src/hci/shell_banner.c

   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  */
  39 int shell_banner ( void ) {
  40         int key;
  41
  42         /* Skip prompt if timeout is zero */
  43         if ( BANNER_TIMEOUT <= 0 )
  44                 return 0;
  45
  46         /* Display prompt */
  47         printf ( "\nPress Ctrl-B for the gPXE command line..." );
  48
  49         /* Wait for key */
  50         key = getchar_timeout ( ( BANNER_TIMEOUT * TICKS_PER_SEC ) / 10 );
  51
  52         /* Clear the "Press Ctrl-B" line */
  53         printf ( "\r                                         \r" );
  54
  55         return ( key == CTRL_B );
  56 }