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 #include <stdio.h>
  20 #include <console.h>
  21 #include <latch.h>
  22 #include <gpxe/features.h>
  23 #include <gpxe/shell_banner.h>
  24
  25 /** @file
  26  *
  27  * Shell startup banner
  28  *
  29  */
  30
  31 #define BANNER_TIMEOUT ( 2 * TICKS_PER_SEC )
  32
  33 #define NORMAL  "\033[0m"
  34 #define BOLD    "\033[1m"
  35 #define CYAN    "\033[36m"
  36
  37 static struct feature features[0] __table_start ( struct feature, features );
  38 static struct feature features_end[0] __table_end ( struct feature, features );
  39
  40 /**
  41  * Print shell banner and prompt for shell entry
  42  *
  43  * @ret enter_shell             User wants to enter shell
  44  */
  45 int shell_banner ( void ) {
  46         unsigned long timeout = ( currticks() + BANNER_TIMEOUT );
  47         struct feature *feature;
  48         int key;
  49         int enter_shell = 0;
  50
  51         /* Print welcome banner */
  52         printf ( NORMAL "\n\n\n" BOLD "gPXE " VERSION
  53                  NORMAL " -- Open Source Boot Firmware -- "
  54                  CYAN "http://etherboot.org" NORMAL "\n"
  55                  "Features:" );
  56         for ( feature = features ; feature < features_end ; feature++ ) {
  57                 printf ( " %s", feature->name );
  58         }
  59         printf ( "\nPress Ctrl-B for the gPXE command line..." );
  60
  61         /* Wait for key */
  62         while ( currticks() < timeout ) {
  63                 if ( iskey() ) {
  64                         key = getchar();
  65                         if ( key == 0x02 /* Ctrl-B */ )
  66                                 enter_shell = 1;
  67                         break;
  68                 }
  69         }
  70
  71         /* Clear the "Press Ctrl-B" line */
  72         printf ( "\r                                         \r" );
  73
  74         return enter_shell;
  75 }