freebsd-dev/sys/x86/include/init.h
Roger Pau Monné 9dba82a442 x86: improve reservation of AP trampoline memory
So that it doesn't rely on physmap[1] containing an address below
1MiB. Instead scan the full physmap and search for a suitable address
to place the trampoline code (below 1MiB) and the initial memory pages
(below 4GiB).

Sponsored by:		Citrix Systems R&D
Reviewed by:		kib
Differential Revision:	https://reviews.freebsd.org/D14878
2018-04-05 14:39:51 +00:00

61 lines
2.2 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 Roger Pau Monné <roger.pau@citrix.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __X86_INIT_H__
#define __X86_INIT_H__
/*
* Struct containing pointers to init functions whose
* implementation is run time selectable. Selection can be made,
* for example, based on detection of a BIOS variant or
* hypervisor environment.
*/
struct init_ops {
caddr_t (*parse_preload_data)(u_int64_t);
void (*early_clock_source_init)(void);
void (*early_delay)(int);
void (*parse_memmap)(caddr_t, vm_paddr_t *, int *);
void (*mp_bootaddress)(vm_paddr_t *, unsigned int *);
int (*start_all_aps)(void);
void (*msi_init)(void);
};
extern struct init_ops init_ops;
/* Knob to disable acpi_cpu devices */
extern bool acpi_cpu_disabled;
/* Knob to disable acpi_hpet device */
extern bool acpi_hpet_disabled;
/* Knob to disable acpi_timer device */
extern bool acpi_timer_disabled;
#endif /* __X86_INIT_H__ */