xref: /freebsd/usr.sbin/acpi/acpidump/acpidump.c (revision 3642298923e528d795e3a30ec165d2b469e28b40)
1 /*-
2  * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
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  *	$FreeBSD$
27  */
28 
29 #include <sys/param.h>
30 #include <assert.h>
31 #include <err.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <unistd.h>
36 
37 #include "acpidump.h"
38 
39 int	dflag;	/* Disassemble AML using iasl(8) */
40 int	tflag;	/* Dump contents of SDT tables */
41 int	vflag;	/* Use verbose messages */
42 
43 static void
44 usage(const char *progname)
45 {
46 
47 	fprintf(stderr, "usage: %s [-d] [-t] [-h] [-v] [-f dsdt_input] "
48 			"[-o dsdt_output]\n", progname);
49 	exit(1);
50 }
51 
52 int
53 main(int argc, char *argv[])
54 {
55 	char	c, *progname;
56 	char	*dsdt_input_file, *dsdt_output_file;
57 	struct	ACPIsdt *rsdt, *sdt;
58 
59 	dsdt_input_file = dsdt_output_file = NULL;
60 	progname = argv[0];
61 
62 	if (argc < 2)
63 		usage(progname);
64 
65 	while ((c = getopt(argc, argv, "dhtvf:o:")) != -1) {
66 		switch (c) {
67 		case 'd':
68 			dflag = 1;
69 			break;
70 		case 't':
71 			tflag = 1;
72 			break;
73 		case 'v':
74 			vflag = 1;
75 			break;
76 		case 'f':
77 			dsdt_input_file = optarg;
78 			break;
79 		case 'o':
80 			dsdt_output_file = optarg;
81 			break;
82 		case 'h':
83 		default:
84 			usage(progname);
85 			/* NOTREACHED */
86 		}
87 	}
88 	argc -= optind;
89 	argv += optind;
90 
91 	/* Get input either from file or /dev/mem */
92 	if (dsdt_input_file != NULL) {
93 		if (dflag == 0 && tflag == 0) {
94 			warnx("Need to specify -d or -t with DSDT input file");
95 			usage(progname);
96 		} else if (tflag != 0) {
97 			warnx("Can't use -t with DSDT input file");
98 			usage(progname);
99 		}
100 		if (vflag)
101 			warnx("loading DSDT file: %s", dsdt_input_file);
102 		rsdt = dsdt_load_file(dsdt_input_file);
103 	} else {
104 		if (vflag)
105 			warnx("loading RSD PTR from /dev/mem");
106 		rsdt = sdt_load_devmem();
107 	}
108 
109 	/* Display misc. SDT tables (only available when using /dev/mem) */
110 	if (tflag) {
111 		if (vflag)
112 			warnx("printing various SDT tables");
113 		sdt_print_all(rsdt);
114 	}
115 
116 	/* Translate RSDT to DSDT pointer */
117 	if (dsdt_input_file == NULL) {
118 		sdt = sdt_from_rsdt(rsdt, "FACP", NULL);
119 		sdt = dsdt_from_fadt((struct FADTbody *)sdt->body);
120 	} else {
121 		sdt = rsdt;
122 		rsdt = NULL;
123 	}
124 
125 	/* Dump the DSDT and SSDTs to a file */
126 	if (dsdt_output_file != NULL) {
127 		if (vflag)
128 			warnx("saving DSDT file: %s", dsdt_output_file);
129 		dsdt_save_file(dsdt_output_file, rsdt, sdt);
130 	}
131 
132 	/* Disassemble the DSDT into ASL */
133 	if (dflag) {
134 		if (vflag)
135 			warnx("disassembling DSDT, iasl messages follow");
136 		aml_disassemble(rsdt, sdt);
137 		if (vflag)
138 			warnx("iasl processing complete");
139 	}
140 
141 	exit(0);
142 }
143