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: releng/8.3/sys/i386/acpica/OsdEnvironment.c 221125 2011-04-27 18:00:46Z jhb $");
30
31 /*
32 * 6.1 : Environmental support
33 */
34 #include <sys/types.h>
35 #include <sys/bus.h>
36 #include <sys/sysctl.h>
37
38 #include <contrib/dev/acpica/include/acpi.h>
39 #include <contrib/dev/acpica/include/actables.h>
40
41 static u_long i386_acpi_root;
42
43 SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &i386_acpi_root, 0,
44 "The physical address of the RSDP");
45
46 ACPI_STATUS
47 AcpiOsInitialize(void)
48 {
49 return(0);
50 }
51
52 ACPI_STATUS
53 AcpiOsTerminate(void)
54 {
55 return(0);
56 }
57
58 ACPI_PHYSICAL_ADDRESS
59 AcpiOsGetRootPointer(void)
60 {
61 u_long ptr;
62
63 if (i386_acpi_root == 0 &&
64 (resource_long_value("acpi", 0, "rsdp", (long *)&ptr) == 0 ||
65 AcpiFindRootPointer((ACPI_SIZE *)&ptr) == AE_OK) &&
66 ptr != 0)
67 i386_acpi_root = ptr;
68
69 return (i386_acpi_root);
70 }
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