1/*
2 * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#ifndef _I386_LOWMEM_H_
30#define _I386_LOWMEM_H_
31
32
33#ifdef __APPLE_API_PRIVATE
34
35/*
36 * The kernel better be statically linked at VM_MIN_KERNEL_ADDRESS + 0x100000
37 */
38#define I386_KERNEL_IMAGE_BASE_PAGE 0x100
39
40/* For K64, only 3 pages are reserved
41 * - physical page zero, a gap page, and then real-mode-bootstrap/lowGlo.
42 * Note that the kernel virtual address 0xffffff8000002000 is re-mapped
43 * to the low globals and that physical page, 0x2000, is used by the bootstrap.
44 */
45#define I386_LOWMEM_RESERVED 3
46
47#endif /* __APPLE_API_PRIVATE */
48
49#endif /* !_I386_LOWMEM_H_ */
50