scripts/dtc/dtc.c

   1 /*
   2  * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
   3  *
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *  General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  18  *                                                                   USA
  19  */
  20
  21 #include "dtc.h"
  22 #include "srcpos.h"
  23
  24 /*
  25  * Command line options
  26  */
  27 int quiet;              /* Level of quietness */
  28 int reservenum;         /* Number of memory reservation slots */
  29 int minsize;            /* Minimum blob size */
  30 int padsize;            /* Additional padding to blob */
  31 int phandle_format = PHANDLE_BOTH;      /* Use linux,phandle or phandle properties */
  32
  33 static void fill_fullpaths(struct node *tree, const char *prefix)
  34 {
  35         struct node *child;
  36         const char *unit;
  37
  38         tree->fullpath = join_path(prefix, tree->name);
  39
  40         unit = strchr(tree->name, '@');
  41         if (unit)
  42                 tree->basenamelen = unit - tree->name;
  43         else
  44                 tree->basenamelen = strlen(tree->name);
  45
  46         for_each_child(tree, child)
  47                 fill_fullpaths(child, tree->fullpath);
  48 }
  49
  50 /* Usage related data. */
  51 static const char usage_synopsis[] = "dtc [options] <input file>";
  52 static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
  53 static struct option const usage_long_opts[] = {
  54         {"quiet",            no_argument, NULL, 'q'},
  55         {"in-format",         a_argument, NULL, 'I'},
  56         {"out",               a_argument, NULL, 'o'},
  57         {"out-format",        a_argument, NULL, 'O'},
  58         {"out-version",       a_argument, NULL, 'V'},
  59         {"out-dependency",    a_argument, NULL, 'd'},
  60         {"reserve",           a_argument, NULL, 'R'},
  61         {"space",             a_argument, NULL, 'S'},
  62         {"pad",               a_argument, NULL, 'p'},
  63         {"boot-cpu",          a_argument, NULL, 'b'},
  64         {"force",            no_argument, NULL, 'f'},
  65         {"include",           a_argument, NULL, 'i'},
  66         {"sort",             no_argument, NULL, 's'},
  67         {"phandle",           a_argument, NULL, 'H'},
  68         {"warning",           a_argument, NULL, 'W'},
  69         {"error",             a_argument, NULL, 'E'},
  70         {"help",             no_argument, NULL, 'h'},
  71         {"version",          no_argument, NULL, 'v'},
  72         {NULL,               no_argument, NULL, 0x0},
  73 };
  74 static const char * const usage_opts_help[] = {
  75         "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all",
  76         "\n\tInput formats are:\n"
  77          "\t\tdts - device tree source text\n"
  78          "\t\tdtb - device tree blob\n"
  79          "\t\tfs  - /proc/device-tree style directory",
  80         "\n\tOutput file",
  81         "\n\tOutput formats are:\n"
  82          "\t\tdts - device tree source text\n"
  83          "\t\tdtb - device tree blob\n"
  84          "\t\tasm - assembler source",
  85         "\n\tBlob version to produce, defaults to %d (for dtb and asm output)", //, DEFAULT_FDT_VERSION);
  86         "\n\tOutput dependency file",
  87         "\n\ttMake space for <number> reserve map entries (for dtb and asm output)",
  88         "\n\tMake the blob at least <bytes> long (extra space)",
  89         "\n\tAdd padding to the blob of <bytes> long (extra space)",
  90         "\n\tSet the physical boot cpu",
  91         "\n\tTry to produce output even if the input tree has errors",
  92         "\n\tAdd a path to search for include files",
  93         "\n\tSort nodes and properties before outputting (useful for comparing trees)",
  94         "\n\tValid phandle formats are:\n"
  95          "\t\tlegacy - \"linux,phandle\" properties only\n"
  96          "\t\tepapr  - \"phandle\" properties only\n"
  97          "\t\tboth   - Both \"linux,phandle\" and \"phandle\" properties",
  98         "\n\tEnable/disable warnings (prefix with \"no-\")",
  99         "\n\tEnable/disable errors (prefix with \"no-\")",
 100         "\n\tPrint this help and exit",
 101         "\n\tPrint version and exit",
 102         NULL,
 103 };
 104
 105 int main(int argc, char *argv[])
 106 {
 107         struct boot_info *bi;
 108         const char *inform = "dts";
 109         const char *outform = "dts";
 110         const char *outname = "-";
 111         const char *depname = NULL;
 112         int force = 0, sort = 0;
 113         const char *arg;
 114         int opt;
 115         FILE *outf = NULL;
 116         int outversion = DEFAULT_FDT_VERSION;
 117         long long cmdline_boot_cpuid = -1;
 118
 119         quiet      = 0;
 120         reservenum = 0;
 121         minsize    = 0;
 122         padsize    = 0;
 123
 124         while ((opt = util_getopt_long()) != EOF) {
 125                 switch (opt) {
 126                 case 'I':
