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 #include "version_gen.h"
  25
  26 /*
  27  * Command line options
  28  */
  29 int quiet;              /* Level of quietness */
  30 int reservenum;         /* Number of memory reservation slots */
  31 int minsize;            /* Minimum blob size */
  32 int padsize;            /* Additional padding to blob */
  33 int phandle_format = PHANDLE_BOTH;      /* Use linux,phandle or phandle properties */
  34
  35 static void fill_fullpaths(struct node *tree, const char *prefix)
  36 {
  37         struct node *child;
  38         const char *unit;
  39
  40         tree->fullpath = join_path(prefix, tree->name);
  41
  42         unit = strchr(tree->name, '@');
  43         if (unit)
  44                 tree->basenamelen = unit - tree->name;
  45         else
  46                 tree->basenamelen = strlen(tree->name);
  47
  48         for_each_child(tree, child)
  49                 fill_fullpaths(child, tree->fullpath);
  50 }
  51
  52 static void  __attribute__ ((noreturn)) usage(void)
  53 {
  54         fprintf(stderr, "Usage:\n");
  55         fprintf(stderr, "\tdtc [options] <input file>\n");
  56         fprintf(stderr, "\nOptions:\n");
  57         fprintf(stderr, "\t-h\n");
  58         fprintf(stderr, "\t\tThis help text\n");
  59         fprintf(stderr, "\t-q\n");
  60         fprintf(stderr, "\t\tQuiet: -q suppress warnings, -qq errors, -qqq all\n");
  61         fprintf(stderr, "\t-I <input format>\n");
  62         fprintf(stderr, "\t\tInput formats are:\n");
  63         fprintf(stderr, "\t\t\tdts - device tree source text\n");
  64         fprintf(stderr, "\t\t\tdtb - device tree blob\n");
  65         fprintf(stderr, "\t\t\tfs - /proc/device-tree style directory\n");
  66         fprintf(stderr, "\t-o <output file>\n");
  67         fprintf(stderr, "\t-O <output format>\n");
  68         fprintf(stderr, "\t\tOutput formats are:\n");
  69         fprintf(stderr, "\t\t\tdts - device tree source text\n");
  70         fprintf(stderr, "\t\t\tdtb - device tree blob\n");
  71         fprintf(stderr, "\t\t\tasm - assembler source\n");
  72         fprintf(stderr, "\t-V <output version>\n");
  73         fprintf(stderr, "\t\tBlob version to produce, defaults to %d (relevant for dtb\n\t\tand asm output only)\n", DEFAULT_FDT_VERSION);
  74         fprintf(stderr, "\t-d <output dependency file>\n");
  75         fprintf(stderr, "\t-R <number>\n");
  76         fprintf(stderr, "\t\tMake space for <number> reserve map entries (relevant for \n\t\tdtb and asm output only)\n");
  77         fprintf(stderr, "\t-S <bytes>\n");
  78         fprintf(stderr, "\t\tMake the blob at least <bytes> long (extra space)\n");
  79         fprintf(stderr, "\t-p <bytes>\n");
  80         fprintf(stderr, "\t\tAdd padding to the blob of <bytes> long (extra space)\n");
  81         fprintf(stderr, "\t-b <number>\n");
  82         fprintf(stderr, "\t\tSet the physical boot cpu\n");
  83         fprintf(stderr, "\t-f\n");
  84         fprintf(stderr, "\t\tForce - try to produce output even if the input tree has errors\n");
  85         fprintf(stderr, "\t-i\n");
  86         fprintf(stderr, "\t\tAdd a path to search for include files\n");
  87         fprintf(stderr, "\t-s\n");
  88         fprintf(stderr, "\t\tSort nodes and properties before outputting (only useful for\n\t\tcomparing trees)\n");
  89         fprintf(stderr, "\t-v\n");
  90         fprintf(stderr, "\t\tPrint DTC version and exit\n");
  91         fprintf(stderr, "\t-H <phandle format>\n");
  92         fprintf(stderr, "\t\tphandle formats are:\n");
  93         fprintf(stderr, "\t\t\tlegacy - \"linux,phandle\" properties only\n");
  94         fprintf(stderr, "\t\t\tepapr - \"phandle\" properties only\n");
  95         fprintf(stderr, "\t\t\tboth - Both \"linux,phandle\" and \"phandle\" properties\n");
  96         fprintf(stderr, "\t-W [no-]<checkname>\n");
  97         fprintf(stderr, "\t-E [no-]<checkname>\n");
  98         fprintf(stderr, "\t\t\tenable or disable warnings and errors\n");
  99         exit(3);
 100 }
 101
 102 int main(int argc, char *argv[])
 103 {
 104         struct boot_info *bi;
 105         const char *inform = "dts";
 106         const char *outform = "dts";
 107         const char *outname = "-";
 108         const char *depname = NULL;
 109         int force = 0, sort = 0;
 110         const char *arg;
 111         int opt;
 112         FILE *outf = NULL;
 113         int outversion = DEFAULT_FDT_VERSION;
 114         long long cmdline_boot_cpuid = -1;
 115
 116         quiet      = 0;
 117         reservenum = 0;
 118         minsize    = 0;
 119         padsize    = 0;
 120
 121         while ((opt = getopt(argc, argv, "hI:O:o:V:d:R:S:p:fqb:i:vH:sW:E:"))
 122                         != EOF) {
 123                 switch (opt) {
 124                 case 'I':
 125                         inform = optarg;
 126                         break;
 127                 case 'O':
 128                         outform = optarg;
