1 /* 2 * Copyright (C) 2006 Michael Brown <mbrown (at) 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 */ 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
