OsdEnvironment.c revision 84447 
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 84447 2001-10-04 08:45:19Z dfr $
28 */
29
30/*
31 * 6.1 : Environmental support
32 */
33
34#include "acpi.h"
35
36extern u_int64_t ia64_efi_acpi_table;
37extern u_int64_t ia64_efi_acpi20_table;
38
39ACPI_STATUS
40AcpiOsInitialize(void)
41{
42
43	return(NULL);
44}
45
46ACPI_STATUS
47AcpiOsTerminate(void)
48{
49
50	return(NULL);
51}
52
53ACPI_STATUS
54AcpiOsGetRootPointer(
55    UINT32			Flags,
56    ACPI_PHYSICAL_ADDRESS	*RsdpPhysicalAddress)
57{
58	RSDP_DESCRIPTOR *rsdp;
59	XSDT_DESCRIPTOR *xsdt;
60
61	if (ia64_efi_acpi20_table) {
62		*RsdpPhysicalAddress = ia64_efi_acpi20_table;
63		rsdp = (RSDP_DESCRIPTOR *)
64			IA64_PHYS_TO_RR7(ia64_efi_acpi20_table);
65		xsdt = (XSDT_DESCRIPTOR *)
66			IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
67		ia64_parse_xsdt(xsdt);
68		return(AE_OK);
69	} else if (ia64_efi_acpi_table) {
70		*RsdpPhysicalAddress = ia64_efi_acpi_table;
71		return(AE_OK);
72	}
73
74	return(AE_NOT_FOUND);
75}
76