darling-xnu/osfmk/i386/i386_lowmem.h
2023-05-16 21:41:14 -07:00

50 lines
1.9 KiB
C

/*
* Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _I386_LOWMEM_H_
#define _I386_LOWMEM_H_
#ifdef __APPLE_API_PRIVATE
/*
* The kernel better be statically linked at VM_MIN_KERNEL_ADDRESS + 0x100000
*/
#define I386_KERNEL_IMAGE_BASE_PAGE 0x100
/* For K64, only 3 pages are reserved
* - physical page zero, a gap page, and then real-mode-bootstrap/lowGlo.
* Note that the kernel virtual address KERNEL_BASE+0x2000 is re-mapped
* to the low globals and that physical page, 0x2000, is used by the bootstrap.
*/
#define I386_LOWMEM_RESERVED 3
#endif /* __APPLE_API_PRIVATE */
#endif /* !_I386_LOWMEM_H_ */