1 /*****************************************************************************\
3 *****************************************************************************
4 * Copyright (C) 2002-2005 The Regents of the University of California.
5 * Produced at the Lawrence Livermore National Laboratory.
6 * Written by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>.
10 * This file is part of nvramtool, a utility for reading/writing coreboot
11 * parameters and displaying information from the coreboot table.
12 * For details, see http://coreboot.org/nvramtool.
14 * Please also read the file DISCLAIMER which is included in this software
17 * This program is free software; you can redistribute it and/or modify it
18 * under the terms of the GNU General Public License (as published by the
19 * Free Software Foundation) version 2, dated June 1991.
21 * This program is distributed in the hope that it will be useful, but
22 * WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
24 * conditions of the GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
29 \*****************************************************************************/
34 nvramtool_op_info_t nvramtool_op;
36 nvramtool_op_modifier_info_t nvramtool_op_modifiers[NVRAMTOOL_NUM_OP_MODIFIERS];
38 static char * handle_optional_arg (int argc, char *argv[]);
39 static void register_op (int *op_found, nvramtool_op_t op, char op_param[]);
40 static void register_op_modifier (nvramtool_op_modifier_t mod, char mod_param[]);
41 static void resolve_op_modifiers (void);
42 static void sanity_check_args (void);
44 static const char getopt_string[] = "-ab:B:c::de:hil::np:r:tvw:xX:y:Y";
46 /****************************************************************************
47 * parse_nvramtool_args
49 * Parse command line arguments.
50 ****************************************************************************/
51 void parse_nvramtool_args (int argc, char *argv[])
52 { nvramtool_op_modifier_info_t *mod_info;
56 for (i = 0, mod_info = nvramtool_op_modifiers;
57 i < NVRAMTOOL_NUM_OP_MODIFIERS;
59 { mod_info->found = FALSE;
60 mod_info->found_seq = 0;
61 mod_info->param = NULL;
68 { switch (c = getopt(argc, argv, getopt_string))
70 register_op(&op_found, NVRAMTOOL_OP_CMOS_SHOW_ALL_PARAMS, NULL);
73 register_op(&op_found, NVRAMTOOL_OP_WRITE_CMOS_DUMP, optarg);
76 register_op(&op_found, NVRAMTOOL_OP_READ_CMOS_DUMP, optarg);
79 register_op(&op_found, NVRAMTOOL_OP_CMOS_CHECKSUM,
80 handle_optional_arg(argc, argv));
83 register_op(&op_found, NVRAMTOOL_OP_LBTABLE_DUMP, NULL);
86 register_op(&op_found, NVRAMTOOL_OP_SHOW_PARAM_VALUES, optarg);
89 register_op(&op_found, NVRAMTOOL_OP_SHOW_USAGE, NULL);
92 register_op(&op_found, NVRAMTOOL_OP_CMOS_SET_PARAMS_STDIN, NULL);
95 register_op(&op_found, NVRAMTOOL_OP_LBTABLE_SHOW_INFO,
96 handle_optional_arg(argc, argv));
99 register_op_modifier(NVRAMTOOL_MOD_SHOW_VALUE_ONLY, NULL);
102 register_op(&op_found, NVRAMTOOL_OP_CMOS_SET_PARAMS_FILE, optarg);
105 register_op(&op_found, NVRAMTOOL_OP_CMOS_SHOW_ONE_PARAM, optarg);
108 register_op_modifier(NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE, NULL);
111 register_op(&op_found, NVRAMTOOL_OP_SHOW_VERSION, NULL);
114 register_op(&op_found, NVRAMTOOL_OP_CMOS_SET_ONE_PARAM, optarg);
117 register_op(&op_found, NVRAMTOOL_OP_SHOW_CMOS_HEX_DUMP, NULL);
120 register_op(&op_found, NVRAMTOOL_OP_SHOW_CMOS_DUMPFILE, optarg);
123 register_op_modifier(NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE, optarg);
126 register_op(&op_found, NVRAMTOOL_OP_SHOW_LAYOUT, NULL);
128 case -1: /* no more command line args */
130 case '?': /* unknown option found */
131 case 1: /* nonoption command line arg found */
142 resolve_op_modifiers();
146 /****************************************************************************
147 * handle_optional_arg
149 * Handle a command line option with an optional argument.
150 ****************************************************************************/
151 static char * handle_optional_arg (int argc, char *argv[])
155 { /* optional arg is present and arg was specified as "-zarg" (with no
156 * whitespace between "z" and "arg"), where -z is the option and "arg"
157 * is the value of the optional arg
162 if ((argv[optind] == NULL) || (argv[optind][0] == '-'))
165 arg = argv[optind]; /* optional arg is present */
167 /* This call to getopt yields the optional arg we just found, which we want
170 getopt(argc, argv, getopt_string);
175 /****************************************************************************
178 * Store the user's selection of which operation this program should perform.
179 ****************************************************************************/
180 static void register_op (int *op_found, nvramtool_op_t op, char op_param[])
181 { if (*op_found && (op != nvramtool_op.op))
185 nvramtool_op.op = op;
186 nvramtool_op.param = op_param;
189 /****************************************************************************
190 * register_op_modifier
192 * Store information regarding an optional argument specified in addition to
193 * the user's selection of which operation this program should perform.
194 ****************************************************************************/
195 static void register_op_modifier (nvramtool_op_modifier_t mod, char mod_param[])
196 { static int found_seq = 0;
197 nvramtool_op_modifier_info_t *mod_info;
199 mod_info = &nvramtool_op_modifiers[mod];
200 mod_info->found = TRUE;
201 mod_info->found_seq = ++found_seq;
202 mod_info->param = mod_param;
205 /****************************************************************************
206 * resolve_op_modifiers
208 * If the user specifies multiple arguments that conflict with each other,
209 * the last specified argument overrides previous conflicting arguments.
210 ****************************************************************************/
211 static void resolve_op_modifiers (void)
212 { if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].found &&
213 nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE].found)
214 { if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].found_seq >
215 nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE].found_seq)
216 nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE].found = FALSE;
218 nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].found = FALSE;
222 /****************************************************************************
225 * Perform sanity checking on command line arguments.
226 ****************************************************************************/
227 static void sanity_check_args (void)
228 { if ((nvramtool_op_modifiers[NVRAMTOOL_MOD_SHOW_VALUE_ONLY].found) &&
229 (nvramtool_op.op != NVRAMTOOL_OP_CMOS_SHOW_ONE_PARAM))