2 * QEMU BIOS e820 routines
4 * Copyright (c) 2003-2004 Fabrice Bellard
6 * SPDX-License-Identifier: MIT
9 #include "qemu/osdep.h"
10 #include "qemu/bswap.h"
11 #include "e820_memory_layout.h"
13 static size_t e820_entries
;
14 struct e820_entry
*e820_table
;
16 int e820_add_entry(uint64_t address
, uint64_t length
, uint32_t type
)
18 /* new "etc/e820" file -- include ram and reserved entries */
19 e820_table
= g_renew(struct e820_entry
, e820_table
, e820_entries
+ 1);
20 e820_table
[e820_entries
].address
= cpu_to_le64(address
);
21 e820_table
[e820_entries
].length
= cpu_to_le64(length
);
22 e820_table
[e820_entries
].type
= cpu_to_le32(type
);
28 int e820_get_num_entries(void)
33 bool e820_get_entry(int idx
, uint32_t type
, uint64_t *address
, uint64_t *length
)
35 if (idx
< e820_entries
&& e820_table
[idx
].type
== cpu_to_le32(type
)) {
36 *address
= le64_to_cpu(e820_table
[idx
].address
);
37 *length
= le64_to_cpu(e820_table
[idx
].length
);