wimboot/wimboot-2.7.3/src/die.c

   1 /*
   2  * Copyright (C) 2014 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 (at your option) 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., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA.
  18  */
  19
  20 /**
  21  * @file
  22  *
  23  * Fatal errors
  24  *
  25  */
  26
  27 #include <stdarg.h>
  28 #include <stdio.h>
  29 #include "wimboot.h"
  30 #include "efi.h"
  31
  32 /**
  33  * Handle fatal errors
  34  *
  35  * @v fmt       Error message format string
  36  * @v ...       Arguments
  37  */
  38 void die ( const char *fmt, ... ) {
  39         EFI_BOOT_SERVICES *bs;
  40         EFI_RUNTIME_SERVICES *rs;
  41         va_list args;
  42
  43         /* Print message */
  44         va_start ( args, fmt );
  45         vprintf ( fmt, args );
  46         va_end ( args );
  47
  48         /* Reboot or exit as applicable */
  49         if ( efi_systab ) {
  50
  51                 /* Exit */
  52                 bs = efi_systab->BootServices;
  53                 bs->Exit ( efi_image_handle, EFI_LOAD_ERROR, 0, NULL );
  54                 printf ( "Failed to exit\n" );
  55                 rs = efi_systab->RuntimeServices;
  56                 rs->ResetSystem ( EfiResetWarm, 0, 0, NULL );
  57                 printf ( "Failed to reboot\n" );
  58
  59         } else {
  60
  61                 /* Wait for keypress */
  62                 printf ( "Press a key to reboot..." );
  63                 getchar();
  64                 printf ( "\n" );
  65
  66                 /* Reboot system */
  67                 reboot();
  68         }
  69
  70         /* Should be impossible to reach this */
  71         __builtin_unreachable();
  72 }