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  1. /*
  2. * Copyright (C) 2013 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., 51 Franklin Street, Fifth Floor, Boston, MA
  17. * 02110-1301, USA.
  18. *
  19. * You can also choose to distribute this program under the terms of
  20. * the Unmodified Binary Distribution Licence (as given in the file
  21. * COPYING.UBDL), provided that you have satisfied its requirements.
  22. */
  23. FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  24. /**
  25. * @file
  26. *
  27. * EFI reboot mechanism
  28. *
  29. */
  30. #include <errno.h>
  31. #include <ipxe/efi/efi.h>
  32. #include <ipxe/reboot.h>
  33. /**
  34. * Reboot system
  35. *
  36. * @v warm Perform a warm reboot
  37. */
  38. static void efi_reboot ( int warm ) {
  39. EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
  40. /* Use runtime services to reset system */
  41. rs->ResetSystem ( ( warm ? EfiResetWarm : EfiResetCold ), 0, 0, NULL );
  42. }
  43. /**
  44. * Power off system
  45. *
  46. * @ret rc Return status code
  47. */
  48. static int efi_poweroff ( void ) {
  49. EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
  50. /* Use runtime services to power off system */
  51. rs->ResetSystem ( EfiResetShutdown, 0, 0, NULL );
  52. /* Should never happen */
  53. return -ECANCELED;
  54. }
  55. PROVIDE_REBOOT ( efi, reboot, efi_reboot );
  56. PROVIDE_REBOOT ( efi, poweroff, efi_poweroff );