board/esd/common/auto_update.c

   1 /*
   2  * (C) Copyright 2003-2004
   3  * Gary Jennejohn, DENX Software Engineering, gj@denx.de.
   4  * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  */
  24
  25 #include <common.h>
  26
  27 #include <command.h>
  28 #include <image.h>
  29 #include <asm/byteorder.h>
  30 #if defined(CFG_NAND_LEGACY)
  31 #include <linux/mtd/nand_legacy.h>
  32 #endif
  33 #include <fat.h>
  34 #include <part.h>
  35
  36 #include "auto_update.h"
  37
  38 #ifdef CONFIG_AUTO_UPDATE
  39
  40 #if !defined(CONFIG_CMD_FAT)
  41 #error "must define CONFIG_CMD_FAT"
  42 #endif
  43
  44 extern au_image_t au_image[];
  45 extern int N_AU_IMAGES;
  46
  47 #define AU_DEBUG
  48 #undef AU_DEBUG
  49
  50 #undef debug
  51 #ifdef  AU_DEBUG
  52 #define debug(fmt,args...)      printf (fmt ,##args)
  53 #else
  54 #define debug(fmt,args...)
  55 #endif  /* AU_DEBUG */
  56
  57
  58 #define LOAD_ADDR ((unsigned char *)0x100000)   /* where to load files into memory */
  59 #define MAX_LOADSZ 0x1e00000
  60
  61 /* externals */
  62 extern int fat_register_device(block_dev_desc_t *, int);
  63 extern int file_fat_detectfs(void);
  64 extern long file_fat_read(const char *, void *, unsigned long);
  65 long do_fat_read (const char *filename, void *buffer, unsigned long maxsize, int dols);
  66 #ifdef CONFIG_VFD
  67 extern int trab_vfd (ulong);
  68 extern int transfer_pic(unsigned char, unsigned char *, int, int);
  69 #endif
  70 extern int flash_sect_erase(ulong, ulong);
  71 extern int flash_sect_protect (int, ulong, ulong);
  72 extern int flash_write (char *, ulong, ulong);
  73
  74 #if defined(CONFIG_CMD_NAND) && defined(CFG_NAND_LEGACY)
  75 /* references to names in cmd_nand.c */
  76 #define NANDRW_READ     0x01
  77 #define NANDRW_WRITE    0x00
  78 #define NANDRW_JFFS2    0x02
  79 #define NANDRW_JFFS2_SKIP       0x04
  80 extern struct nand_chip nand_dev_desc[];
  81 extern int nand_legacy_rw(struct nand_chip* nand, int cmd, size_t start, size_t len,
  82                    size_t * retlen, u_char * buf);
  83 extern int nand_legacy_erase(struct nand_chip* nand, size_t ofs, size_t len, int clean);
  84 #endif
  85
  86 extern block_dev_desc_t ide_dev_desc[CFG_IDE_MAXDEVICE];
  87
  88
  89 int au_check_cksum_valid(int i, long nbytes)
  90 {
  91         image_header_t *hdr;
  92
  93         hdr = (image_header_t *)LOAD_ADDR;
  94
  95         if ((au_image[i].type == AU_FIRMWARE) &&
  96             (au_image[i].size != image_get_data_size (hdr))) {
  97                 printf ("Image %s has wrong size\n", au_image[i].name);
  98                 return -1;
  99         }
 100
 101         if (nbytes != (image_get_image_size (hdr))) {
 102                 printf ("Image %s bad total SIZE\n", au_image[i].name);
 103                 return -1;
 104         }
 105
 106         /* check the data CRC */
 107         if (!image_check_dcrc (hdr)) {
 108                 printf ("Image %s bad data checksum\n", au_image[i].name);
 109                 return -1;
 110         }
 111         return 0;
 112 }
 113
 114
 115 int au_check_header_valid(int i, long nbytes)
 116 {
 117         image_header_t *hdr;
 118         unsigned long checksum;
 119
 120         hdr = (image_header_t *)LOAD_ADDR;
 121         /* check the easy ones first */
 122 #undef CHECK_VALID_DEBUG
 123 #ifdef CHECK_VALID_DEBUG
 124         printf("magic %#x %#x ", image_get_magic (hdr), IH_MAGIC);
 125         printf("arch %#x %#x ", image_get_arch (hdr), IH_ARCH_PPC);
 126         printf("size %#x %#lx ", image_get_data_size (hdr), nbytes);
 127         printf("type %#x %#x ", image_get_type (hdr), IH_TYPE_KERNEL);
 128 #endif
