grub-core/kern/efi/init.c

   1 /* init.c - generic EFI initialization and finalization */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2006,2007  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/efi/efi.h>
  21 #include <grub/efi/console.h>
  22 #include <grub/efi/disk.h>
  23 #include <grub/term.h>
  24 #include <grub/misc.h>
  25 #include <grub/env.h>
  26 #include <grub/mm.h>
  27 #include <grub/kernel.h>
  28
  29 grub_addr_t grub_modbase;
  30
  31 void
  32 grub_efi_init (void)
  33 {
  34   grub_modbase = grub_efi_modules_addr ();
  35   /* First of all, initialize the console so that GRUB can display
  36      messages.  */
  37   grub_console_init ();
  38
  39   /* Initialize the memory management system.  */
  40   grub_efi_mm_init ();
  41
  42   efi_call_4 (grub_efi_system_table->boot_services->set_watchdog_timer,
  43               0, 0, 0, NULL);
  44
  45   grub_efidisk_init ();
  46 }
  47
  48 void (*grub_efi_net_config) (grub_efi_handle_t hnd,
  49                              char **device,
  50                              char **path);
  51
  52 void
  53 grub_machine_get_bootlocation (char **device, char **path)
  54 {
  55   grub_efi_loaded_image_t *image = NULL;
  56   char *p;
  57
  58   image = grub_efi_get_loaded_image (grub_efi_image_handle);
  59   if (!image)
  60     return;
  61   *device = grub_efidisk_get_device_name (image->device_handle);
  62   if (!*device && grub_efi_net_config)
  63     {
  64       grub_efi_net_config (image->device_handle, device, path);
  65       return;
  66     }
  67
  68   *path = grub_efi_get_filename (image->file_path);
  69   if (*path)
  70     {
  71       /* Get the directory.  */
  72       p = grub_strrchr (*path, '/');
  73       if (p)
  74         *p = '\0';
  75     }
  76 }
  77
  78 void
  79 grub_efi_fini (void)
  80 {
  81   grub_efidisk_fini ();
  82   grub_console_fini ();
  83 }