include/grub/xnu.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef GRUB_XNU_H
  20 #define GRUB_XNU_H 1
  21
  22 #include <grub/bitmap.h>
  23
  24 /* Header of a hibernation image. */
  25 struct grub_xnu_hibernate_header
  26 {
  27   /* Size of the image. Notice that file containing image is usually bigger. */
  28   grub_uint64_t image_size;
  29   grub_uint8_t unknown1[8];
  30   /* Where to copy launchcode? */
  31   grub_uint32_t launchcode_target_page;
  32   /* How many pages of launchcode? */
  33   grub_uint32_t launchcode_numpages;
  34   /* Where to jump? */
  35   grub_uint32_t entry_point;
  36   /* %esp at start. */
  37   grub_uint32_t stack;
  38   grub_uint8_t unknown2[44];
  39 #define GRUB_XNU_HIBERNATE_MAGIC 0x73696d65
  40   grub_uint32_t magic;
  41   grub_uint8_t unknown3[28];
  42   /* This value is non-zero if page is encrypted. Unsupported. */
  43   grub_uint64_t encoffset;
  44   grub_uint8_t unknown4[360];
  45   /* The size of additional header used to locate image without parsing FS.
  46      Used only to skip it.
  47    */
  48   grub_uint32_t extmapsize;
  49 } __attribute__ ((packed));
  50
  51 /* In-memory structure for temporary keeping device tree. */
  52 struct grub_xnu_devtree_key
  53 {
  54   char *name;
  55   int datasize; /* -1 for not leaves. */
  56   union
  57   {
  58     struct grub_xnu_devtree_key *first_child;
  59     void *data;
  60   };
  61   struct grub_xnu_devtree_key *next;
  62 };
  63
  64 /* A structure used in memory-map values. */
  65 struct
  66 grub_xnu_extdesc
  67 {
  68   grub_uint32_t addr;
  69   grub_uint32_t size;
  70 } __attribute__ ((packed));
  71
  72 /* Header describing extension in the memory. */
  73 struct grub_xnu_extheader
  74 {
  75   grub_uint32_t infoplistaddr;
  76   grub_uint32_t infoplistsize;
  77   grub_uint32_t binaryaddr;
  78   grub_uint32_t binarysize;
  79 } __attribute__ ((packed));
  80
  81 struct grub_xnu_devtree_key *grub_xnu_create_key (struct grub_xnu_devtree_key **parent,
  82                                                   char *name);
  83
  84 extern struct grub_xnu_devtree_key *grub_xnu_devtree_root;
  85
  86 void grub_xnu_free_devtree (struct grub_xnu_devtree_key *cur);
  87
  88 grub_err_t grub_xnu_writetree_toheap (void **start, grub_size_t *size);
  89 struct grub_xnu_devtree_key *grub_xnu_create_value (struct grub_xnu_devtree_key **parent,
  90                                                     char *name);
  91
  92 void grub_xnu_lock (void);
  93 void grub_xnu_unlock (void);
  94 grub_err_t grub_xnu_resume (char *imagename);
  95 struct grub_xnu_devtree_key *grub_xnu_find_key (struct grub_xnu_devtree_key *parent,
  96                                                 char *name);
  97 grub_err_t grub_xnu_align_heap (int align);
  98 grub_err_t grub_xnu_scan_dir_for_kexts (char *dirname, char *osbundlerequired,
  99                                         int maxrecursion);
 100 grub_err_t grub_xnu_load_kext_from_dir (char *dirname, char *osbundlerequired,
 101                                         int maxrecursion);
 102 void *grub_xnu_heap_malloc (int size);
 103 extern grub_uint32_t grub_xnu_heap_real_start;
 104 extern grub_size_t grub_xnu_heap_size;
 105 extern char *grub_xnu_heap_start;
 106 extern struct grub_video_bitmap *grub_xnu_bitmap;
 107 #endif