 129         if (nbytes < image_get_header_size ())
 130         {
 131                 printf ("Image %s bad header SIZE\n", au_image[i].name);
 132                 return -1;
 133         }
 134         if (!image_check_magic (hdr) || !image_check_arch (hdr, IH_ARCH_PPC))
 135         {
 136                 printf ("Image %s bad MAGIC or ARCH\n", au_image[i].name);
 137                 return -1;
 138         }
 139         if (!image_check_hcrc (hdr)) {
 140                 printf ("Image %s bad header checksum\n", au_image[i].name);
 141                 return -1;
 142         }
 143
 144         /* check the type - could do this all in one gigantic if() */
 145         if ((au_image[i].type == AU_FIRMWARE) && !image_check_type (hdr, IH_TYPE_FIRMWARE)) {
 146                 printf ("Image %s wrong type\n", au_image[i].name);
 147                 return -1;
 148         }
 149         if ((au_image[i].type == AU_SCRIPT) && !image_check_type (hdr, IH_TYPE_SCRIPT)) {
 150                 printf ("Image %s wrong type\n", au_image[i].name);
 151                 return -1;
 152         }
 153
 154         /* recycle checksum */
 155         checksum = image_get_data_size (hdr);
 156
 157 #if 0 /* test-only */
 158         /* for kernel and app the image header must also fit into flash */
 159         if (idx != IDX_DISK)
 160                 checksum += image_get_header_size ();
 161         /* check the size does not exceed space in flash. HUSH scripts */
 162         /* all have ausize[] set to 0 */
 163         if ((ausize[idx] != 0) && (ausize[idx] < checksum)) {
 164                 printf ("Image %s is bigger than FLASH\n", au_image[i].name);
 165                 return -1;
 166         }
 167 #endif
 168
 169         return 0;
 170 }
 171
 172
 173 int au_do_update(int i, long sz)
 174 {
 175         image_header_t *hdr;
 176         char *addr;
 177         long start, end;
 178         int off, rc;
 179         uint nbytes;
 180         int k;
 181 #if defined(CONFIG_CMD_NAND) && defined(CFG_NAND_LEGACY)
 182         int total;
 183 #endif
 184
 185         hdr = (image_header_t *)LOAD_ADDR;
 186
 187         switch (au_image[i].type) {
 188         case AU_SCRIPT:
 189                 printf("Executing script %s\n", au_image[i].name);
 190
 191                 /* execute a script */
 192                 if (image_check_type (hdr, IH_TYPE_SCRIPT)) {
 193                         addr = (char *)((char *)hdr + image_get_header_size ());
 194                         /* stick a NULL at the end of the script, otherwise */
 195                         /* parse_string_outer() runs off the end. */
 196                         addr[image_get_data_size (hdr)] = 0;
 197                         addr += 8;
 198
 199                         /*
 200                          * Replace cr/lf with ;
 201                          */
 202                         k = 0;
 203                         while (addr[k] != 0) {
 204                                 if ((addr[k] == 10) || (addr[k] == 13)) {
 205                                         addr[k] = ';';
 206                                 }
 207                                 k++;
 208                         }
 209
 210                         run_command(addr, 0);
 211                         return 0;
 212                 }
 213
 214                 break;
 215
 216         case AU_FIRMWARE:
 217         case AU_NOR:
 218         case AU_NAND:
 219                 start = au_image[i].start;
 220                 end = au_image[i].start + au_image[i].size - 1;
 221
 222                 /*
 223                  * do not update firmware when image is already in flash.