 127                         inform = optarg;
 128                         break;
 129                 case 'O':
 130                         outform = optarg;
 131                         break;
 132                 case 'o':
 133                         outname = optarg;
 134                         break;
 135                 case 'V':
 136                         outversion = strtol(optarg, NULL, 0);
 137                         break;
 138                 case 'd':
 139                         depname = optarg;
 140                         break;
 141                 case 'R':
 142                         reservenum = strtol(optarg, NULL, 0);
 143                         break;
 144                 case 'S':
 145                         minsize = strtol(optarg, NULL, 0);
 146                         break;
 147                 case 'p':
 148                         padsize = strtol(optarg, NULL, 0);
 149                         break;
 150                 case 'f':
 151                         force = 1;
 152                         break;
 153                 case 'q':
 154                         quiet++;
 155                         break;
 156                 case 'b':
 157                         cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
 158                         break;
 159                 case 'i':
 160                         srcfile_add_search_path(optarg);
 161                         break;
 162                 case 'v':
 163                         util_version();
 164                 case 'H':
 165                         if (streq(optarg, "legacy"))
 166                                 phandle_format = PHANDLE_LEGACY;
 167                         else if (streq(optarg, "epapr"))
 168                                 phandle_format = PHANDLE_EPAPR;
 169                         else if (streq(optarg, "both"))
 170                                 phandle_format = PHANDLE_BOTH;
 171                         else
 172                                 die("Invalid argument \"%s\" to -H option\n",
 173                                     optarg);
 174                         break;
 175
 176                 case 's':
 177                         sort = 1;
 178                         break;
 179
 180                 case 'W':
 181                         parse_checks_option(true, false, optarg);
 182                         break;
 183
 184                 case 'E':
 185                         parse_checks_option(false, true, optarg);
 186                         break;
 187
 188                 case 'h':
 189                         usage(NULL);
 190                 default:
 191                         usage("unknown option");
 192                 }
 193         }
 194
 195         if (argc > (optind+1))
 196                 usage("missing files");
 197         else if (argc < (optind+1))
 198                 arg = "-";
 199         else
 200                 arg = argv[optind];
 201
 202         /* minsize and padsize are mutually exclusive */
 203         if (minsize && padsize)
 204                 die("Can't set both -p and -S\n");
 205
 206         if (depname) {
 207                 depfile = fopen(depname, "w");
 208                 if (!depfile)
 209                         die("Couldn't open dependency file %s: %s\n", depname,
 210                             strerror(errno));
 211                 fprintf(depfile, "%s:", outname);
 212         }
 213
 214         if (streq(inform, "dts"))
 215                 bi = dt_from_source(arg);
 216         else if (streq(inform, "fs"))
 217                 bi = dt_from_fs(arg);
 218         else if(streq(inform, "dtb"))
 219                 bi = dt_from_blob(arg);
 220         else
 221                 die("Unknown input format \"%s\"\n", inform);
 222
 223         if (depfile) {
 224                 fputc('\n', depfile);
 225                 fclose(depfile);
 226         }
 227
 228         if (cmdline_boot_cpuid != -1)
 229                 bi->boot_cpuid_phys = cmdline_boot_cpuid;
 230
 231         fill_fullpaths(bi->dt, "");
 232         process_checks(force, bi);
 233
 234         if (sort)
 235                 sort_tree(bi);
 236
 237         if (streq(outname, "-")) {
 238                 outf = stdout;
 239         } else {
 240                 outf = fopen(outname, "w");
 241                 if (! outf)
 242                         die("Couldn't open output file %s: %s\n",
 243                             outname, strerror(errno));
 244         }
 245
 246         if (streq(outform, "dts")) {
 247                 dt_to_source(outf, bi);
 248         } else if (streq(outform, "dtb")) {
 249                 dt_to_blob(outf, bi, outversion);
 250         } else if (streq(outform, "asm")) {
 251                 dt_to_asm(outf, bi, outversion);
 252         } else if (streq(outform, "null")) {
 253                 /* do nothing */
 254         } else {
 255                 die("Unknown output format \"%s\"\n", outform);
 256         }
 257
 258         exit(0);
 259 }