tools/firmware-utils/src/addpattern.c

   1 /*
   2  * Copyright (C) 2004  Manuel Novoa III  <mjn3@codepoet.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  17  */
  18
  19 /* July 29, 2004
  20  *
  21  * This is a hacked replacement for the 'addpattern' utility used to
  22  * create wrt54g .bin firmware files.  It isn't pretty, but it does
  23  * the job for me.
  24  *
  25  * Extensions:
  26  *  -v allows setting the version string on the command line.
  27  *  -{0|1} sets the (currently ignored) hw_ver flag in the header
  28  *      to 0 or 1 respectively.
  29  */
  30
  31 /* January 12, 2005
  32  *
  33  * Modified by rodent at rodent dot za dot net
  34  * Support added for the new WRT54G v2.2 and WRT54GS v1.1 "flags"
  35  * Without the flags set to 0x7, the above units will refuse to flash.
  36  *
  37  * Extensions:
  38  *  -{0|1|2} sets {0|1} sets hw_ver flag to 0/1. {2} sets hw_ver to 1
  39  *     and adds the new hardware "flags" for the v2.2/v1.1 units
  40 */
  41
  42 /* January 1, 2007
  43  *
  44  * Modified by juan.i.gonzalez at subdown dot net
  45  * Support added for the AG241v2  and similar
  46  *
  47  * Extensions:
  48  *  -r #.# adds revision hardware flags. AG241v2 and similar.
  49  *
  50  * AG241V2 firmware sets the hw_ver to 0x44.
  51  *
  52  * Example: -r 2.0
  53  *
  54  * Convert 2.0 to 20 to be an integer, and add 0x30 to skip special ASCII
  55  * #define HW_Version ((HW_REV * 10) + 0x30)  -> from cyutils.h
  56 */
  57
  58 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include <string.h>
  61 #include <time.h>
  62 #include <unistd.h>
  63 #include <sys/stat.h>
  64
  65 /**********************************************************************/
  66
  67 #define CODE_ID         "U2ND"          /* from code_pattern.h */
  68 #define CODE_PATTERN   "W54S"   /* from code_pattern.h */
  69 #define PBOT_PATTERN   "PBOT"
  70
  71 #define CYBERTAN_VERSION        "v3.37.2" /* from cyutils.h */
  72
  73 /* WRT54G v2.2 and WRT54GS v1.1 "flags" (from 3.37.32 firmware cyutils.h) */
  74 #define SUPPORT_4712_CHIP      0x0001
  75 #define SUPPORT_INTEL_FLASH    0x0002
  76 #define SUPPORT_5325E_SWITCH   0x0004
  77
  78 struct code_header {                    /* from cyutils.h */
  79         char magic[4];
  80         char res1[4];                           /* for extra magic */
  81         char fwdate[3];
  82         char fwvern[3];
  83         char id[4];                                     /* U2ND */
  84         char hw_ver;                            /* 0: for 4702, 1: for 4712 -- new in 2.04.3 */
  85         char unused;
  86         unsigned char flags[2];       /* SUPPORT_ flags new for 3.37.2 (WRT54G v2.2 and WRT54GS v1.1) */
  87         unsigned char res2[10];
  88 } ;
  89
  90 /**********************************************************************/
  91
  92 void usage(void) __attribute__ (( __noreturn__ ));
  93
  94 void usage(void)
  95 {
  96         fprintf(stderr, "Usage: addpattern [-i trxfile] [-o binfile] [-p pattern] [-g] [-b] [-v v#.#.#] [-r #.#] [-{0|1|2|4}] -h\n");
  97         exit(EXIT_FAILURE);
  98 }
  99
 100 int main(int argc, char **argv)
 101 {
 102         char buf[1024]; /* keep this at 1k or adjust garbage calc below */
 103         struct code_header *hdr;
 104         FILE *in = stdin;
 105         FILE *out = stdout;
 106         char *ifn = NULL;
 107         char *ofn = NULL;
 108         char *pattern = CODE_PATTERN;
 109         char *pbotpat = PBOT_PATTERN;
 110         char *version = CYBERTAN_VERSION;
 111         int gflag = 0;
 112         int pbotflag = 0;
 113         int c;
 114         int v0, v1, v2;
 115         size_t off, n;
 116         time_t t;
 117         struct tm *ptm;
 118
 119         fprintf(stderr, "mjn3's addpattern replacement - v0.81\n");
 120
 121         hdr = (struct code_header *) buf;
 122         memset(hdr, 0, sizeof(struct code_header));
 123
 124         while ((c = getopt(argc, argv, "i:o:p:gbv:0124hr:")) != -1) {
 125                 switch (c) {
 126                         case 'i':
 127                                 ifn = optarg;
 128                                 break;
 129                         case 'o':
 130                                 ofn = optarg;
 131                                 break;
 132                         case 'p':
 133                                 pattern = optarg;
 134                                 break;
 135                         case 'g':
 136                                 gflag = 1;
 137                                 break;
 138                         case 'b':
 139                                 pbotflag = 1;
