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 #define FDT_VERSION(version)    _FDT_VERSION(version)
  52 #define _FDT_VERSION(version)   #version
  53 static const char usage_synopsis[] = "dtc [options] <input file>";
  54 static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
  55 static struct option const usage_long_opts[] = {
  56         {"quiet",            no_argument, NULL, 'q'},
  57         {"in-format",         a_argument, NULL, 'I'},
  58         {"out",               a_argument, NULL, 'o'},
  59         {"out-format",        a_argument, NULL, 'O'},
  60         {"out-version",       a_argument, NULL, 'V'},
  61         {"out-dependency",    a_argument, NULL, 'd'},
  62         {"reserve",           a_argument, NULL, 'R'},
  63         {"space",             a_argument, NULL, 'S'},
  64         {"pad",               a_argument, NULL, 'p'},
  65         {"boot-cpu",          a_argument, NULL, 'b'},
  66         {"force",            no_argument, NULL, 'f'},
  67         {"include",           a_argument, NULL, 'i'},
  68         {"sort",             no_argument, NULL, 's'},
  69         {"phandle",           a_argument, NULL, 'H'},
  70         {"warning",           a_argument, NULL, 'W'},
  71         {"error",             a_argument, NULL, 'E'},
  72         {"help",             no_argument, NULL, 'h'},
  73         {"version",          no_argument, NULL, 'v'},
  74         {NULL,               no_argument, NULL, 0x0},
  75 };
  76 static const char * const usage_opts_help[] = {
  77         "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all",
  78         "\n\tInput formats are:\n"
  79          "\t\tdts - device tree source text\n"
  80          "\t\tdtb - device tree blob\n"
  81          "\t\tfs  - /proc/device-tree style directory",
  82         "\n\tOutput file",
  83         "\n\tOutput formats are:\n"
  84          "\t\tdts - device tree source text\n"
  85          "\t\tdtb - device tree blob\n"
  86          "\t\tasm - assembler source",
  87         "\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
  88         "\n\tOutput dependency file",
  89         "\n\tMake space for <number> reserve map entries (for dtb and asm output)",
  90         "\n\tMake the blob at least <bytes> long (extra space)",
  91         "\n\tAdd padding to the blob of <bytes> long (extra space)",
  92         "\n\tSet the physical boot cpu",
  93         "\n\tTry to produce output even if the input tree has errors",
  94         "\n\tAdd a path to search for include files",
  95         "\n\tSort nodes and properties before outputting (useful for comparing trees)",
  96         "\n\tValid phandle formats are:\n"
  97          "\t\tlegacy - \"linux,phandle\" properties only\n"
  98          "\t\tepapr  - \"phandle\" properties only\n"
  99          "\t\tboth   - Both \"linux,phandle\" and \"phandle\" properties",
 100         "\n\tEnable/disable warnings (prefix with \"no-\")",
 101         "\n\tEnable/disable errors (prefix with \"no-\")",
 102         "\n\tPrint this help and exit",
 103         "\n\tPrint version and exit",
 104         NULL,
 105 };
 106
 107 int main(int argc, char *argv[])
 108 {
 109         struct boot_info *bi;
 110         const char *inform = "dts";
 111         const char *outform = "dts";
 112         const char *outname = "-";
 113         const char *depname = NULL;
 114         bool force = false, sort = false;
 115         const char *arg;
 116         int opt;
 117         FILE *outf = NULL;
 118         int outversion = DEFAULT_FDT_VERSION;
 119         long long cmdline_boot_cpuid = -1;
 120
 121         quiet      = 0;
 122         reservenum = 0;
 123         minsize    = 0;
 124         padsize    = 0;
 125
 126         while ((opt = util_getopt_long()) != EOF) {
 127                 switch (opt) {
 128                 case 'I':
 129                         inform = optarg;
 130                         break;
 131                 case 'O':
 132                         outform = optarg;
 133                         break;
 134                 case 'o':
 135                         outname = optarg;
 136                         break;
 137                 case 'V':
 138                         outversion = strtol(optarg, NULL, 0);
 139                         break;
 140                 case 'd':
 141                         depname = optarg;
 142                         break;
 143                 case 'R':
