xref: /xnu-11417.140.69/osfmk/x86_64/lowmem_vectors.c (revision 43a90889846e00bfb5cf1d255cdc0a701a1e05a4)
1 /*
2  * Copyright (c) 2000-2011 Apple Computer, 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 
29 /*
30  * @OSF_COPYRIGHT@
31  */
32 /*
33  * Mach Operating System
34  * Copyright (c) 1991,1990 Carnegie Mellon University
35  * All Rights Reserved.
36  *
37  * Permission to use, copy, modify and distribute this software and its
38  * documentation is hereby granted, provided that both the copyright
39  * notice and this permission notice appear in all copies of the
40  * software, derivative works or modified versions, and any portions
41  * thereof, and that both notices appear in supporting documentation.
42  *
43  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
44  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
45  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
46  *
47  * Carnegie Mellon requests users of this software to return to
48  *
49  *  Software Distribution Coordinator  or  [email protected]
50  *  School of Computer Science
51  *  Carnegie Mellon University
52  *  Pittsburgh PA 15213-3890
53  *
54  * any improvements or extensions that they make and grant Carnegie Mellon
55  * the rights to redistribute these changes.
56  */
57 
58 #include <mach_kdp.h>
59 #include <mach/vm_param.h>
60 #include <x86_64/lowglobals.h>
61 
62 /*
63  * on x86_64 the low mem vectors live here and get mapped to 0xffffff8000002000 at
64  * system startup time
65  */
66 
67 extern void         *version;
68 extern void         *kmod;
69 extern void         *kdp_trans_off;
70 extern void         *kdp_read_io;
71 extern void         *osversion;
72 extern void         *flag_kdp_trigger_reboot;
73 extern void         *manual_pkt;
74 extern void         *kdp_jtag_coredump;
75 extern vm_offset_t  c_buffers;
76 extern vm_size_t    c_buffers_size;
77 
78 lowglo lowGlo __attribute__ ((aligned(PAGE_SIZE))) = {
79 	.lgVerCode              = { 'C', 'a', 't', 'f', 'i', 's', 'h', ' ' },
80 
81 	// Increment major version for changes that break the current usage of lowGlow
82 	.lgLayoutMajorVersion   = 0,
83 	// Increment minor version for changes that provide additional fields but do
84 	// not break the current usage of lowGlow
85 	.lgLayoutMinorVersion   = 1,
86 
87 	// Kernel version (not lowglo layout version)
88 	.lgVersion              = (uint64_t) &version,
89 
90 	// Kernel compressor buffers
91 	.lgCompressorBufferAddr = (uint64_t) &c_buffers,
92 	.lgCompressorSizeAddr   = (uint64_t) &c_buffers_size,
93 
94 	.lgKmodptr              = (uint64_t) &kmod,
95 
96 #if MACH_KDP
97 	.lgTransOff             = (uint64_t) &kdp_trans_off,
98 	.lgReadIO               = (uint64_t) &kdp_read_io,
99 #else
100 	.lgTransOff             = 0,
101 	.lgReadIO               = 0,
102 #endif
103 
104 	.lgDevSlot1             = 0,
105 	.lgDevSlot2             = 0,
106 
107 	.lgOSVersion            = (uint64_t) &osversion,
108 
109 #if MACH_KDP
110 	.lgRebootFlag           = (uint64_t) &flag_kdp_trigger_reboot,
111 	.lgManualPktAddr        = (uint64_t) &manual_pkt,
112 #else
113 	.lgRebootFlag           = 0,
114 	.lgManualPktAddr        = 0,
115 #endif
116 	.lgKdpJtagCoredumpAddr  = (uint64_t) &kdp_jtag_coredump
117 };
118