 224                  */
 225                 if (au_image[i].type == AU_FIRMWARE) {
 226                         char *orig = (char*)start;
 227                         char *new  = (char *)((char *)hdr + image_get_header_size ());
 228                         nbytes = image_get_data_size (hdr);
 229
 230                         while(--nbytes) {
 231                                 if (*orig++ != *new++) {
 232                                         break;
 233                                 }
 234                         }
 235                         if (!nbytes) {
 236                                 printf("Skipping firmware update - images are identical\n");
 237                                 break;
 238                         }
 239                 }
 240
 241                 /* unprotect the address range */
 242                 /* this assumes that ONLY the firmware is protected! */
 243                 if (au_image[i].type == AU_FIRMWARE) {
 244                         flash_sect_protect(0, start, end);
 245                 }
 246
 247                 /*
 248                  * erase the address range.
 249                  */
 250                 if (au_image[i].type != AU_NAND) {
 251                         printf("Updating NOR FLASH with image %s\n", au_image[i].name);
 252                         debug ("flash_sect_erase(%lx, %lx);\n", start, end);
 253                         flash_sect_erase(start, end);
 254                 } else {
 255 #if defined(CONFIG_CMD_NAND) && defined(CFG_NAND_LEGACY)
 256                         printf("Updating NAND FLASH with image %s\n", au_image[i].name);
 257                         debug ("nand_legacy_erase(%lx, %lx);\n", start, end);
 258                         rc = nand_legacy_erase (nand_dev_desc, start, end - start + 1, 0);
 259                         debug ("nand_legacy_erase returned %x\n", rc);
 260 #endif
 261                 }
 262
 263                 udelay(10000);
 264
 265                 /* strip the header - except for the kernel and ramdisk */
 266                 if (au_image[i].type != AU_FIRMWARE) {
 267                         addr = (char *)hdr;
 268                         off = image_get_header_size ();
 269                         nbytes = image_get_image_size (hdr);
 270                 } else {
 271                         addr = (char *)((char *)hdr + image_get_header_size ());
 272                         off = 0;
 273                         nbytes = image_get_data_size (hdr);
 274                 }
 275
 276                 /*
 277                  * copy the data from RAM to FLASH
 278                  */
 279                 if (au_image[i].type != AU_NAND) {
 280                         debug ("flash_write(%p, %lx %x)\n", addr, start, nbytes);
 281                         rc = flash_write((char *)addr, start, nbytes);
 282                 } else {
 283 #if defined(CONFIG_CMD_NAND) && defined(CFG_NAND_LEGACY)
 284                         debug ("nand_legacy_rw(%p, %lx %x)\n", addr, start, nbytes);
 285                         rc = nand_legacy_rw(nand_dev_desc, NANDRW_WRITE | NANDRW_JFFS2,
 286                                      start, nbytes, (size_t *)&total, (uchar *)addr);
 287                         debug ("nand_legacy_rw: ret=%x total=%d nbytes=%d\n", rc, total, nbytes);
 288 #else
 289                         rc = -1;
 290 #endif
 291                 }
 292                 if (rc != 0) {
 293                         printf("Flashing failed due to error %d\n", rc);
 294                         return -1;
 295                 }
 296
 297                 /*
 298                  * check the dcrc of the copy
 299                  */
 300                 if (au_image[i].type != AU_NAND) {
 301                         rc = crc32 (0, (uchar *)(start + off), image_get_data_size (hdr));
 302                 } else {
 303 #if defined(CONFIG_CMD_NAND) && defined(CFG_NAND_LEGACY)
 304                         rc = nand_legacy_rw(nand_dev_desc, NANDRW_READ | NANDRW_JFFS2 | NANDRW_JFFS2_SKIP,
 305                                      start, nbytes, (size_t *)&total, (uchar *)addr);
 306                         rc = crc32 (0, (uchar *)(addr + off), image_get_data_size (hdr));
 307 #endif
 308                 }
 309                 if (rc != image_get_dcrc (hdr)) {
 310                         printf ("Image %s Bad Data Checksum After COPY\n", au_image[i].name);
 311                         return -1;
 312                 }
 313
 314                 /* protect the address range */
 315                 /* this assumes that ONLY the firmware is protected! */