 140                                 break;
 141                         case 'v':                       /* extension to allow setting version */
 142                                 version = optarg;
 143                                 break;
 144                         case '0':
 145                                 hdr->hw_ver = 0;
 146                                 break;
 147                         case '1':
 148                                 hdr->hw_ver = 1;
 149                                 break;
 150                         case '2':                       /* new 54G v2.2 and 54GS v1.1 flags */
 151                                 hdr->hw_ver = 1;
 152                                 hdr->flags[0] |= SUPPORT_4712_CHIP;
 153                                 hdr->flags[0] |= SUPPORT_INTEL_FLASH;
 154                                 hdr->flags[0] |= SUPPORT_5325E_SWITCH;
 155                                 break;
 156                         case '4':
 157                                 /* V4 firmware sets the flags to 0x1f */
 158                                 hdr->hw_ver = 0;
 159                                 hdr->flags[0] = 0x1f;
 160                                 break;
 161                         case 'r':
 162                                 hdr->hw_ver = (char)(atof(optarg)*10)+0x30;
 163                                 break;
 164
 165                         case 'h':
 166                         default:
 167                                 usage();
 168                 }
 169         }
 170
 171         if (optind != argc || optind == 1) {
 172                 fprintf(stderr, "illegal arg \"%s\"\n", argv[optind]);
 173                 usage();
 174         }
 175
 176         if (strlen(pattern) != 4) {
 177                 fprintf(stderr, "illegal pattern \"%s\": length != 4\n", pattern);
 178                 usage();
 179         }
 180
 181         if (ifn && !(in = fopen(ifn, "r"))) {
 182                 fprintf(stderr, "can not open \"%s\" for reading\n", ifn);
 183                 usage();
 184         }
 185
 186         if (ofn && !(out = fopen(ofn, "w"))) {
 187                 fprintf(stderr, "can not open \"%s\" for writing\n", ofn);
 188                 usage();
 189         }
 190
 191         if (time(&t) == (time_t)(-1)) {
 192                 fprintf(stderr, "time call failed\n");
 193                 return EXIT_FAILURE;
 194         }
 195
 196         ptm = localtime(&t);
 197
 198         if (3 != sscanf(version, "v%d.%d.%d", &v0, &v1, &v2)) {
 199                 fprintf(stderr, "bad version string \"%s\"\n", version);
 200                 return EXIT_FAILURE;
 201         }
 202
 203         memcpy(&hdr->magic, pattern, 4);
 204         if (pbotflag)
 205                 memcpy(&hdr->res1, pbotpat, 4);
 206         hdr->fwdate[0] = ptm->tm_year % 100;
 207         hdr->fwdate[1] = ptm->tm_mon + 1;
 208         hdr->fwdate[2] = ptm->tm_mday;
 209         hdr->fwvern[0] = v0;
 210         hdr->fwvern[1] = v1;
 211         hdr->fwvern[2] = v2;
 212         memcpy(&hdr->id, CODE_ID, strlen(CODE_ID));
 213
 214         off = sizeof(struct code_header);
 215
 216         fprintf(stderr, "writing firmware v%d.%d.%d on %d/%d/%d (y/m/d)\n",
 217                         v0, v1, v2,
 218                         hdr->fwdate[0], hdr->fwdate[1], hdr->fwdate[2]);
 219
 220
 221         while ((n = fread(buf + off, 1, sizeof(buf)-off, in) + off) > 0) {
 222                 off = 0;
 223                 if (n < sizeof(buf)) {
 224                         if (ferror(in)) {
 225                         FREAD_ERROR:
 226                                 fprintf(stderr, "fread error\n");
 227                                 return EXIT_FAILURE;
 228                         }
 229                         if (gflag) {
 230                                 gflag = sizeof(buf) - n;
 231                                 memset(buf + n, 0xff, gflag);
 232                                 fprintf(stderr, "adding %d bytes of garbage\n", gflag);
 233                                 n = sizeof(buf);
 234                         }
 235                 }
 236                 if (!fwrite(buf, n, 1, out)) {
 237                 FWRITE_ERROR:
 238                         fprintf(stderr, "fwrite error\n");
 239                         return EXIT_FAILURE;
 240                 }
 241         }
 242
 243         if (ferror(in)) {
 244                 goto FREAD_ERROR;
 245         }
 246
 247         if (fflush(out)) {
 248                 goto FWRITE_ERROR;
 249         }
 250
 251         fclose(in);
 252         fclose(out);
 253
 254         return EXIT_SUCCESS;
 255 }