arch/common/boot/grub2/loader/efi/appleloader.c

   1 /* appleloader.c - apple legacy boot loader.  */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2008  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/loader.h>
  21 #include <grub/err.h>
  22 #include <grub/mm.h>
  23 #include <grub/dl.h>
  24 #include <grub/misc.h>
  25 #include <grub/normal.h>
  26 #include <grub/efi/api.h>
  27 #include <grub/efi/efi.h>
  28
  29 static grub_dl_t my_mod;
  30
  31 static grub_efi_handle_t image_handle;
  32 static grub_efi_char16_t *cmdline;
  33
  34 static grub_err_t
  35 grub_appleloader_unload (void)
  36 {
  37   grub_efi_boot_services_t *b;
  38
  39   b = grub_efi_system_table->boot_services;
  40   efi_call_1 (b->unload_image, image_handle);
  41
  42   grub_free (cmdline);
  43   cmdline = 0;
  44
  45   grub_dl_unref (my_mod);
  46   return GRUB_ERR_NONE;
  47 }
  48
  49 static grub_err_t
  50 grub_appleloader_boot (void)
  51 {
  52   grub_efi_boot_services_t *b;
  53
  54   b = grub_efi_system_table->boot_services;
  55   efi_call_3 (b->start_image, image_handle, 0, 0);
  56
  57   grub_appleloader_unload ();
  58
  59   return grub_errno;
  60 }
  61
  62 /* early 2006 Core Duo / Core Solo models  */
  63 static grub_uint8_t devpath_1[] =
  64 {
  65   0x01, 0x03, 0x18, 0x00, 0x0B, 0x00, 0x00, 0x00,
  66   0x00, 0x00, 0xE0, 0xFF, 0x00, 0x00, 0x00, 0x00,
  67   0xFF, 0xFF, 0xF9, 0xFF, 0x00, 0x00, 0x00, 0x00,
  68   0x04, 0x06, 0x14, 0x00, 0xEB, 0x85, 0x05, 0x2B,
  69   0xB8, 0xD8, 0xA9, 0x49, 0x8B, 0x8C, 0xE2, 0x1B,
  70   0x01, 0xAE, 0xF2, 0xB7, 0x7F, 0xFF, 0x04, 0x00,
  71 };
  72
  73 /* mid-2006 Mac Pro (and probably other Core 2 models)  */
  74 static grub_uint8_t devpath_2[] =
  75 {
  76   0x01, 0x03, 0x18, 0x00, 0x0B, 0x00, 0x00, 0x00,
  77   0x00, 0x00, 0xE0, 0xFF, 0x00, 0x00, 0x00, 0x00,
  78   0xFF, 0xFF, 0xF7, 0xFF, 0x00, 0x00, 0x00, 0x00,
  79   0x04, 0x06, 0x14, 0x00, 0xEB, 0x85, 0x05, 0x2B,
  80   0xB8, 0xD8, 0xA9, 0x49, 0x8B, 0x8C, 0xE2, 0x1B,
  81   0x01, 0xAE, 0xF2, 0xB7, 0x7F, 0xFF, 0x04, 0x00,
  82 };
  83
  84 /* mid-2007 MBP ("Santa Rosa" based models)  */
  85 static grub_uint8_t devpath_3[] =
  86 {
  87   0x01, 0x03, 0x18, 0x00, 0x0B, 0x00, 0x00, 0x00,
  88   0x00, 0x00, 0xE0, 0xFF, 0x00, 0x00, 0x00, 0x00,
  89   0xFF, 0xFF, 0xF8, 0xFF, 0x00, 0x00, 0x00, 0x00,
  90   0x04, 0x06, 0x14, 0x00, 0xEB, 0x85, 0x05, 0x2B,
  91   0xB8, 0xD8, 0xA9, 0x49, 0x8B, 0x8C, 0xE2, 0x1B,
  92   0x01, 0xAE, 0xF2, 0xB7, 0x7F, 0xFF, 0x04, 0x00,
  93 };
  94
  95 /* early-2008 MBA  */
  96 static grub_uint8_t devpath_4[] =
  97 {
  98   0x01, 0x03, 0x18, 0x00, 0x0B, 0x00, 0x00, 0x00,
  99   0x00, 0x00, 0xC0, 0xFF, 0x00, 0x00, 0x00, 0x00,
 100   0xFF, 0xFF, 0xF8, 0xFF, 0x00, 0x00, 0x00, 0x00,
 101   0x04, 0x06, 0x14, 0x00, 0xEB, 0x85, 0x05, 0x2B,
 102   0xB8, 0xD8, 0xA9, 0x49, 0x8B, 0x8C, 0xE2, 0x1B,
