reactos/boot/freeldr/freeldr/arch/amd64/mb.S

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2002  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program 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 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program 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 along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include <asm.inc>
  21
  22
  23         .text
  24         .code16
  25
  26 #define ASM
  27 #include <arch.h>
  28 #include <multiboot.h>
  29
  30         /*
  31          * Here we assume the kernel is loaded at 1mb
  32          * This boots the kernel
  33          */
  34         .code64
  35     .globl PageDirectoryStart
  36
  37     .globl pml4_startup
  38     .globl pdp_startup
  39     .globl pd_startup
  40
  41     .globl PageDirectoryEnd
  42
  43         //
  44         // Boot information structure
  45         //
  46
  47 EXTERN(reactos_memory_map_descriptor_size)
  48         .long   0
  49
  50 EXTERN(reactos_memory_map)
  51         .rept   (32 * /*sizeof(memory_map_t)*/24)
  52         .byte   0
  53         .endr
  54
  55 .bss
  56 PageDirectoryStart:
  57 pml4_startup:
  58         .fill 4096, 1, 0
  59
  60 pdp_startup:
  61         .fill 4096, 1, 0
  62
  63 pd_startup:
  64         .fill 4096, 1, 0
  65
  66 PageDirectoryEnd:
  67
  68 END