1/*
2 * Copyright (c) 2008 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_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 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.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
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
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28#include <i386/pmap.h>
29#include <i386/proc_reg.h>
30#include <IOKit/IOHibernatePrivate.h>
31
32#include <i386/pal_hibernate.h>
33
34extern pd_entry_t BootPTD[2048];
35
36// src is virtually mapped, not page aligned,
37// dst is a physical 4k page aligned ptr, len is one 4K page
38// src & dst will not overlap
39
40uintptr_t
41hibernate_restore_phys_page(uint64_t src, uint64_t dst, uint32_t len, uint32_t procFlags)
42{
43 (void)procFlags;
44 uint64_t * d;
45 uint64_t * s;
46
47 if (src == 0)
48 return (uintptr_t)dst;
49
50 d = (uint64_t *)pal_hib_map(DEST_COPY_AREA, dst);
51 s = (uint64_t *) (uintptr_t)src;
52
53 __nosan_memcpy(d, s, len);
54
55 return (uintptr_t)d;
56}
57#undef hibprintf
58
59void hibprintf(const char *fmt, ...);
60
61uintptr_t
62pal_hib_map(uintptr_t virt, uint64_t phys)
63{
64 uintptr_t index;
65
66 switch (virt)
67 {
68 case DEST_COPY_AREA:
69 case SRC_COPY_AREA:
70 case COPY_PAGE_AREA:
71 case BITMAP_AREA:
72 case IMAGE_AREA:
73 case IMAGE2_AREA:
74 break;
75
76 default:
77 asm("cli;hlt;");
78 break;
79 }
80 if (phys < IMAGE2_AREA)
81 {
82 // first 4Gb is all mapped,
83 // and do not expect source areas to cross 4Gb
84 return (phys);
85 }
86 index = (virt >> I386_LPGSHIFT);
87 virt += (uintptr_t)(phys & I386_LPGMASK);
88 phys = ((phys & ~((uint64_t)I386_LPGMASK)) | INTEL_PTE_PS | INTEL_PTE_VALID | INTEL_PTE_WRITE);
89 if (phys == BootPTD[index]) return (virt);
90 BootPTD[index] = phys;
91 invlpg(virt);
92 BootPTD[index + 1] = (phys + I386_LPGBYTES);
93 invlpg(virt + I386_LPGBYTES);
94
95 return (virt);
96}
97
98void hibernateRestorePALState(uint32_t *arg)
99{
100 (void)arg;
101}
102
103void
104pal_hib_patchup(void)
105{
106}
107