 103   0x01, 0xAE, 0xF2, 0xB7, 0x7F, 0xFF, 0x04, 0x00,
 104 };
 105
 106 struct devdata
 107 {
 108   char *model;
 109   grub_efi_device_path_t *devpath;
 110 };
 111
 112 struct devdata devs[] =
 113 {
 114   {"Core Duo/Solo", (grub_efi_device_path_t *) devpath_1},
 115   {"Mac Pro", (grub_efi_device_path_t *) devpath_2},
 116   {"MBP", (grub_efi_device_path_t *) devpath_3},
 117   {"MBA", (grub_efi_device_path_t *) devpath_4},
 118   {NULL, NULL},
 119 };
 120
 121 static grub_err_t
 122 grub_cmd_appleloader (struct grub_arg_list *state __attribute__ ((unused)),
 123                       int argc, char *argv[])
 124 {
 125   grub_efi_boot_services_t *b;
 126   grub_efi_loaded_image_t *loaded_image;
 127   struct devdata *pdev;
 128
 129   grub_dl_ref (my_mod);
 130
 131   /* Initialize some global variables.  */
 132   image_handle = 0;
 133
 134   b = grub_efi_system_table->boot_services;
 135
 136   for (pdev = devs ; pdev->devpath ; pdev++)
 137     if (efi_call_6 (b->load_image, 0, grub_efi_image_handle, pdev->devpath,
 138                     NULL, 0, &image_handle) == GRUB_EFI_SUCCESS)
 139       break;
 140
 141   if (! pdev->devpath)
 142     {
 143       grub_error (GRUB_ERR_BAD_OS, "can't find model");
 144       goto fail;
 145     }
 146
 147   grub_printf ("Model : %s\n", pdev->model);
 148
 149   loaded_image = grub_efi_get_loaded_image (image_handle);
 150   if (! loaded_image)
 151     {
 152       grub_error (GRUB_ERR_BAD_OS, "no loaded image available");
 153       goto fail;
 154     }
 155
 156   if (argc > 0)
 157     {
 158       int i, len;
 159       grub_efi_char16_t *p16;
 160
 161       for (i = 0, len = 0; i < argc; i++)
 162         len += grub_strlen (argv[i]) + 1;
 163
 164       len *= sizeof (grub_efi_char16_t);
 165       cmdline = p16 = grub_malloc (len);
 166       if (! cmdline)
 167         goto fail;
 168
 169       for (i = 0; i < argc; i++)
 170         {
 171           char *p8;
 172
 173           p8 = argv[i];
 174           while (*p8)
 175             *(p16++) = *(p8++);
 176
 177           *(p16++) = ' ';
 178         }
 179       *(--p16) = 0;
 180
 181       loaded_image->load_options = cmdline;
 182       loaded_image->load_options_size = len;
 183     }
 184
 185   grub_loader_set (grub_appleloader_boot, grub_appleloader_unload, 0);
 186
 187   return 0;
 188
 189  fail:
 190
 191   grub_dl_unref (my_mod);
 192   return grub_errno;
 193 }
 194
 195 GRUB_MOD_INIT(appleloader)
 196 {
 197   grub_register_command ("appleloader", grub_cmd_appleloader,
 198                          GRUB_COMMAND_FLAG_BOTH,
 199                          "appleloader [OPTS]",
 200                          "Boot legacy system.", 0);
 201
 202   my_mod = mod;
 203 }
 204
 205 GRUB_MOD_FINI(appleloader)
 206 {
 207   grub_unregister_command ("appleloader");
 208 }