 316                 if (au_image[i].type == AU_FIRMWARE) {
 317                         flash_sect_protect(1, start, end);
 318                 }
 319
 320                 break;
 321
 322         default:
 323                 printf("Wrong image type selected!\n");
 324         }
 325
 326         return 0;
 327 }
 328
 329
 330 static void process_macros (const char *input, char *output)
 331 {
 332         char c, prev;
 333         const char *varname_start = NULL;
 334         int inputcnt  = strlen (input);
 335         int outputcnt = CFG_CBSIZE;
 336         int state = 0;  /* 0 = waiting for '$'  */
 337                         /* 1 = waiting for '(' or '{' */
 338                         /* 2 = waiting for ')' or '}' */
 339                         /* 3 = waiting for '''  */
 340 #ifdef DEBUG_PARSER
 341         char *output_start = output;
 342
 343         printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input);
 344 #endif
 345
 346         prev = '\0';                    /* previous character   */
 347
 348         while (inputcnt && outputcnt) {
 349             c = *input++;
 350             inputcnt--;
 351
 352             if (state!=3) {
 353             /* remove one level of escape characters */
 354             if ((c == '\\') && (prev != '\\')) {
 355                 if (inputcnt-- == 0)
 356                         break;
 357                 prev = c;
 358                 c = *input++;
 359             }
 360             }
 361
 362             switch (state) {
 363             case 0:                     /* Waiting for (unescaped) $    */
 364                 if ((c == '\'') && (prev != '\\')) {
 365                         state = 3;
 366                         break;
 367                 }
 368                 if ((c == '$') && (prev != '\\')) {
 369                         state++;
 370                 } else {
 371                         *(output++) = c;
 372                         outputcnt--;
 373                 }
 374                 break;
 375             case 1:                     /* Waiting for (        */
 376                 if (c == '(' || c == '{') {
 377                         state++;
 378                         varname_start = input;
 379                 } else {
 380                         state = 0;
 381                         *(output++) = '$';
 382                         outputcnt--;
 383
 384                         if (outputcnt) {
 385                                 *(output++) = c;
 386                                 outputcnt--;
 387                         }
 388                 }
 389                 break;
 390             case 2:                     /* Waiting for )        */
 391                 if (c == ')' || c == '}') {
 392                         int i;
 393                         char envname[CFG_CBSIZE], *envval;
 394                         int envcnt = input-varname_start-1; /* Varname # of chars */
 395
 396                         /* Get the varname */
 397                         for (i = 0; i < envcnt; i++) {
 398                                 envname[i] = varname_start[i];
 399                         }
 400                         envname[i] = 0;
 401
 402                         /* Get its value */
 403                         envval = getenv (envname);
 404
 405                         /* Copy into the line if it exists */
 406                         if (envval != NULL)
 407                                 while ((*envval) && outputcnt) {
 408                                         *(output++) = *(envval++);
 409                                         outputcnt--;
 410                                 }
 411                         /* Look for another '$' */
 412                         state = 0;
 413                 }
 414                 break;
 415             case 3:                     /* Waiting for '        */
 416                 if ((c == '\'') && (prev != '\\')) {
 417                         state = 0;
 418                 } else {
 419                         *(output++) = c;
 420                         outputcnt--;
 421                 }
 422                 break;
 423             }
 424             prev = c;
 425         }
 426
 427         if (outputcnt)
 428                 *output = 0;
 429
 430 #ifdef DEBUG_PARSER
 431         printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
 432                 strlen(output_start), output_start);
 433 #endif
 434 }
 435
 436
 437 /*
 438  * this is called from board_init() after the hardware has been set up
 439  * and is usable. That seems like a good time to do this.
 440  * Right now the return value is ignored.
