dtc.c revision 204431
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 */ 33 34char *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 58static 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 75static 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 112int 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} 227