projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 3e170ce0 | 2 | * Copyright (c) 2015 Apple Inc. All rights reserved. |
| 1c79356b | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 3e170ce0 | 5 | * |
| 2d21ac55 A |
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. | |
| 3e170ce0 | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 3e170ce0 | 17 | * |
| 2d21ac55 A |
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 | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 3e170ce0 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b | 27 | */ |
| 3e170ce0 A |
28 | |
| 29 | #ifndef _SYS_MEMORY_MAINTENANCE_H_ | |
| 30 | #define _SYS_MEMORY_MAINTENANCE_H_ | |
| 31 | ||
| 1c79356b | 32 | /* |
| 3e170ce0 A |
33 | * File: sys/memory_maintenance.h |
| 34 | * Author: Samuel Gosselin [sgosselin@apple.com] | |
| 35 | * | |
| 36 | * Header file for Memory Maintenance support. | |
| 1c79356b A |
37 | */ |
| 38 | ||
| 3e170ce0 A |
39 | /* |
| 40 | * The kern.darkboot sysctl can be controlled from kexts or userspace. If | |
| 41 | * processes want to change the sysctl value, they require the | |
| 42 | * 'com.apple.kern.darkboot' entitlement. | |
| 43 | * | |
| 44 | * Operating the kern.darkboot sysctl is done via using the commands below: | |
| 45 | * | |
| 46 | * - MEMORY_MAINTENANCE_DARK_BOOT_UNSET | |
| 47 | * Unset the kern.darkboot sysctl (kern.sysctl=0). | |
| 48 | * - MEMORY_MAINTENANCE_DARK_BOOT_SET | |
| 49 | * Set the kern.darkboot sysctl (kern.sysctl=1). | |
| 50 | * - MEMORY_MAINTENANCE_DARK_BOOT_SET_PERSISTENT | |
| 51 | * Set the kern.darkboot sysctl (kern.sysctl=1) and save its | |
| 52 | * value into the 'darkboot' NVRAM variable. | |
| 53 | * | |
| 54 | * Example: | |
| 55 | * sysctl kern.darkboot=2 | |
| 1c79356b | 56 | */ |
| 3e170ce0 A |
57 | #define MEMORY_MAINTENANCE_DARK_BOOT_UNSET (0) |
| 58 | #define MEMORY_MAINTENANCE_DARK_BOOT_SET (1) | |
| 59 | #define MEMORY_MAINTENANCE_DARK_BOOT_SET_PERSISTENT (2) | |
| 60 | ||
| 61 | #define MEMORY_MAINTENANCE_DARK_BOOT_NVRAM_NAME "darkboot" | |
| 62 | ||
| 63 | #endif /* _SYS_MEMORY_MAINTENANCE_H_ */ | |
| 64 |