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	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22
	23	#include <i386/misc_protos.h>
	24	#include <i386/proc_reg.h>
	25	#include <i386/pmap.h>
	26	#include <i386/mtrr.h>
	27	#include <i386/acpi.h>
	28	#include <i386/mp.h>
	29
	30	#include <kern/cpu_data.h>
	31
	32	#include <IOKit/IOHibernatePrivate.h>
	33	#include <IOKit/IOPlatformExpert.h>
	34
	35	extern void acpi_sleep_cpu(acpi_sleep_callback, void * refcon);
	36	extern char acpi_wake_start[];
	37	extern char acpi_wake_end[];
	38
	39	extern int serial_init(void);
	40	extern unsigned int disableSerialOuput;
	41
	42	extern void set_kbd_leds(int leds);
	43
	44	vm_offset_t
	45	acpi_install_wake_handler(void)
	46	{
	47	/* copy wake code to ACPI_WAKE_ADDR in low memory */
	48	bcopy_phys((addr64_t) kvtophys((vm_offset_t)acpi_wake_start),
	49	(addr64_t) ACPI_WAKE_ADDR,
	50	acpi_wake_end - acpi_wake_start);
	51
	52	/* flush cache */
	53	wbinvd();
	54
	55	/* return physical address of the wakeup code */
	56	return ACPI_WAKE_ADDR;
	57	}
	58
	59	typedef struct acpi_hibernate_callback_data {
	60	acpi_sleep_callback func;
	61	void *refcon;
	62	} acpi_hibernate_callback_data;
	63
	64	static void
	65	acpi_hibernate(void *refcon)
	66	{
	67	boolean_t hib;
	68
	69	acpi_hibernate_callback_data data = (acpi_hibernate_callback_data )refcon;
	70
	71	if (current_cpu_datap()->cpu_hibernate) {
	72	hib = hibernate_write_image();
	73	}
	74
	75	(data->func)(data->refcon);
	76
	77	/* should never get here! */
	78	}
	79
	80	void
	81	acpi_sleep_kernel(acpi_sleep_callback func, void *refcon)
	82	{
	83	acpi_hibernate_callback_data data;
	84	boolean_t did_hibernate;
	85
	86	/* shutdown local APIC before passing control to BIOS */
	87	lapic_shutdown();
	88
	89	data.func = func;
	90	data.refcon = refcon;
	91
	92	/*
	93	* Save master CPU state and sleep platform.
	94	* Will not return until platform is woken up,
	95	* or if sleep failed.
	96	*/
	97	acpi_sleep_cpu(acpi_hibernate, &data);
	98
	99	/* reset UART if kprintf is enabled */
	100	if (FALSE == disableSerialOuput)
	101	serial_init();
	102
	103	if (current_cpu_datap()->cpu_hibernate) {
	104	* (int *) CM1 = 0;
	105	* (int *) CM2 = 0;
	106	* (int *) CM3 = 0;
	107
	108	current_cpu_datap()->cpu_hibernate = 0;
	109
	110	did_hibernate = TRUE;
	111	} else {
	112	did_hibernate = FALSE;
	113	}
	114
	115	/* restore MTRR settings */
	116	mtrr_update_cpu();
	117
	118	/* set up PAT following boot processor power up */
	119	pat_init();
	120
	121	if (did_hibernate) {
	122	hibernate_machine_init();
	123	}
	124
	125	/* re-enable and re-init local apic */
	126	if (lapic_probe())
	127	lapic_init();
	128
	129	/* let the realtime clock reset */
	130	rtc_sleep_wakeup();
	131
	132	if (did_hibernate) {
	133	enable_preemption();
	134	}
	135	}