dtc.c revision 204488
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 35char *join_path(const char *path, const char *name) 36{ 37 int lenp = strlen(path); 38 int lenn = strlen(name); 39 int len; 40 int needslash = 1; 41 char *str; 42 43 len = lenp + lenn + 2; 44 if ((lenp > 0) && (path[lenp-1] == '/')) { 45 needslash = 0; 46 len--; 47 } 48 49 str = xmalloc(len); 50 memcpy(str, path, lenp); 51 if (needslash) { 52 str[lenp] = '/'; 53 lenp++; 54 } 55 memcpy(str+lenp, name, lenn+1); 56 return str; 57} 58 59static void fill_fullpaths(struct node *tree, const char *prefix) 60{ 61 struct node *child; 62 const char *unit; 63 64 tree->fullpath = join_path(prefix, tree->name); 65 66 unit = strchr(tree->name, '@'); 67 if (unit) 68 tree->basenamelen = unit - tree->name; 69 else 70 tree->basenamelen = strlen(tree->name); 71 72 for_each_child(tree, child) 73 fill_fullpaths(child, tree->fullpath); 74} 75 76static void __attribute__ ((noreturn)) usage(void) 77{ 78 fprintf(stderr, "Usage:\n"); 79 fprintf(stderr, "\tdtc [options] <input file>\n"); 80 fprintf(stderr, "\nOptions:\n"); 81 fprintf(stderr, "\t-h\n"); 82 fprintf(stderr, "\t\tThis help text\n"); 83 fprintf(stderr, "\t-q\n"); 84 fprintf(stderr, "\t\tQuiet: -q suppress warnings, -qq errors, -qqq all\n"); 85 fprintf(stderr, "\t-I <input format>\n"); 86 fprintf(stderr, "\t\tInput formats are:\n"); 87 fprintf(stderr, "\t\t\tdts - device tree source text\n"); 88 fprintf(stderr, "\t\t\tdtb - device tree blob\n"); 89 fprintf(stderr, "\t\t\tfs - /proc/device-tree style directory\n"); 90 fprintf(stderr, "\t-o <output file>\n"); 91 fprintf(stderr, "\t-O <output format>\n"); 92 fprintf(stderr, "\t\tOutput formats are:\n"); 93 fprintf(stderr, "\t\t\tdts - device tree source text\n"); 94 fprintf(stderr, "\t\t\tdtb - device tree blob\n"); 95 fprintf(stderr, "\t\t\tasm - assembler source\n"); 96 fprintf(stderr, "\t-V <output version>\n"); 97 fprintf(stderr, "\t\tBlob version to produce, defaults to %d (relevant for dtb\n\t\tand asm output only)\n", DEFAULT_FDT_VERSION); 98 fprintf(stderr, "\t-R <number>\n"); 99 fprintf(stderr, "\t\tMake space for <number> reserve map entries (relevant for \n\t\tdtb and asm output only)\n"); 100 fprintf(stderr, "\t-S <bytes>\n"); 101 fprintf(stderr, "\t\tMake the blob at least <bytes> long (extra space)\n"); 102 fprintf(stderr, "\t-p <bytes>\n"); 103 fprintf(stderr, "\t\tAdd padding to the blob of <bytes> long (extra space)\n"); 104 fprintf(stderr, "\t-b <number>\n"); 105 fprintf(stderr, "\t\tSet the physical boot cpu\n"); 106 fprintf(stderr, "\t-f\n"); 107 fprintf(stderr, "\t\tForce - try to produce output even if the input tree has errors\n"); 108 fprintf(stderr, "\t-v\n"); 109 fprintf(stderr, "\t\tPrint DTC version and exit\n"); 110 fprintf(stderr, "\t-H <phandle format>\n"); 111 fprintf(stderr, "\t\tphandle formats are:\n"); 112 fprintf(stderr, "\t\t\tlegacy - \"linux,phandle\" properties only\n"); 113 fprintf(stderr, "\t\t\tepapr - \"phandle\" properties only\n"); 114 fprintf(stderr, "\t\t\tboth - Both \"linux,phandle\" and \"phandle\" properties\n"); 115 exit(3); 116} 117 118int main(int argc, char *argv[]) 119{ 120 struct boot_info *bi; 121 const char *inform = "dts"; 122 const char *outform = "dts"; 123 const char *outname = "-"; 124 int force = 0, check = 0; 125 const char *arg; 126 int opt; 127 FILE *outf = NULL; 128 int outversion = DEFAULT_FDT_VERSION; 129 long long cmdline_boot_cpuid = -1; 130 131 quiet = 0; 132 reservenum = 0; 133 minsize = 0; 134 padsize = 0; 135 136 while ((opt = getopt(argc, argv, "hI:O:o:V:R:S:p:fcqb:vH:")) != EOF) { 137 switch (opt) { 138 case 'I': 139 inform = optarg; 140 break; 141 case 'O': 142 outform = optarg; 143 break; 144 case 'o': 145 outname = optarg; 146 break; 147 case 'V': 148 outversion = strtol(optarg, NULL, 0); 149 break; 150 case 'R': 151 reservenum = strtol(optarg, NULL, 0); 152 break; 153 case 'S': 154 minsize = strtol(optarg, NULL, 0); 155 break; 156 case 'p': 157 padsize = strtol(optarg, NULL, 0); 158 break; 159 case 'f': 160 force = 1; 161 break; 162 case 'c': 163 check = 1; 164 break; 165 case 'q': 166 quiet++; 167 break; 168 case 'b': 169 cmdline_boot_cpuid = strtoll(optarg, NULL, 0); 170 break; 171 case 'v': 172 printf("Version: %s\n", DTC_VERSION); 173 exit(0); 174 case 'H': 175 if (streq(optarg, "legacy")) 176 phandle_format = PHANDLE_LEGACY; 177 else if (streq(optarg, "epapr")) 178 phandle_format = PHANDLE_EPAPR; 179 else if (streq(optarg, "both")) 180 phandle_format = PHANDLE_BOTH; 181 else 182 die("Invalid argument \"%s\" to -H option\n", 183 optarg); 184 break; 185 186 case 'h': 187 default: 188 usage(); 189 } 190 } 191 192 if (argc > (optind+1)) 193 usage(); 194 else if (argc < (optind+1)) 195 arg = "-"; 196 else 197 arg = argv[optind]; 198 199 /* minsize and padsize are mutually exclusive */ 200 if (minsize && padsize) 201 die("Can't set both -p and -S\n"); 202 203 if (minsize) 204 fprintf(stderr, "DTC: Use of \"-S\" is deprecated; it will be removed soon, use \"-p\" instead\n"); 205 206 fprintf(stderr, "DTC: %s->%s on file \"%s\"\n", 207 inform, outform, arg); 208 209 if (streq(inform, "dts")) 210 bi = dt_from_source(arg); 211 else if (streq(inform, "fs")) 212 bi = dt_from_fs(arg); 213 else if(streq(inform, "dtb")) 214 bi = dt_from_blob(arg); 215 else 216 die("Unknown input format \"%s\"\n", inform); 217 218 if (cmdline_boot_cpuid != -1) 219 bi->boot_cpuid_phys = cmdline_boot_cpuid; 220 221 fill_fullpaths(bi->dt, ""); 222 process_checks(force, bi); 223 224 225 if (streq(outname, "-")) { 226 outf = stdout; 227 } else { 228 outf = fopen(outname, "w"); 229 if (! outf) 230 die("Couldn't open output file %s: %s\n", 231 outname, strerror(errno)); 232 } 233 234 if (streq(outform, "dts")) { 235 dt_to_source(outf, bi); 236 } else if (streq(outform, "dtb")) { 237 dt_to_blob(outf, bi, outversion); 238 } else if (streq(outform, "asm")) { 239 dt_to_asm(outf, bi, outversion); 240 } else if (streq(outform, "null")) { 241 /* do nothing */ 242 } else { 243 die("Unknown output format \"%s\"\n", outform); 244 } 245 246 exit(0); 247} 248