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
  34 char *join_path(const char *path, const char *name)
  35 {
  36         int lenp = strlen(path);
  37         int lenn = strlen(name);
  38         int len;
  39         int needslash = 1;
  40         char *str;
  41
  42         len = lenp + lenn + 2;
  43         if ((lenp > 0) && (path[lenp-1] == '/')) {
  44                 needslash = 0;
  45                 len--;
  46         }
  47
  48         str = xmalloc(len);
  49         memcpy(str, path, lenp);
  50         if (needslash) {
  51                 str[lenp] = '/';
  52                 lenp++;
  53         }
  54         memcpy(str+lenp, name, lenn+1);
  55         return str;
  56 }
  57
  58 static void fill_fullpaths(struct node *tree, const char *prefix)
  59 {
  60         struct node *child;
  61         const char *unit;
  62
  63         tree->fullpath = join_path(prefix, tree->name);
  64
  65         unit = strchr(tree->name, '@');
  66         if (unit)
  67                 tree->basenamelen = unit - tree->name;
  68         else
  69                 tree->basenamelen = strlen(tree->name);
  70
  71         for_each_child(tree, child)
  72                 fill_fullpaths(child, tree->fullpath);
  73 }
  74
  75 static void  __attribute__ ((noreturn)) usage(void)
  76 {
  77         fprintf(stderr, "Usage:\n");
  78         fprintf(stderr, "\tdtc [options] <input file>\n");
  79         fprintf(stderr, "\nOptions:\n");
  80         fprintf(stderr, "\t-h\n");
  81         fprintf(stderr, "\t\tThis help text\n");
  82         fprintf(stderr, "\t-q\n");
  83         fprintf(stderr, "\t\tQuiet: -q suppress warnings, -qq errors, -qqq all\n");
  84         fprintf(stderr, "\t-I <input format>\n");
  85         fprintf(stderr, "\t\tInput formats are:\n");
  86         fprintf(stderr, "\t\t\tdts - device tree source text\n");
  87         fprintf(stderr, "\t\t\tdtb - device tree blob\n");
  88         fprintf(stderr, "\t\t\tfs - /proc/device-tree style directory\n");
  89         fprintf(stderr, "\t-o <output file>\n");
  90         fprintf(stderr, "\t-O <output format>\n");
  91         fprintf(stderr, "\t\tOutput formats are:\n");
  92         fprintf(stderr, "\t\t\tdts - device tree source text\n");
  93         fprintf(stderr, "\t\t\tdtb - device tree blob\n");
  94         fprintf(stderr, "\t\t\tasm - assembler source\n");
  95         fprintf(stderr, "\t-V <output version>\n");
  96         fprintf(stderr, "\t\tBlob version to produce, defaults to %d (relevant for dtb\n\t\tand asm output only)\n", DEFAULT_FDT_VERSION);
  97         fprintf(stderr, "\t-R <number>\n");
  98         fprintf(stderr, "\t\tMake space for <number> reserve map entries (relevant for \n\t\tdtb and asm output only)\n");
  99         fprintf(stderr, "\t-S <bytes>\n");
 100         fprintf(stderr, "\t\tMake the blob at least <bytes> long (extra space)\n");
 101         fprintf(stderr, "\t-p <bytes>\n");
 102         fprintf(stderr, "\t\tAdd padding to the blob of <bytes> long (extra space)\n");
 103         fprintf(stderr, "\t-b <number>\n");
 104         fprintf(stderr, "\t\tSet the physical boot cpu\n");
 105         fprintf(stderr, "\t-f\n");
 106         fprintf(stderr, "\t\tForce - try to produce output even if the input tree has errors\n");
 107         fprintf(stderr, "\t-v\n");
 108         fprintf(stderr, "\t\tPrint DTC version and exit\n");
 109         exit(3);
 110 }
 111
 112 int main(int argc, char *argv[])
 113 {
 114         struct boot_info *bi;
 115         const char *inform = "dts";
 116         const char *outform = "dts";
 117         const char *outname = "-";
 118         int force = 0, check = 0;
 119         const char *arg;
 120         int opt;
 121         FILE *outf = NULL;
 122         int outversion = DEFAULT_FDT_VERSION;
 123         long long cmdline_boot_cpuid = -1;
 124
 125         quiet      = 0;
 126         reservenum = 0;
 127         minsize    = 0;
 128         padsize    = 0;
 129
 130         while ((opt = getopt(argc, argv, "hI:O:o:V:R:S:p:fcqb:v")) != EOF) {
 131                 switch (opt) {
 132                 case 'I':
 133                         inform = optarg;
 134                         break;
 135                 case 'O':
 136                         outform = optarg;
 137                         break;
 138                 case 'o':
 139                         outname = optarg;
 140                         break;
 141                 case 'V':
 142                         outversion = strtol(optarg, NULL, 0);
 143                         break;
 144                 case 'R':
 145                         reservenum = strtol(optarg, NULL, 0);
 146                         break;
 147                 case 'S':
 148                         minsize = strtol(optarg, NULL, 0);
 149                         break;
 150                 case 'p':
 151                         padsize = strtol(optarg, NULL, 0);
 152                         break;
 153                 case 'f':
 154                         force = 1;
 155                         break;
 156                 case 'c':
 157                         check = 1;
 158                         break;
 159                 case 'q':
 160                         quiet++;
 161                         break;
 162                 case 'b':
 163                         cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
 164                         break;
 165                 case 'v':
 166                         printf("Version: %s\n", DTC_VERSION);
 167                         exit(0);
 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         fprintf(stderr, "DTC: %s->%s  on file \"%s\"\n",
 186                 inform, outform, arg);
 187
 188         if (streq(inform, "dts"))
 189                 bi = dt_from_source(arg);
 190         else if (streq(inform, "fs"))
 191                 bi = dt_from_fs(arg);
 192         else if(streq(inform, "dtb"))
 193                 bi = dt_from_blob(arg);
 194         else
 195                 die("Unknown input format \"%s\"\n", inform);
 196
 197         if (cmdline_boot_cpuid != -1)
 198                 bi->boot_cpuid_phys = cmdline_boot_cpuid;
 199
 200         fill_fullpaths(bi->dt, "");
 201         process_checks(force, bi);
 202
 203
 204         if (streq(outname, "-")) {
 205                 outf = stdout;
 206         } else {
 207                 outf = fopen(outname, "w");
 208                 if (! outf)
 209                         die("Couldn't open output file %s: %s\n",
 210                             outname, strerror(errno));
 211         }
 212
 213         if (streq(outform, "dts")) {
 214                 dt_to_source(outf, bi);
 215         } else if (streq(outform, "dtb")) {
 216                 dt_to_blob(outf, bi, outversion);
 217         } else if (streq(outform, "asm")) {
 218                 dt_to_asm(outf, bi, outversion);
 219         } else if (streq(outform, "null")) {
 220                 /* do nothing */
 221         } else {
 222                 die("Unknown output format \"%s\"\n", outform);
 223         }
 224
 225         exit(0);
 226 }