include/grub/i386/multiboot.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2002,2003,2004,2007,2008,2009  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_MULTIBOOT_CPU_HEADER
  20 #define GRUB_MULTIBOOT_CPU_HEADER       1
  21
  22 #define MULTIBOOT2_INITIAL_STATE  { .eax = MULTIBOOT2_BOOTLOADER_MAGIC, \
  23     .ecx = 0,                                                           \
  24     .edx = 0,                                                           \
  25     /* Set esp to some random location in low memory to avoid breaking */ \
  26     /* non-compliant kernels.  */                                       \
  27     .esp = 0x7ff00                                                      \
  28       }
  29 #define MULTIBOOT_INITIAL_STATE  { .eax = MULTIBOOT_BOOTLOADER_MAGIC,   \
  30     .ecx = 0,                                                           \
  31     .edx = 0,                                                           \
  32     /* Set esp to some random location in low memory to avoid breaking */ \
  33     /* non-compliant kernels.  */                                       \
  34     .esp = 0x7ff00                                                      \
  35       }
  36 #define MULTIBOOT_ENTRY_REGISTER eip
  37 #define MULTIBOOT_MBI_REGISTER ebx
  38 #define MULTIBOOT2_ARCHITECTURE_CURRENT MULTIBOOT2_ARCHITECTURE_I386
  39
  40 #ifdef GRUB_MACHINE_EFI
  41 #ifdef __x86_64__
  42 #define MULTIBOOT_EFI_INITIAL_STATE  { .rax = MULTIBOOT_BOOTLOADER_MAGIC,       \
  43     .rcx = 0,                                                                   \
  44     .rdx = 0,                                                                   \
  45       }
  46 #define MULTIBOOT_EFI_ENTRY_REGISTER rip
  47 #define MULTIBOOT_EFI_MBI_REGISTER rbx
  48 #endif
  49 #endif
  50
  51 #define MULTIBOOT_ELF32_MACHINE EM_386
  52 #define MULTIBOOT_ELF64_MACHINE EM_X86_64
  53
  54 #endif /* ! GRUB_MULTIBOOT_CPU_HEADER */