1 /*-
2 * Copyright (c) 2002 Mitsaru Iwasaki
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/dev/acpica/Osd/OsdTable.c,v 1.7 2004/04/20 17:13:08 njl Exp $
27 */
28
29 /*
30 * Environmental and ACPI Tables (partial)
31 */
32
33 #include "acpi.h"
34
35 #include <sys/kernel.h>
36 #include <sys/linker.h>
37
38 #undef _COMPONENT
39 #define _COMPONENT ACPI_TABLES
40
41 static char acpi_osname[128];
42 TUNABLE_STR("hw.acpi.osname", acpi_osname, sizeof(acpi_osname));
43
44 ACPI_STATUS
AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES * InitVal,ACPI_STRING * NewVal)45 AcpiOsPredefinedOverride (
46 const ACPI_PREDEFINED_NAMES *InitVal,
47 ACPI_STRING *NewVal)
48 {
49 if (InitVal == NULL || NewVal == NULL)
50 return (AE_BAD_PARAMETER);
51
52 *NewVal = NULL;
53 if (ACPI_COMPARE_NAMESEG(InitVal->Name, "_OS_") &&
54 InitVal->Type == ACPI_TYPE_STRING && strlen(acpi_osname) > 0) {
55 kprintf("ACPI: Overriding _OS definition with \"%s\"\n", acpi_osname);
56 *NewVal = acpi_osname;
57 }
58
59 return (AE_OK);
60 }
61
62 ACPI_STATUS
AcpiOsTableOverride(ACPI_TABLE_HEADER * ExistingTable,ACPI_TABLE_HEADER ** NewTable)63 AcpiOsTableOverride (
64 ACPI_TABLE_HEADER *ExistingTable,
65 ACPI_TABLE_HEADER **NewTable)
66 {
67 caddr_t acpi_dsdt, p;
68
69 if (ExistingTable == NULL || NewTable == NULL)
70 return(AE_BAD_PARAMETER);
71
72 *NewTable = NULL;
73 if (ACPI_COMPARE_NAMESEG(ExistingTable->Signature, ACPI_SIG_DSDT) == 0)
74 return(AE_SUPPORT);
75 if ((acpi_dsdt = preload_search_by_type("acpi_dsdt")) == NULL)
76 return(AE_NOT_FOUND);
77 if ((p = preload_search_info(acpi_dsdt, MODINFO_ADDR)) == NULL)
78 return(AE_ERROR);
79 *NewTable = *(void **)p;
80
81 return (AE_OK);
82 }
83
84 ACPI_STATUS
AcpiOsPhysicalTableOverride(ACPI_TABLE_HEADER * ExistingTable,ACPI_PHYSICAL_ADDRESS * NewAddress,UINT32 * NewTableLength)85 AcpiOsPhysicalTableOverride(
86 ACPI_TABLE_HEADER *ExistingTable,
87 ACPI_PHYSICAL_ADDRESS *NewAddress,
88 UINT32 *NewTableLength)
89 {
90 return (AE_SUPPORT);
91 }
92