meson: convert hw/9pfs, cleanup
[qemu.git] / 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_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
21 struct e820_entry {
22 uint64_t address;
23 uint64_t length;
24 uint32_t type;
25 } QEMU_PACKED __attribute((__aligned__(4)));
26
27 struct e820_table {
28 uint32_t count;
29 struct e820_entry entry[E820_NR_ENTRIES];
30 } QEMU_PACKED __attribute((__aligned__(4)));
31
32 extern struct e820_table e820_reserve;
33 extern struct e820_entry *e820_table;
34
35 int e820_add_entry(uint64_t address, uint64_t length, uint32_t type);
36 int e820_get_num_entries(void);
37 bool e820_get_entry(int index, uint32_t type,
38 uint64_t *address, uint64_t *length);
39
40
41
42 #endif