OsdEnvironment.c revision 108026 
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 *	$FreeBSD: head/sys/ia64/acpica/OsdEnvironment.c 108026 2002-12-18 08:47:07Z marcel $
28 */
29
30/*
31 * 6.1 : Environmental support
32 */
33#include <sys/types.h>
34#include <sys/linker_set.h>
35#include <sys/sysctl.h>
36
37#include "acpi.h"
38
39extern u_int64_t ia64_efi_acpi_table;
40extern u_int64_t ia64_efi_acpi20_table;
41
42u_long ia64_acpi_root;
43
44SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &ia64_acpi_root, 0,
45    "The physical address of the RSDP");
46
47ACPI_STATUS
48AcpiOsInitialize(void)
49{
50
51	return(NULL);
52}
53
54ACPI_STATUS
55AcpiOsTerminate(void)
56{
57
58	return(NULL);
59}
60
61ACPI_STATUS
62AcpiOsGetRootPointer(UINT32 Flags, ACPI_POINTER *RsdpAddress)
63{
64
65	if (ia64_acpi_root == 0) {
66		if (ia64_efi_acpi20_table) {
67			/* XXX put under bootverbose. */
68			printf("Using ACPI2.0 table at 0x%lx\n",
69			    ia64_efi_acpi20_table);
70			ia64_acpi_root = ia64_efi_acpi20_table;
71		} else if (ia64_efi_acpi_table) {
72			/* XXX put under bootverbose. */
73			printf("Using ACPI1.x table at 0x%lx\n",
74			    ia64_efi_acpi_table);
75			ia64_acpi_root = ia64_efi_acpi_table;
76		} else
77			return(AE_NOT_FOUND);
78	}
79
80	RsdpAddress->PointerType = ACPI_PHYSICAL_POINTER;
81	RsdpAddress->Pointer.Physical = ia64_acpi_root;
82	return(AE_OK);
83}
84