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acpidump.c revision 1.7 
      1 /* $NetBSD: acpidump.c,v 1.7 2017/08/04 06:30:36 msaitoh Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki (at) 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 1.7 2017/08/04 06:30:36 msaitoh 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
     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
     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/mem */
    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/mem");
    122 		rsdt = sdt_load_devmem();
    123 	}
    124 
    125 	/* Display misc. SDT tables (only available when using /dev/mem) */
    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