1.2.3  pgoyette 			return 1;
     73  1.1.2.3  pgoyette 		status = uefi_call_wrapper(ST->ConIn->ReadKeyStroke, 2, ST->ConIn, &key);
     74  1.1.2.3  pgoyette 		if (status == EFI_SUCCESS) {
     75  1.1.2.3  pgoyette 			key_cur = key;
     76  1.1.2.3  pgoyette 			key_pending = 1;
     77  1.1.2.3  pgoyette 		}
     78  1.1.2.3  pgoyette 		return key_pending;
     79  1.1.2.3  pgoyette 	} else {
     80  1.1.2.3  pgoyette 		status = uefi_call_wrapper(BS->CheckEvent, 1, ST->ConIn->WaitForKey);
     81  1.1.2.3  pgoyette 		return status == EFI_SUCCESS;
     82  1.1.2.3  pgoyette 	}
     83  1.1.2.2  pgoyette }
     84