1 /*
2  * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of the
7  * License, or any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17  */
18 
19 FILE_LICENCE ( GPL2_OR_LATER );
20 
21 #include <stdio.h>
22 #include <console.h>
23 #include <unistd.h>
24 #include <config/general.h>
25 #include <gpxe/keys.h>
26 #include <gpxe/shell_banner.h>
27 
28 /** @file
29  *
30  * Shell startup banner
31  *
32  */
33 
34 /**
35  * Print shell banner and prompt for shell entry
36  *
37  * @ret	enter_shell		User wants to enter shell
38  */
shell_banner(void)39 int shell_banner ( void ) {
40 	int enter_shell = 0;
41 	int wait_count;
42 	int key;
43 
44 	if ( BANNER_TIMEOUT <= 0 )
45 		return enter_shell;
46 
47 	printf ( "\nPress Ctrl-B for the gPXE command line..." );
48 
49 	/* Wait for key */
50 	for ( wait_count = 0 ; wait_count < BANNER_TIMEOUT ; wait_count++ ) {
51 		if ( iskey() ) {
52 			key = getchar();
53 			if ( key == CTRL_B )
54 				enter_shell = 1;
55 			break;
56 		}
57 		mdelay(100);
58 	}
59 
60 	/* Clear the "Press Ctrl-B" line */
61 	printf ( "\r                                         \r" );
62 
63 	return enter_shell;
64 }
65