LXR qemu/hw/i386/e820_memory

   1/*
   2 * QEMU BIOS e820 routines
   3 *
   4 * Copyright (c) 2003-2004 Fabrice Bellard
   5 *
   6 * SPDX-License-Identifier: MIT
   7 */
   8
   9#ifndef HW_I386_E820_H
  10#define HW_I386_E820_H
  11
  12/* e820 types */
  13#define E820_RAM        1
  14#define E820_RESERVED   2
  15#define E820_ACPI       3
  16#define E820_NVS        4
  17#define E820_UNUSABLE   5
  18
  19#define E820_NR_ENTRIES 16
  20
  21struct e820_entry {
  22    uint64_t address;
  23    uint64_t length;
  24    uint32_t type;
  25} QEMU_PACKED __attribute((__aligned__(4)));
  26
  27struct e820_table {
  28    uint32_t count;
  29    struct e820_entry entry[E820_NR_ENTRIES];
  30} QEMU_PACKED __attribute((__aligned__(4)));
  31
  32extern struct e820_table e820_reserve;
  33extern struct e820_entry *e820_table;
  34
  35int e820_add_entry(uint64_t address, uint64_t length, uint32_t type);
  36int e820_get_num_entries(void);
  37bool e820_get_entry(int index, uint32_t type,
  38                    uint64_t *address, uint64_t *length);
  39
  40
  41
  42#endif
  43