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 #include <arch/pc/x86common.h>
  27 #include <multiboot.h>
  28
  29         /*
  30          * Here we assume the kernel is loaded at 1mb
  31          * This boots the kernel
  32          */
  33         .code64
  34     .globl PageDirectoryStart
  35
  36     .globl pml4_startup
  37     .globl pdp_startup
  38     .globl pd_startup
  39
  40     .globl PageDirectoryEnd
  41
  42         //
  43         // Boot information structure
  44         //
  45
  46 EXTERN(reactos_memory_map_descriptor_size)
  47         .long   0
  48
  49 EXTERN(reactos_memory_map)
  50         .rept   (32 * /*sizeof(memory_map_t)*/24)
  51         .byte   0
  52         .endr
  53
  54 .bss
  55 PageDirectoryStart:
  56 pml4_startup:
  57         .fill 4096, 1, 0
  58
  59 pdp_startup:
  60         .fill 4096, 1, 0
  61
  62 pd_startup:
  63         .fill 4096, 1, 0
  64
  65 PageDirectoryEnd:
  66
  67 END