xref: /freebsd/sys/x86/include/init.h (revision 02e9120893770924227138ba49df1edb3896112a)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2013 Roger Pau Monné <roger.pau@citrix.com>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #ifndef __X86_INIT_H__
30 #define __X86_INIT_H__
31 /*
32  * Struct containing pointers to init functions whose
33  * implementation is run time selectable.  Selection can be made,
34  * for example, based on detection of a BIOS variant or
35  * hypervisor environment.
36  */
37 struct init_ops {
38 	caddr_t	(*parse_preload_data)(u_int64_t);
39 	void	(*early_clock_source_init)(void);
40 	void	(*early_delay)(int);
41 	void	(*parse_memmap)(caddr_t, vm_paddr_t *, int *);
42 };
43 
44 extern struct init_ops init_ops;
45 
46 /* Knob to disable acpi_cpu devices */
47 extern bool acpi_cpu_disabled;
48 
49 /* Knob to disable acpi_hpet device */
50 extern bool acpi_hpet_disabled;
51 
52 /* Knob to disable acpi_timer device */
53 extern bool acpi_timer_disabled;
54 
55 #endif /* __X86_INIT_H__ */
56