1 /* $NetBSD: acpidump.c,v 1.8 2020/12/06 02:57:30 jmcneill Exp $ */
2
3 /*-
4 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: head/usr.sbin/acpi/acpidump/acpidump.c 302788 2016-07-13 22:53:30Z andrew $
29 */
30
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: acpidump.c,v 1.8 2020/12/06 02:57:30 jmcneill Exp $");
33
34
35 #include <sys/param.h>
36 #include <assert.h>
37 #include <err.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <unistd.h>
42
43 #include "acpidump.h"
44
45 int cflag; /* Dump unknown table data as characters */
46 int dflag; /* Disassemble AML using iasl(8) */
47 int sflag; /* Skip tables with bad checksums */
48 int tflag; /* Dump contents of SDT tables */
49 int vflag; /* Use verbose messages */
50
51 __dead static void
usage(void)52 usage(void)
53 {
54 const char *progname = getprogname();
55
56 fprintf(stderr, "usage: %s [-cdhstv] "
57 "[-f dsdt_input] [-o dsdt_output]\n", progname);
58 fprintf(stderr, "To send ASL:\n\t%s -dt | gzip -c9 > foo.asl.gz\n",
59 progname);
60 exit(EXIT_FAILURE);
61 }
62
63 int
main(int argc,char * argv[])64 main(int argc, char *argv[])
65 {
66 ACPI_TABLE_HEADER *rsdt, *sdt;
67 int c;
68 char *dsdt_input_file, *dsdt_output_file;
69
70 dsdt_input_file = dsdt_output_file = NULL;
71
72 if (argc < 2)
73 usage();
74
75 while ((c = getopt(argc, argv, "cdhtsvf:o:")) != -1) {
76 switch (c) {
77 case 'c':
78 cflag = 1;
79 break;
80 case 'd':
81 dflag = 1;
82 break;
83 case 's':
84 sflag = 1;
85 break;
86 case 't':
87 tflag = 1;
88 break;
89 case 'v':
90 vflag = 1;
91 break;
92 case 'f':
93 dsdt_input_file = optarg;
94 break;
95 case 'o':
96 dsdt_output_file = optarg;
97 break;
98 case 'h':
99 default:
100 usage();
101 /* NOTREACHED */
102 }
103 }
104 argc -= optind;
105 argv += optind;
106
107 /* Get input either from file or /dev/acpi */
108 if (dsdt_input_file != NULL) {
109 if (dflag == 0 && tflag == 0) {
110 warnx("Need to specify -d or -t with DSDT input file");
111 usage();
112 } else if (tflag != 0) {
113 warnx("Can't use -t with DSDT input file");
114 usage();
115 }
116 if (vflag)
117 warnx("loading DSDT file: %s", dsdt_input_file);
118 rsdt = dsdt_load_file(dsdt_input_file);
119 } else {
120 if (vflag)
121 warnx("loading RSD PTR from /dev/acpi");
122 rsdt = sdt_load_devmem();
123 }
124
125 /* Display misc. SDT tables (only available when using /dev/acpi) */
126 if (tflag) {
127 if (vflag)
128 warnx("printing various SDT tables");
129 sdt_print_all(rsdt);
130 }
131
132 /* Translate RSDT to DSDT pointer */
133 if (dsdt_input_file == NULL) {
134 sdt = sdt_from_rsdt(rsdt, ACPI_SIG_FADT, NULL);
135 sdt = dsdt_from_fadt((ACPI_TABLE_FADT *)sdt);
136 } else {
137 sdt = rsdt;
138 rsdt = NULL;
139 }
140
141 /* Dump the DSDT and SSDTs to a file */
142 if (dsdt_output_file != NULL) {
143 if (vflag)
144 warnx("saving DSDT file: %s", dsdt_output_file);
145 dsdt_save_file(dsdt_output_file, rsdt, sdt);
146 }
147
148 /* Disassemble the DSDT into ASL */
149 if (dflag) {
150 if (vflag)
151 warnx("disassembling DSDT, iasl messages follow");
152 aml_disassemble(rsdt, sdt);
153 if (vflag)
154 warnx("iasl processing complete");
155 }
156
157 exit(EXIT_SUCCESS);
158 }
159