 441  */
 442 int do_auto_update(void)
 443 {
 444         block_dev_desc_t *stor_dev;
 445         long sz;
 446         int i, res, cnt, old_ctrlc, got_ctrlc;
 447         char buffer[32];
 448         char str[80];
 449
 450         /*
 451          * Check whether a CompactFlash is inserted
 452          */
 453         if (ide_dev_desc[0].type == DEV_TYPE_UNKNOWN) {
 454                 return -1;       /* no disk detected! */
 455         }
 456
 457         /* check whether it has a partition table */
 458         stor_dev = get_dev("ide", 0);
 459         if (stor_dev == NULL) {
 460                 debug ("Uknown device type\n");
 461                 return -1;
 462         }
 463         if (fat_register_device(stor_dev, 1) != 0) {
 464                 debug ("Unable to register ide disk 0:1 for fatls\n");
 465                 return -1;
 466         }
 467
 468         /*
 469          * Check if magic file is present
 470          */
 471         if (do_fat_read(AU_MAGIC_FILE, buffer, sizeof(buffer), LS_NO) <= 0) {
 472                 return -1;
 473         }
 474
 475 #ifdef CONFIG_AUTO_UPDATE_SHOW
 476         board_auto_update_show(1);
 477 #endif
 478         puts("\nAutoUpdate Disk detected! Trying to update system...\n");
 479
 480         /* make sure that we see CTRL-C and save the old state */
 481         old_ctrlc = disable_ctrlc(0);
 482
 483         /* just loop thru all the possible files */
 484         for (i = 0; i < N_AU_IMAGES; i++) {
 485                 /*
 486                  * Try to expand the environment var in the fname
 487                  */
 488                 process_macros(au_image[i].name, str);
 489                 strcpy(au_image[i].name, str);
 490
 491                 printf("Reading %s ...", au_image[i].name);
 492                 /* just read the header */
 493                 sz = do_fat_read(au_image[i].name, LOAD_ADDR, image_get_header_size (), LS_NO);
 494                 debug ("read %s sz %ld hdr %d\n",
 495                         au_image[i].name, sz, image_get_header_size ());
 496                 if (sz <= 0 || sz < image_get_header_size ()) {
 497                         puts(" not found\n");
 498                         continue;
 499                 }
 500                 if (au_check_header_valid(i, sz) < 0) {
 501                         puts(" header not valid\n");
 502                         continue;
 503                 }
 504                 sz = do_fat_read(au_image[i].name, LOAD_ADDR, MAX_LOADSZ, LS_NO);
 505                 debug ("read %s sz %ld hdr %d\n",
 506                         au_image[i].name, sz, image_get_header_size ());
 507                 if (sz <= 0 || sz <= image_get_header_size ()) {
 508                         puts(" not found\n");
 509                         continue;
 510                 }
 511                 if (au_check_cksum_valid(i, sz) < 0) {
 512                         puts(" checksum not valid\n");
 513                         continue;
 514                 }
 515                 puts(" done\n");
 516
 517                 do {
 518                         res = au_do_update(i, sz);
 519                         /* let the user break out of the loop */
 520                         if (ctrlc() || had_ctrlc()) {
 521                                 clear_ctrlc();
 522                                 if (res < 0)
 523                                         got_ctrlc = 1;
 524                                 break;
 525                         }
 526                         cnt++;
 527                 } while (res < 0);
 528         }
 529
 530         /* restore the old state */
 531         disable_ctrlc(old_ctrlc);
 532
 533         puts("AutoUpdate finished\n\n");
 534 #ifdef CONFIG_AUTO_UPDATE_SHOW
 535         board_auto_update_show(0);
 536 #endif
 537
 538         return 0;
 539 }
 540
 541
 542 int auto_update(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 543 {
 544         do_auto_update();
 545
 546         return 0;
 547 }
 548 U_BOOT_CMD(
 549         autoupd,        1,      1,      auto_update,
 550         "autoupd - Automatically update images\n",
 551         NULL
 552 );
 553 #endif /* CONFIG_AUTO_UPDATE */