 144                         reservenum = strtol(optarg, NULL, 0);
 145                         break;
 146                 case 'S':
 147                         minsize = strtol(optarg, NULL, 0);
 148                         break;
 149                 case 'p':
 150                         padsize = strtol(optarg, NULL, 0);
 151                         break;
 152                 case 'f':
 153                         force = true;
 154                         break;
 155                 case 'q':
 156                         quiet++;
 157                         break;
 158                 case 'b':
 159                         cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
 160                         break;
 161                 case 'i':
 162                         srcfile_add_search_path(optarg);
 163                         break;
 164                 case 'v':
 165                         util_version();
 166                 case 'H':
 167                         if (streq(optarg, "legacy"))
 168                                 phandle_format = PHANDLE_LEGACY;
 169                         else if (streq(optarg, "epapr"))
 170                                 phandle_format = PHANDLE_EPAPR;
 171                         else if (streq(optarg, "both"))
 172                                 phandle_format = PHANDLE_BOTH;
 173                         else
 174                                 die("Invalid argument \"%s\" to -H option\n",
 175                                     optarg);
 176                         break;
 177
 178                 case 's':
 179                         sort = true;
 180                         break;
 181
 182                 case 'W':
 183                         parse_checks_option(true, false, optarg);
 184                         break;
 185
 186                 case 'E':
 187                         parse_checks_option(false, true, optarg);
 188                         break;
 189
 190                 case 'h':
 191                         usage(NULL);
 192                 default:
 193                         usage("unknown option");
 194                 }
 195         }
 196
 197         if (argc > (optind+1))
 198                 usage("missing files");
 199         else if (argc < (optind+1))
 200                 arg = "-";
 201         else
 202                 arg = argv[optind];
 203
 204         /* minsize and padsize are mutually exclusive */
 205         if (minsize && padsize)
 206                 die("Can't set both -p and -S\n");
 207
 208         if (depname) {
 209                 depfile = fopen(depname, "w");
 210                 if (!depfile)
 211                         die("Couldn't open dependency file %s: %s\n", depname,
 212                             strerror(errno));
 213                 fprintf(depfile, "%s:", outname);
 214         }
 215
 216         if (streq(inform, "dts"))
 217                 bi = dt_from_source(arg);
 218         else if (streq(inform, "fs"))
 219                 bi = dt_from_fs(arg);
 220         else if(streq(inform, "dtb"))
 221                 bi = dt_from_blob(arg);
 222         else
 223                 die("Unknown input format \"%s\"\n", inform);
 224
 225         if (depfile) {
 226                 fputc('\n', depfile);
 227                 fclose(depfile);
 228         }
 229
 230         if (cmdline_boot_cpuid != -1)
 231                 bi->boot_cpuid_phys = cmdline_boot_cpuid;
 232
 233         fill_fullpaths(bi->dt, "");
 234         process_checks(force, bi);
 235
 236         if (sort)
 237                 sort_tree(bi);
 238
 239         if (streq(outname, "-")) {
 240                 outf = stdout;
 241         } else {
 242                 outf = fopen(outname, "wb");
 243                 if (! outf)
 244                         die("Couldn't open output file %s: %s\n",
 245                             outname, strerror(errno));
 246         }
 247
 248         if (streq(outform, "dts")) {
 249                 dt_to_source(outf, bi);
 250         } else if (streq(outform, "dtb")) {
 251                 dt_to_blob(outf, bi, outversion);
 252         } else if (streq(outform, "asm")) {
 253                 dt_to_asm(outf, bi, outversion);
 254         } else if (streq(outform, "null")) {
 255                 /* do nothing */
 256         } else {
 257                 die("Unknown output format \"%s\"\n", outform);
 258         }
 259
 260         exit(0);
 261 }