1 /*-
2 * Copyright (c) 2000,2001 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: src/sys/amd64/acpica/OsdEnvironment.c,v 1.14 2007/03/22 18:16:38 jkim Exp $");
30
31 /*
32 * 6.1 : Environmental support
33 */
34 #include <sys/types.h>
35 #include <sys/bus.h>
36 #include <sys/linker_set.h>
37 #include <sys/sysctl.h>
38
39 #include <contrib/dev/acpica/acpi.h>
40 #include <contrib/dev/acpica/actables.h>
41
42 static u_long amd64_acpi_root;
43
44 SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &amd64_acpi_root, 0,
45 "The physical address of the RSDP");
46
47 ACPI_STATUS
48 AcpiOsInitialize(void)
49 {
50 return(0);
51 }
52
53 ACPI_STATUS
54 AcpiOsTerminate(void)
55 {
56 return(0);
57 }
58
59 ACPI_PHYSICAL_ADDRESS
60 AcpiOsGetRootPointer(void)
61 {
62 u_long ptr;
63
64 if (amd64_acpi_root == 0 &&
65 (resource_long_value("acpi", 0, "rsdp", (long *)&ptr) == 0 ||
66 AcpiFindRootPointer((ACPI_NATIVE_UINT *)&ptr) == AE_OK) &&
67 ptr != 0)
68 amd64_acpi_root = ptr;
69
70 return (amd64_acpi_root);
71 }
72 Cache object: 5c788fc1a03906f98a24be2d3be23c7e
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