hw/i386/e820_memory_layout.h

   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_MEMORY_LAYOUT_H
  10 #define HW_I386_E820_MEMORY_LAYOUT_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 struct e820_entry {
  20     uint64_t address;
  21     uint64_t length;
  22     uint32_t type;
  23 } QEMU_PACKED __attribute((__aligned__(4)));
  24
  25 extern struct e820_entry *e820_table;
  26
  27 int e820_add_entry(uint64_t address, uint64_t length, uint32_t type);
  28 int e820_get_num_entries(void);
  29 bool e820_get_entry(int index, uint32_t type,
  30                     uint64_t *address, uint64_t *length);
  31
  32
  33
  34 #endif