memdisk/e820.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2001-2008 H. Peter Anvin - All Rights Reserved
   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, Inc., 53 Temple Place Ste 330,
   8  *   Boston MA 02111-1307, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 /*
  14  * e820.h
  15  *
  16  * Common routines for e820 memory map management
  17  */
  18
  19 #include <stdint.h>
  20
  21 struct e820range {
  22     uint64_t start;
  23     uint32_t type;
  24 } __attribute__ ((packed));
  25
  26 extern struct e820range ranges[];
  27 extern int nranges;
  28 extern uint32_t dos_mem, low_mem, high_mem;
  29
  30 extern void e820map_init(void);
  31 extern void insertrange(uint64_t, uint64_t, uint32_t);
  32 extern void get_mem(void);
  33 extern void parse_mem(void);