| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ |
| | 5 | * |
| | 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 |
| | 10 | * License may not be used to create, or enable the creation or |
| | 11 | * redistribution of, unlawful or unlicensed copies of an Apple operating |
| | 12 | * system, or to circumvent, violate, or enable the circumvention or |
| | 13 | * violation of, any terms of an Apple operating system software license |
| | 14 | * agreement. |
| | 15 | * |
| | 16 | * Please obtain a copy of the License at |
| | 17 | * http://www.opensource.apple.com/apsl/ and read it before using this |
| | 18 | * file. |
| | 19 | * |
| | 20 | * The Original Code and all software distributed under the License are |
| | 21 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 22 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 23 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 24 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 25 | * Please see the License for the specific language governing rights and |
| | 26 | * limitations under the License. |
| | 27 | * |
| | 28 | * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ |
| | 29 | */ |
| | 30 | |
| | 31 | #include <i386/misc_protos.h> |
| | 32 | #include <i386/proc_reg.h> |
| | 33 | #include <i386/pmap.h> |
| | 34 | #include <i386/mtrr.h> |
| | 35 | #include <i386/acpi.h> |
| | 36 | #include <i386/mp.h> |
| | 37 | |
| | 38 | #include <kern/cpu_data.h> |
| | 39 | |
| | 40 | #include <IOKit/IOHibernatePrivate.h> |
| | 41 | #include <IOKit/IOPlatformExpert.h> |
| | 42 | |
| | 43 | extern void acpi_sleep_cpu(acpi_sleep_callback, void * refcon); |
| | 44 | extern char acpi_wake_start[]; |
| | 45 | extern char acpi_wake_end[]; |
| | 46 | |
| | 47 | extern int serial_init(void); |
| | 48 | extern unsigned int disableSerialOuput; |
| | 49 | |
| | 50 | extern void set_kbd_leds(int leds); |
| | 51 | |
| | 52 | vm_offset_t |
| | 53 | acpi_install_wake_handler(void) |
| | 54 | { |
| | 55 | /* copy wake code to ACPI_WAKE_ADDR in low memory */ |
| | 56 | bcopy_phys((addr64_t) kvtophys((vm_offset_t)acpi_wake_start), |
| | 57 | (addr64_t) ACPI_WAKE_ADDR, |
| | 58 | acpi_wake_end - acpi_wake_start); |
| | 59 | |
| | 60 | /* flush cache */ |
| | 61 | wbinvd(); |
| | 62 | |
| | 63 | /* return physical address of the wakeup code */ |
| | 64 | return ACPI_WAKE_ADDR; |
| | 65 | } |
| | 66 | |
| | 67 | typedef struct acpi_hibernate_callback_data { |
| | 68 | acpi_sleep_callback func; |
| | 69 | void *refcon; |
| | 70 | } acpi_hibernate_callback_data; |
| | 71 | |
| | 72 | static void |
| | 73 | acpi_hibernate(void *refcon) |
| | 74 | { |
| | 75 | boolean_t hib; |
| | 76 | |
| | 77 | acpi_hibernate_callback_data *data = (acpi_hibernate_callback_data *)refcon; |
| | 78 | |
| | 79 | if (current_cpu_datap()->cpu_hibernate) { |
| | 80 | hib = hibernate_write_image(); |
| | 81 | } |
| | 82 | |
| | 83 | (data->func)(data->refcon); |
| | 84 | |
| | 85 | /* should never get here! */ |
| | 86 | } |
| | 87 | |
| | 88 | void |
| | 89 | acpi_sleep_kernel(acpi_sleep_callback func, void *refcon) |
| | 90 | { |
| | 91 | acpi_hibernate_callback_data data; |
| | 92 | boolean_t did_hibernate; |
| | 93 | |
| | 94 | /* shutdown local APIC before passing control to BIOS */ |
| | 95 | lapic_shutdown(); |
| | 96 | |
| | 97 | data.func = func; |
| | 98 | data.refcon = refcon; |
| | 99 | |
| | 100 | /* |
| | 101 | * Save master CPU state and sleep platform. |
| | 102 | * Will not return until platform is woken up, |
| | 103 | * or if sleep failed. |
| | 104 | */ |
| | 105 | acpi_sleep_cpu(acpi_hibernate, &data); |
| | 106 | |
| | 107 | /* reset UART if kprintf is enabled */ |
| | 108 | if (FALSE == disableSerialOuput) |
| | 109 | serial_init(); |
| | 110 | |
| | 111 | if (current_cpu_datap()->cpu_hibernate) { |
| | 112 | * (int *) CM1 = 0; |
| | 113 | * (int *) CM2 = 0; |
| | 114 | * (int *) CM3 = 0; |
| | 115 | |
| | 116 | current_cpu_datap()->cpu_hibernate = 0; |
| | 117 | |
| | 118 | did_hibernate = TRUE; |
| | 119 | } else { |
| | 120 | did_hibernate = FALSE; |
| | 121 | } |
| | 122 | |
| | 123 | /* restore MTRR settings */ |
| | 124 | mtrr_update_cpu(); |
| | 125 | |
| | 126 | /* set up PAT following boot processor power up */ |
| | 127 | pat_init(); |
| | 128 | |
| | 129 | if (did_hibernate) { |
| | 130 | hibernate_machine_init(); |
| | 131 | } |
| | 132 | |
| | 133 | /* re-enable and re-init local apic */ |
| | 134 | if (lapic_probe()) |
| | 135 | lapic_init(); |
| | 136 | |
| | 137 | /* let the realtime clock reset */ |
| | 138 | rtc_sleep_wakeup(); |
| | 139 | |
| | 140 | if (did_hibernate) { |
| | 141 | enable_preemption(); |
| | 142 | } |
| | 143 | } |
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