 129                         break;
 130                 case 'o':
 131                         outname = optarg;
 132                         break;
 133                 case 'V':
 134                         outversion = strtol(optarg, NULL, 0);
 135                         break;
 136                 case 'd':
 137                         depname = optarg;
 138                         break;
 139                 case 'R':
 140                         reservenum = strtol(optarg, NULL, 0);
 141                         break;
 142                 case 'S':
 143                         minsize = strtol(optarg, NULL, 0);
 144                         break;
 145                 case 'p':
 146                         padsize = strtol(optarg, NULL, 0);
 147                         break;
 148                 case 'f':
 149                         force = 1;
 150                         break;
 151                 case 'q':
 152                         quiet++;
 153                         break;
 154                 case 'b':
 155                         cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
 156                         break;
 157                 case 'i':
 158                         srcfile_add_search_path(optarg);
 159                         break;
 160                 case 'v':
 161                         printf("Version: %s\n", DTC_VERSION);
 162                         exit(0);
 163                 case 'H':
 164                         if (streq(optarg, "legacy"))
 165                                 phandle_format = PHANDLE_LEGACY;
 166                         else if (streq(optarg, "epapr"))
 167                                 phandle_format = PHANDLE_EPAPR;
 168                         else if (streq(optarg, "both"))
 169                                 phandle_format = PHANDLE_BOTH;
 170                         else
 171                                 die("Invalid argument \"%s\" to -H option\n",
 172                                     optarg);
 173                         break;
 174
 175                 case 's':
 176                         sort = 1;
 177                         break;
 178
 179                 case 'W':
 180                         parse_checks_option(true, false, optarg);
 181                         break;
 182
 183                 case 'E':
 184                         parse_checks_option(false, true, optarg);
 185                         break;
 186
 187                 case 'h':
 188                 default:
 189                         usage();
 190                 }
 191         }
 192
 193         if (argc > (optind+1))
 194                 usage();
 195         else if (argc < (optind+1))
 196                 arg = "-";
 197         else
 198                 arg = argv[optind];
 199
 200         /* minsize and padsize are mutually exclusive */
 201         if (minsize && padsize)
 202                 die("Can't set both -p and -S\n");
 203
 204         if (minsize)
 205                 fprintf(stderr, "DTC: Use of \"-S\" is deprecated; it will be removed soon, use \"-p\" instead\n");
 206
 207         if (depname) {
 208                 depfile = fopen(depname, "w");
 209                 if (!depfile)
 210                         die("Couldn't open dependency file %s: %s\n", depname,
 211                             strerror(errno));
 212                 fprintf(depfile, "%s:", outname);
 213         }
 214
 215         if (streq(inform, "dts"))
 216                 bi = dt_from_source(arg);
 217         else if (streq(inform, "fs"))
 218                 bi = dt_from_fs(arg);
 219         else if(streq(inform, "dtb"))
 220                 bi = dt_from_blob(arg);
 221         else
 222                 die("Unknown input format \"%s\"\n", inform);
 223
 224         if (depfile) {
 225                 fputc('\n', depfile);
 226                 fclose(depfile);
 227         }
 228
 229         if (cmdline_boot_cpuid != -1)
 230                 bi->boot_cpuid_phys = cmdline_boot_cpuid;
 231
 232         fill_fullpaths(bi->dt, "");
 233         process_checks(force, bi);
 234
 235         if (sort)
 236                 sort_tree(bi);
 237
 238         if (streq(outname, "-")) {
 239                 outf = stdout;
 240         } else {
 241                 outf = fopen(outname, "w");
 242                 if (! outf)
 243                         die("Couldn't open output file %s: %s\n",
 244                             outname, strerror(errno));
 245         }
 246
 247         if (streq(outform, "dts")) {
 248                 dt_to_source(outf, bi);
 249         } else if (streq(outform, "dtb")) {
 250                 dt_to_blob(outf, bi, outversion);
 251         } else if (streq(outform, "asm")) {
 252                 dt_to_asm(outf, bi, outversion);
 253         } else if (streq(outform, "null")) {
 254                 /* do nothing */
 255         } else {
 256                 die("Unknown output format \"%s\"\n", outform);
 257         }
 258
 259         exit(0);
 260 }