linux/scripts/dtc/dtc.c
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   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 */
  29int quiet;              /* Level of quietness */
  30int reservenum;         /* Number of memory reservation slots */
  31int minsize;            /* Minimum blob size */
  32int padsize;            /* Additional padding to blob */
  33int phandle_format = PHANDLE_BOTH;      /* Use linux,phandle or phandle properties */
  34
  35static 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
  52static 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
 102int 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}
 261
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