acpidump.c revision 330449 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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: stable/11/usr.sbin/acpi/acpidump/acpidump.c 330449 2018-03-05 07:26:05Z eadler $
29 */
30
31#include <sys/param.h>
32#include <assert.h>
33#include <err.h>
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37#include <unistd.h>
38
39#include "acpidump.h"
40
41int	dflag;	/* Disassemble AML using iasl(8) */
42int	tflag;	/* Dump contents of SDT tables */
43int	vflag;	/* Use verbose messages */
44
45static void
46usage(const char *progname)
47{
48
49	fprintf(stderr, "usage: %s [-d] [-t] [-h] [-v] [-f dsdt_input] "
50			"[-o dsdt_output]\n", progname);
51	fprintf(stderr, "To send ASL:\n\t%s -dt | gzip -c9 > foo.asl.gz\n",
52	    progname);
53	exit(1);
54}
55
56int
57main(int argc, char *argv[])
58{
59	ACPI_TABLE_HEADER *rsdt, *sdt;
60	int	c;
61	char	*progname;
62	char	*dsdt_input_file, *dsdt_output_file;
63
64	dsdt_input_file = dsdt_output_file = NULL;
65	progname = argv[0];
66
67	if (argc < 2)
68		usage(progname);
69
70	while ((c = getopt(argc, argv, "dhtvf:o:")) != -1) {
71		switch (c) {
72		case 'd':
73			dflag = 1;
74			break;
75		case 't':
76			tflag = 1;
77			break;
78		case 'v':
79			vflag = 1;
80			break;
81		case 'f':
82			dsdt_input_file = optarg;
83			break;
84		case 'o':
85			dsdt_output_file = optarg;
86			break;
87		case 'h':
88		default:
89			usage(progname);
90			/* NOTREACHED */
91		}
92	}
93	argc -= optind;
94	argv += optind;
95
96	/* Get input either from file or /dev/mem */
97	if (dsdt_input_file != NULL) {
98		if (dflag == 0 && tflag == 0) {
99			warnx("Need to specify -d or -t with DSDT input file");
100			usage(progname);
101		} else if (tflag != 0) {
102			warnx("Can't use -t with DSDT input file");
103			usage(progname);
104		}
105		if (vflag)
106			warnx("loading DSDT file: %s", dsdt_input_file);
107		rsdt = dsdt_load_file(dsdt_input_file);
108	} else {
109		if (vflag)
110			warnx("loading RSD PTR from /dev/mem");
111		rsdt = sdt_load_devmem();
112	}
113
114	/* Display misc. SDT tables (only available when using /dev/mem) */
115	if (tflag) {
116		if (vflag)
117			warnx("printing various SDT tables");
118		sdt_print_all(rsdt);
119	}
120
121	/* Translate RSDT to DSDT pointer */
122	if (dsdt_input_file == NULL) {
123		sdt = sdt_from_rsdt(rsdt, ACPI_SIG_FADT, NULL);
124		sdt = dsdt_from_fadt((ACPI_TABLE_FADT *)sdt);
125	} else {
126		sdt = rsdt;
127		rsdt = NULL;
128	}
129
130	/* Dump the DSDT and SSDTs to a file */
131	if (dsdt_output_file != NULL) {
132		if (vflag)
133			warnx("saving DSDT file: %s", dsdt_output_file);
134		dsdt_save_file(dsdt_output_file, rsdt, sdt);
135	}
136
137	/* Disassemble the DSDT into ASL */
138	if (dflag) {
139		if (vflag)
140			warnx("disassembling DSDT, iasl messages follow");
141		aml_disassemble(rsdt, sdt);
142		if (vflag)
143			warnx("iasl processing complete");
144	}
145
146	exit(0);
147}
148