LXR syslinux/com32/gplinclude/memory.h

   1/* ----------------------------------------------------------------------- *
   2 *
   3 *   Copyright 2009 Pierre-Alexandre Meyer
   4 *
   5 *   Some parts borrowed from meminfo.c32:
   6 *
   7 *   Copyright 2003-2009 H. Peter Anvin - All Rights Reserved
   8 *   Copyright 2009 Intel Corporation; author: H. Peter Anvin
   9 *
  10 *   Some parts borrowed from Linux:
  11 *
  12 *   Copyright (C) 1991, 1992 Linus Torvalds
  13 *   Copyright 2007 rPath, Inc. - All Rights Reserved
  14 *   Copyright 2009 Intel Corporation; author H. Peter Anvin
  15 *
  16 *   This file is part of Syslinux, and is made available under
  17 *   the terms of the GNU General Public License version 2.
  18 *
  19 * ----------------------------------------------------------------------- */
  20
  21#ifndef _MEMORY_H_
  22#define _MEMORY_H_
  23#include <stdint.h>
  24
  25#define E820MAX 128
  26#define E820_RAM        1
  27#define E820_RESERVED   2
  28#define E820_ACPI       3       /* usable as RAM once ACPI tables have been read */
  29#define E820_NVS        4
  30
  31#define RES_START       0xa0000
  32#define RES_END         0x100000
  33
  34struct e820entry {
  35    uint64_t addr;              /* start of memory segment */
  36    uint64_t size;              /* size of memory segment */
  37    uint64_t type;              /* type of memory segment */
  38} __attribute__ ((packed));
  39
  40const char *const e820_types[5];
  41
  42void get_type(int, char *, int);
  43void detect_memory_e820(struct e820entry *desc, int size_map, int *size_found);
  44int detect_memory_e801(int *, int *);
  45int detect_memory_88(int *);
  46
  47/* The following stuff could be merge once the addr_t will be set to 64bits.
  48 * syslinux_scan_memory can be used for that purpose */
  49unsigned long memsize_e820(struct e820entry *e820, int e820_nr);
  50int sanitize_e820_map(struct e820entry *orig_map, struct e820entry *new_bios,
  51                      short old_nr);
  52unsigned long detect_memsize(void);
  53#endif
  54