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-R <number>\n");
  75         fprintf(stderr, "\t\tMake space for <number> reserve map entries (relevant for \n\t\tdtb and asm output only)\n");
  76         fprintf(stderr, "\t-S <bytes>\n");
  77         fprintf(stderr, "\t\tMake the blob at least <bytes> long (extra space)\n");
  78         fprintf(stderr, "\t-p <bytes>\n");
  79         fprintf(stderr, "\t\tAdd padding to the blob of <bytes> long (extra space)\n");
  80         fprintf(stderr, "\t-b <number>\n");
  81         fprintf(stderr, "\t\tSet the physical boot cpu\n");
  82         fprintf(stderr, "\t-f\n");
  83         fprintf(stderr, "\t\tForce - try to produce output even if the input tree has errors\n");
  84         fprintf(stderr, "\t-s\n");
  85         fprintf(stderr, "\t\tSort nodes and properties before outputting (only useful for\n\t\tcomparing trees)\n");
  86         fprintf(stderr, "\t-v\n");
  87         fprintf(stderr, "\t\tPrint DTC version and exit\n");
  88         fprintf(stderr, "\t-H <phandle format>\n");
  89         fprintf(stderr, "\t\tphandle formats are:\n");
  90         fprintf(stderr, "\t\t\tlegacy - \"linux,phandle\" properties only\n");
  91         fprintf(stderr, "\t\t\tepapr - \"phandle\" properties only\n");
  92         fprintf(stderr, "\t\t\tboth - Both \"linux,phandle\" and \"phandle\" properties\n");
  93         exit(3);
  94 }
  95
  96 int main(int argc, char *argv[])
  97 {
  98         struct boot_info *bi;
  99         const char *inform = "dts";
 100         const char *outform = "dts";
 101         const char *outname = "-";
 102         int force = 0, check = 0, sort = 0;
 103         const char *arg;
 104         int opt;
 105         FILE *outf = NULL;
 106         int outversion = DEFAULT_FDT_VERSION;
 107         long long cmdline_boot_cpuid = -1;
 108
 109         quiet      = 0;
 110         reservenum = 0;
 111         minsize    = 0;
 112         padsize    = 0;
 113
 114         while ((opt = getopt(argc, argv, "hI:O:o:V:R:S:p:fcqb:vH:s")) != EOF) {
 115                 switch (opt) {
 116                 case 'I':
 117                         inform = optarg;
 118                         break;
 119                 case 'O':
 120                         outform = optarg;
 121                         break;
 122                 case 'o':
 123                         outname = optarg;
 124                         break;
 125                 case 'V':
 126                         outversion = strtol(optarg, NULL, 0);
 127                         break;
 128                 case 'R':
 129                         reservenum = strtol(optarg, NULL, 0);
 130                         break;
 131                 case 'S':
 132                         minsize = strtol(optarg, NULL, 0);
 133                         break;
 134                 case 'p':
 135                         padsize = strtol(optarg, NULL, 0);
 136                         break;
 137                 case 'f':
 138                         force = 1;
 139                         break;
 140                 case 'c':
 141                         check = 1;
 142                         break;
 143                 case 'q':
 144                         quiet++;
 145                         break;
 146                 case 'b':
 147                         cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
 148                         break;
 149                 case 'v':
 150                         printf("Version: %s\n", DTC_VERSION);
 151                         exit(0);
 152                 case 'H':
 153                         if (streq(optarg, "legacy"))
 154                                 phandle_format = PHANDLE_LEGACY;
 155                         else if (streq(optarg, "epapr"))
 156                                 phandle_format = PHANDLE_EPAPR;
 157                         else if (streq(optarg, "both"))
 158                                 phandle_format = PHANDLE_BOTH;
 159                         else
 160                                 die("Invalid argument \"%s\" to -H option\n",
 161                                     optarg);
 162                         break;
 163
 164                 case 's':
 165                         sort = 1;
 166                         break;
 167
 168                 case 'h':
 169                 default:
 170                         usage();
 171                 }
 172         }
 173
 174         if (argc > (optind+1))
 175                 usage();
 176         else if (argc < (optind+1))
 177                 arg = "-";
 178         else
 179                 arg = argv[optind];
 180
 181         /* minsize and padsize are mutually exclusive */
 182         if (minsize && padsize)
 183                 die("Can't set both -p and -S\n");
 184
 185         if (minsize)
 186                 fprintf(stderr, "DTC: Use of \"-S\" is deprecated; it will be removed soon, use \"-p\" instead\n");
 187
 188         fprintf(stderr, "DTC: %s->%s  on file \"%s\"\n",
 189                 inform, outform, arg);
 190
 191         if (streq(inform, "dts"))
 192                 bi = dt_from_source(arg);
 193         else if (streq(inform, "fs"))
 194                 bi = dt_from_fs(arg);
 195         else if(streq(inform, "dtb"))
 196                 bi = dt_from_blob(arg);
 197         else
 198                 die("Unknown input format \"%s\"\n", inform);
 199
 200         if (cmdline_boot_cpuid != -1)
 201                 bi->boot_cpuid_phys = cmdline_boot_cpuid;
 202
 203         fill_fullpaths(bi->dt, "");
 204         process_checks(force, bi);
 205
 206         if (sort)
 207                 sort_tree(bi);
 208
 209         if (streq(outname, "-")) {
 210                 outf = stdout;
 211         } else {
 212                 outf = fopen(outname, "w");
 213                 if (! outf)
 214                         die("Couldn't open output file %s: %s\n",
 215                             outname, strerror(errno));
 216         }
 217
 218         if (streq(outform, "dts")) {
 219                 dt_to_source(outf, bi);
 220         } else if (streq(outform, "dtb")) {
 221                 dt_to_blob(outf, bi, outversion);
 222         } else if (streq(outform, "asm")) {
 223                 dt_to_asm(outf, bi, outversion);
 224         } else if (streq(outform, "null")) {
 225                 /* do nothing */
 226         } else {
 227                 die("Unknown output format \"%s\"\n", outform);
 228         }
 229
 230         exit(0);
 231 }